Bug 107626 - [SNB] The graphical corruption and GPU hang occur sometimes on the piglit test "arb_texture_multisample-large-float-texture" with parameter --fp16
Summary: [SNB] The graphical corruption and GPU hang occur sometimes on the piglit tes...
Alias: None
Product: Mesa
Classification: Unclassified
Component: Drivers/DRI/i965 (show other bugs)
Version: 18.2
Hardware: Other All
: medium normal
Assignee: Intel 3D Bugs Mailing List
QA Contact: Intel 3D Bugs Mailing List
Depends on:
Reported: 2018-08-20 14:28 UTC by asimiklit
Modified: 2018-11-09 08:46 UTC (History)
1 user (show)

See Also:
i915 platform:
i915 features:

The graphical corruption example 1 (4.32 MB, image/jpeg)
2018-08-20 14:28 UTC, asimiklit
log with options INTEL_DEBUG=bat,buf (248.85 KB, text/plain)
2018-08-20 15:19 UTC, asimiklit

Description asimiklit 2018-08-20 14:28:15 UTC
Created attachment 141199 [details]
The graphical corruption example 1

The root cause of the bug is found and solution will be shortly.
Comment 1 asimiklit 2018-08-20 15:19:28 UTC
Created attachment 141200 [details]
log with options INTEL_DEBUG=bat,buf

Pay attention that the last batch of log has an aperture with negative value "(-1023.8Mb aperture)" and this last batch does not have STATE_BASE_ADDRESS command.

The solution is suggested:
Comment 2 asimiklit 2018-11-09 08:46:28 UTC
This issue was fixed by patch (2/2):
Commit: https://cgit.freedesktop.org/mesa/mesa/commit/?id=e4e0fd5ffe1de9078ac8906155e1a80ca2006994

The another patch 1/2 from this series was reverted due to regression:
Commit: https://cgit.freedesktop.org/mesa/mesa/commit/?id=5f312e95f8775e050ef9f8218be0eed6da1ee21d
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=108630

But anyway the patch 2/2, which was successfully accepted, fixed this bug.

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