Hello,
On my Legion Go S, which has an IPS LCD screen, the brightness slider in Steam
becomes very unbalanced on amd-staging-drm-next, with the bottom 45% of the
slider no longer appearing to be any different than the minimum value. After
bisecting, I landed on 20f5481aaf17 ("drm/amd/display: Add power module on
Linux") as the first bad commit.
I uploaded a dmesg from a good kernel vs a bad kernel below.
Last good kernel:
https://gist.github.com/matte-schwartz/e98e4d3e1d8d3c4c042e2a76450b48b1
First bad kernel:
https://gist.github.com/matte-schwartz/5ef4f6967a17bc534e81f79e5cf71e02
Let me know if there are any additional details I can provide to help with
debugging this further.
Thanks,
Matt