[ltp] Suspend-to-RAM corrupts audio
Bill Sheppard
linux-thinkpad@linux-thinkpad.org
Thu, 12 Jan 2006 08:41:58 -0800
Hi, All,
I've got a T42 running SuSE 9.3 with KDE. Most everything works great,
but upon resuming from Suspend-to-RAM I find that the audio is either
non-functional, garbled, or only comes from one channel (so far always
the right). I can restore audio by killing artsd, stopping alsasound,
removing all files from /tmp/ksocket-[username], restarting artsd, and
restarting alsasound, but if I'm only getting sound from one channel
this will still be the case after going through these steps. I've found
if I Suspend-to-Disk (swsusp) the audio will be correct upon
restarting. I'm guessing the audio hardware (i810) is still getting
power during suspend-to-RAM and isn't being reinitialized properly upon
resume, but when doing Suspend-to-disk with a full power-down the
hardware is being reset.
Stopping alsasound seems to be removing all the snd- modules, so
re-modprobing them doesn't help the one-channel issue.
Any ideas? Anyone else see this behavior?
Bill
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Bill Sheppard Industry Marketing Manager
bill.sheppard@sun.com Consumer and Mobile Systems Group
(408) 404-1254 (x68154) Sun Microsystems, Inc.