[Bug 36438] ATI card fan is always on with opensource radeon driver

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Sun Jan 29 07:48:51 PST 2012


--- Comment #18 from Alex Deucher <agd5f at yahoo.com> 2012-01-29 07:48:51 PST ---
(In reply to comment #17)
> (In reply to comment #6)
> > See the "KMS Power Management Options" section of this page:
> > http://wiki.x.org/wiki/RadeonFeature
> As written in https://bugs.freedesktop.org/show_bug.cgi?id=41762,
> I have "Mobility Radeon HD3650", and as I understand it is based on R600
> chipset.
> The feature matrix on the RadeonFeature wiki page says all the power
> saving/management features are implemented for this card.
> But power saving doesn't seem to work. The laptop overheats and shuts down
> before I even get to the LiveCD desktop/shell to be able to switch to the
> power_profile "low".
> Do you know if this is an error on the wiki page, or a bug in the radeon
> driver?

This problem seems to be specific to your system.  Please make sure the heat
sinks and fans are clear of dust and and that the acpi thermal zones for your
system are working properly.

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