Without pulseaudio volume level is detected correctly. (I 've changed default card in /etc/asound.conf, then ran `speaker-test -c6 -twav` and set volume in alsamixer to 3 per centages) With pulseaudio: 1) Headset is loud, even on lowest possible volume level 2) If I set volume below 35 per centages (below -27 db) the output becomes silent immediately. 3) On some computers, there is possibility to change analog mode to digital (S/PDIF). With digital mode it becomes calmer: the loudest volume level produces low volume, it is the same as 35% of analog mode, and the lowest volume level may be still determined. Tested with latest versions (ubuntu xenial): Version 7.1 kernel 4.4 cat /proc/asound/card3/pcm0p/info card: 3 device: 0 subdevice: 0 stream: PLAYBACK id: USB Audio name: USB Audio subname: subdevice #0 class: 0 subclass: 0 subdevices_count: 1 subdevices_avail: 1
from lshw *-usbhost product: OHCI PCI host controller vendor: Linux 4.4.0-2-generic ohci_hcd physical id: 1 bus info: usb@7 logical name: usb7 version: 4.04 capabilities: usb-1.10 configuration: driver=hub slots=4 speed=12Mbit/s *-usb description: Audio device product: Creative HS-720 Headset vendor: Creative Technology Ltd. physical id: 1 bus info: usb@7:1 version: 1.00 capabilities: usb-1.10 audio-control configuration: driver=usbhid maxpower=100mA speed=12Mbit/s
You can use ignore_db=1 If pulseaudio don't. Like dB range -28.37 dB to 0dB state.Headset { control.1 { iface MIXER name 'PCM Playback Switch' value true comment { access 'read write' type BOOLEAN count 1 } } control.2 { iface MIXER name 'PCM Playback Volume' value.0 12 value.1 12 comment { access 'read write' type INTEGER count 2 range '0 - 38' dbmin -2837 dbmax -6 dbvalue.0 -1943 dbvalue.1 -1943 } }
Can you provide the log when you change the volume slider? Do the volume change when you change from step 0 to step 38 using alsa mixer -28.37 to -0.06 dB
You can provide correct dB range by re calibrate your usb audio device https://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git/commit/sound/usb?id=42e3121d90f42e57f6dbd6083dff2f57b3ec7daa
Created attachment 121624 [details] vvvvlog I've made log according to this guide https://wiki.ubuntu.com/PulseAudio/Log : `LANG=C pulseaudio -vvvv --log-time=1 > ~/pulseverbose.log 2>&1`
1)I've searched over the internet and have found the same issue as mine (35% too), but with another usb audio card : https://chrisjean.com/fix-for-usb-audio-is-too-loud-and-mutes-at-low-volume-in-ubuntu/ Some notes from this guide helped me: I 've changed "volume = merge" to "volume = ignore" in /usr/share/pulseaudio/alsa-mixer/paths/analog-output.conf.common Situation now is much much better: headset behave as they should be (the same like in digital mode), but the maximum volume is not loud enough imho (120-130% would be fine). Setting volume over 100% causes overdrive (headset may play louder without overdrives according to my past expirience). Maybe making such config default is good idea? (replace merge with ignore) 2) I 'm using windows-dualboot and I have noticed that 100% volume on windows is always louder that 100% on linux (with PA) 3) In which file should I place "ignore_db=1"? 4) Is it dangerous to recalibrate my headsets? Should I use any program (I don't know which) to provide range which I consider correct? And which units should I use ? (dB, volts, some virtual usb units etc.) I guess such patches should be sent to alsa project or kernel, not PA.
