[Bug 29842] Radeon runs very hot

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=29842





--- Comment #17 from Igor Rudchenko <igor at starrain.org>  2012-03-19 16:35:11 ---
To Matthew Garrett:

I agree about network cards, but current situation with video card worries me
much. Prior 3.0.20, 3.2.5 and 3.3 kernels, users of ThinkPads T60 can simply
add key "pcie_aspm=force" to kernel and get ASPM working for their radeon card.
But after your last patch to ASPM code we can't get ASPM working simply by keys
or sysfs. "pcie_aspm=force" does nothing, but the ability to change policy. But
changing policy also does nothing! I tried to change to powersave and then
watch into registers - I got the same 0x40 values. So now direct change
registers with setpci is our only choice to get ASPM working. And so it should
not be.

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