Re: GPU Hang in Intel Driver

[Daniel Vetter <daniel@ffwll.ch>]

On Wed, Apr 03, 2013 at 04:54:31PM -0400, Dihan Wickremasuriya wrote:
> mesa 8.0.4-r1, libdrm 2.4.43 and xf86-video-intel 2.21.5 on top of kernel
> 3.8.5 seems to work well.  No hangs or crashes so far.  Thank you very much
> for your help with this!
> 
> Would you also happen to know where I can get a patch of the i915 kernel
> fix that has been backported to version 3.2?

The kernel fix from the bug report you've cited does not apply to your
platform. For your platform I'm not sure about the support status on
vanilla 3.2 kernels, but distro's tend to backport the entire drm
directory anyway.
-Daniel

> 
> Best regards,
> Dihan
> 
> 
> On Wed, Apr 3, 2013 at 1:02 PM, Dihan Wickremasuriya <
> dwickremasuriya@rethinkrobotics.com> wrote:
> 
> > Will try mesa 8.0 or newer and report back. I had already bumped up libdrm
> > and xf86-video-intel to the latest available (2.4.43 and 2.21.5
> > respectively).
> >
> > Thanks,
> > Dihan
> >
> >
> > On Wed, Apr 3, 2013 at 12:21 PM, Daniel Vetter <daniel.vetter@ffwll.ch>wrote:
> >
> >> On Wed, Apr 3, 2013 at 5:58 PM, Dihan Wickremasuriya <
> >> dwickremasuriya@rethinkrobotics.com> wrote:
> >>
> >>> Thanks for the quick response and adding the mailing list. I did in fact
> >>> attach the error_state in my original mail. Please let me know if it's not
> >>> the one you were looking for (re-attached).
> >>>
> >>
> >> Oops, missed that one. You have a gen7 ivb machine, so the bug you've
> >> reference is _definitely_ not yours - that one's for gen2.
> >>
> >> Now looking at your error state I've noticed that your mesa is using a
> >> massively outdated version of 3DSTATE_HIER_DEPTH_BUFFER, which has been
> >> fixed with 8.0, the broken version shipped with 7.11.
> >>
> >> Please upgrade to the latest released versions of mesa, libdrm,
> >> xf86-video-intel, your bug is very likely fixed already (since 8.0 is
> >> pretty old for gen7).
> >>
> >> Yours, Daniel
> >>
> >>>
> >>> Also added a subject to the thread.
> >>>
> >>> Best regards,
> >>> Dihan
> >>>
> >>> On Wed, Apr 3, 2013 at 11:46 AM, Daniel Vetter <daniel.vetter@ffwll.ch>wrote:
> >>>
> >>>> Hi all,
> >>>>
> >>>> Two things:
> >>>> - Please _always_ include a public mailing list when reporting bugs,
> >>>> your dear maintainer sometimes slacks off.
> >>>> - We need to see the error_state before we can assess what kind of hang
> >>>> you have (it's like gettting a SIGSEGV for a normal program, no two gpu
> >>>> hangs are the same ...).
> >>>>
> >>>> Cheers, Daniel
> >>>>
> >>>> On Wed, Apr 3, 2013 at 5:42 PM, Dihan Wickremasuriya <
> >>>> dwickremasuriya@rethinkrobotics.com> wrote:
> >>>>
> >>>>> Hi Chris/Daniel,
> >>>>>
> >>>>> This is Dihan from Rethink Robotics and we were hoping you could help
> >>>>> with the GPU hang problem in the i915 driver mentioned in bug #26345:
> >>>>> https://bugs.freedesktop.org/show_bug.cgi?id=26345
> >>>>>
> >>>>> We are running into the same problem with the 3.8.5 kernel (which has
> >>>>> the fix mentioned in comment #153 of the bug report) when running a Qt 5
> >>>>> application in Gentoo. At times the entire X session would freeze. The
> >>>>> x11-perf tests described in the bug report run without any issues though.
> >>>>>
> >>>>> Would you happen to know whether this is because of an issue in the
> >>>>> driver that is not currently being addressed by the fix? I have attached
> >>>>> the Xorg log, the dmesg output and i915_error_state from a hung session.
> >>>>> Please let me know if you need any more info. Thanks in advance!
> >>>>>
> >>>>> Best regards,
> >>>>> Dihan
> >>>>>
> >>>>
> >>>>
> >>>>
> >>>> --
> >>>> Daniel Vetter
> >>>> Software Engineer, Intel Corporation
> >>>> +41 (0) 79 365 57 48 - http://blog.ffwll.ch
> >>>>
> >>>
> >>>
> >>
> >>
> >> --
> >> Daniel Vetter
> >> Software Engineer, Intel Corporation
> >> +41 (0) 79 365 57 48 - http://blog.ffwll.ch
> >>
> >
> >

-- 
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch