Re: Unexpected shutdown - perhaps ACPI related?

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On Thu, 9 Oct 2008, Thomas Renninger wrote:

> On Thursday 09 October 2008 13:40:36 Brian Schau wrote:

> > BTW, the system is a dual core 2GHz system.
> >
> > > grep . /proc/acpi/thermal*/*/* /proc/acpi/fan/*/*
> >
> > root@stacy:~# grep . /proc/acpi/thermal*/*/* /proc/acpi/fan/*/*
> > /proc/acpi/thermal_zone/THRM/cooling_mode:<setting not supported>
> > /proc/acpi/thermal_zone/THRM/polling_frequency:<polling disabled>
> > /proc/acpi/thermal_zone/THRM/state:state:                   ok
> > /proc/acpi/thermal_zone/THRM/temperature:temperature:             73 C
> > /proc/acpi/thermal_zone/THRM/trip_points:critical (S5):           104 C
> > grep: /proc/acpi/fan/*/*: No such file or directory

> 73 C is beyond 72 C :)
> 104 sounds as if the HW would switch off before, could still be a thermal 
> issue. Hmm, but the fans seem to be controlled by HW...
> 
> > wrt.to the last line (grep error) - the 'fan' modules is loaded but
> > there are not
> > files present in the /proc/acpi/fan directory.
> >
> > Also, when I see the shutdowns it occurs as you described above - the
> > hardware shutdown.

> Means, the power just gets switched off?
> You should try to reproduce this easier somehow. Heavy battery/thermal 
> reading, switching cpufreq up and down or something?
> How often does that happen?
> If it happens often you could try to exclude/not load ACPI drivers, cpufreq 
> drivers. Switch off C-states. These are good candidates.
> 
> Does this only happen with X?
> Maybe using another X driver (vesa fb) solves it?
> 
> Did this machine ever worked fine with older kernels/distributions?

Also, try running memtest overnight.

cheers,
-Len

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