Comment 120 for bug 22336

Revision history for this message
Benjamin COUHE (voraistos) wrote :

Just a comment: My CPU doesnt overheat when there is high CPU usage, but does when there is not. -yep, how strange is that ?-

With previous versions of ubuntu -starting from Hoary-, the laptop never had any problem, and i always got all hardware support. Thanks elitegroup for using standards :) . Anyway, i have been running cpuburn (burnP6) for 20 minutes now, and openoffice.org loads just as fast as usual, and firefox sucks as usual as well. Now the important and "funny" point: when i dont use my cpu, or use it in a way that doesnt require more than 600mhz, frequency scaling goes down automatically to min. 600 mhz. BUT on the version 7.4 (with the new kernel), when i look at my cpufreq "ondemand" mode, it keeps going between 600 mhz and 1.5 ghz, (usually befor to go to 1.5, i see itgoing to 1.2 hz) those jumps are very fast, and cpu usage is 0 or 1 % (which is normal when i am not using the PC) However it shouldnt go to 1.5 ghz if it doesnt need it, and at 1.5 ghz, the fan always rotates, and in this case it doesnt. If i limit the cpu freq. at some point, then the PC wont crash. If i leave it "on demand", then it will. 25 minutes now, and no sign of a bug, even my hdd still rotates (while its known to be sensitive, my hd sucks ass). I hope this info related to the "modes" on demand and conservative is helpfull for you guys to find the bug.