Bug 95055

Summary: pulseaudio blocked in kernel
Product: PulseAudio Reporter: Brian J. Murrell <brian>
Component: coreAssignee: pulseaudio-bugs
Status: RESOLVED MOVED QA Contact: pulseaudio-bugs
Severity: blocker    
Priority: medium CC: lennart
Version: unspecified   
Hardware: x86-64 (AMD64)   
OS: Linux (All)   
Whiteboard:
i915 platform: i915 features:
Attachments: pactl list output
Xorg.0.log
Xorg.1.log

Description Brian J. Murrell 2016-04-21 16:11:38 UTC
I have a pulseaudio process that seems to be blocked in the kernel:

kernel: sysrq: SysRq : Show Blocked State
kernel:   task                        PC stack   pid father
kernel: pulseaudio      D ffff8801191a3b98     0 26427      1 0x00000004
kernel:  ffff8801191a3b98 ffffffff81c10500 ffff880002788000 ffff8801191a4000
kernel:  ffff8804afa0e080 ffff8801191a3bd0 ffff8804afa0e080 ffff88049b053000
kernel:  ffff8801191a3bb0 ffffffff81795895 0000000205922d36 ffff8801191a3c60
kernel: Call Trace:
kernel:  [<ffffffff81795895>] schedule+0x35/0x80
kernel:  [<ffffffff817986b3>] schedule_timeout+0x123/0x240
kernel:  [<ffffffff8110b7c0>] ? trace_event_raw_event_tick_stop+0x120/0x120
kernel:  [<ffffffff817993de>] ? _raw_spin_unlock_irqrestore+0xe/0x10
kernel:  [<ffffffffa0477f05>] snd_power_wait+0xb5/0x110 [snd]
kernel:  [<ffffffff810cc790>] ? wake_up_q+0x70/0x70
kernel:  [<ffffffffa0479901>] snd_ctl_elem_info_user+0x61/0xf0 [snd]
kernel:  [<ffffffffa047c33c>] snd_ctl_ioctl+0x5ec/0x6c0 [snd]
kernel:  [<ffffffff8133baac>] ? selinux_file_ioctl+0x10c/0x1c0
kernel:  [<ffffffff8123e7f8>] do_vfs_ioctl+0x298/0x480
kernel:  [<ffffffff81333323>] ? security_file_ioctl+0x43/0x60
kernel:  [<ffffffff8123ea59>] SyS_ioctl+0x79/0x90
kernel:  [<ffffffff8179996e>] entry_SYSCALL_64_fastpath+0x12/0x71

Not sure how it got that way though.

Any advise or hints?
Comment 1 Brian J. Murrell 2016-04-21 16:21:07 UTC
FWIW:

# lsmod | grep snd
snd_hda_codec_hdmi     49152  1
snd_hda_codec_realtek    81920  1
snd_hda_codec_generic    69632  1 snd_hda_codec_realtek
snd_usb_audio         176128  0
snd_hda_intel          36864  4
snd_hda_codec         126976  4 snd_hda_codec_realtek,snd_hda_codec_hdmi,snd_hda_codec_generic,snd_hda_intel
snd_usbmidi_lib        36864  1 snd_usb_audio
snd_hda_core           61440  5 snd_hda_codec_realtek,snd_hda_codec_hdmi,snd_hda_codec_generic,snd_hda_codec,snd_hda_intel
snd_hwdep              16384  2 snd_usb_audio,snd_hda_codec
snd_rawmidi            32768  1 snd_usbmidi_lib
snd_seq                69632  0
snd_seq_device         16384  2 snd_seq,snd_rawmidi
snd_pcm               114688  6 snd_usb_audio,snd_hda_codec_hdmi,snd_hda_codec,snd_hda_intel,snd_hda_core
snd_timer              32768  2 snd_pcm,snd_seq
snd                    73728  20 snd_hda_codec_realtek,snd_usb_audio,snd_hwdep,snd_timer,snd_hda_codec_hdmi,snd_pcm,snd_seq,snd_rawmidi,snd_hda_codec_generic,snd_usbmidi_lib,snd_hda_codec,snd_hda_intel,snd_seq_device
soundcore              16384  1 snd

# cat /proc/asound/cards
 0 [PCH            ]: HDA-Intel - HDA Intel PCH
                      HDA Intel PCH at 0xce830000 irq 38
 2 [NVidia         ]: HDA-Intel - HDA NVidia
                      HDA NVidia at 0xce000000 irq 17
# uname -r
4.4.2-301.fc23.x86_64

# rpm -q pulseaudio
pulseaudio-7.1-1.fc23.x86_64
Comment 2 Alexander E. Patrakov 2016-04-21 18:05:31 UTC
Can you reproduce this at will? Does this go away if you disable DPMS (i.e. screen blanking) in your desktop environment settings?
Comment 3 Brian J. Murrell 2016-04-21 18:09:55 UTC
(In reply to Alexander E. Patrakov from comment #2)
> Can you reproduce this at will?

I've only had it happen this once.

FWIW, the blocked pulseaudio process has gone away now.  Another did not spawn in it's place though so I can/will have to [re-]start it manually.  I will wait to do that in case there is a particular way you want me to do that.

> Does this go away if you disable DPMS (i.e.
> screen blanking) in your desktop environment settings?

Not sure given this is the first/only time I have seen it.  :-)

It's an interesting suggestion though.  What is it about DPMS screen blanking that can cause this?
Comment 4 Alexander E. Patrakov 2016-04-21 18:14:56 UTC
On some video cards, screen-blanking freezes HDMI audio. If disabling DPMS helps you, then your bug is related to (or is a duplicate of) #93363, with the difference that you don't have any speakers connected to HDMI.
Comment 5 Brian J. Murrell 2016-04-21 20:58:56 UTC
The blocked pulseaudio seemed to finally exit.

So interestingly enough I started pulseaudio with debug logging and it's stuck at:

D: [pulseaudio] alsa-mixer.c: Looking at profile output:hdmi-stereo
D: [pulseaudio] alsa-mixer.c: Checking for playback on Digital Stereo (HDMI) (hdmi-stereo)
D: [pulseaudio] alsa-util.c: Trying hdmi:2 with SND_PCM_NO_AUTO_FORMAT ...

and blocked again.  Seems like the HDMI theory is correct.

But when I did start it above, the screen didn't go into locked or sleep mode.  It seems like the HDMI is just blocking even when the laptop is being used.

I did an xset -dpms and ended up having to walk away and by the time I got back, it had unblocked.

