[Bug 73431] [snb] GPU hang in blorp HiZ resolve for google maps

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=73431

Chad Versace <chad.versace at linux.intel.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |ASSIGNED
            Version|unspecified                 |git

--- Comment #6 from Chad Versace <chad.versace at linux.intel.com> ---
>From your latest error dump:

render command stream:
  HEAD: 0x00e1bbe0
    head = 0x0001bbe0, wraps = 7
  TAIL: 0x0001c780
  CTL: 0x0001f001
  ACTHD: 0x05980c38
  IPEIR: 0x00000000
  IPEHR: 0x7a000002
  INSTDONE: 0xfffffffb
    busy: HIZ

Even on Mesa master-9036887, the hang is still HiZ's fault :(

Hangs are always difficult to diagnose, so I apologize beforehand for how much
turnaround it may take to solve this.

I have some actions and questions for you:

  - Is your Mesa build unpatched? Or does it include patches from the RPM? This
is critical, because some Fedora Mesa SRPMS contain already contain a HiZ
workaround patch that may intefere with upstream. If your RPM contains patches,
please provide the full SRPM. (I can pull from
git://pkgs.fedoraproject.org/mesa if that makes it easier).

  - Which version of xf86-video-intel? Can you point to a SRPM?

  - Please try to reproduce with Mesa master-6a5c86f. The commit immediately
after that removes a "redundant" HiZ workaround. Maybe it wasn't redundant
after all.

  - If you can still reproduce with Mesa master-6a5c86f, then please also try
with tag mesa-10.0.2.

  - What is the mean time to failure after a reboot?

  - How exactly are you reproducing the hang? By zooming and out on New York
City for 4 hours? By rotating the earth left continuously for 30 minutes near
the equator?

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