On Sat, 3 Oct 2009 12:50:01 -0400 Andrew Lutomirski <l...@mit.edu> wrote:
> [resend b/c the intel-gfx list doesn't allow non-member posting] > > Hi- > > First, thanks for all the great work on i915's power saving features > -- power consumption on my laptop (Lenovo X200s) is now almost as low > on Linux as on Windows. > > After a suspend/resume cycle, though, my power consumption usually > goes up by over a watt. I think this is due to i915, because of an > experiment I did: > > 1. Boot with modesetting off into single user mode. > 2. Suspend and resume > 3. Reload i915 with modesetting on. Power consumption is low. > 4. Suspend and resume. Power consumption is high. > 5. Unbind and rebind i915. Power consumption is high. > 6. Suspend. System hangs (seperate bug, I guess). > > I get similar results if I boot single user with modesetting on: power > consumption is low, becomes high after suspend/resume, and goes low > again after rebinding i915. > > This is on 2.6.32-rc1 + a little (i.e. 84d88d5d4e from Linus' tree > plus an ext4 fix). I'm having trouble reproducing any of this on > 2.6.31. I probably need to save/restore some more of the power saving state across suspend/resume... Can you file a bug for this at bugs.freedesktop.org so it doesn't get lost? Thanks, -- Jesse Barnes, Intel Open Source Technology Center ------------------------------------------------------------------------------ Come build with us! The BlackBerry® Developer Conference in SF, CA is the only developer event you need to attend this year. Jumpstart your developing skills, take BlackBerry mobile applications to market and stay ahead of the curve. Join us from November 9-12, 2009. Register now! http://p.sf.net/sfu/devconf -- _______________________________________________ Dri-devel mailing list Dri-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/dri-devel
