[git pull] drm for rc1
jbarnes at virtuousgeek.org
Tue Jan 11 11:45:05 PST 2011
On Tue, 11 Jan 2011 11:25:39 -0800
Linus Torvalds <torvalds at linux-foundation.org> wrote:
> On Tue, Jan 11, 2011 at 11:12 AM, Jesse Barnes <jbarnes at virtuousgeek.org> wrote:
> > Have you tried reproducing it using xset dpms force off or similar?
> That doesn't seem to do anything bad.
> In fact, I think the second time it happened the screen never went
> black - just the random photo thing was on. But no, forcing the screen
> saver on doesn't do it either (ie pressing the "lock screen" icon and
> waiting for a few pictures to cycle).
> Maybe the screen just has to be inactive for a longer time: do you do
> some dynamic "let's power things down if nothing is changing"?
There are some timeouts, the FBC engine will recompress about once
every 15s; the self-refresh timers are much smaller though so it should
be active anytime the CPU enters a deep sleep state. The clock
frequency changes in millisecond time too, you can check the status of
that in /sys/kernel/debug/dri/0/i915_drpc_status and i915_cur_delayinfo.
I wonder if re-enabling rc6 may have caused your issues? That would be:
Author: Jesse Barnes <jbarnes at virtuousgeek.org>
Date: Wed Jan 5 12:01:24 2011 -0800
drm/i915: re-enable rc6 support for Ironlake+
Jesse Barnes, Intel Open Source Technology Center
More information about the dri-devel