[alsa-devel] Fixing ALC269 the right way?
david.henningsson at canonical.com
Fri Jul 30 09:37:33 CEST 2010
Here's what I try to fix by playing around with it in hda-emu, it seems
like more than one thing is broken here, but let's start with playback.
This machine has one internal speaker and one line-out. Codec proc file
Here's my analysis so far:
1) If there's one internal speaker and one line-out (rather than
headphone-out), should the internal speaker auto-mute? What's standard
2) There are two DAC nids, 0x02 and 0x03, but only 0x02 is used (i e
activated on playback). But line-out is connected (via nid 0x0d) to DAC
0x03, so there is no sound on line-out.
Should we try to activate DAC nid 0x03 or try to move line-out to DAC
0x02? And is either possible through just fiddling with pin_configs
(which Takashi preferred), or should we add fixup verbs, or a completely
new model? What would upstream prefer in this case?
3) Another strange thing is the controls, there is both Master Playback
and Speaker Playback Volumes and Switches, but they both control
Volume=0x02 and Switch=0x14, and setting one then getting the other
returns the wrong result since they're not updating each other's cached
values (I assume). So we should try to get rid of one of these, but how
depends on the answer to question 1...
Thanks in advance for helping out!
David Henningsson, Canonical Ltd.
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