Messages in this thread | | | Date | Fri, 10 Jun 2011 10:39:56 +0200 | From | Michal Hocko <> | Subject | Powersave doesn't work for snd_hda_intel with 3.0.0-rc2 |
| |
[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.
-- Michal Hocko SUSE Labs SUSE LINUX s.r.o. Lihovarska 1060/12 190 00 Praha 9 Czech Republic
| |