Resolved. It appears to be a BIOS bug. The BIOS in the motherboard was v1.0, and I updated it to v1.4. The problem has now cleared. Thanks to everyone for their help. > -----Original Message----- > From: Thomas Renninger [mailto:trenn@xxxxxxx] > Sent: 24 April 2006 12:01 > To: Roger Lucas > Cc: linux-acpi@xxxxxxxxxxxxxxx > Subject: Re: LG-81 kernel fault in ACPI when over-temperature > > On Sun, 2006-04-23 at 17:28 +0100, Roger Lucas wrote: > > All, > > > > I am setting up an Abit LG-81 motherboard with a 2.8GHz Inter Celeron > CPU. > > The motherboard uses the W83627EHG sensors chip for fan, voltage and > thermal > > monitoring. > > > > I have download, compiled and installed the latest 2.6.16.9 kernel from > > kernel.org and all seemed to be OK. I could read the sensors > information > > from the W83627EHG chip using the lm-sensors system with its W83627EHF > > driver (which is compatible, the 'EHG is just a lead-free variant) and > the > > "sensors" utility. > > > > The current temperatures on the board are: > > SYS 31C > > CPU 48C > > PSU 43C > > > > All seems fine. I then tweaked the sensors.conf file to change the fan > > limts and temperature limits to check the alarms would get set > correctly. > > When I artifically created a CPU over-temperature condition by setting > the > > CPU high temperature threshold at just 40C, two things happended. > Firstly, > > I got a kernel dump for one of the ACPI processes. Secondly, the > machine > > ran unbelievably slowly until I changed the CPU high temperature limit > back > > to a more reasonable 65C. > > > > Can anyone shed any light on what is happening here ? > > > You might want to have a look at that one: > http://bugzilla.kernel.org/show_bug.cgi?id=6315 > > Thomas > - 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
