Noisy fan and slowness after upgrade to Gutsy
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
Ubuntu |
New
|
Undecided
|
Unassigned |
Bug Description
After upgrading from Feisty to Gutsy, on my old Asus L3000D the fan starts when the cpu temperature reach 70C and it never stops. On the same moment, the system starts going very slow, running at a fraction of the cpu power. I didn't find a way to fix this issue, I need to restart the system and keep cpu temperature below the 70C. I can reproduce this behavior using glxgears. See below:
malex@laptop:~$ date
gio ott 25 10:35:41 CEST 2007
malex@laptop:~$ glxgears
1500 frames in 5.0 seconds = 299.217 FPS
1695 frames in 5.1 seconds = 331.437 FPS
1695 frames in 5.2 seconds = 328.003 FPS
1695 frames in 5.2 seconds = 327.978 FPS
1695 frames in 5.3 seconds = 322.321 FPS
1695 frames in 5.1 seconds = 329.639 FPS
1695 frames in 5.2 seconds = 327.958 FPS
1695 frames in 5.2 seconds = 327.182 FPS
1695 frames in 5.2 seconds = 328.103 FPS
565 frames in 6.9 seconds = 81.580 FPS <===== here the fan starts spinning
339 frames in 7.5 seconds = 44.943 FPS
339 frames in 7.5 seconds = 45.467 FPS
339 frames in 7.5 seconds = 45.193 FPS
malex@laptop:~$ date
gio ott 25 10:37:07 CEST 2007
When booting with old kernel (2.6.20-16) this issue disappears, so it looks like a kernel bug. Again, with old kernel, running the glxgears program doesn't heat the cpu as the new kernel, and his temperature never reaches the trigger value of 70C.