regression in karmic thermal control
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
Linux |
Expired
|
Medium
|
|||
linux (Ubuntu) |
Won't Fix
|
Medium
|
Unassigned | ||
Bug Description
I believe there may be a regression in thermal control which was introduced in karmic a few days ago. Looking at the packages that aptitude updated, I believe the problem may have started after the linux-image package was upgraded from 2.6.31-10.32 to 2.6.31-10.34. But of course, we ddi see a lot of fairly intrusive changes in a lot of key packages during the last few days as well.
My Thinkpad X24 shut down a couple of times over the last few days without any warning. It's never done that before. I believe the machine may have shut down on its own to prevent damage from overheating. I should say though that the machine wasn't really doing much (but I think Firefox kept it busy nonetheless with the gazillion of tabs I have open all the time ;-)). The machine felt only mildly warm when touched, the fan had been running constantly but at a fairly low speed (judging from the little noise it was making). I added information from the temp sensor to conky and indeed, temperature was going straight for 92°C. At that point, I throttled CPU frequency and the temperature dropped sharply.
To me, it looks like the fan control is not in line with the temperature. 92°C should have the fan going full blast, but I don't think it was going that hard.
$ cat /proc/acpi/
critical (S5): 95 C
passive: 92 C: tc1=5 tc2=2 tsp=600 devices=CPU0
Changed in linux (Ubuntu): | |
status: | New → Confirmed |
importance: | Undecided → Medium |
Changed in linux (Ubuntu): | |
status: | Confirmed → Triaged |
Changed in linux: | |
status: | Unknown → Incomplete |
Changed in linux: | |
status: | Incomplete → Confirmed |
Changed in linux: | |
status: | Confirmed → Incomplete |
Changed in linux: | |
status: | Incomplete → Expired |
Changed in linux: | |
importance: | Unknown → Medium |
Am having similar problems with an Intel 2.8GHX board.... At 77-C am getting waaay too many messages from the kernel, and can't even break in to kill the machine. Have filled up the root directory twice in the last two days. After restarting the machine (and blowing all the dust out of CPU and other spots) the temp seemed to be settling down to around 37-C. It came down from 46-C so was heading in the right direction. Then within 5 minutes, the temp was back up to 77-C. I didn't get a chance to look at the fan RPM but it was ok when I restarted the machine... around 2670 rpm and looking good.