[Bug 58769] GDM can't show and screen freeze after run screen saver and turn off backlight command on Haswell chipset

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=58769

--- Comment #3 from Chris Wilson <chris at chris-wilson.co.uk> ---
Can you please test whether disabling the ACPI backlight ala
https://patchwork.kernel.org/patch/2697681/ fixes the issue?

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