https://bugzilla.kernel.org/show_bug.cgi?id=213715
Bug ID: 213715 Summary: failed to change brightness of HDR panel on AMD GREEN_SARDINE through aux Product: Drivers Version: 2.5 Kernel Version: 5.14.0-rc1+ Hardware: All OS: Linux Tree: Mainline Status: NEW Severity: blocking Priority: P1 Component: Video(DRI - non Intel) Assignee: drivers_video-dri@kernel-bugs.osdl.org Reporter: mapengyu@gmail.com Regression: No
Created attachment 297819 --> https://bugzilla.kernel.org/attachment.cgi?id=297819&action=edit dmesg
HW: ThinkPad P14s gen 2a CPU: AMD Ryzen 7 PRO 5850U with Radeon Graphics Panel: BOE 2434 and CSO 5127
brightness can't be controlled through AUX. It works with parameter "amdgpu.backlight=0"
dmesg attached.