My Mobility Radeon HD 3450 GPU for my laptop idles around 68 C, and at peak reaches nearly 100 C. It used to run at about 55 C idle with fglrx. It does not engage thermal cutout nor switch on the fans unless the AC power is removed (running on battery).
Does anyone know how I can get it to run cooler, even at the expense of performance?
I'd really like to use radeonhd over fglrx because:
- it works with screen capture programs (read: fglrx hits 100% cpu at 2 seconds per frame trying to record the desktop, while radeonhd will easily do 20 fps),
- it is faster to boot (boot also looks prettier - fglrx switches to 800x600 and then to 1280x800 while radeonhd starts with 1280x800),
- the virtual terminals work better,
- I haven't noticed a performance drop except in the occasional game or scene and;
- the less closed source software that runs on the laptop the better.
Any help appreciated. I'm running Ubuntu 10.04 Lucid Lynx Beta 2.
Here's version info from Xorg.log:
I don't see anything in the Xorg log about power saving though. Perhaps it has to be enabled, but I'm not sure, as I can't find anything about that.
(II) Loading /usr/lib/xorg/modules/drivers/radeon_drv.so
(II) Module radeon: vendor="X.Org Foundation"
compiled for 1.7.6, module version = 6.12.192
Module class: X.Org Video Driver
ABI class: X.Org Video Driver, version 6.0