linux-kernel - Re: swsusp and suspend2 like to overheat my laptop

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20060809073958.GK4886@elf.ucw.cz>
Date:	Wed, 9 Aug 2006 09:39:58 +0200
From:	Pavel Machek <pavel@...e.cz>
To:	Steven Rostedt <rostedt@...dmis.org>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Suspend2-devel@...ts.suspend2.net, linux-pm@...l.org,
	ncunningham@...uxmail.org
Subject: Re: swsusp and suspend2 like to overheat my laptop

Hi!

> > > A few months ago, I installed suspend2 on my laptop.  It worked great for
> > > a few days, when suddenly my laptop started to get very hot and the fan
> > > costantly went off, and then I started getting these:
> >
> > I take it as "if I keep it for a week powered off, it will not do
> > this".
> 
> Not quite.  It's more of, "if I suspend everynight instead of leaving it
> running or shutting it down, it will do this" or "if I power off at night
> or just leave it running, it will not do this".

Okay, can you try to leave it up for a week or two (no suspends, no
poweroffs) and see what happens?

> > P4 has thermal protection, so you are actually safe.
> 
> Yeah, but still, the keyboard gets pretty hot too, and I'm actually more
> worried about damaging something that is close by than damaging the CPU
> itself.

If you damage something, machine was misdesigned in the first place.

cat we get contents of /proc/acpi/thermal*/*/* ?

> $ sudo modprobe ibm_acpi
> $ ls /proc/acpi/ibm/
> bay        bluetooth  driver     led        thermal
> beep       cmos       hotkey     light      video
> 
> No fan there

Does ibm/thermal work?

Seems like fan is completely controlled by hardware. What may still
help: either saving or avoiding saving reserved parts of memory. But
this is all magic.

How s2ram works would be useful info.
								Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/