This workaround worked for me on a Dell Latitude E7450 Ubuntu 16.04 kernel 4.6 RC 4
In the file:
/etc/dbus-1/system.d/org.freedesktop.UPower.conf
change:
<allow send_destination="org.freedesktop.UPower" send_interface="org.freedesktop.UPower.KbdBacklight"/>
to:
<deny send_destination="org.freedesktop.UPower" send_interface="org.freedesktop.UPower.KbdBacklight"/>
This workaround worked for me on a Dell Latitude E7450 Ubuntu 16.04 kernel 4.6 RC 4
In the file: 1/system. d/org.freedeskt op.UPower. conf n="org. freedesktop. UPower"
send_ interface= "org.freedeskto p.UPower. KbdBacklight" /> n="org. freedesktop. UPower"
send_ interface= "org.freedeskto p.UPower. KbdBacklight" />
/etc/dbus-
change:
<allow send_destinatio
to:
<deny send_destinatio
and reboot. /askubuntu. com/questions/ 700069/ keyboard- backlight- turns-on- after-lock- screen- display- on
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