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73416ba
(Get the code!)
I found a code for my HP DV6Z AMD fusion llano notebook
This has dual ATI GPU's in hybrid crossfire mode aka; ATI 6620 integrated graphics & 6670 discrete graphics.
echo '_SB_.PCI0.
This command reduces power consumption, don't know if it actually shuts down or suspends the DGPU
The graphics card still appears in lspci | grep VGA but power consumption is reduce to 15W on idle
These are other commands that do things, I don't know if they're power states or what
echo '_SB_.PCI0.
echo '_SB_.PCI0.
The commands ask for a parameter or dmesg reports missing parameter, don't know what parameters you could use to change things.
This command only works after my fglrx module is loaded for the proprietary ATI Catalyst driver version 11.8, If it is used before Xorg won't start and the fglrx module reports error in trying to change power state of dgpu