Ubuntu
linux package

  1. Bug #370173
  2. Comment #274

Comment 274 for bug 370173

Revision history for this message
Abdul Bijur V. A. (abdulbijur) wrote : Re: Ubuntu 9.04 laptop overheat and shutdown

I am _very_ inconclusive.

I booted up on 2.6.30.1 on my thinkpad t61. the initial temperature dangled around 47 to 49.

The fan (output of cat /proc/acpi/ibm/fan) shows rpm of 2900.

then I ran the CPU stress :

stress --cpu 16 --vm 2 --vm-bytes 128M

During the stress the fan as the output of the above remained at 2900(+/- 100) itself. and temperatures (from acpi -V) rose to upto 73 before I killed the stress call.

After killing the fan stayed at around ~ 2900, but the temperatures rreturned to ~49 pretty soon.

I am not sure why the bloody acpi is NOT controlling the fan speed when the CPU temperature is increasing. I tried listening in on the cpu to see if the fan speed is increasing but cudnt tell any difference.

If someone could interpret these results it would be great.

Cheers,
Bijur