On Friday, August 20, 2010, Jiri Slaby wrote: > On 08/20/2010 08:31 AM, Pavel Machek wrote: > > On Tue 2010-08-10 20:39:44, Jiri Slaby wrote: > >> On 08/10/2010 01:20 PM, Jiri Slaby wrote: > >>> Hi, > >>> > >>> till I was running on 2.6.34-rc5-mm1 (mmotm) and earlier everything was > >>> fine. Now, I'm running 2.6.35-rc6-mm1 (.35-rc5-mm1 was the same) and > >>> sometimes when the computer (desktop) returns from S3, the CPU fan is > >>> running at full speed making a big noise. > >> > >> Just to add, full power cycle is needed to get rid of that. Warm reboot > >> is not enough. > > > > Seems like bios problem... Update bios? > > I don't think so, it had been working for more than 2 years before this > issue appeared. > > >>> I don't know how to debug that. Bisection is out of question -- it > >>> happens once in 10 or 20 cases. There are no fan entries in /sys. > > > > Well, doing 20 suspends in a row from a script should not be too bad. > > 20 is just a guess. I haven't seen it for pretty few days until the day > before yesterday. And it looks like CPU1 is brought up a half way. When > the fan was at full speed I tried: > echo 0 > /sys/devices/system/cpu/cpu1/online > and whole system freezed. Otherwise this commands succeeds. > > I'll load a crash kernel prior turning the CPU off next time. You can also try to use RTC wakealarm to run suspend/resume in a tight loop. Rafael _______________________________________________ linux-pm mailing list linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/linux-pm
