[lkml]   [2003]   [Aug]   [13]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: 2.4.22 APM problems with IBM Thinkpad's
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:
> 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 Puettmann
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
More majordomo info at
Please read the FAQ at

 \ /
  Last update: 2005-03-22 13:47    [W:0.112 / U:45.960 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site