Sunday, December 4, 2011

Laptop overheat in Fedora 16

After installing Fedora 16 on my laptop(or any RH flavors) i noticed a huge temperature difference when running Windows 7 vs Fedora/RH. Definitely, my laptop temperature is high even in idle.

Followed a workaround as discussed in Bugzilla 702953 by setting the GPU power to mid instead of using the max power
[root@fedora ~]# acpi -t
Thermal 0: ok, 78.0 degrees C

Now set the GPU power to mid
[root@fedora ~]# echo mid > /sys/class/drm/card0/device/power_profile

Temperature goes down instantly
[root@fedora ~]# echo `date` && acpi -t
Sun Dec 4 06:18:35 SGT 2011
Thermal 0: ok, 71.0 degrees C
[root@fedora ~]# echo `date` && acpi -t
Sun Dec 4 06:30:05 SGT 2011
Thermal 0: ok, 68.0 degrees C

One alternative way of monitoring temperature is by the use of lm_sensors
[root@fedora ~]# sensors
Adapter: Virtual device
temp1: +83.0°C (crit = +103.0°C)

Adapter: PCI adapter
temp1: +84.0°C

Im running ATI Radeon HD5730 video card

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