This issue has been going on for a long time on SNB_shards:
IGT-Version: 1.20-g9ba736ae (x86_64) (Linux: 4.14.0-rc5-CI-CI_DRM_3270+ x86_64)
Primary screen: VGA 1024x768, crtc 0
FBC last action not supported
Can't test PSR: no usable eDP screen.
Sink CRC not supported: primary screen is not eDP
Test requirement not met in function do_status_assertions, file kms_frontbuffer_tracking.c:1708:
Test requirement: !fbc_not_enough_stolen()
Subtest fbc-1p-primscrn-shrfb-msflip-blt: SKIP (0.639s)
This need to be fixed before we can release SNB to pre-merge.
It looks like this is a regression that started on CI_DRM_3265.
I.e. there is a long sequence where all these test was skipped before CI_DRM_3265.
Reference to Ville's patches https://patchwork.freedesktop.org/series/33060/
That re now merged.
Patch-set integrated to CI_DRM_3351.
The issue appear to be gone!