ALSA: Conexant CX20585 (thinkpad t510) speaker powersave regression
From: Kevin Fenzi
Date: Sat Dec 22 2012 - 16:33:12 EST
Greetings.
I've got an issue with sound on my t510. It started in the late 3.4.x
kernels. Sound works on boot and for 5-10min after, then the speakers
stop working at all.
I posted a while back on the alsa-users list, and someone else had the
same issue:
http://www.mail-archive.com/alsa-user@xxxxxxxxxxxxxxxxxxxxx/msg28769.html
It seems that the speakers(?) are getting moved to state D3 and turning
off. You can manually get it to come back for a few minutes by using
hda-verb to move it back to D0:
hda-verb /dev/snd/hwC0D0 0x1f SET_POWER_STATE 0
http://www.alsa-project.org/db/?f=fd5ca157b2e76942df5ce2f0ae1a2817f3f08afd
is my alsa-info.
I'd file a bug on the alsa bug tracker, but it still seems to be down
(for many months now?). No response on alsa-users, so now that I have a
bit of time, I am posting here in hopes someone can look. ;)
Happy to provide more info or try things.
kevin
Attachment:
signature.asc
Description: PGP signature