I have a Thinkpad X60 with an Intel Core Duo T2400. In /proc/acpi/thermal_zone, I'm getting two subdirectories, each with their own set of files:
The interesting thing is that the two sets of files are not consistent - sometimes they don't even show the same temperature.
The reason I'm interested in this is that I think it's behind some of my cpufreq problems. Sometimes the kernel decides that I just can't raise the max frequency above 1GHz, because its been thermally limited (I've put printks in to confirm that its the ACPI thermal limit on the policy notifier chain which is limiting the max speed). It seems to me that having a thermal zone for each core is a BIOS bug, since they're really the same chip, but the THM1 entries should be ignored. I don't believe
the CPU has ever approached either 97 C, let alone 127; while I put it under a fair amount of load, it is sitting on a desktop with no airflow obstructions, so if it really is overheating it suggests a serious design problem with the hardware.
But I'm just speculating; I'm not really sure what all this means. Any clues?