Linus Torvalds wrote:
[ Digression from testing Alexey's patch that makes the Evo work again
with two separate threads ]
On Mon, 20 Nov 2006, Linus Torvalds wrote:
Ok, this one works for me too, and looks much simpler.
Hmm. Some more testing shows that fan behaviour after a suspend-to-ram
event seems broken, but I suspect the breakage isn't new.
It seems that ACPI remembers fan state from before the suspend, and then
(incorrectly) uses that to decide whether it should turn fans on or off.
So for example, it seems to remember that the fan was already on, so it
won't ever turn it on again - even though the suspend will obviously have
turned off all fans too.
We have patches in #7122 for similar issue in suspend-to-disk, it may
fix suspend-to-ram too?
It's related to order of ACPI devices resume and _WAK method execution.
Thanks,
Alex.
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