[Bug 83816] backlight maxed out when switching from X to a tty

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=83816

--- Comment #7 from Chris Wilson <chris at chris-wilson.co.uk> ---
After 32.8s (which is when X starts its VT switch), in the kernel we see the
backlight set to 0 (for the modeswitch), then set to 100 (which I presume is
the actual_level being restored), then the kernel sets it to max on the
installation of the fbcon and intel_panel_enable_backlight().

The bug is that intel_panel_enable_backlight() always sets the max value
ignoring the current user value.

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