Bug 107751

Summary: [CI][DRMTIP] all tests - dmesg-warn - CPU pipe [ABC] FIFO underrun
Product: DRI Reporter: Martin Peres <martin.peres>
Component: DRM/IntelAssignee: Intel GFX Bugs mailing list <intel-gfx-bugs>
Status: NEW --- QA Contact: Intel GFX Bugs mailing list <intel-gfx-bugs>
Severity: normal    
Priority: medium CC: intel-gfx-bugs
Version: XOrg git   
Hardware: Other   
OS: All   
Whiteboard: ReadyForDev
i915 platform: BYT i915 features: display/Other
Bug Depends on:    
Bug Blocks: 105980    

Description Martin Peres 2018-08-30 12:21:53 UTC
https://intel-gfx-ci.01.org/tree/drm-tip/drmtip_85/fi-byt-n2820/igt@kms_rotation_crc@sprite-rotation-180.html

[  111.513087] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe B FIFO underrun
Comment 1 harish.chegondi 2019-11-14 20:20:45 UTC
Until 5 months ago, this failure used to happen few times every month. In the last 4 months, there was only one failure. All these test failures happened on BYT platform. There are several other bugs with "FIFO underrun" dmesg warnings.

This test tests plane rotation with plane type "Overlay" and rotation of 180 degrees.

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