Messages in this thread | | | Date | Wed, 13 Aug 2003 15:31:26 +0200 | Subject | Re: 2.4.22 APM problems with IBM Thinkpad's | From | Ruben Puettmann <> |
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On Wed, Aug 13, 2003 at 03:13:02PM +0200, Mikael Pettersson wrote: > > This sounds like a well-known APM/local-APIC clash.
nice to know ... > > Never ever use DISPLAY_BLANK if you also have SMP or UP_APIC.
not nice so ;-( how is it with acpi? Same problem?
> With APIC support enabled (SMP or UP_APIC), APM must be constrained: > DISPLAY_BLANK off > CPU_IDLE off > built-in driver, not module
Why will this not be disabled in make *config so that nobody will run in this problem?
> This is because the apm driver does BIOS calls, and many BIOSen > (including the code in graphics cards, e.g. all Radeons it seems) > like to hang if a local APIC timer interrupt arrives.
Yes radeonfb don't like apm -s on this thinkpad. apm -s works but on resume it freezed some on
modprobe radeonfb; sleep 10; rmmod radeonfb; sleep 10; modprobe radeonfb;
and thinkpad freezed .
Ruben
-- Ruben Puettmann ruben@puettmann.net http://www.puettmann.net - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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