[changed subject]
As a summary: I am loosing sound after powe_save timeout expires if there is no device activity. The only way how to get sound back is to unload the module and load it again.
On Fri 10-06-11 10:17:09, Takashi Iwai wrote:
At Fri, 10 Jun 2011 09:56:40 +0200, Michal Hocko wrote:
Note that the one-minute thing happens only when you unplug AC cable, supposedly.
Hmmm, I was plugged during testing all the time. OK, this looks like a separate issue. I will repost it as a separate thread once we are done with this. Any idea who to CC?
First off, check /sys/modules/snd_hda_intel/parameters/powersave value. If this is set to non-zero, someone must have played with it, e.g. pm-utils or such.
Yes, it contains 60. And the value comes from: CONFIG_SND_HDA_POWER_SAVE_DEFAULT=60
which defaults to 0 so it must have been changed by me some time ago (really do not remember when and why, though). Anyway I have the same value in 2.6.39 kernel as well and I do not see any problem there. So it looks like a regression.