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-...@kernel-bugs.osdl.org
Reporter: b...@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,
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