That all said, this is the first time in all the time (many many months) I have used this laptop that this has happened so it's strange that it'd happen just this once.
Comment 6 Brian J. Murrell 2016-04-22 12:46:21 UTC
So I believe I have DPMS disabled:

$ xset q
...
DPMS (Energy Star):
  Standby: 0    Suspend: 0    Off: 0
  DPMS is Disabled

and yet pulseaudio is still blocking on HDMI when it starts up:

D: [pulseaudio] alsa-mixer.c: Looking at profile output:hdmi-stereo
D: [pulseaudio] alsa-mixer.c: Checking for playback on Digital Stereo (HDMI) (hdmi-stereo)
D: [pulseaudio] alsa-util.c: Trying hdmi:2 with SND_PCM_NO_AUTO_FORMAT ...
[hangs there]

Any further ideas?
Comment 7 Raymond 2016-04-22 13:47:53 UTC
Did your graphic driver get EDID from your HDMI monitor ?


xrandr --verbose
Comment 8 Alexander E. Patrakov 2016-04-22 13:49:40 UTC
We need a better understanding of your laptop. Which of the following statements is accurate?

1. The laptop has both Intel and NVidia graphics. Intel drives the laptop screen, NVidia drives HDMI.

2. The laptop has only NVidia graphics.

3. Something else.

If the first statement is true, do you use Bumblebee, Primus or built-in PRIME support in your X server to make these video cards cooperate? Is your NVidia card normally in the powered-down state?

It would be useful if you attach the "pulseaudio -vvv" log and "pactl list" output.
Comment 9 Alexander E. Patrakov 2016-04-22 13:50:34 UTC
I meant, pulseaudio -vvv --log-time
Comment 10 Brian J. Murrell 2016-04-22 14:34:46 UTC
I will prefix these answers with the statement that I ended up having to reboot the laptop due to it going funky while I was trying to debug.  So the previous state is no longer and pulseaudio is not working, post-reboot.

(In reply to Raymond from comment #7)
> Did your graphic driver get EDID from your HDMI monitor ?
> 
> 
> xrandr --verbose

$ xrandr --verbose
Screen 0: minimum 320 x 200, current 1920 x 1080, maximum 16384 x 16384
DP-1 disconnected (normal left inverted right x axis y axis)
	Identifier: 0x63
	Timestamp:  83095
	Subpixel:   unknown
	Clones:    
	CRTCs:      0 1 2 3
	Transform:  1.000000 0.000000 0.000000
	            0.000000 1.000000 0.000000
	            0.000000 0.000000 1.000000
	           filter: 
	dithering depth: 6 bpc 
		supported: auto, 6 bpc, 8 bpc
	dithering mode: off 
		supported: auto, off, static 2x2, dynamic 2x2, temporal
	scaling mode: None 
		supported: None, Full, Center, Full aspect
	color vibrance: 150 
		range: (0, 200)
	vibrant hue: 90 
		range: (0, 180)
	underscan vborder: 0 
		range: (0, 128)
	underscan hborder: 0 
		range: (0, 128)
	underscan: off 
		supported: auto, off, on
DP-2 disconnected (normal left inverted right x axis y axis)
	Identifier: 0x64
	Timestamp:  83095
	Subpixel:   unknown
	Clones:    
	CRTCs:      0 1 2 3
	Transform:  1.000000 0.000000 0.000000
	            0.000000 1.000000 0.000000
	            0.000000 0.000000 1.000000
	           filter: 
	dithering depth: 6 bpc 
		supported: auto, 6 bpc, 8 bpc
	dithering mode: off 
		supported: auto, off, static 2x2, dynamic 2x2, temporal
	scaling mode: None 
		supported: None, Full, Center, Full aspect
	color vibrance: 150 
		range: (0, 200)
	vibrant hue: 90 
		range: (0, 180)
	underscan vborder: 0 
		range: (0, 128)
	underscan hborder: 0 
		range: (0, 128)
	underscan: off 
		supported: auto, off, on
DP-3 disconnected (normal left inverted right x axis y axis)
	Identifier: 0x65
	Timestamp:  83095
	Subpixel:   unknown
	Clones:    
	CRTCs:      0 1 2 3
	Transform:  1.000000 0.000000 0.000000
	            0.000000 1.000000 0.000000
	            0.000000 0.000000 1.000000
	           filter: 
	dithering depth: 6 bpc 
		supported: auto, 6 bpc, 8 bpc
	dithering mode: off 
		supported: auto, off, static 2x2, dynamic 2x2, temporal
	scaling mode: None 
		supported: None, Full, Center, Full aspect
	color vibrance: 150 
		range: (0, 200)
	vibrant hue: 90 
		range: (0, 180)
	underscan vborder: 0 
		range: (0, 128)
	underscan hborder: 0 
		range: (0, 128)
	underscan: off 
		supported: auto, off, on
eDP-1 connected 1920x1080+0+0 (0x69) normal (normal left inverted right x axis y axis) 345mm x 194mm
	Identifier: 0x66
	Timestamp:  83095
	Subpixel:   unknown
	Gamma:      1.0:1.0:1.0
	Brightness: 1.0
	Clones:    
	CRTC:       0
	CRTCs:      0 1 2 3
	Transform:  1.000000 0.000000 0.000000
	            0.000000 1.000000 0.000000
	            0.000000 0.000000 1.000000
	           filter: 
	EDID: 
		00ffffffffffff0030e46f0400000000
		0018010495231378eadc95a35855a026
		0d505400000001010101010101010101
		0101010101012e3680a070381f403020
		350059c21000001a2e3680a070381f40
		3020350059c21000001a000000000000
		00000000000000000000000000000002
		000833ff0a3c961e163696000000002b
	dithering depth: 6 bpc 
		supported: auto, 6 bpc, 8 bpc
	dithering mode: off 
		supported: auto, off, static 2x2, dynamic 2x2, temporal
	scaling mode: None 
		supported: None, Full, Center, Full aspect
	color vibrance: 150 
		range: (0, 200)
	vibrant hue: 90 
		range: (0, 180)
  1920x1080 (0x69) 138.700MHz +HSync -VSync *current +preferred
        h: width  1920 start 1968 end 2000 total 2080 skew    0 clock  66.68KHz
        v: height 1080 start 1083 end 1088 total 1111           clock  60.02Hz
  1680x1050 (0x6a) 146.250MHz -HSync +VSync
        h: width  1680 start 1784 end 1960 total 2240 skew    0 clock  65.29KHz
        v: height 1050 start 1053 end 1059 total 1089           clock  59.95Hz
  1400x1050 (0x6b) 121.750MHz -HSync +VSync
        h: width  1400 start 1488 end 1632 total 1864 skew    0 clock  65.32KHz
        v: height 1050 start 1053 end 1057 total 1089           clock  59.98Hz
  1280x1024 (0x6c) 109.000MHz -HSync +VSync
        h: width  1280 start 1368 end 1496 total 1712 skew    0 clock  63.67KHz
        v: height 1024 start 1027 end 1034 total 1063           clock  59.89Hz
  1280x960 (0x6d) 101.250MHz -HSync +VSync
        h: width  1280 start 1360 end 1488 total 1696 skew    0 clock  59.70KHz
        v: height  960 start  963 end  967 total  996           clock  59.94Hz
  1152x864 (0x6e) 81.750MHz -HSync +VSync
        h: width  1152 start 1216 end 1336 total 1520 skew    0 clock  53.78KHz
        v: height  864 start  867 end  871 total  897           clock  59.96Hz
  1024x768 (0x6f) 63.500MHz -HSync +VSync
        h: width  1024 start 1072 end 1176 total 1328 skew    0 clock  47.82KHz
        v: height  768 start  771 end  775 total  798           clock  59.92Hz
  800x600 (0x70) 38.250MHz -HSync +VSync
        h: width   800 start  832 end  912 total 1024 skew    0 clock  37.35KHz
        v: height  600 start  603 end  607 total  624           clock  59.86Hz
  640x480 (0x71) 23.750MHz -HSync +VSync
        h: width   640 start  664 end  720 total  800 skew    0 clock  29.69KHz
        v: height  480 start  483 end  487 total  500           clock  59.38Hz
  720x400 (0x72) 22.250MHz -HSync +VSync
        h: width   720 start  744 end  808 total  896 skew    0 clock  24.83KHz
        v: height  400 start  403 end  413 total  417           clock  59.55Hz
  640x400 (0x73) 20.000MHz -HSync +VSync
        h: width   640 start  664 end  720 total  800 skew    0 clock  25.00KHz
        v: height  400 start  403 end  409 total  417           clock  59.95Hz
  640x350 (0x74) 17.500MHz -HSync +VSync
        h: width   640 start  664 end  720 total  800 skew    0 clock  21.88KHz
        v: height  350 start  353 end  363 total  366           clock  59.77Hz
VGA-1 disconnected (normal left inverted right x axis y axis)
	Identifier: 0x67
	Timestamp:  83095
	Subpixel:   unknown
	Clones:    
	CRTCs:      0 1 2 3
	Transform:  1.000000 0.000000 0.000000
	            0.000000 1.000000 0.000000
	            0.000000 0.000000 1.000000
	           filter: 
	scaling mode: None 
		supported: None, Full, Center, Full aspect
	color vibrance: 150 
		range: (0, 200)
	vibrant hue: 90 
		range: (0, 180)

