Bug 42803 - bitmap2 demo in mesa_demos/src/sample hangs the GPU
Summary: bitmap2 demo in mesa_demos/src/sample hangs the GPU
Status: RESOLVED FIXED
Alias: None
Product: Mesa
Classification: Unclassified
Component: Drivers/DRI/i965 (show other bugs)
Version: git
Hardware: x86 (IA32) Linux (All)
: medium normal
Assignee: Ian Romanick
QA Contact:
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Depends on:
Blocks:
 
Reported: 2011-11-10 15:19 UTC by Anuj Phogat
Modified: 2012-05-01 17:42 UTC (History)
1 user (show)

See Also:
i915 platform:
i915 features:

Attachments
dmesg output (77.42 KB, application/octet-stream)
2011-11-10 15:19 UTC, Anuj Phogat 		Details
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Description Anuj Phogat 2011-11-10 15:19:00 UTC 
Created attachment 53386 [details]
dmesg output

I accidently found this issue while executing demos randomly from mesa demos.
Listing down my gpu information:
OpenGL renderer string: Mesa DRI Intel(R) Sandybridge Mobile x86/MMX/SSE2
OpenGL version string: 2.1 Mesa 7.12-devel (git-3996ed5)

snippet of dmesg log which shows the GPU hang.

[   26.971264] hda-intel: IRQ timing workaround is activated for card #0. Suggest a bigger bdl_pos_adj.
[   28.909122] lp: driver loaded but no devices found
[   28.917426] ppdev: user-space parallel port driver
[  204.354616] [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung
[  204.354678] [drm] capturing error event; look for more information in /debug/dri/0/i915_error_state
[  204.370471] [drm:i915_wait_request] *ERROR* i915_wait_request returns -11 (awaiting 46245 at 46240, next 46246)
[  205.808042] libsocialweb-co[1633]: segfault at 0 ip 47a823eb sp bfd49af0 error 4 in libsocialweb.so.0.0.0[47a70000+1e000]
[  528.281252] TCP lp registered

Full dmesg log is attached.
Comment 1 Kenneth Graunke 2011-11-11 13:17:42 UTC 
Reassigning to the i965 driver.  I can also reproduce this.
Comment 2 Chad Versace 2012-01-20 16:14:00 UTC 
I can reproduce this with drm-intel-fixes-8f0fc97, which I fetched on 2012-01-20. I see the same dmesg output.
Comment 3 Kenneth Graunke 2012-05-01 17:42:00 UTC 
Not sure what fixed this...possibly the LRA eviction patch in the latest kernel, or possibly some Mesa changes.  But it's working for me.

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