On Wed, 9 Feb 2011 09:53:26 -0800 Jesse Barnes jbarnes@virtuousgeek.org wrote:
On Wed, 9 Feb 2011 09:50:47 -0800 Jesse Barnes jbarnes@virtuousgeek.org wrote:
On Wed, 09 Feb 2011 17:09:10 +0000 Chris Wilson chris@chris-wilson.co.uk wrote:
On Wed, 9 Feb 2011 13:52:38 +0100, Francesco Allertsen fallertsen@gmail.com wrote:
On Wed, Feb 02, 2011 at 09:59:54AM +0000, Chris Wilson wrote:
Hmm, that was the only change I could spot between the two patches. Care to disable that function and see what happens? [i.e. put a return before we write anything to the ring]
Ping?
I was optimistic that we might spot the real issue... However, you appear to be not alone and so I've pushed a disabling patch onto -fixes:
commit ac66808814036b4c33dd98091b2176ae6157f1a8 Author: Chris Wilson chris@chris-wilson.co.uk Date: Wed Feb 9 16:15:32 2011 +0000
drm/i915: Disable RC6 on Ironlake The automatic powersaving feature is once again causing havoc, with 100% reliable hangs on boot and resume on affected machines. Reported-by: Francesco Allertsen <fallertsen@gmail.com> Reported-by: Gui Rui <chaos.proton@gmail.com> Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=28582 Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>That should work its way upstream shortly.
reverting the cleanup wasn't sufficient?
Francesco, if you revert the cleanup patch you bisected to, what does /sys/kernel/debug/dri/0/i915_drpc_info report?
In particular, I'm curious if it reports that you're in RC6, so you might need to cat it a couple of times while gfx is idle (like from the console or an ssh session while nothing is drawing).
Oh and one more request, what does "intel_reg_read 0x111b8" return on your system?
I really don't want to disable RC6; it saves way too much power. So I'd like to understand what's going on here so we can either fix your system or reliably find a way to disable it on systems where the BIOS isn't allowing it...
Thanks,