LoL, My brightness works as intended. I am on Ubuntu 13.04 64bit Kernel 3.8.0-27-generic
It didn't work when I installed Ubuntu in BIOS mode (since XPS 13 ships with Motherboard that is UEFI), when I switched to UEFI mode and reinstalled my OS, brightness issue was fixed. I can lower it down and up using function keys or by adjusting settings.
LoL, My brightness works as intended. I am on Ubuntu 13.04 64bit Kernel 3.8.0-27-generic
It didn't work when I installed Ubuntu in BIOS mode (since XPS 13 ships with Motherboard that is UEFI), when I switched to UEFI mode and reinstalled my OS, brightness issue was fixed. I can lower it down and up using function keys or by adjusting settings.