On Friday, 20 of June 2008, Matthew Garrett wrote: > On Fri, Jun 20, 2008 at 01:53:58PM +0200, Rafael J. Wysocki wrote: > > > What exactly I observe is that in this case: > > 1) The cooling fan is 100% on, as though the box were overheating, which seems > > to indicate some serious confusion of the platform (the mechanism turning > > the fan 100% on is supposed to be transparent to software). > > 2) Everything seems to slow down substantially, at least as soon as X is > > started. > > What does ACPI claim the trip points are set to in this case? On the > 6125, if IRQ 2 is enabled in the APIC then the DSDT sets all the thermal > trip points to 16 degrees C. I suspect this means that enabling IRQ 2 is > the wrong thing to do on this chipset. Ah, indeed, thanks for the hint. This is the output of $ cat /proc/acpi/thermal_zone/TZ*/trip_points in the failing case: critical (S5): 105 C passive: 16 C: tc1=1 tc2=2 tsp=100 devices=C000 C001 active[0]: 16 C: devices=C34F active[1]: 16 C: devices=C350 active[2]: 16 C: devices=C351 active[3]: 16 C: devices=C352 critical (S5): 100 C passive: 16 C: tc1=1 tc2=2 tsp=300 devices=C000 C001 critical (S5): 100 C passive: 16 C: tc1=1 tc2=2 tsp=300 devices=C000 C001 (also available at: http://www.sisk.pl/kernel/debug/20080620/trip-points.txt). So, the observed slowdown may be a result of throttling. Thanks, Rafael -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
