From: Pavel Machek <pavel@ucw.cz>
To: Jiri Slaby <jirislaby@gmail.com>
Cc: linux-acpi@vger.kernel.org,
Linux-pm mailing list <linux-pm@lists.linux-foundation.org>,
LKML <linux-kernel@vger.kernel.org>
Subject: Re: Fan runs full speed after S3 sometimes (regression)
Date: Sat, 21 Aug 2010 19:05:51 +0200 [thread overview]
Message-ID: <20100821170551.GA27159@elf.ucw.cz> (raw)
In-Reply-To: <4C6E233A.5000209@gmail.com>
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.
Well; if it survives warm reboot, then it looks like BIOS problem...
> >>> 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.
Ok, so this looks like the kernel problem, on the other hand. Two
different problems?
Pavel
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
next prev parent reply other threads:[~2010-08-21 17:05 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-08-10 11:20 Jiri Slaby
2010-08-10 18:39 ` Jiri Slaby
2010-08-20 6:31 ` Pavel Machek
2010-08-20 6:39 ` Jiri Slaby
2010-08-20 23:30 ` Rafael J. Wysocki
2010-08-21 17:05 ` Pavel Machek [this message]
2010-09-08 13:27 ` Jiri Slaby
2010-09-08 20:26 ` Rafael J. Wysocki
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