Bug 108337

Summary:	[CI][SHARDS] igt@* - dmesg-warn - Disabling FBC due to FIFO underrun.
Product:	DRI	Reporter:	Martin Peres <martin.peres>
Component:	DRM/Intel	Assignee:	Intel GFX Bugs mailing list <intel-gfx-bugs>
Status:	RESOLVED WORKSFORME	QA Contact:	Intel GFX Bugs mailing list <intel-gfx-bugs>
Severity:	normal
Priority:	low	CC:	intel-gfx-bugs, james.ausmus
Version:	XOrg git
Hardware:	Other
OS:	All
Whiteboard:	ReadyForDev
i915 platform:	BXT	i915 features:	display/FBC

Description Martin Peres 2018-10-12 10:28:23 UTC

https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_4970/shard-apl4/igt@kms_cursor_legacy@cursora-vs-flipa-atomic-transitions-varying-size.html

<6> [728.571118] [IGT] kms_cursor_legacy: starting subtest cursorA-vs-flipA-atomic-transitions-varying-size
<7> [728.572096] [drm:drm_mode_addfb2] [FB:116]
<7> [728.627318] [drm:drm_mode_addfb2] [FB:117]
<7> [728.642092] [drm:drm_mode_addfb2] [FB:118]
<7> [728.642468] [drm:drm_mode_addfb2] [FB:126]
<7> [728.643308] [drm:drm_mode_addfb2] [FB:138]
<7> [728.691867] [drm:i915_fifo_underrun_reset_write [i915]] Re-arming FIFO underruns on pipe A
<3> [728.724574] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun
<7> [728.725290] [drm:intel_fbc_underrun_work_fn [i915]] Disabling FBC due to FIFO underrun.
<6> [739.475176] [IGT] kms_cursor_legacy: exiting, ret=0

Comment 1 James Ausmus 2018-11-16 19:20:32 UTC

cibuglog is showing this as 0 instances in history of runs, with a 0.0% reproduction. Closing

Comment 2 Martin Peres 2018-11-16 19:40:09 UTC

CI Bug Log's reproduction rate is not accurate for low-reproductability issues.

I have plans to improve that, but until then, please click on the reproduction rate before closing. It will show you the exact instances of the issue.

Comment 3 Francesco Balestrieri 2018-12-28 09:07:58 UTC

Exactly one occurrence two and a half months ago, crickets after that. Closing.

Comment 4 Martin Peres 2019-03-08 15:07:38 UTC

Re-opening as another issue happened. There were 380 runs between them, so we need to wait until CI_DRM_9150 before closing this issue.

Dropping the priority because of the very low reproduction rate!

Comment 5 Martin Peres 2019-07-02 10:10:32 UTC

Now at CI_DRM_6394, still no reproduction. Let's wait and see!

Comment 6 Lakshmi 2019-07-31 11:48:54 UTC

Current run is CT_DRM_6590, still no new occurrences.

Comment 7 Lakshmi 2019-11-29 13:22:56 UTC

This issue occurred twice CI_DRM_4970_full (1 year, 1 month old) and IGT_4755_full (11 months old).
Closing this issue as WORKSFORME.

Comment 8 CI Bug Log 2019-11-29 13:23:01 UTC

The CI Bug Log issue associated to this bug has been archived.

New failures matching the above filters will not be associated to this bug anymore.

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