This is a quirk we currently manually apply via our installer, but we don't have this exact device + panel configuration in our archive anymore so I could only test the qurik moking in other ids.
Werner Sembach (1): drm/amd/display: Add quirk to force backlight type on some TUXEDO devices .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 32 ++++++++++++++++++- 1 file changed, 31 insertions(+), 1 deletion(-) -- 2.43.0