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[ubuntu] High CPU temperature

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linux-howto

http://ubuntuforums.org – ACPI CPU temperature on my Acer Extensa 5630 is 75C when system idle (65/50 on cores) in Ubuntu 9.10. In Debian I have 45/40C and in Windows XP it is also normal. CPU fan works on high speed every time. CPU freq controller is running, 99% CPU is free and lm-sensors work correctly. I have the same problem in Fedora 11. What could you advice me? (Hardware)