Nevermind point 3. "load-module module-udev-detect use_ucm=0 ignore_dB=1" in /etc/pulse/default.pa is far better solution. The volume may be still extreme loud, but I won't set it over 45%. From all above I conclude: 1) It's not PA fault, but some default configurations may be altered in pulseaudio. Why not to make ignore_dB=1 default? 2) According to latest comment here: https://chrisjean.com/fix-for-usb-audio-is-too-loud-and-mutes-at-low-volume-in-ubuntu/ On some architectures (amd64) or most motherboards creative and some other cards are too loud, and I should have talks with kernel devs with this problem
1.814| 0.000) I: [pulseaudio] alsa-sink.c: Hardware volume ranges from -28,37 dB to -0,06 dB. ( 1.814| 0.000) I: [pulseaudio] alsa-sink.c: Fixing base volume to 0,06 dB ( 1.814| 0.000) I: [pulseaudio] alsa-sink.c: Using hardware volume control. Hardware dB scale supported. ( 1.814| 0.000) I: [pulseaudio] alsa-sink.c: Using hardware mute control. ( 1.814| 0.000) D: [pulseaudio] alsa-util.c: snd_pcm_dump(): ( 1.814| 0.000) D: [pulseaudio] alsa-util.c: Hardware PCM card 2 'Creative HS-720 Headset' device 0 subdevice 0 ( 1.814| 0.000) D: [pulseaudio] alsa-util.c: Its setup is: ( 1.814| 0.000) D: [pulseaudio] alsa-util.c: stream : PLAYBACK ( 1.814| 0.000) D: [pulseaudio] alsa-util.c: access : MMAP_INTERLEAVED ( 1.814| 0.000) D: [pulseaudio] alsa-util.c: format : S16_LE ( 1.814| 0.000) D: [pulseaudio] alsa-util.c: subformat : STD ( 1.814| 0.000) D: [pulseaudio] alsa-util.c: channels : 2 ( 1.814| 0.000) D: [pulseaudio] alsa-util.c: rate : 44100 ( 1.814| 0.000) D: [pulseaudio] alsa-util.c: exact rate : 44100 (44100/1) ( 1.814| 0.000) D: [pulseaudio] alsa-util.c: msbits : 16 ( 1.814| 0.000) D: [pulseaudio] alsa-util.c: buffer_size : 88200 ( 1.814| 0.000) D: [pulseaudio] alsa-util.c: period_size : 44100 ( 1.814| 0.000) D: [pulseaudio] alsa-util.c: period_time : 1000000 ( 1.814| 0.000) D: [pulseaudio] alsa-util.c: tstamp_mode : ENABLE ( 1.814| 0.000) D: [pulseaudio] alsa-util.c: period_step : 1 ( 1.814| 0.000) D: [pulseaudio] alsa-util.c: avail_min : 87319 ( 1.814| 0.000) D: [pulseaudio] alsa-util.c: period_event : 0 ( 1.814| 0.000) D: [pulseaudio] alsa-util.c: start_threshold : -1 ( 1.814| 0.000) D: [pulseaudio] alsa-util.c: stop_threshold : 6206523236469964800 ( 1.814| 0.000) D: [pulseaudio] alsa-util.c: silence_threshold: 0 ( 1.814| 0.000) D: [pulseaudio] alsa-util.c: silence_size : 0 ( 1.814| 0.000) D: [pulseaudio] alsa-util.c: boundary : 6206523236469964800 ( 1.814| 0.000) D: [pulseaudio] alsa-util.c: appl_ptr : 0 ( 1.814| 0.000) D: [pulseaudio] alsa-util.c: hw_ptr : 0 ( 1.815| 0.000) D: [pulseaudio] alsa-sink.c: Requested volume: 0: 35% 1: 35% ( 1.815| 0.000) D: [pulseaudio] alsa-sink.c: in dB: 0: -27,14 dB 1: -27,14 dB ( 1.815| 0.000) D: [pulseaudio] alsa-sink.c: Got hardware volume: 0: 36% 1: 36% ( 1.815| 0.000) D: [pulseaudio] alsa-sink.c: in dB: 0: -26,82 dB 1: -26,82 dB ( 1.815| 0.000) D: [alsa-sink-USB Audio] alsa-sink.c: Thread starting up ( 1.815| 0.000) D: [pulseaudio] alsa-sink.c: Calculated software volume: 0: 99% 1: 99% (accurate-enough=no) ( 1.815| 0.000) D: [pulseaudio] alsa-sink.c: in dB: 0: -0,32 dB 1: -0,32 dB ( 1.815| 0.000) D: [pulseaudio] alsa-sink.c: Written HW volume did not match with the request: 0: 35% 1: 35% (request) != 0: 36% 1: 36% ( 1.815| 0.000) D: [pulseaudio] alsa-sink.
