Matthew Garrett wrote:
> Radeons don't actually power down in D3 unless some registers are set,
> and even then the kernel doesn't currently have any code that would put
> the Radeon in D3. If you're willing to test something, could you try the
> code at
>
> http://www.srcf.ucam.org/~mjg59/radeon/
>
> immediately before putting the machine into suspend? Make sure that you
> do this from something other than X.
This reduces power consumption from ca. 1500 to ca. 1200 mWh, so it's
already a huge improvement, but with 1.5 days of maximal suspend still
pretty far away from a week.
Cheers,
Moritz
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