Re: peculiar suspend/resume bug.

From: Nigel Cunningham
Date: Tue Aug 15 2006 - 20:17:01 EST

Hi Dave.

On Tue, 2006-08-15 at 18:10 -0400, Dave Jones wrote:
> Here's a fun one.
> - Get a dual core cpufreq aware laptop (Like say, a core-duo)
> - Add a cpufreq monitor to gnome-panel. Configure it
> to watch the 2nd core.
> - Suspend.
> - Resume.
> Watch the cpufreq monitor die horribly.
> I believe this is because we take down the 2nd core at suspend
> time with cpu hotplug, and for some reason we're scheduling
> userspace before we bring that second core back up.
> Anyone have any clues why this is happening?

If you hotunplug and replug the cpu using the sysfs interface, rather
than suspending and resuming, does the same thing happen?



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