(In reply to Alexander E. Patrakov from comment #8)
> We need a better understanding of your laptop. Which of the following
> statements is accurate?
> 
> 1. The laptop has both Intel and NVidia graphics. Intel drives the laptop
> screen, NVidia drives HDMI.

I believe this is true.  I will attach my Xorg.0.log
 
> If the first statement is true, do you use Bumblebee, Primus or built-in
> PRIME support in your X server to make these video cards cooperate?

I don't believe I am using any of those.  Perhaps since I know I have not done anything to specifically use Bumblebee or Primus it is the latter "PRIME support in your X server".  If the Xorg.0.log does not reveal it, I will be happy to provide further information.

> Is your
> NVidia card normally in the powered-down state?

Not sure.
 
> It would be useful if you attach the "pulseaudio -vvv" log and "pactl list"
> output.

I will attach the latter but at this moment, I cannot afford the disruption of trying to stop pulseaudio and running it with -vvv.  Perhaps pulseaudio -vvv is less interesting now that I have lost the failure state.
Comment 11 Brian J. Murrell 2016-04-22 14:35:26 UTC
Created attachment 123152 [details]
pactl list output
Comment 12 Brian J. Murrell 2016-04-22 14:35:51 UTC
Created attachment 123153 [details]
Xorg.0.log
Comment 13 Alexander E. Patrakov 2016-04-22 16:09:00 UTC
You are using the vesa video driver. It relies on the BIOS and lacks any integration needed to properly enable HDMI audio on any chipsets. Additionally, it can stomp on the register values set by the proper KMS driver, without the KMS driver noticing.

Please remove "nomodeset", uninstall the vesa driver package and test whether this resolves the bug.
Comment 14 Brian J. Murrell 2016-04-28 12:58:19 UTC
I've enabled Hybrid Graphics in the BIOS to give me access to both the Intel and Nvidia GPUs.  I have not done anything with/about Bumblebee, Primus or built-in PRIME support in my X server.  This is a work workstation for web/e-mail/ssh/virtual-machines.  I don't have any extreme GPU requirements.

In any case, find attached my new Xorg.0.log.  Let me know if that will cause any problems.

It does appear to be using the intel driver now:

$ glxinfo | grep Mesa
client glx vendor string: Mesa Project and SGI
OpenGL renderer string: Mesa DRI Intel(R) Haswell Mobile 
OpenGL core profile version string: 3.3 (Core Profile) Mesa 11.1.0 (git-525f3c2)
OpenGL version string: 3.0 Mesa 11.1.0 (git-525f3c2)
OpenGL ES profile version string: OpenGL ES 3.0 Mesa 11.1.0 (git-525f3c2)
Comment 15 Brian J. Murrell 2016-04-28 12:59:14 UTC
Created attachment 123320 [details]
Xorg.1.log
Comment 16 Alexander E. Patrakov 2016-04-28 13:22:57 UTC
I have looked through the new log. If both displays work, then you are currently using PRIME (due to a Fedora patch that enables it by default). In other words, the setup now looks sane to me and should not cause any HDMI audio problems. If pulseaudio is not blocked in the kernel anymore, please close this big. Otherwise, we'll have to debug further.
Comment 17 Brian J. Murrell 2016-04-28 15:21:55 UTC
This still seems to be a problem.  I had a stuck pulseaudio process and needed to try to resolve it quickly so tried to kill it.  It's not being reaped by systemd it would seem:

# ps axf
...
 2877 ?        Z<l    0:09 [pulseaudio] <defunct>
 2918 ?        Z      0:00  \_ [gconf-helper] <defunct>
...
# ps -ef
...
brian     2877     1  0 08:50 ?        00:00:09 [pulseaudio] <defunct>
...

History is that this zombie will go a way *eventually*.  I can't start a new pulseaudio until it does though.

