Created attachment 119094 [details] ALSA Sound Mixer information What the kernel finds: [ 9.628766] snd_hda_codec_realtek hdaudioC0D0: autoconfig for ALC3226: line_outs=1 (0x16/0x0/0x0/0x0/0x0) type:line [ 9.628768] snd_hda_codec_realtek hdaudioC0D0: speaker_outs=1 (0x14/0x0/0x0/0x0/0x0) [ 9.628769] snd_hda_codec_realtek hdaudioC0D0: hp_outs=1 (0x15/0x0/0x0/0x0/0x0) [ 9.628770] snd_hda_codec_realtek hdaudioC0D0: mono: mono_out=0x0 [ 9.628771] snd_hda_codec_realtek hdaudioC0D0: inputs: [ 9.628772] snd_hda_codec_realtek hdaudioC0D0: Front Mic=0x18 [ 9.628773] snd_hda_codec_realtek hdaudioC0D0: Dock Mic=0x19 [ 9.628774] snd_hda_codec_realtek hdaudioC0D0: Headset Mic=0x1a [ 9.628775] snd_hda_codec_realtek hdaudioC0D0: Internal Mic=0x12 When I start, I hear a rapid two drum beat from (both speakers I guess). Muting audio in gdm does not stop this, starting laptop in single user mode, no issue. Laptop: Dell Precision M6800 BIOS: A14 05/24/2015 Audio Controller: Intel Corporation 8 Series/C220 Series Chipset High Definition Audio Controller Can provide additional info, test patches. Attempted to edit default.pa and added tsched=0 but no change in result. -> load-module module-udev-detect tsched=0
Prior to version 7.0, Fedora 22 also suffered this problem
seem lost "+" between speaker and LO http://cgit.freedesktop.org/pulseaudio/pulseaudio/commit/src/modules/alsa/mixer/paths?id=aec811798cd883a454b9b5cd82c77831906bbd2d state.PCH { control.1 { iface MIXER name 'Speaker LO Playback Volume' value.0 87 value.1 87 comment { access 'read write' type INTEGER count 2 range '0 - 87' dbmin -6525 dbmax 0 dbvalue.0 0 dbvalue.1 0 }
https://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git/commit/sound/pci/hda?id=8b99aba70c5f581860736855e211cf981f438ad2
Any Update on this? This continues in 4.4-rcX also.
https://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git/commit/sound/pci/hda?id=e7fdd52779a6c2b49d457f452296a77c8cffef6a Patch implement loopback mkxing control which mute the loopback Mixing of those input pins
Does PA need to do any config changes to take this patch into account?
Any Update on this? Continues with: 4.5.0-0.rc4.git2.2.fc24.x86_64 / pulseaudio-7.1-1.fc23.x86_64
Control: name="Front Mic Playback Volume", index=0, device=0 ControlAmp: chs=3, dir=In, idx=0, ofs=0 Control: name="Front Mic Playback Switch", index=0, device=0 ControlAmp: chs=3, dir=In, idx=0, ofs=0 Control: name="Dock Mic Playback Volume", index=0, device=0 ControlAmp: chs=3, dir=In, idx=1, ofs=0 Control: name="Dock Mic Playback Switch", index=0, device=0 ControlAmp: chs=3, dir=In, idx=1, ofs=0 Control: name="Headset Mic Playback Volume", index=0, device=0 ControlAmp: chs=3, dir=In, idx=2, ofs=0 Control: name="Headset Mic Playback Switch", index=0, device=0 ControlAmp: chs=3, dir=In, idx=2, ofs=0 Control: name="Beep Playback Volume", index=0, device=0 ControlAmp: chs=3, dir=In, idx=4, ofs=0 Control: name="Beep Playback Switch", index=0, device=0 ControlAmp: chs=3, dir=In, idx=4, ofs=0 Amp-In caps: ofs=0x17, nsteps=0x1f, stepsize=0x05, mute=1 Amp-In vals: [0x80 0x80] [0x80 0x80] [0x80 0x80] [0x80 0x80] [0x80 0x80] Connection: 5 0x18 0x19 0x1a 0x1b 0x1d you can use hint (early patching) to disable analog mixer if the noise come from analog mixer mixer_nid = 0 - mixer_nid (int): specifies the widget NID of the analog-loopback mixer https://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git/tree/Documentation/sound/alsa/HD-Audio.txt
https://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git/log/sound/pci/hda?qt=grep&q=alc292
Setting mixer_nid=0 in grub didn't fix it. I know this laptop has AAMIX on it I wonder if ALC292_FIXUP_DISABLE_AAMIX quirk may fix issue. This laptop also has bad white noise on analog I reported about long time ago.
If you still found those mic playback volume control, this mean that you have not disabled aamix by earky patching How do you add the patch file in /etc/modprobe.d/alsa-base.conf
Hello I can confirm that with the mixer_nid = 0 hint the problem goes away. Running ubuntu 14.04 with kernel 4.4.0-21-generic and pulseaudio 4.0 Dell Precision M6800 Cheers
Whats the patch file look like, still have popping here. I did try passing mixer_nid to driver, didn't work?
I got it working [codec] 0x10ec0292 0x102805cd 0 [hint] mixer_nid = 0 Could we perhaps add a quirk in codec driver if this impacts everyone with this vendor/subvendor #?
This isn't PulseAudio bug, should be a kernel quirk otherwise.
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