[Bug 64178] [Intel GM45] xrandr --output <output> --mode <prev_mode> is not able to light up an output that has been disabled with xrandr --off.

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=64178

--- Comment #4 from Egbert Eich <eich at pdx.freedesktop.org> ---
Created attachment 78812
  --> https://bugs.freedesktop.org/attachment.cgi?id=78812&action=edit
Imre's patch modified.

(In reply to comment #3)
> (In reply to comment #1)
> > Imre is already working on an almost identical fix for similar issues we
> > have with igt testscases randomly failing.
> 
> Yes, it's bug #59834, the patch is attached to bug #60002. It may fix the
> first bug, but it hasn't been confirmed yet. But I think the patch fixes an
> issue anyway. I've sent it to the mailing list now.

Imre, your patch looks nicer, unfortunately it doesn't work here.

The reason is that the test is inside the "if (set->crtc->fb != set->fb)" test.
In this case the fb has not changed however thus the extra test doesn't even
run.

With the modified patch that's attached it works.

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