Closing this bug with Won't fix as this kernel / release is no longer supported.
Please feel free to open a new bug report if you're still experiencing this on
a newer release (Bionic 18.04.3 / Disco 19.04)
Thanks!
** Changed in: linux (Ubuntu)
Status: Incomplete => Won't Fix
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https://bugs.launchpad.net/bugs/429109
Title:
0x103c08b0 needs HP_ONLY ac97 quirk
Status in Linux:
Incomplete
Status in linux package in Ubuntu:
Won't Fix
Status in pulseaudio package in Ubuntu:
Invalid
Bug description:
Binary package hint: pulseaudio
I'm running latest Karmic on a HP TC1100. GNOME volume slider works as
follows (you can examine it by running alsamixer -c 0 and looking at ALSA mixer
levels):
1. When the volume slider is at 0, both PCM and Master are at 0
2. Now when we start increasing the volume, PCM gets increased and Master
starts at 0 (but unmuted), until PCM is equal to 71%; this is at about 10%
slider volume
3. Then Master is increased from 0 to 100% while PCM is kept at 74%, this
happens until about 63% volume
4. Finally, PCM is increased from 74% to 100%
This behavior, apparently implemented in PulseAudio, is perfect (it
ensures minimum distortion from cheap audio cards), but I have one
problem: phase 3 only increases Master, and ignores Headphones. This
means that the volume slider does nothing to headphone volume between
approximately 10 and 63%. The GConf setting at
/desktop/gnome/sound/default_mixer_tracks that was used to set this
doesn't work anymore.
An acceptable workaround would be to tie together Master and Headphone
channels at the ALSA level, so that setting one would update the
other, but I have no idea how to do this. A proper solution would be
to update both Master and Headphones channels in phase 3.
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