Public bug reported:
As the title says, on this laptop the brightness controls are NOT saved
after reboot.
What is saved instead, is only the keyboard brightness.
I have tested two distros, Ubuntu 18.04.2 LTS and 19.04, happens on both
systems. But there is a difference
On 19.04, "systemctl status systemd-backlight@:*intel_screen_backlight_*" shows:
"Saved brightness 20 too low, increasing to 75"
On 18.04.2 does not show anything rather than the service starting
normally
The laptop is a Dell XPS 15 9550, the screen backlight driver is the
intel one.
** Affects: systemd (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1833532
Title:
systemd-backlight does not restore screen brightness after reboot
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