[Bug 101852] [BAT][GDG] igt at drv_hangman@error-state-basic incomplete in CI

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=101852

--- Comment #18 from Ville Syrjala <ville.syrjala at linux.intel.com> ---
(In reply to Chris Wilson from comment #17)
> Ok, set both planes to zero, no effect. In __display_resume:
> 
>         for_each_pipe(dev_priv, pipe) {
>                 struct intel_crtc *crtc =
>                         intel_get_crtc_for_pipe(dev_priv, pipe);
>                 enum plane plane = crtc->plane;
> 
>                 I915_WRITE_FW(DSPCNTR(plane), 0);
>                 I915_WRITE_FW(DSPADDR(plane), 0);
>         }

Hmm. I wonder if gen3 still needs both DPLLs and/or pipes running when moving a
plane between them. That was the case on 830, but I thought it got fixed on 855
already.

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