Additional info: the screen needs to be turned on again after lid closure or screensaver timeout.
It seems to be achieved by creating a file called /etc/acpi/local/lid.sh.post with the following contents ------------------------------- #!/bin/sh # To fix video-intel backlight off on start bug setpci -s 00:02.0 F4.B=00 ------------------------------- and chmod +x /etc/acpi/local/lid.sh.post Alan