So much for resolving this quickly.  :-(
Comment 18 Brian J. Murrell 2016-04-28 15:23:39 UTC
New "xrandr --verbose":

$ xrandr --verbose

Screen 0: minimum 8 x 8, current 1920 x 1080, maximum 32767 x 32767
eDP1 connected primary 1920x1080+0+0 (0x8e) normal (normal left inverted right x axis y axis) 345mm x 194mm
	Identifier: 0x8a
	Timestamp:  158304
	Subpixel:   unknown
	Gamma:      1.0:1.0:1.0
	Brightness: 1.0
	Clones:    
	CRTC:       0
	CRTCs:      0 1 2
	Transform:  1.000000 0.000000 0.000000
	            0.000000 1.000000 0.000000
	            0.000000 0.000000 1.000000
	           filter: 
	EDID: 
		00ffffffffffff0030e46f0400000000
		0018010495231378eadc95a35855a026
		0d505400000001010101010101010101
		0101010101012e3680a070381f403020
		350059c21000001a2e3680a070381f40
		3020350059c21000001a000000000000
		00000000000000000000000000000002
		000833ff0a3c961e163696000000002b
	BACKLIGHT: 4882 
		range: (0, 4882)
	Backlight: 4882 
		range: (0, 4882)
	scaling mode: Full aspect 
		supported: None, Full, Center, Full aspect
	Broadcast RGB: Automatic 
		supported: Automatic, Full, Limited 16:235
	audio: auto 
		supported: force-dvi, off, auto, on
  1920x1080 (0x8e) 138.700MHz +HSync -VSync *current +preferred
        h: width  1920 start 1968 end 2000 total 2080 skew    0 clock  66.68KHz
        v: height 1080 start 1083 end 1088 total 1111           clock  60.02Hz
  1400x1050 (0x12f) 122.000MHz +HSync +VSync
        h: width  1400 start 1488 end 1640 total 1880 skew    0 clock  64.89KHz
        v: height 1050 start 1052 end 1064 total 1082           clock  59.98Hz
  1600x900 (0x130) 118.997MHz -HSync +VSync
        h: width  1600 start 1696 end 1864 total 2128 skew    0 clock  55.92KHz
        v: height  900 start  901 end  904 total  932           clock  60.00Hz
  1280x1024 (0x131) 108.000MHz +HSync +VSync
        h: width  1280 start 1328 end 1440 total 1688 skew    0 clock  63.98KHz
        v: height 1024 start 1025 end 1028 total 1066           clock  60.02Hz
  1280x960 (0x132) 108.000MHz +HSync +VSync
        h: width  1280 start 1376 end 1488 total 1800 skew    0 clock  60.00KHz
        v: height  960 start  961 end  964 total 1000           clock  60.00Hz
  1368x768 (0x133) 85.860MHz -HSync +VSync
        h: width  1368 start 1440 end 1584 total 1800 skew    0 clock  47.70KHz
        v: height  768 start  769 end  772 total  795           clock  60.00Hz
  1280x720 (0x134) 74.480MHz -HSync +VSync
        h: width  1280 start 1336 end 1472 total 1664 skew    0 clock  44.76KHz
        v: height  720 start  721 end  724 total  746           clock  60.00Hz
  1024x768 (0x135) 65.000MHz -HSync -VSync
        h: width  1024 start 1048 end 1184 total 1344 skew    0 clock  48.36KHz
        v: height  768 start  771 end  777 total  806           clock  60.00Hz
  1024x576 (0x136) 46.995MHz -HSync +VSync
        h: width  1024 start 1064 end 1168 total 1312 skew    0 clock  35.82KHz
        v: height  576 start  577 end  580 total  597           clock  60.00Hz
  960x540 (0x137) 40.784MHz -HSync +VSync
        h: width   960 start  992 end 1088 total 1216 skew    0 clock  33.54KHz
        v: height  540 start  541 end  544 total  559           clock  60.00Hz
  800x600 (0x138) 40.000MHz +HSync +VSync
        h: width   800 start  840 end  968 total 1056 skew    0 clock  37.88KHz
        v: height  600 start  601 end  605 total  628           clock  60.32Hz
  800x600 (0x139) 36.000MHz +HSync +VSync
        h: width   800 start  824 end  896 total 1024 skew    0 clock  35.16KHz
        v: height  600 start  601 end  603 total  625           clock  56.25Hz
  864x486 (0x13a) 32.901MHz -HSync +VSync
        h: width   864 start  888 end  976 total 1088 skew    0 clock  30.24KHz
        v: height  486 start  487 end  490 total  504           clock  60.00Hz
  640x480 (0x13b) 25.175MHz -HSync -VSync
        h: width   640 start  656 end  752 total  800 skew    0 clock  31.47KHz
        v: height  480 start  490 end  492 total  525           clock  59.94Hz
  720x405 (0x13c) 22.176MHz -HSync +VSync
        h: width   720 start  728 end  800 total  880 skew    0 clock  25.20KHz
        v: height  405 start  406 end  409 total  420           clock  60.00Hz
  640x360 (0x13d) 17.187MHz -HSync +VSync
        h: width   640 start  640 end  704 total  768 skew    0 clock  22.38KHz
        v: height  360 start  361 end  364 total  373           clock  60.00Hz
VGA1 disconnected (normal left inverted right x axis y axis)
	Identifier: 0x8b
	Timestamp:  158304
	Subpixel:   unknown
	Clones:    
	CRTCs:      0 1 2
	Transform:  1.000000 0.000000 0.000000
	            0.000000 1.000000 0.000000
	            0.000000 0.000000 1.000000
	           filter: 
VIRTUAL1 disconnected (normal left inverted right x axis y axis)
	Identifier: 0x8c
	Timestamp:  158304
	Subpixel:   no subpixels
	Clones:    
	CRTCs:      3
	Transform:  1.000000 0.000000 0.000000
	            0.000000 1.000000 0.000000
	            0.000000 0.000000 1.000000
	           filter: 
DP-1-1 disconnected (normal left inverted right x axis y axis)
	Identifier: 0x63
	Timestamp:  157526
	Subpixel:   unknown
	Clones:    
	CRTCs:      4 5 6 7
	Transform:  1.000000 0.000000 0.000000
	            0.000000 1.000000 0.000000
	            0.000000 0.000000 1.000000
	           filter: 
	dithering depth: 6 bpc 
		supported: auto, 6 bpc, 8 bpc
	dithering mode: off 
		supported: auto, off, static 2x2, dynamic 2x2, temporal
	scaling mode: None 
		supported: None, Full, Center, Full aspect
	color vibrance: 150 
		range: (0, 200)
	vibrant hue: 90 
		range: (0, 180)
	underscan vborder: 0 
		range: (0, 128)
	underscan hborder: 0 
		range: (0, 128)
	underscan: off 
		supported: auto, off, on
DP-1-2 disconnected (normal left inverted right x axis y axis)
	Identifier: 0x64
	Timestamp:  157526
	Subpixel:   unknown
	Clones:    
	CRTCs:      4 5 6 7
	Transform:  1.000000 0.000000 0.000000
	            0.000000 1.000000 0.000000
	            0.000000 0.000000 1.000000
	           filter: 
	dithering depth: 6 bpc 
		supported: auto, 6 bpc, 8 bpc
	dithering mode: off 
		supported: auto, off, static 2x2, dynamic 2x2, temporal
	scaling mode: None 
		supported: None, Full, Center, Full aspect
	color vibrance: 150 
		range: (0, 200)
	vibrant hue: 90 
		range: (0, 180)
	underscan vborder: 0 
		range: (0, 128)
	underscan hborder: 0 
		range: (0, 128)
	underscan: off 
		supported: auto, off, on
DP-1-3 disconnected (normal left inverted right x axis y axis)
	Identifier: 0x65
	Timestamp:  157526
	Subpixel:   unknown
	Clones:    
	CRTCs:      4 5 6 7
	Transform:  1.000000 0.000000 0.000000
	            0.000000 1.000000 0.000000
	            0.000000 0.000000 1.000000
	           filter: 
	dithering depth: 6 bpc 
		supported: auto, 6 bpc, 8 bpc
	dithering mode: off 
		supported: auto, off, static 2x2, dynamic 2x2, temporal
	scaling mode: None 
		supported: None, Full, Center, Full aspect
	color vibrance: 150 
		range: (0, 200)
	vibrant hue: 90 
		range: (0, 180)
	underscan vborder: 0 
		range: (0, 128)
	underscan hborder: 0 
		range: (0, 128)
	underscan: off 
		supported: auto, off, on
Comment 19 Raymond 2016-04-28 16:22:07 UTC
ftp://download.nvidia.com/XFree86/gpu-hdmi-audio-document/gpu-hdmi-audio.html#_verify_your_eld_is_validPorts


