[Intel-gfx] frequent x crashes with gen6/sna

[Dieter Mummenschanz]

Hi Daniel,

I've installed your libva patch:

libva: libva version 0.32.0
libva: va_getDriverName() returns 0
libva: Trying to open /usr/local/lib/dri/i965_drv_video.so
libva: va_openDriver() returns 0
vainfo: VA API version: 0.32
vainfo: Driver version: Intel i965 driver - 1.0.15.pre1

No Changes. With iommu switched off there are less frequent hangs but there still are :-(. dmesg shows:

WARNING: at drivers/gpu/drm/i915/i915_drv.c:354 gen6_gt_force_wake_get+0x1f/0x3c [i915]()
Hardware name: 4236NGG
Modules linked in: snd_hda_codec_conexant fbcon font bitblit softcursor i915 thinkpad_acpi nvram drm_kms_helper drm fb fbdev cfbcopyarea video iwlagn backlight cfbimgblt cfbfillrect e1000e snd_hda_intel snd_hda_codec intel_agp intel_gtt agpgart
Pid: 0, comm: swapper Not tainted 3.1.0-rc4+ #1
Call Trace:
 <IRQ>  [<ffffffff8102fcf2>] ? warn_slowpath_common+0x78/0x8c
 [<ffffffffa0113fd9>] ? i915_vblank_swap+0x6/0x6 [i915]
 [<ffffffffa010c484>] ? gen6_gt_force_wake_get+0x1f/0x3c [i915]
 [<ffffffffa01140e2>] ? i915_hangcheck_elapsed+0x109/0x29a [i915]
 [<ffffffffa0113fd9>] ? i915_vblank_swap+0x6/0x6 [i915]
 [<ffffffff81039799>] ? run_timer_softirq+0x195/0x222
 [<ffffffff8103466f>] ? __do_softirq+0x7f/0x106
 [<ffffffff813b4f2c>] ? call_softirq+0x1c/0x30
 [<ffffffff81003396>] ? do_softirq+0x31/0x67
 [<ffffffff810348a0>] ? irq_exit+0x44/0xa5
 [<ffffffff81015cdd>] ? smp_apic_timer_interrupt+0x85/0x95
 [<ffffffff813b468b>] ? apic_timer_interrupt+0x6b/0x70
 <EOI>  [<ffffffff811d5022>] ? intel_idle+0xcd/0xe9
 [<ffffffff811d4ffe>] ? intel_idle+0xa9/0xe9
 [<ffffffff812ae307>] ? cpuidle_idle_call+0xa0/0xdb
 [<ffffffff81000840>] ? cpu_idle+0x52/0x75
 [<ffffffff81677b60>] ? start_kernel+0x401/0x40c

In this special case the gpu was successfully reset and continued normally. 

Any other ideas?

Regards
Dieter

-------- Original-Nachricht --------
> Datum: Mon, 17 Oct 2011 22:46:32 +0200
> Von: Daniel Vetter <daniel at ffwll.ch>
> An: Dieter Mummenschanz <mummenschanz at gmx.net>
> CC: Daniel Vetter <daniel at ffwll.ch>, libva at lists.freedesktop.org, intel-gfx at lists.freedesktop.org
> Betreff: Re: [Intel-gfx] frequent x crashes with gen6/sna

> On Mon, Oct 17, 2011 at 10:20:09PM +0200, Dieter Mummenschanz wrote:
> > ok now I got your patch from git and will give it a try asap. Meanwhile
> > the intel_iommu=off (with rc6 enabled) switch seems to make the system
> > somehow more stable. the gpu hangs don't appear that often but they
> > still occur! strangely after the hang/resume, the OpenGL game crashes
> > immediately with:
> > 
> > intel_do_flush_locked failed: Input/output error
> > and raises the same error when I try to start it up again.
> > 
> > mplayer also bails out with:
> > mplayer: dri2_util.c:109: dri2GetRenderingBuffer: Assertion `buffers'
> failed.
> > MPlayer interrupted by signal 6 in module: flip_page
> > 
> > I have to reboot in order to get mplayer / the game running.
> > 
> > I've never experienced that before. i915 error state attached.
> 
> Well, that usually means that the kernel couldn't reset the gpu after a
> hang. You should see a message to that effect in dmesg.
> -Daniel
> -- 
> Daniel Vetter
> Mail: daniel at ffwll.ch
> Mobile: +41 (0)79 365 57 48

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