[systemd-bugs] [Bug 66367] Provide handle for ACPI to change backlight brightness, similiar to other power-related ACPI events

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=66367

--- Comment #4 from Peter Weber <peter.weber at ttyhoney.com> ---
Thanks for your response. I thought about HandleLitSwitch or HandleSuspendKey
more in a way of basic integration of power-management, instead of a
integration into the system-lifecycle. But it's obvious for me now and makes
sense! You're right with this.

Well. Handling the brightness in Systemd looked like an straight solution, till
now. The problem with gnome-settings-daemon is, that it requires a
desktop-environment at all with the complete stoftware stack from DBUS to
X11/Wayland. The changes to the kernel breaks "brigthness-keys" for users of
plain TTYs and non-desktop-environements. Also gnome-settings-daemon ignores
the events from the keys, if the users operates currently on a TTY and not in
GNOME.

Maybe writing and shell-script (with an alias for it) which modifies the
content in the responsible files in /sys/... to change the brigthness would be
a sufficient solution for me.

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