		hdmi-output-0: HDMI / DisplayPort (priority: 5900, latency offset: 0 usec, available)
			Properties:
				device.icon_name = "video-display"
				device.product.name = "24MP76"
			Part of profile(s): output:hdmi-stereo



did your graphic driver get the correct EDID of your LG 24MP76 and pass ELD to audio driver ?
Comment 20 Alexander E. Patrakov 2016-04-28 18:39:18 UTC
(In reply to Brian J. Murrell from comment #18)
> New "xrandr --verbose":
> 
> $ xrandr --verbose
> 
> Screen 0: minimum 8 x 8, current 1920 x 1080, maximum 32767 x 32767
> eDP1 connected primary 1920x1080+0+0 (0x8e) normal (normal left inverted
> right x axis y axis) 345mm x 194mm

...and there are no monitors connected to the NVidia GPU. So maybe it is powered down. Try to disable this by adding this parameter to the kernel command line:

nouveau.runpm=0

Anyway, this is a kernel bug, not something that can be fixed in PulseAudio. All we can do here is to gather some evidence.

Please verify (without the above parameter) whether this command also gets blocked in the kernel. Run it repeatedly just in case.

amixer -c2

Also try:

alsamixer -c2

and mute/unmute various spdifs repeatedly.

Finally:

time pasuspender -- aplay -d 5 -D hdmi:2 -f dat /dev/zero

OTOH the EDID question by Raymond has absolutely no sense, exactly because you have nothing connected to the NVidia GPU. So, it cannot (and should not) get any EDID.
Comment 21 Raymond 2016-04-29 01:14:03 UTC
	EDID: 
		00ffffffffffff0030e46f0400000000
		0018010495231378eadc95a35855a026
		0d505400000001010101010101010101
		0101010101012e3680a070381f403020
		350059c21000001a2e3680a070381f40
		3020350059c21000001a000000000000
		00000000000000000000000000000002
		000833ff0a3c961e163696000000002b


       audio: auto 
		supported: force-dvi, off, auto, on


https://cgit.freedesktop.org/xorg/app/edid-decode/tree/
Comment 22 Raymond 2016-04-29 01:51:58 UTC
https://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git/tree/sound/pci/hda/hda_eld.c

do you have any output of snd_hdmi_print_eld_info
Comment 23 Brian J. Murrell 2016-04-30 16:59:31 UTC
(In reply to Raymond from comment #19)
> ftp://download.nvidia.com/XFree86/gpu-hdmi-audio-document/gpu-hdmi-audio.
> html#_verify_your_eld_is_validPorts
> 
> 
> 		hdmi-output-0: HDMI / DisplayPort (priority: 5900, latency offset: 0 usec,
> available)
> 			Properties:
> 				device.icon_name = "video-display"
> 				device.product.name = "24MP76"
> 			Part of profile(s): output:hdmi-stereo
> 
> 
> 
> did your graphic driver get the correct EDID of your LG 24MP76 and pass ELD
> to audio driver ?

I don't (usually) have any monitors connected to the HDMI.  That must have been a/the one time I did to see if having a monitor on the HDMI port made the problem any better or worse.

(In reply to Alexander E. Patrakov from comment #20)
> 
> ...and there are no monitors connected to the NVidia GPU. So maybe it is
> powered down. Try to disable this by adding this parameter to the kernel
> command line:
> 
> nouveau.runpm=0

OK.  That will take effect on my next reboot.

> Anyway, this is a kernel bug, not something that can be fixed in PulseAudio.
> All we can do here is to gather some evidence.

Happy to help with that in any way I can.
 
> Please verify (without the above parameter) whether this command also gets
> blocked in the kernel. Run it repeatedly just in case.
> 
> amixer -c2

I only had to run it once:
$ amixer -c2
[ didn't return]
$ ps axf | grep amixer
27202 pts/1    D+     0:00  |   \_ amixer -c2

