At Fri, 01 May 2009 17:25:14 -0500 Paul Hartman <paul.hartman+gen...@gmail.com> wrote:
> On Fri, May 1, 2009 at 4:43 PM, Allan Gottlieb <gottl...@nyu.edu> wrote: >> I have two machines desktop (x86_64) and laptop (i686), both with HDA Intel. >> On the laptop all is well. >> On the desktop playback is fine, but recording is not, e.g., when using >> skype my son cannot hear me, but I can hear him. >> >> On the (working) laptop alsa mixer shows two (stereo) volumes, >> capture and digital. The nonworking desktop has only digital > > If you have not already done so, check out the HDA documentation at: > > /usr/src/linux/Documentation/sound/alsa/HD-Audio.txt and HD-Audio-Models.txt I don't have either of those files. The only close match is /usr/src/linux/Documentation/sound/alsa/hda_codec.txt but that doesn't seem to have what you describe. For example it does not contain the string 6stack. allan > Sometimes (usually?) alsa fails to detect the exact configuration of > your audio chipset. You can force it to use a certain configuration > when the alsa modules are loaded. For example, I have to use > "6stack-digout" on mine.