[Kernel-packages] [Bug 1452173] Re: [Dell Precision M4800] Regression: screen brightness control broken in 15.04

Marius B. Kotsbak, thank you for reporting this and helping make Ubuntu better. As per http://www.dell.com/support/home/us/en/19/product- support/product/precision-m4800-workstation/drivers an update to your computer's buggy and outdated BIOS is available (A13). If you update to this following

[Kernel-packages] [Bug 1452173] Re: [Dell Precision M4800] Regression: screen brightness control broken in 15.04

** Changed in: linux (Ubuntu) Importance: Undecided = High ** Changed in: nvidia-graphics-drivers-346-updates (Ubuntu) Status: New = Confirmed ** Changed in: nvidia-graphics-drivers-346-updates (Ubuntu) Importance: Undecided = High ** Changed in: xorg (Ubuntu) Status: New =