Hello,

I have installed SL6.1 on my new laptop (an HP Pavilion dv6t). 
Everything works well, except that the machine runs hotter with Linux 
than it does with the default Windows install (that is, the fan runs 
more often and the outer shell is warmer to the touch). The computer 
comes with two graphics cards and I think the problem is that under 
Linux, both of them are active. lspci shows:

# lspci | grep VGA
00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core 
Processor Family Integrated Graphics Controller (rev 09)
01:00.0 VGA compatible controller: ATI Technologies Inc Whistler XT [AMD 
Radeon HD 6700M Series]

There is no option in the BIOS to disable one of the GPUs. The only 
options are "Dynamic" (where the choice of GPU for an application is 
made automatically) and "Fixed" (where I manually switch between the two 
GPUs for all applications). Both of these work as advertised under 
Windows, but I cannot install the ATI Catalyst application/driver that 
does the switching in Linux (I tried their Linux version, but it doesn't 
work).

I am guessing there is no way to enable the GPU switching in Linux, but 
does anyone know of a way to at least turn off the ATI Radeon GPU?

Thank you.

-- Aram