Comment 27 for bug 1348890

Arek (ak-komar) wrote :

Confirming this issue on Kubuntu 15.04 on Asus UX305.
"acpi_osi" hack doesn't fix the problem.
I am able to change brightness using xbacklight.

$ sudo dmidecode -s bios-version
UX305FA.203
$ uname -a
Linux asus 3.19.0-15-generic #15-Ubuntu SMP Thu Apr 16 23:32:37 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux