* Pageflip failure on SNB devices running 3.13.3
@ 2014-02-25 14:52 Simon Farnsworth
2014-02-25 16:52 ` Chris Wilson
0 siblings, 1 reply; 3+ messages in thread
From: Simon Farnsworth @ 2014-02-25 14:52 UTC (permalink / raw)
To: intel-gfx
Hello,
I'm seeing pageflips give up on me on SNB hardware - Celeron 847, i5-2400S -
where the CRTC becomes unexpectedly busy and never recovers.
When I'm failed, I can see interrupts coming in (Interrupts received in
/sys/kernel/debug/dri/0/i915_gem_interrupt increments), but the queued flip
never happens:
# cat /sys/kernel/debug/dri/0/i915_gem_pageflip
Flip queued on pipe A (plane A)
Stall check enabled, 1 prepares
Old framebuffer gtt_offset 0x01354000
New framebuffer gtt_offset 0x0093c000
No flip due on pipe B (plane B)
# cat /sys/kernel/debug/dri/0/i915_gem_interrupt
North Display Interrupt enable: 8eb48585
North Display Interrupt identity: 00000000
North Display Interrupt mask: 734bfa7a
South Display Interrupt enable: ffffffff
South Display Interrupt identity: 00000000
South Display Interrupt mask: f114ffff
Graphics Interrupt enable: 00401001
Graphics Interrupt identity: 00000000
Graphics Interrupt mask: ffffffff
Interrupts received: 1006958
Graphics Interrupt mask (render ring): ffffffff
Current sequence (render ring): 1472838
Graphics Interrupt mask (bsd ring): ffffffff
Current sequence (bsd ring): 1271460
Graphics Interrupt mask (blitter ring): ffffffff
Current sequence (blitter ring): 1472839
I'm running packages from Fedora 20:
# rpm -q mesa-libGL kernel xorg-x11-server-Xorg xorg-x11-drv-intel libva-
intel-driver libdrm
mesa-libGL-9.2.5-1.20131220.fc20.x86_64
kernel-3.13.3-201.fc20.x86_64
xorg-x11-server-Xorg-1.14.4-90.fc20.x86_64
xorg-x11-drv-intel-2.21.15-5.fc20.x86_64
libva-intel-driver-1.2.1-1.fc20.x86_64
libdrm-2.4.50-1.fc20.x86_64
I've put a dmesg from a failed system at http://90.155.96.198/sfarnsworth/flip-fail.txt - it's 11.3MB, so can't be attached. I've spotted the MCH_SSKPD
message, but I also get the failures on systems that don't output that
message.
Any ideas? Or should I file a bug?
--
Simon Farnsworth
Software Engineer
ONELAN Ltd
http://www.onelan.com
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Pageflip failure on SNB devices running 3.13.3
2014-02-25 14:52 Pageflip failure on SNB devices running 3.13.3 Simon Farnsworth
@ 2014-02-25 16:52 ` Chris Wilson
2014-02-25 17:13 ` Simon Farnsworth
0 siblings, 1 reply; 3+ messages in thread
From: Chris Wilson @ 2014-02-25 16:52 UTC (permalink / raw)
To: Simon Farnsworth; +Cc: intel-gfx
On Tue, Feb 25, 2014 at 02:52:00PM +0000, Simon Farnsworth wrote:
> I've put a dmesg from a failed system at http://90.155.96.198/sfarnsworth/flip-fail.txt - it's 11.3MB, so can't be attached. I've spotted the MCH_SSKPD
> message, but I also get the failures on systems that don't output that
> message.
>
> Any ideas? Or should I file a bug?
Let's capture as much as possible in a bug. Can you try the stall
detection w/a (if it is not already enabled)?
-Chris
--
Chris Wilson, Intel Open Source Technology Centre
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Pageflip failure on SNB devices running 3.13.3
2014-02-25 16:52 ` Chris Wilson
@ 2014-02-25 17:13 ` Simon Farnsworth
0 siblings, 0 replies; 3+ messages in thread
From: Simon Farnsworth @ 2014-02-25 17:13 UTC (permalink / raw)
To: Chris Wilson; +Cc: intel-gfx
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On Tuesday 25 February 2014 16:52:59 Chris Wilson wrote:
> On Tue, Feb 25, 2014 at 02:52:00PM +0000, Simon Farnsworth wrote:
> > I've put a dmesg from a failed system at http://90.155.96.198/sfarnsworth/flip-fail.txt - it's 11.3MB, so can't be attached. I've spotted the MCH_SSKPD
> > message, but I also get the failures on systems that don't output that
> > message.
> >
> > Any ideas? Or should I file a bug?
>
> Let's capture as much as possible in a bug. Can you try the stall
> detection w/a (if it is not already enabled)?
> -Chris
>
Filed as https://bugs.freedesktop.org/show_bug.cgi?id=75502
I'm not sure what you mean by "stall detection w/a"; I've not deliberately
disabled anything, so it should be in its default state. We can follow
through on the bug if there's something I need to turn on, though.
--
Simon Farnsworth
Software Engineer
ONELAN Ltd
http://www.onelan.com
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^ permalink raw reply [flat|nested] 3+ messages in thread
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2014-02-25 14:52 Pageflip failure on SNB devices running 3.13.3 Simon Farnsworth
2014-02-25 16:52 ` Chris Wilson
2014-02-25 17:13 ` Simon Farnsworth
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