Created attachment 121649 [details] alsainfo That's my alsainfo.sh output. BTW, the log, which was uploaded before was made under these circumstances: I've changed volume from about 25 to 40 per cents. I didn't understand what am I exactly to do, particalrly which interpreter to use for the script you wrote in comment 2
dB per step = (28.37-0.06)/38 = 0.745 dB per step min dB -28.37, -27.625 , -26.88
(In reply to Yan Pashkovsky from comment #6) > 1)I've searched over the internet and have found the same issue as mine (35% > too), but with another usb audio card : > https://chrisjean.com/fix-for-usb-audio-is-too-loud-and-mutes-at-low-volume- > in-ubuntu/ > Some notes from this guide helped me: I 've changed "volume = merge" to > "volume = ignore" in > /usr/share/pulseaudio/alsa-mixer/paths/analog-output.conf.common > > Situation now is much much better: headset behave as they should be (the > same like in digital mode), but the maximum volume is not loud enough imho > (120-130% would be fine). Setting volume over 100% causes overdrive (headset > may play louder without overdrives according to my past expirience). > > Maybe making such config default is good idea? (replace merge with ignore) > 687| 0.000) I: [pulseaudio] alsa-sink.c: Hardware volume ranges from -179,00 dB to 0,00 dB. ( 1.687| 0.000) I: [pulseaudio] alsa-sink.c: Fixing base volume to 0,00 dB ( 1.687| 0.000) I: [pulseaudio] alsa-sink.c: Using hardware volume control. Hardware dB scale supported. ( 1.687| 0.000) I: [pulseaudio] alsa-sink.c: Using hardware mute control. ( 1.687| 0.000) D: [pulseaudio] alsa-util.c: snd_pcm_dump(): ( 1.687| 0.000) D: [pulseaudio] alsa-util.c: Soft volume PCM ( 1.687| 0.000) D: [pulseaudio] alsa-util.c: Control: PCM Playback Volume ( 1.687| 0.000) D: [pulseaudio] alsa-util.c: min_dB: -51 ( 1.687| 0.000) D: [pulseaudio] alsa-util.c: max_dB: 0 ( 1.687| 0.000) D: [pulseaudio] alsa-util.c: resolution: 256 Pulseaudio seem ignore softvol plugin PCM as realtek alc892 dB range is obly 9x
state.IntelHDA { control.1 { comment.access 'read write' comment.type INTEGER comment.count 2 comment.range '0 - 64' comment.dbmin -6400 comment.dbmax 0 iface MIXER name 'Front Playback Volume' value.0 64 value.1 64 } Alc892 only have 64 steps and each step is 1dB How do pulseaudio calculate -179dB?
Front + virtual Master + PCM softvol = -64 -64 -51 = -179 do the volume range correct?
1.815| 0.000) D: [pulseaudio] alsa-sink.c: in dB: 0: -27,14 dB 1: -27,14 dB ( 1.815| 0.000) D: [pulseaudio] alsa-sink.c: Got hardware volume: 0: 36% 1: 36% ( 1.815| 0.000) D: [pulseaudio] alsa-sink.c: in dB: 0: -26,82 dB 1: -26,82 dB ( 1 There is no hardware volume at -26.82 dB
why pulseaudio adjust dB by -0.06 -26.88 = -26.82 - 0.06
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