Dell Studio 15555 really hot

[campino]

hey,

this laptop is somehow older (about 4 years) and has had heat problems before. Last time I was running ubuntu and had a number of bugs. One of them made the fan running 100% all the time. When the laptop turned off due to heat problems nevertheless, I gave it to a Dell support station. They reported thay had simply removed some dust from the fans. The other bugs made me installing fedora as soon as I got my laptop back. Fedora runs without any problems since then. This was about a year ago.

Only today the laptop turned off while I was watching a video. Logs say:

Jun 21 22:00:54 laptop kernel: [11683.336498] CPU1: Core temperature above threshold, cpu clock throttled (total events = 1)
Jun 21 22:00:54 laptop kernel: [11683.337150] CPU1: Core temperature/speed normal
Jun 21 22:01:12 laptop kernel: [11700.701038] [Hardware Error]: Machine check events logged
Jun 21 22:01:12 laptop mcelog[1277]: Kernel does not support page offline interface
Jun 21 22:01:12 laptop mcelog[1277]: Hardware event. This is not a software error.
Jun 21 22:01:12 laptop mcelog[1277]: MCE 0
Jun 21 22:01:12 laptop mcelog[1277]: CPU 1 THERMAL EVENT TSC f6be5b14c64
Jun 21 22:01:12 laptop mcelog[1277]: TIME 1340308854 Thu Jun 21 22:00:54 2012
Jun 21 22:01:12 laptop mcelog[1277]: Processor 1 heated above trip temperature. Throttling enabled.
Jun 21 22:01:12 laptop mcelog[1277]: Please check your system cooling. Performance will be impacted
Jun 21 22:01:12 laptop mcelog[1277]: STATUS 88010003 MCGSTATUS 0
Jun 21 22:01:12 laptop mcelog[1277]: MCGCAP 806 APICID 1 SOCKETID 0
Jun 21 22:01:12 laptop mcelog[1277]: CPUID Vendor Intel Family 6 Model 23
Jun 21 22:01:12 laptop mcelog[1277]: Hardware event. This is not a software error.
Jun 21 22:01:12 laptop mcelog[1277]: MCE 1
Jun 21 22:01:12 laptop mcelog[1277]: CPU 1 THERMAL EVENT TSC f6be5c6f669
Jun 21 22:01:12 laptop mcelog[1277]: TIME 1340308854 Thu Jun 21 22:00:54 2012
Jun 21 22:01:12 laptop mcelog[1277]: Processor 1 below trip temperature. Throttling disabled
Jun 21 22:01:12 laptop mcelog[1277]: STATUS 88010002 MCGSTATUS 0
Jun 21 22:01:12 laptop mcelog[1277]: MCGCAP 806 APICID 1 SOCKETID 0
Jun 21 22:01:12 laptop mcelog[1277]: CPUID Vendor Intel Family 6 Model 23

[some messages from the network manager]

Jun 21 22:07:45 laptop kernel: [12094.337053] CPU0: Core temperature above threshold, cpu clock throttled (total events = 2865)
Jun 21 22:07:45 laptop kernel: [12094.337702] CPU0: Core temperature/speed normal

[Messages from the network manager again, last one at 22:08:32. Then the laptop turned off]

This may be the same thing as one year ago, dust in my air fans. Unfortunately I can't open the laptop on my own (I know there are instructions on the dell homepage, but this does not work out for me). Do you think it may help to have it cleaned again? Or is something else broken?

Thanks in advance,
campino

[Doug G]

Since about Fedora 15 my Toshiba laptop has been running hot at times. My current suspicion is vncviewer, I recently had the machine on for a couple days doing my usual web surfing, script editing and other mostly cli work, then hooked up vncviewer to another machine and noticed about 30 min later that the cpu temp was way up.

I wouldn't be surprised if there is some buried kernel/acpi bug somewhere, or the bios on some computers has some quirks.

I don't know if any of these comments are applicable to your situation though. I'm still very much in a guessing mode, but although my machine runs normally most of the time, every now and then it gets very hot and has shut itself off a couple times.

[Agent20]

If your laptop has ATI/AMD radeon graphics and you are using the default open source drivers then post 2 in this thread might help:

http://forums.fedoraforum.org/showthread.php?t=281276

The laptop will probably have one fan to cool both the CPU and the graphics chip, so if the graphics chip is running hot then the CPU temp will increase as well.

[lightman47]

... with the laptop powered off, I blow into the exhaust port to dislodge the bulk of the dust ... just FYI

[Doug G]

Thanks for the info Agent20. My Toshiba has an AMD processor, I'll check the video. And yep, it only has one fan that i can see.