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[CI][SHARDS] igt@kms_color@pipe-[abc]-ctm-0-(25|75) - fail - Failed assertion: success

Submitted by Martin Peres @mupuf

Assigned to Uma Shankar @uma_mnnit

Link to original bug (#110920)

Description

Enabling Multi-segmented-gamma for ICL[1] regresses igt@kms_color@pipe-[abc]-ctm-0-(25|75) due to unexpected rounding.

The problem needs to be addressed on the IGT side (comparing to different acceptable rounding values) and/or by re-implementing the test on top of pipe writeback.

In the mean time, let's have this bug to document the effort.

[1] https://patchwork.freedesktop.org/series/60126/

https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_13248/shard-iclb2/igt@kms_color@pipe-b-ctm-0-25.html

Starting subtest: pipe-B-ctm-0-25
(kms_color:1190) CRITICAL: Test assertion failure function run_tests_for_pipe, file ../tests/kms_color.c:985:
(kms_color:1190) CRITICAL: Failed assertion: success

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