[Bug 73156] Dual onboard LCD (eDP1 and DP1) cannot turn on DP1 (no backlight), no backlight control but can see screen in reflected light

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=73156

--- Comment #23 from Jani Nikula <jani.nikula at intel.com> ---
(In reply to comment #22)
> git clone http://cgit.freedesktop.org/drm-intel drm-intel-nightly
> 
> ls /sys/class/backlight/
> acpi_video0  intel_backlight

So what does changing those do?

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