[Bug 83021] Brightness is automatically set to zero when switching from X session to tty

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=83021

--- Comment #1 from Gabriele Mazzotta <gabriele.mzt at gmail.com> ---
The problem seems to be that when the panel is disabled, the actual brightness
is set to 0, but right after that is set to backlight.min along with
backlight.level, probably because of intel_backlight_device_update_status().

When the panel is enabled, backlight.level is compared against 0 in
intel_panel_enable_backlight(), so the actual brightness is not changed since
the current level is not 0, but backlight.min.

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