At Tue, 13 Mar 2007 20:21:08 -0400, Randy Cushman wrote: > > In attempting to implement my proposed mixer control name changes (see > " RFC: Enhance AD AC '97 mixer control names") I have > encountered behavior that makes no sense to me: If module > snd_ac97_codec does not create a control with the name 'PCM Playback > Volume' then something else creates a control with that name. Not > surprisingly, this phantom control serves no useful purpose in my > environment, as it has no affect on AC '97 control registers. This is done by softvol plugin used in the default configuration for many onboard chip drivers. See alsa-lib/src/conf/cards/*.conf. That's actually a point that I missed. Many apps assume either "Master" or "PCM" mixer exists. Thus, removing PCM isn't nice for them. Now I'm considering whether changing the volume names in the driver level is actually a better choice. It's basically simpler, and I prefer a simpler solution. OTOH, it may bring other messes because of the name incompatibility like above. So, the cleanest solution would be some mangling in the user-space, i.e. inside alsa-lib. But, it's a bit harder way. So, before doing this -- we have to *seriously* consider to get consensus what control names should be used as standard and how they behave. Maybe better to start another thread for discussing this... Takashi ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/alsa-devel
