https://bugzilla.kernel.org/show_bug.cgi?id=107121
Bug ID: 107121 Summary: Backlight shuts off with radeon driver Product: Drivers Version: 2.5 Kernel Version: Linux-4.2.5-1-x86_64 Hardware: x86-64 OS: Linux Tree: Mainline Status: NEW Severity: normal Priority: P1 Component: Video(DRI - non Intel) Assignee: drivers_video-dri@kernel-bugs.osdl.org Reporter: solloron1@gmail.com Regression: No
Created attachment 191951 --> https://bugzilla.kernel.org/attachment.cgi?id=191951&action=edit Xorg.0.log from Lenovo T60p
After installing that version of the kernel the backlight on my machine(Lenovo T60p ATI FireGL V5250) would shut off after the bootloader(grub2). Problem was resolved by downgrading kernel to 4.2.3-1-x86_64.