https://bugzilla.kernel.org/show_bug.cgi?id=203905
Bug ID: 203905 Summary: amdgpu:actual_brightness has unreal/wrong value Product: Drivers Version: 2.5 Kernel Version: 5.1.9 Hardware: All OS: Linux Tree: Mainline Status: NEW Severity: normal Priority: P1 Component: Video(DRI - non Intel) Assignee: drivers_video-dri@kernel-bugs.osdl.org Reporter: bjo@nord-west.org Regression: No
Radeon R5/R6/R7 Graphics in a Thinkpad A275 has wrong values on actual_brightness of amdgpu_bl0. While max_brightness is 255 and it can be set to 255, actual_brightness reports a 5 digit number like 12470. As a result, tools which want to change the brightness related to actual_brightness fail, as brightness does not accept any 5 digit number,