I first experienced that bug on kernel 2.6.20.14 - where frequency scaling begin to work on my IBM T43p. Now when having the cpu scaled to 100%, my laptop will halt due to reaching cpu temperature limit.
the problem seems to be the scaling-steps in /proc/acpi/ibm/fan I can manually speed the fan up by "echo level 7 > /proc/acpi/ibm/fan" which will bring the speed up to "4263" on the lowest level (level 1) the speed is quoted "3268" Comparing the noise with the fan-noise while running windows, level 7 does not seem to be the maximum at all. When having fan at auto-level at heavy cpu-load, fan-speed is increasing slowly, but will never be over speed "4263". When having the fan in disengaged mode (echo 0x2F 0x40 > /proc/acpi/ibm/ecdump), it will speed up to it's full speed "6859". Why is fan speed controlled by ibm-acpi and not by the bios? Running feisty (2.6.20-15-386) on a T43p 1,86 GHz Pentium M. -- CPU overheats during high usage "throttling <not supported>" https://bugs.launchpad.net/bugs/22336 You received this bug notification because you are a member of Ubuntu Bugs, which is a direct subscriber. -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
