Comment 141 for bug 370173

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e13 (erkko-roosimae-deactivatedaccount) wrote : Re: Ubuntu 9.04 laptop overheat and shutdown

michael, having this as my primary computer for about 7 months now and using it every single day with all the same programs running the same way in quiet environment, one gets used to how this thing behaves, how fast fan rotates and ho hot it gets. as does one notice how often and for how long ondemand cpu gets stepped to higher speed.

my laptop does not shut down. it just jumps its speed up way too often compared to intrepid. fan noise is very much the same and when getting hotter, fan also speeds up. never ran stresstest to cause thermal shutdowns. fan speeds up anyway, when i let this thing jump to whatever speeds it feels like.

but because i cannot be bothered to start using that as a desktop-computer, this heat thing is just not acceptable. as would not be increased fan speeds. this just is not justified for things i run on that computer while cpu set to ondemand. it needs to be cool and not too noisy. and it used to be like that with intrepid. still is with windows. not with jaunty.

clear change after jaunty were feature that 2 cores can now be set independently to run whatever speed. and right after upgrade, all the same programs running and fan making all the same noise, all that was different, was cpu speedups occuring more often and lasting far longer... talk all about you want about fan speed being not correct. i know how much processor my programs used to need and how hot that made my computer and how fast fan used to run to cope with that. fan still runs the same, but same temp can only be achieved by setting cores to 800M or 1.2G. they used to be set to ondemand and mostly idle machine with nice-d boinc running used to stay at 800 all the time.