On Tue, 2012-07-31 at 16:09 +0100, James Bottomley wrote: > On Tue, 2012-07-31 at 07:27 -0700, Keith Packard wrote: > > James Bottomley <James.Bottomley@xxxxxxxxxxxxxxxxxxxxx> writes: > > > > > on 3.5 killing X causes idle power to go 14W -> 5.9W > > > on 3.4.6 killing X causes idle power to go 6.8W -> 5.7W > > > > That's actually pretty good news -- you're just not getting to RC6 > > when X is running, but RC6 is otherwise working. And, yes, the GPU > > really can suck that much power. The debug info that Chris pointed you > > at should tell a more complete story. For comparison, on my sandybridge > > box this morning: > > Well, I don't know what it means, but I have a culprit from bisect (I > managed to manually verify the bisection heads which would step back > into 3.3). > > 2911a35b2e4eb87ec48d03aeb11f019e51ae3c0d is the first bad commit > commit 2911a35b2e4eb87ec48d03aeb11f019e51ae3c0d > Author: Ben Widawsky <ben@xxxxxxxxxxxx> > Date: Thu Apr 5 14:47:36 2012 -0700 > > drm/i915: use semaphores for the display plane > > I'm going to try building 3.5 with this reverted (it doesn't revert > cleanly). OK, I confirm that reverting this patch in 3.5 recovers a ~6.5W idle power. James _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/dri-devel
