[alsa-devel] No sound after suspend-to-ram

George Gugulea gugulea at gmail.com
Thu Oct 22 10:38:37 CEST 2015


After a fresh reboot, the sound works ok but if I put the computer to
sleep (pm-suspend), after it wakes up there is no sound anymore.

I did try 'alsa force-reload' after suspend but still no sound.
After 'pm-hibernate' sound is back again.

I found an old thread here:
https://bugzilla.kernel.org/show_bug.cgi?id=49421 where Michael seems
to have the same problem which is still unsolved; maybe I can help
with more info.

I attached the 'alsa-info.sh' output before and after suspend:
'alsa-info.txt.before' and 'alsa-info.txt.after' (as a patch to stay
below 80k mail size rule: diff -u alsa-info.txt.before
alsa-info.txt.after > alsa-info.txt.patch)

The only difference between before and after is this one:
@@ -241,7 +241,7 @@
 Node 0x11 [Audio Input] wcaps 0x10051b: Stereo Amp-In
   Amp-In caps: ofs=0x11, nsteps=0x2e, stepsize=0x03, mute=1
   Amp-In vals:  [0x12 0x12]
-  Converter: stream=4, channel=0
+  Converter: stream=0, channel=0
   SDI-Select: 0
   PCM:
     rates [0x160]: 44100 48000 96000


The PC is here: http://www.dell.com/us/p/xps-27-2720-aio/pd?ref=PD_OC,
but the 2y older version with no touch

If I boot into windows (8.1) everything works great, including sound
(even after suspend)

-- 
gg
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