Re: Screwy clock after apm suspend

[Nigel Cunningham <ncunningham@linuxmail.org>]

Hi.

We've seen this problem with Suspend2 as well. One of my Suspend2 users
has looked into the problem and suggested a couple of solutions; I'll
take a look at them shortly and send a patch here as well.

Regards,

Nigel

On Wed, 2004-12-29 at 11:29, Brannon Klopfer wrote:
> 2.6.10
> Slackware 10/-current
> IBM ThinkPad 600E
> ----------------
> 
> 2.6.10 screws up my system clock.
> Two kernel/hardware clock readings, before and after suspend.
> -------------
> plaz@gonzo:~$ date ;hwclock
> Tue Dec 28 15:52:39 PST 2004
> Tue Dec 28 14:54:07 2004 -0.503621 seconds
> #suspend, resume
> plaz@gonzo:~$ date ;hwclock
> Tue Dec 28 16:11:58 PST 2004
> Tue Dec 28 15:04:06 2004 -0.168262 seconds
> ---------------------
> These are all when the comp is on without suspend (difference about the 
> same throughout).
> ----------------
> plaz@gonzo:~$ date ;hwclock
> Tue Dec 28 16:14:52 PST 2004
> Tue Dec 28 15:07:00 2004 -0.251812 seconds
> plaz@gonzo:~$ date ;hwclock
> Tue Dec 28 16:15:26 PST 2004
> Tue Dec 28 15:07:34 2004 -0.236138 seconds
> plaz@gonzo:~$ date ;hwclock
> Tue Dec 28 16:19:48 PST 2004
> Tue Dec 28 15:11:57 2004 -0.908540 seconds
> plaz@gonzo:~$
> ------------
> I did not have this problem with 2.6.9. My machine uses APM, clock 
> stores local time (specified in kernel config). I use PIT for 
> timesource, as others were losing ticks when on battery power (changes 
> CPU clock speed). Again, did _not_ have this problem with 2.6.9.
> 
> Be glad to try out patches,
> Brannon Klopfer
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-- 
Nigel Cunningham
Cyclades Software Engineer
Canberra, Australia

http://www.cyclades.com

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