[Bug 21574] Re: sound gone after resuming from sleep on hp nx8220

[Mario Becroft]

I have this exact problem with HP nw8240. After suspend-to-RAM, the
internal speakers do not work, but headphones are ok. A suspend-to-disc
(power off) cycle fixes the problem.

I tried comparing all the AC97 registers and other info in /proc/asound
but they are identical in the working and not-working cases.

I have not done any ALSA development so I am not sure if there is an
easy way of playing with the AC97 registers with a userspace program.
Otherwise I am not sure how to easily debug this problem. Obviously
something subtle has to be initialised after resume.

Is anyone else working on this?

-- 
sound gone after resuming from sleep on hp nx8220
https://launchpad.net/bugs/21574