Comment 59 for bug 1348890

Reproducible on ASUS UX501JW

$ uname -a
Linux ASUS-ZENBOOK 4.2.0-16-generic #19-Ubuntu SMP Thu Oct 8 15:35:06 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux

$ sudo dmidecode -s bios-version && sudo dmidecode -s bios-release-date
N501JW.210
08/03/2015

The "acpi_osi=" work around works it still ignores display turn off combination.