https://bugs.freedesktop.org/show_bug.cgi?id=109068
--- Comment #3 from Samantha McVey samantham@posteo.net --- Created attachment 142838 --> https://bugs.freedesktop.org/attachment.cgi?id=142838&action=edit 4.20-rc5 dmesg
In addition, this is what happens to the levels of "brightness" and "actual_brightness" before and after sleep on amd-staging-drm-next:
Before sleep: actual_brightness: 12141 brightness: 102 After sleep: actual_brightness: 0 brightness: 102
On 4.20-rc5 or 4.19 actual_brightness is not at 0 after resume from suspend.