[Bug 89055] [SKL ] WARN_ON(!wm_changed) hit in the WM code with multiple pipes enabled

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=89055

--- Comment #21 from d.dan at byom.de ---
It is reproducible as it only occurs with a hdmi connected monitor, without
there are no error messages/warnings.

Also X server is (sometimes) unable to start because of this

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