Bug 62209 - [IVB/HSW]Ogles30/transform_feedback_misc.test randomly fail
Summary: [IVB/HSW]Ogles30/transform_feedback_misc.test randomly fail
Alias: None
Product: Mesa
Classification: Unclassified
Component: Drivers/DRI/i965 (show other bugs)
Version: unspecified
Hardware: All Linux (All)
: high major
Assignee: Ian Romanick
QA Contact:
Depends on:
Blocks: 67224
  Show dependency treegraph
Reported: 2013-03-12 08:11 UTC by meng
Modified: 2014-08-01 05:51 UTC (History)
1 user (show)

See Also:
i915 platform:
i915 features:

transform_feedback_misc.test.log (9.03 KB, text/plain)
2013-03-12 08:11 UTC, meng
Xorg.0.log (72.41 KB, text/plain)
2013-03-12 08:11 UTC, meng
sync_functionality_clientwaitsync_flush.test output (9.87 KB, text/plain)
2013-08-07 07:50 UTC, lu hua

Description meng 2013-03-12 08:11:23 UTC
Created attachment 76367 [details]

System Environment:
Platform: IVB/HSW
Libdrm:	 (master)libdrm-2.4.42-6-gbbf6e3dea3c79ea8e0c3e1dd8f80014201e003fc
Mesa:	 (master)b21a9d46e4be0c666327569f07b9cddeb4d42d38
Xserver: (master)xorg-server-1.14.0-1-g5047810a4c20fab444b8c6eb146c55dcdb0d4219
Cairo:	(master)5ee136b2c067c92e85f04ba0c84966f7760f4556
Kernel:	(drm-intel-nightly) 799c9b8dff5dc437f9a137c007ee2e1ecbb5e205

Bug detailed description:
Ogles30/transform_feedback_misc.test fail with gnome-session enable compositing. The case is unsteadily and could repoduce by 5 times. 
It works well with gome-session with “fallback” mode(System tools/system settings/system info/Graphic), also well without window manager. Please see failure log and Xorg.0.log attached. 

Other failure cases:

Reproduce steps:
2.gnome-session enable compositing
3. ./GTF -width=64 -height=64 
Comment 1 meng 2013-03-12 08:11:51 UTC
Created attachment 76369 [details]
Comment 2 Gordon Jin 2013-04-01 05:55:02 UTC
Ian, can you reproduce?
Comment 3 Kenneth Graunke 2013-05-13 06:08:51 UTC
I would guess that the culprit is "i965: Actually use the user timeout in glClientWaitSync." but that's more recent than the sha meng tested.  So I guess it must not be that (though I haven't tried to reproduce it yet).
Comment 4 Gordon Jin 2013-06-09 08:04:42 UTC
These are the only ogles3conform failures on HSW. Can we take this as high priority?
Comment 5 Ian Romanick 2013-08-06 23:51:58 UTC
I don't know that we've been able to reproduce this.  Perhaps it only occurs on some HSW variants?
Comment 6 lu hua 2013-08-07 07:48:52 UTC
It also happens with raw X now.
GL3Tests/sync/sync_functionality_clientwaitsync_flush.test unstable is easier to reproduce.
./GTF -width=64 -height=64 -run=GL3Tests/sync/sync_functionality_clientwaitsync_flush.test
Comment 7 lu hua 2013-08-07 07:50:39 UTC
Created attachment 83759 [details]
sync_functionality_clientwaitsync_flush.test output
Comment 8 Ian Romanick 2013-08-07 16:19:26 UTC
The failures with sync_functionality_clientwaitsync_flush.test are a known issue with the test itself.  The problem is the test schedules too little work for the GPU to do before checking that the sync has not been signaled.  At 64x64, a fast GPU always gets done before it can check. 

We don't care about those failures.  Let's keep this bug about the transform_feedback_misc.test issue.
Comment 9 Anuj Phogat 2013-08-17 01:00:11 UTC
Reproduced the failure on my Ivybridge laptop. Test passes most of the times when run with -minfmt option. Even though symptoms of this bug and bug#67934 look similar, bisected commit(a3f48d9) in 67934 doesn't effect the output of this test in any way.
Comment 10 Eric Anholt 2013-11-28 05:11:44 UTC
I noticed one transform feedback related workaround we weren't explicitly implementing, but it didn't help.  It's on misc-workarounds of my tree.
Comment 11 meng 2014-08-01 05:19:19 UTC
In the updated gles3 conformance tests, the issue can not be reproduced.
Comment 12 meng 2014-08-01 05:50:54 UTC
The issue is also fixed in old gles3 version, so closed it.

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