Comment 92 for bug 1510344

Roland Lohner (loczaj) wrote :

On Dell E5570,

gdbus call --system --dest org.freedesktop.UPower --object-path /org/freedesktop/UPower/KbdBacklight --method org.freedesktop.UPower.KbdBacklight.GetBrightness

works well, returns 0, 1, or 2, depending on keyboard backlight level OFF, DIM, FULL.

But gdbus call --system --dest org.freedesktop.UPower --object-path /org/freedesktop/UPower/KbdBacklight --method org.freedesktop.UPower.KbdBacklight.SetBrightness i

switches backlight to full power independently of parameter i. Even backlight timeout is deactivated: backlight just does not switch off.

This deactivated timeout "setting" made by Ubuntu is persisted. Even if I reboot into DOS or BIOS setup, backlight just stays on. I have to setup the timeout vale in BIOS again to activate the timeout function.

Ubuntu 16.04 with unity-settings-daemon version 15.04.1+16.04.20160209-0ubuntu2.