Ubuntu 14.04 Trusty Tahr now has the 3.13.0-1.16 kernel. Can you
please test this version and let us know the results?
** Changed in: linux (Ubuntu)
Status: Confirmed = Incomplete
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Good news that the code to enable this has finaly landed in Linux.
Unfortunately, I don't have access to the hardware where this bug was initially
reported against, so I cannot test this new functionality
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OK, I hope you don't mind if I mark this bug as Fix Released.
** Changed in: linux (Ubuntu)
Status: Incomplete = Fix Released
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OK - the runtime power management support I mentioned in comment #30 has
finally been enabled on ATI/AMD Radeon graphics hardware in the upstream
3.13 kernel - it has support for dynamically powering down discrete GPUs
on PowerXpress systems - see http://lists.freedesktop.org/archives/dri-
** Changed in: xserver-xorg-video-ati (Ubuntu)
Status: New = Fix Released
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https://bugs.launchpad.net/bugs/987401
Title:
Ubuntu should poweroff video
Runtime power management support (to be able to dynamically turn on/off
secondary GPUs) is coming in the upstream 3.12 kernel.
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Power management for hybrid graphics is coming in the upstream 3.8
kernel. Ubuntu 13.04 Raring Ringtail will be based on the 3.8 kernel.
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** Also affects: xserver-xorg-video-radeonhd (Ubuntu)
Importance: Undecided
Status: New
** Package changed: xserver-xorg-video-radeonhd (Ubuntu) = xserver-
xorg-video-ati (Ubuntu)
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I also mark this bug against xserver-xorg-video-ati in order to check
the status.
From what I understand, from muxless ati/intel systems there are two cases
(selected by vgaswtcheroo):
a) The rendering is done by the Intel card (default case). Intel card is on,
ATI card should be off to save
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