Here's the stack trace of it:

 task                        PC stack   pid father
amixer          D ffff8802f995bb98     0 27202   3824 0x00000000
ffff8802f995bb98 ffff88049d6cda00 ffff88046a3b9e00 ffff8802f995c000
ffff8802f995bbd0 ffff8804afb0e080 ffff8804afb0e080 ffff88049c17a000
ffff8802f995bbb0 ffffffff8179cf95 000000010b2a9d8b ffff8802f995bc60
Call Trace:
[<ffffffff8179cf95>] schedule+0x35/0x80
[<ffffffff8179fdb3>] schedule_timeout+0x123/0x270
[<ffffffff8110d350>] ? trace_event_raw_event_tick_stop+0x120/0x120
[<ffffffff817a0b5e>] ? _raw_spin_unlock_irqrestore+0xe/0x10
[<ffffffffa05dbf05>] snd_power_wait+0xb5/0x110 [snd]
[<ffffffff810cddd0>] ? wake_up_q+0x70/0x70
[<ffffffffa05dd901>] snd_ctl_elem_info_user+0x61/0xf0 [snd]
[<ffffffffa05e034c>] snd_ctl_ioctl+0x5ec/0x6c0 [snd]
[<ffffffff813407fc>] ? selinux_file_ioctl+0x10c/0x1c0
[<ffffffff81241428>] do_vfs_ioctl+0x298/0x480
[<ffffffff813380b3>] ? security_file_ioctl+0x43/0x60
[<ffffffff81241689>] SyS_ioctl+0x79/0x90
[<ffffffff817a10ee>] entry_SYSCALL_64_fastpath+0x12/0x71

> Also try:
> 
> alsamixer -c2
> 
> and mute/unmute various spdifs repeatedly.
> 
> Finally:
> 
> time pasuspender -- aplay -d 5 -D hdmi:2 -f dat /dev/zero

Do you still want the above, given that amixer has blocked in the kernel?  If so, I assume you want those if/when amixer does finally return?

(In reply to Raymond from comment #22)
> https://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git/tree/sound/pci/
> hda/hda_eld.c
> 
> do you have any output of snd_hdmi_print_eld_info

How/where would I get that?
Comment 24 Alexander E. Patrakov 2016-04-30 17:33:37 UTC
(In reply to Brian J. Murrell from comment #23)
> (In reply to Alexander E. Patrakov from comment #20)
> > Please verify (without the above parameter) whether this command also gets
> > blocked in the kernel. Run it repeatedly just in case.
> > 
> > amixer -c2
> 
> I only had to run it once:
> $ amixer -c2
> [ didn't return]
> $ ps axf | grep amixer
> 27202 pts/1    D+     0:00  |   \_ amixer -c2
> 
> Here's the stack trace of it:

<snip>

> > Also try:
> > 
> > alsamixer -c2
> > 
> > and mute/unmute various spdifs repeatedly.
> > 
> > Finally:
> > 
> > time pasuspender -- aplay -d 5 -D hdmi:2 -f dat /dev/zero
> 
> Do you still want the above, given that amixer has blocked in the kernel? 
> If so, I assume you want those if/when amixer does finally return?

No, reproducing the bug with amixer was enough.

I am still waiting for the test result with nouveau.runpm=0 to complete the evidence.
Comment 25 Brian J. Murrell 2016-04-30 17:54:44 UTC
(In reply to Alexander E. Patrakov from comment #24)
> 
> No, reproducing the bug with amixer was enough.

OK.  Great.  It did end up returning, eventually, FWIW:

Simple mixer control 'IEC958',0
  Capabilities: pswitch pswitch-joined
  Playback channels: Mono
  Mono: Playback [on]
Simple mixer control 'IEC958',1
  Capabilities: pswitch pswitch-joined
  Playback channels: Mono
  Mono: Playback [on]
Simple mixer control 'IEC958',2
  Capabilities: pswitch pswitch-joined
  Playback channels: Mono
  Mono: Playback [on]
 
> I am still waiting for the test result with nouveau.runpm=0 to complete the
> evidence.

$ cat /proc/cmdline 
BOOT_IMAGE=/vmlinuz-4.4.7-300.fc23.x86_64 root=/dev/mapper/fedora_laptop-root ro rd.lvm.lv=fedora_laptop/boot rd.lvm.lv=fedora_laptop/root rd.lvm.lv=fedora_laptop/swap rhgb quiet libata.allow_tpm=1 LANG=en_CA.UTF-8 nouveau.runpm=0
$ amixer -c2
[ returned right away with: ]
Simple mixer control 'Speaker',0
  Capabilities: pvolume pvolume-joined pswitch pswitch-joined
  Playback channels: Mono
  Limits: Playback 0 - 704
  Mono: Playback 704 [100%] [3.00dB] [on]
Simple mixer control 'Bass',0
  Capabilities: volume volume-joined
  Playback channels: Mono
  Capture channels: Mono
  Limits: 0 - 48
  Mono: 24 [50%]
Simple mixer control 'Treble',0
  Capabilities: volume volume-joined
  Playback channels: Mono
  Capture channels: Mono
  Limits: 0 - 48
  Mono: 24 [50%]
Simple mixer control 'Mic',0
  Capabilities: pvolume pvolume-joined cvolume cvolume-joined pswitch pswitch-joined cswitch cswitch-joined
  Playback channels: Mono
  Capture channels: Mono
  Limits: Playback 0 - 656 Capture 0 - 15
  Mono: Playback 368 [56%] [-18.00dB] [on] Capture 15 [100%] [31.00dB] [on]
Comment 26 Alexander E. Patrakov 2016-04-30 18:00:51 UTC
Thanks!

It only remains to see whether nouveau.runpm=0 also fixes pulseaudio.
Comment 27 Alexander E. Patrakov 2016-04-30 18:04:43 UTC
(In reply to Brian J. Murrell from comment #25)
m=0
> $ amixer -c2
> [ returned right away with: ]
> Simple mixer control 'Speaker',0

Hm. The test is not valid then - the kernel has renumbered your sound cards. Please look in /proc/asound/cards, find the card number that corresponds to NVidia HDMI, and use this number as a parameter to -c.
Comment 28 Raymond 2016-05-02 02:23:52 UTC
it was embedded display port and pulseaudio even get the name "24MP76"

eDP-1 connected 1920x1080+0+0 (0x69) normal (normal left inverted right x axis y axis) 345mm x 194mm
Comment 29 Raymond 2016-05-02 02:24:50 UTC
you havw to post output of alsa-info.sh
Comment 30 Brian J. Murrell 2016-05-02 14:12:12 UTC
With nouveau.runpm=0 on the kernel commandline:

$ cat /proc/cmdline 
BOOT_IMAGE=/vmlinuz-4.4.8-300.fc23.x86_64 root=/dev/mapper/fedora_laptop-root ro rd.lvm.lv=fedora_laptop/boot rd.lvm.lv=fedora_laptop/root rd.lvm.lv=fedora_laptop/swap rhgb quiet libata.allow_tpm=1 LANG=en_CA.UTF-8 nouveau.runpm=0

$ amixer -c2
Simple mixer control 'IEC958',0
  Capabilities: pswitch pswitch-joined
  Playback channels: Mono
  Mono: Playback [on]
Simple mixer control 'IEC958',1
  Capabilities: pswitch pswitch-joined
  Playback channels: Mono
  Mono: Playback [on]
Simple mixer control 'IEC958',2
  Capabilities: pswitch pswitch-joined
  Playback channels: Mono
  Mono: Playback [on]
Comment 31 Brian J. Murrell 2016-05-09 14:37:44 UTC
Does my last comment provide the last of the information that was needed to move forward?
Comment 32 Raymond 2016-05-09 15:51:05 UTC
your info are in consistent , 

intel at irq 38 and nvidia at irq 17

but pactl list output

two intel at irq 29 amd 30
Comment 33 Brian J. Murrell 2016-05-09 16:01:13 UTC
Are you confusing the information across a reboot?  I don't really know where you are pulling those data from so I cannot comment on whether they are or are not being compared across a reboot.

