> > After Ubuntu 10.04 LTS (Ubuntu 10.10 works, Ubuntu 11.04 doesn't work at > all, Ubuntu 11.10 and newer have the bug), the headset only plays sound > at maximum volume level if the volume is turned down just a little no > sound is being played. > > I have filled a Ubuntu bug for 12.04 LTS at: > https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1200925 . > I was advised to contact this mailing list. > > AlsaInfo for Ubuntu 12.04 LTS with the bug: > http://www.alsa-project.org/db/?f=3bde76b15a15f585418a6a4a4703ca67fd4cdf42. > AlsaInfo for Ubuntu 10.04 LTS without the bug: > http://www.alsa-project.org/db/?f=5824e55345c3f7128937405254485a489886b9dc > It is strange that dB range of your usb audio is 0 to 0.14 (only small gain and no attenuation) In 10.04 LTS pulseaudio provide software volume control ( 1.095| 0.000) I: alsa-sink.c: Driver does not support hardware volume control, falling back to software volume control. control.6 { comment.access 'read write' comment.type INTEGER comment.count 1 comment.range '0 - 37' comment.dbmin 0 comment.dbmax 14 iface MIXER name 'Speaker Playback Volume' value 30 } In 12.04 pulseaudio did not provide software volume attenuation and use the speaker playback volume control -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.freedesktop.org/archives/pulseaudio-discuss/attachments/20130715/63adf6c9/attachment.html>
