[Intel-gfx] ✗ Fi.CI.IGT: failure for drm/i915: Per-crtc/connector DRRS debugfs (rev2)

[Ville Syrjälä]

On Sat, Oct 01, 2022 at 11:23:17PM -0000, Patchwork wrote:
>   * igt at gem_exec_balancer@parallel-balancer:
>     - shard-iclb:         [PASS][58] -> [SKIP][59] ([i915#4525])
>    [58]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_12204/shard-iclb2/igt@gem_exec_balancer@parallel-balancer.html
>    [59]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_109175v2/shard-iclb5/igt@gem_exec_balancer@parallel-balancer.html

shard-iclb skips most DRRS tests, but does execute a few which is
weird.

I spot checked a few of he logs and saw at least three different panels
being used:
1. using preferred EDID fixed mode: "2560x1440": 60 241750 2560 2608 2640 2720 1440 1443 1448 1481 0x48 0xa
2. using preferred EDID fixed mode: "1920x1080": 60 141000 1920 1936 1952 2104 1080 1083 1097 1116 0x48 0xa
3. using preferred EDID fixed mode: "1920x1080": 60 138780 1920 1966 1996 2080 1080 1082 1086 1112 0x48 0xa
   using alternate EDID fixed mode: "1920x1080": 40 92520 1920 1966 1996 2080 1080 1082 1086 1112 0x40 0xa

So the DRRS tests were only executed when they ended up on machine with 
panel 3.

Having different panels between the machines in the shard pool is not
great. We can get all kinds of pingpongs depending on how tests get
scheduled to individual machines.

-- 
Ville Syrjälä
Intel