Yes, it would have been good if all of the information were from a single consistent boot instance, but real-life requires that issues be resolved (one way or another) while a problem might be getting debugged over a period of days or weeks.
Comment 34 Raymond 2016-05-10 03:44:55 UTC
(In reply to Brian J. Murrell from comment #11)
> Created attachment 123152 [details]
> pactl list output



Card #0
	Name: alsa_card.pci-0000_00_03.0
	Driver: module-alsa-card.c
	Owner Module: 6
	Properties:
		alsa.card = "0"
		alsa.card_name = "HDA Intel HDMI"
		alsa.long_card_name = "HDA Intel HDMI at 0xf7e14000 irq 30"
		alsa.driver_name = "snd_hda_intel"
		device.bus_path = "pci-0000:00:03.0"
		sysfs.path = "/devices/pci0000:00/0000:00:03.0/sound/card0"
		device.bus = "pci"
		device.vendor.id = "8086"
		device.vendor.name = "Intel Corporation"
		device.product.id = "0c0c"
		device.product.name = "Xeon E3-1200 v3/4th Gen Core Processor HD Audio Controller"
		device.form_factor = "internal"
		device.string = "0"
		device.description = "Built-in Audio"
		module-udev-detect.discovered = "1"
		device.icon_name = "audio-card-pci"
	Profiles:
		output:hdmi-stereo: Digital Stereo (HDMI) Output (sinks: 1, sources: 0, priority: 5400, available: yes)
		output:hdmi-stereo-extra1: Digital Stereo (HDMI 2) Output (sinks: 1, sources: 0, priority: 5200, available: yes)
		output:hdmi-surround-extra1: Digital Surround 5.1 (HDMI 2) Output (sinks: 1, sources: 0, priority: 100, available: yes)
		output:hdmi-surround71-extra1: Digital Surround 7.1 (HDMI 2) Output (sinks: 1, sources: 0, priority: 100, available: yes)
		output:hdmi-stereo-extra2: Digital Stereo (HDMI 3) Output (sinks: 1, sources: 0, priority: 5200, available: yes)
		output:hdmi-surround-extra2: Digital Surround 5.1 (HDMI 3) Output (sinks: 1, sources: 0, priority: 100, available: yes)
		output:hdmi-surround71-extra2: Digital Surround 7.1 (HDMI 3) Output (sinks: 1, sources: 0, priority: 100, available: yes)
		off: Off (sinks: 0, sources: 0, priority: 0, available: yes)
	Active Profile: off
	Ports:
		hdmi-output-0: HDMI / DisplayPort (priority: 5900, latency offset: 0 usec, available)
			Properties:
				device.icon_name = "video-display"
				device.product.name = "24MP76"
			Part of profile(s): output:hdmi-stereo
		hdmi-output-1: HDMI / DisplayPort 2 (priority: 5800, latency offset: 0 usec, not available)
			Properties:
				device.icon_name = "video-display"
			Part of profile(s): output:hdmi-stereo-extra1, output:hdmi-surround-extra1, output:hdmi-surround71-extra1
		hdmi-output-2: HDMI / DisplayPort 3 (priority: 5700, latency offset: 0 usec, not available)
			Properties:
				device.icon_name = "video-display"
			Part of profile(s): output:hdmi-stereo-extra2, output:hdmi-surround-extra2, output:hdmi-surround71-extra2

Card #1
	Name: alsa_card.pci-0000_00_1b.0
	Driver: module-alsa-card.c
	Owner Module: 7
	Properties:
		alsa.card = "1"
		alsa.card_name = "HDA Intel PCH"
		alsa.long_card_name = "HDA Intel PCH at 0xf7e10000 irq 29"
		alsa.driver_name = "snd_hda_intel"
		device.bus_path = "pci-0000:00:1b.0"
		sysfs.path = "/devices/pci0000:00/0000:00:1b.0/sound/card1"
		device.bus = "pci"
		device.vendor.id = "8086"
		device.vendor.name = "Intel Corporation"
		device.product.id = "8c20"
		device.product.name = "8 Series/C220 Series Chipset High Definition Audio Controller"
		device.form_factor = "internal"
		device.string = "1"
		device.description = "Built-in Audio"
		module-udev-detect.discovered = "1"
		device.icon_name = "audio-card-pci"
	Profiles:
		input:analog-stereo: Analog Stereo Input (sinks: 0, sources: 1, priority: 60, available: yes)
		output:analog-stereo: Analog Stereo Output (sinks: 1, sources: 0, priority: 6000, available: yes)
		output:analog-stereo+input:analog-stereo: Analog Stereo Duplex (sinks: 1, sources: 1, priority: 6060, available: yes)
		off: Off (sinks: 0, sources: 0, priority: 0, available: yes)
	Active Profile: output:analog-stereo+input:analog-stereo
	Ports:
		analog-input-front-mic: Front Microphone (priority: 8500, latency offset: 0 usec, not available)
			Properties:
				device.icon_name = "audio-input-microphone"
			Part of profile(s): input:analog-stereo, output:analog-stereo+input:analog-stereo
		analog-input-rear-mic: Rear Microphone (priority: 8200, latency offset: 0 usec, available)
			Properties:
				device.icon_name = "audio-input-microphone"
			Part of profile(s): input:analog-stereo, output:analog-stereo+input:analog-stereo
		analog-input-linein: Line In (priority: 8100, latency offset: 0 usec, not available)
			Part of profile(s): input:analog-stereo, output:analog-stereo+input:analog-stereo
		analog-output-lineout: Line Out (priority: 9900, latency offset: 0 usec, available)
			Part of profile(s): output:analog-stereo, output:analog-stereo+input:analog-stereo
		analog-output-headphones: Headphones (priority: 9000, latency offset: 0 usec)
			Properties:
				device.icon_name = "audio-headphones"
			Part of profile(s): output:analog-stereo, output:analog-stereo+input:analog-stereo







