linux-kernel - Re: PROBLEM: Suspend corrupts bios clock since 2.6.21

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: <200708270045.09050.rjw@sisk.pl>
Date:	Mon, 27 Aug 2007 00:45:08 +0200
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	Robert Hancock <hancockr@...w.ca>
Cc:	Andreas Steffan <a.steffan@...s-online.de>,
	linux-pm@...ts.linux-foundation.org, pavel@...e.cz,
	linux-kernel@...r.kernel.org
Subject: Re: PROBLEM: Suspend corrupts bios clock since 2.6.21

On Sunday, 26 August 2007 21:38, Robert Hancock wrote:
> Andreas Steffan wrote:
> > Hallo everybody,
> > 
> > I am running fedora core 7 on my Dell latitude D810 notebook (BIOS
> > rev A05).
> > 
> > Since 2.6.21 I found that suspending (to disk and to ram) corrupts
> > the bios clock most of the time (not always). The corruption is
> > happening during suspend. When I enter the system bios right after
> > I switch the system back on, I find the bios clock is set to a time
> > far in the future (many years). I guess that problem is related to
> > the clock changes that where introduced with 2.6.21.
> > 
> > Please let me know if you want me to provide further information to
> > get this problem fixed.
> > 
> > If there is a known quirk to work around this problem, I would
> > really appreciate a hint.
> > 
> > PS: I have not yet tried 2.6.22.4-65.fc7, but the latest 2.6.22 kernel
> > before showed the same behaviour for me.
> 
> Please check if PM_TRACE is enabled in your kernel configuration. It 
> will do this intentionally.

Yes, but only if you have "1" in /sys/power/pm_trace ...

Greetings,
Rafael
-
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/