The currently under-development Ubuntu 14.04 Trusty Tahr is based on
the 3.13 kernel. You can download a pre-release version at
http://cdimage.ubuntu.com/daily-live/current/ and the final release is
scheduled for April 17th, 2014 as per
https://wiki.ubuntu.com/TrustyTahr/ReleaseSchedule
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You
The currently under-development 3.13 upstream kernel enables DPM by
default (without needing the radeon.dpm=1 boot parameter I mentioned
above) for Radeon HD 4000 through Radeon HD 7000 series graphics
processors but with some specific ASICs being excluded.
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Kernel 3.11.0-1.4 (based on the upstream 3.11-rc4 kernel) is now
available in Ubuntu 13.10 Saucy Salamander. Also, kernel 3.11.0-2.5 is
in Saucy-proposed, which is based on the upstream 3.11-rc5 kernel, which
has some bugfixes for the new DPM method.
** Changed in: linux (Ubuntu)
Status:
I've just tested the new kernel, and it seems to work well in the sense
that it keeps my laptop at around 60°C when idle. The problem is that,
even at 60°C, my laptop fan is still very noisy. Is 60°C still too hot?
Is it just a hardware problem?
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You received this bug notification because you
Julien - poor hardware design is a possibility. Also make sure you have
removed all dust from inside the computer, particulary from the CPU and
GPU fans and heatsinks (if it's a desktop, open the case, if it's a
laptop at the very least run a vacuum cleaner nozzle along the external
air vents).
According to Wikipedia and
http://xorg.freedesktop.org/wiki/RadeonFeature/#index5h2 the Mobility
Radeon HD 4225/4250 is a RV620 chip, so you shouldn't need the updated
firmware files.
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