> > http://pastebin.com/1fNAViKp > > PulseAudio finds only the headphone path based on the information that > the kernel gives. The card doesn't seem to have a separate headphone > jack itself[1], so I suppose the "Headphone" mixer element controls the > front panel output volume, if you have such thing hooked to the card. > > I think the kernel should create a jack element for the back panel > output (at least a phantom jack, if proper jack detection can't be > implemented). That would allow PulseAudio to distinguish between the > back and front panel outputs. As a workaround, I think removing the > contents of /usr/share/pulseaudio/alsa-mixer/paths/analog-output- > headphones.conf would make the volume control work again (just delete > the contents, not the file itself). > > The reason why this worked before version 7.1 is that your "Master" > volume element has more than 2 channels, which PulseAudio couldn't > handle, so the headphone path (which includes the "Master" element) was > disabled. PulseAudio still can't handle volume elements with more than > 2 channels, but as of 7.1, such elements are just ignored, so they > don't disable the whole path. > > [1] https://www.asus.com/Sound-Cards/Xonar_DS/specifications/ > It seem that there is a bug in alsa mixer api which combine volume and mute switch with different number of channels (items) but the mixer api assume both controls have same number of channels(items) control.1 { iface MIXER name 'Master Playback Volume' value.0 121 value.1 121 value.2 121 value.3 121 value.4 121 value.5 94 value.6 121 value.7 121 comment { access 'read write' type INTEGER count 8 range '67 - 127' dbmin -6000 dbmax 0 dbvalue.0 -600 dbvalue.1 -600 dbvalue.2 -600 dbvalue.3 -600 dbvalue.4 -600 dbvalue.5 -3300 dbvalue.6 -600 dbvalue.7 -600 } } control.2 { iface MIXER name 'Master Playback Switch' value true comment { access 'read write' type BOOLEAN count 1 } } Simple mixer control 'Master',0 Capabilities: pvolume pswitch pswitch-joined Playback channels: Front Left - Front Right - Rear Left - Rear Right - Front Center - Woofer - Side Left - Side Right Limits: Playback 67 - 127 Mono: Front Left: Playback 121 [90%] [-6.00dB] [on] Front Right: Playback 121 [90%] [-6.00dB] [on] Rear Left: Playback 121 [90%] [-6.00dB] [on] Rear Right: Playback 121 [90%] [-6.00dB] [on] Front Center: Playback 121 [90%] [-6.00dB] [on] Woofer: Playback 94 [45%] [-33.00dB] [on] Side Left: Playback 121 [90%] [-6.00dB] [on] Side Right: Playback 121 [90%] [-6.00dB] [on] -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.freedesktop.org/archives/pulseaudio-discuss/attachments/20151106/3b0fd1cd/attachment.html>
