Ubuntu
alsa-lib package

  1. Bug #204898
  2. Comment #16

Comment 16 for bug 204898

Revision history for this message
xtknight (xt-knight) wrote :

Try my new ppa (ubuntu4~ppa1): https://launchpad.net/~xt-knight/+archive/ppa

Plus, set Master to 100% and adjust PCM. This is a better method, because Master goes from 0-31 and PCM goes from 0-255, at least on most cards. PCM is a higher resolution adjustment. It works with PulseAudio in my experience. I think PulseAudio adjusts through ALSA anyway. This is why I made the change at such a low level. The constant is now 0.5 instead of 0.7.

Don't use PulseAudio's volume control in pavucontrol. I think there's other serious bugs in that right now, at least in Karmic. Use alsamixer under the terminal and set Master to 100%, adjust PCM. Sometimes you have to press the down or up arrow multiple times simply because all the volumes you adjusted to map to the same volume. Or maybe it's a rounding issue.

dB gain readings may be broken with this patch. It should be able to be fixed easily.