Bug 103020

Summary: [BAT] *ERROR* Atomic update failure on pipe B
Product: DRI Reporter: Jani Saarinen <jani.saarinen>
Component: DRM/IntelAssignee: Intel GFX Bugs mailing list <intel-gfx-bugs>
Status: CLOSED DUPLICATE QA Contact: Intel GFX Bugs mailing list <intel-gfx-bugs>
Severity: normal    
Priority: medium CC: intel-gfx-bugs
Version: DRI git   
Hardware: Other   
OS: All   
Whiteboard: ReadyForDev
i915 platform: BXT i915 features: display/atomic

Description Jani Saarinen 2017-09-28 08:13:40 UTC 
On CI running igt@kms_busy@basic-flip-b caused Atomic update failure on pipe B.
Some connection to bug seen previously (102403) but will make own now to not re-open whole issue again. 

https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_3146/fi-bxt-dsi/igt@kms_busy@basic-flip-b.html


Out	
IGT-Version: 1.19-g2885b10f (x86_64) (Linux: 4.14.0-rc2-CI-CI_DRM_3146+ x86_64)
Subtest basic-flip-B: SUCCESS (0.911s)
Test requirement not met in function __real_main311, file kms_busy.c:337:
Test requirement: !(n >= display.n_pipes)
Environment	
PIGLIT_SOURCE_DIR="/opt/igt/piglit" PIGLIT_PLATFORM="mixed_glx_egl"

Command	
/opt/igt/libexec/intel-gpu-tools/kms_busy --run-subtest basic-flip-B

Dmesg	
[  335.676578] Setting dangerous option reset - tainting kernel
[  336.201819] [drm:intel_pipe_update_end [i915]] *ERROR* Atomic update failure on pipe B (start=23 end=24) time 104 us, min 1192, max 1199, scanline start 1191, end 1202
[  336.588555] Setting dangerous option reset - tainting kernel
Comment 1 Vidya Srinivas 2017-10-05 09:44:45 UTC 
We tried to reproduce this issue on the latest drm tip (top of tree).
Details below:

top commit
commit 247cb84af034b8e90ecd22cd69adb13a7a305350
Author: Jani Nikula <jani.nikula@intel.com>
Date:   Thu Oct 5 09:44:50 2017 +0300

    drm-tip: 2017y-10m-05d-06h-44m-09s UTC integration manifest

uname -a:
Linux intel-desktop 4.14.0-rc3+ #1 SMP Thu Oct 5 14:07:27 IST 2017 x86_64 x86_64 x86_64 GNU/Linux

We executed the test kms_busy (mentioned in the bug) for around 25 iterations and we were not able to reproduce the issue.

Can someone please reconfirm if this issue exists on the top of tree?
Comment 2 Marta Löfstedt 2017-10-10 13:19:06 UTC 

*** This bug has been marked as a duplicate of bug 102403 ***

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