# cat /proc/asound/cards
 0 [PCH            ]: HDA-Intel - HDA Intel PCH
                      HDA Intel PCH at 0xce830000 irq 38
 2 [NVidia         ]: HDA-Intel - HDA NVidia
                      HDA NVidia at 0xce000000 irq 17
Comment 35 Raymond 2016-05-10 03:45:04 UTC
(In reply to Brian J. Murrell from comment #11)
> Created attachment 123152 [details]
> pactl list output



Card #0
	Name: alsa_card.pci-0000_00_03.0
	Driver: module-alsa-card.c
	Owner Module: 6
	Properties:
		alsa.card = "0"
		alsa.card_name = "HDA Intel HDMI"
		alsa.long_card_name = "HDA Intel HDMI at 0xf7e14000 irq 30"
		alsa.driver_name = "snd_hda_intel"
		device.bus_path = "pci-0000:00:03.0"
		sysfs.path = "/devices/pci0000:00/0000:00:03.0/sound/card0"
		device.bus = "pci"
		device.vendor.id = "8086"
		device.vendor.name = "Intel Corporation"
		device.product.id = "0c0c"
		device.product.name = "Xeon E3-1200 v3/4th Gen Core Processor HD Audio Controller"
		device.form_factor = "internal"
		device.string = "0"
		device.description = "Built-in Audio"
		module-udev-detect.discovered = "1"
		device.icon_name = "audio-card-pci"
	Profiles:
		output:hdmi-stereo: Digital Stereo (HDMI) Output (sinks: 1, sources: 0, priority: 5400, available: yes)
		output:hdmi-stereo-extra1: Digital Stereo (HDMI 2) Output (sinks: 1, sources: 0, priority: 5200, available: yes)
		output:hdmi-surround-extra1: Digital Surround 5.1 (HDMI 2) Output (sinks: 1, sources: 0, priority: 100, available: yes)
		output:hdmi-surround71-extra1: Digital Surround 7.1 (HDMI 2) Output (sinks: 1, sources: 0, priority: 100, available: yes)
		output:hdmi-stereo-extra2: Digital Stereo (HDMI 3) Output (sinks: 1, sources: 0, priority: 5200, available: yes)
		output:hdmi-surround-extra2: Digital Surround 5.1 (HDMI 3) Output (sinks: 1, sources: 0, priority: 100, available: yes)
		output:hdmi-surround71-extra2: Digital Surround 7.1 (HDMI 3) Output (sinks: 1, sources: 0, priority: 100, available: yes)
		off: Off (sinks: 0, sources: 0, priority: 0, available: yes)
	Active Profile: off
	Ports:
		hdmi-output-0: HDMI / DisplayPort (priority: 5900, latency offset: 0 usec, available)
			Properties:
				device.icon_name = "video-display"
				device.product.name = "24MP76"
			Part of profile(s): output:hdmi-stereo
		hdmi-output-1: HDMI / DisplayPort 2 (priority: 5800, latency offset: 0 usec, not available)
			Properties:
				device.icon_name = "video-display"
			Part of profile(s): output:hdmi-stereo-extra1, output:hdmi-surround-extra1, output:hdmi-surround71-extra1
		hdmi-output-2: HDMI / DisplayPort 3 (priority: 5700, latency offset: 0 usec, not available)
			Properties:
				device.icon_name = "video-display"
			Part of profile(s): output:hdmi-stereo-extra2, output:hdmi-surround-extra2, output:hdmi-surround71-extra2

Card #1
	Name: alsa_card.pci-0000_00_1b.0
	Driver: module-alsa-card.c
	Owner Module: 7
	Properties:
		alsa.card = "1"
		alsa.card_name = "HDA Intel PCH"
		alsa.long_card_name = "HDA Intel PCH at 0xf7e10000 irq 29"
		alsa.driver_name = "snd_hda_intel"
		device.bus_path = "pci-0000:00:1b.0"
		sysfs.path = "/devices/pci0000:00/0000:00:1b.0/sound/card1"
		device.bus = "pci"
		device.vendor.id = "8086"
		device.vendor.name = "Intel Corporation"
		device.product.id = "8c20"
		device.product.name = "8 Series/C220 Series Chipset High Definition Audio Controller"
		device.form_factor = "internal"
		device.string = "1"
		device.description = "Built-in Audio"
		module-udev-detect.discovered = "1"
		device.icon_name = "audio-card-pci"
	Profiles:
		input:analog-stereo: Analog Stereo Input (sinks: 0, sources: 1, priority: 60, available: yes)
		output:analog-stereo: Analog Stereo Output (sinks: 1, sources: 0, priority: 6000, available: yes)
		output:analog-stereo+input:analog-stereo: Analog Stereo Duplex (sinks: 1, sources: 1, priority: 6060, available: yes)
		off: Off (sinks: 0, sources: 0, priority: 0, available: yes)
	Active Profile: output:analog-stereo+input:analog-stereo
	Ports:
		analog-input-front-mic: Front Microphone (priority: 8500, latency offset: 0 usec, not available)
			Properties:
				device.icon_name = "audio-input-microphone"
			Part of profile(s): input:analog-stereo, output:analog-stereo+input:analog-stereo
		analog-input-rear-mic: Rear Microphone (priority: 8200, latency offset: 0 usec, available)
			Properties:
				device.icon_name = "audio-input-microphone"
			Part of profile(s): input:analog-stereo, output:analog-stereo+input:analog-stereo
		analog-input-linein: Line In (priority: 8100, latency offset: 0 usec, not available)
			Part of profile(s): input:analog-stereo, output:analog-stereo+input:analog-stereo
		analog-output-lineout: Line Out (priority: 9900, latency offset: 0 usec, available)
			Part of profile(s): output:analog-stereo, output:analog-stereo+input:analog-stereo
		analog-output-headphones: Headphones (priority: 9000, latency offset: 0 usec)
			Properties:
				device.icon_name = "audio-headphones"
			Part of profile(s): output:analog-stereo, output:analog-stereo+input:analog-stereo







# cat /proc/asound/cards
 0 [PCH            ]: HDA-Intel - HDA Intel PCH
                      HDA Intel PCH at 0xce830000 irq 38
 2 [NVidia         ]: HDA-Intel - HDA NVidia
                      HDA NVidia at 0xce000000 irq 17
Comment 36 GitLab Migration User 2018-07-30 10:01:56 UTC
-- GitLab Migration Automatic Message --

This bug has been migrated to freedesktop.org's GitLab instance and has been closed from further activity.

You can subscribe and participate further through the new bug through this link to our GitLab instance: https://gitlab.freedesktop.org/pulseaudio/pulseaudio/issues/177.

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