Comment 24 for bug 94862

This is also happening in Gutsy with 2.6.22-14-generic (installed version 2.6.22-14.47) i386 on an Abit AN-M2 motherboard with an Athlon 64 X2 4800+.

The lm_sensors readings are normal when this occurs, and a front panel temperature gauge which reads from a temperature probe stuck in the heat sink doesn't show anything abnormal, either. The system randomly decides that it has reached 121 C (and /proc/acpi/thermal_zone/THRM/temperature shows this wacky temperature as well) and forces a shutdown. The CPU and case fans are running. I tried updating to the latest BIOS from Abit, and there has been no change.

The problem tends to occur out of the blue, and seems independent of CPU activity - I've had it happen while browsing packages in synaptic (lm_sensors reports 26 C), and while transcoding in MythTV (lm_sensors reads 52 C). It sometimes happens after days of uptime, sometimes after minutes of uptime.

I've attached a snippet of /var/log/syslog where this has happened.