no sound after resume with snd-intel8x0 driver and alsa on IBM TP X24 - solved

i have found different suggestions - and statements about whether this problem actually exists. it did for me.

with Debian GNU/Linux ranging from sarge to etch and lenny, and corresponding alsa packages, from kernel 2.6.17 up to 2.6.22 i didn't quite manage to get sound going after resume.

• first solution was to unload the driver and reload it again - which crashed all applications that were using sound at the time of suspend...

• now, i only do (in /etc/hibernate/common.conf):

OnSuspend 98 /etc/init.d/alsa suspend
OnResume 04 /etc/init.d/alsa resume
OnResume 10 sleep 3 && \
amixer set Master mute >/dev/null 2>&1 && \
amixer set PCM mute >/dev/null 2>&1 && \
amixer set Mic mute >/dev/null 2>&1 && \
amixer set Mic unmute >/dev/null 2>&1 && \
amixer set PCM unmute >/dev/null 2>&1 && \
amixer set Master unmute >/dev/null 2>&1

References:

1. http://en.thinkwiki.org/wiki/Swsusp