Dark screen after suspend

Support Graphics & Display
1

Hello,
After wake up (after suspend) my laptop screen is dark, brightness is low and there is no way to change it. Another connected monitors are ok, only laptop screen is dark. Only way is to restart laptop.
Problem occurs from update to latest version of Manjaro KDE. I tied fresh installation, but problem is on live boot too. I tried different distribution and older version and there is behaviour correct there.

inxi -Fxzc0 --no-host

https://pastebin.com/7fW9FJg5

journalctl -b -0

https://pastebin.com/yZq571h9
suspend: 8:22
wake up: 8:23

2

I seems that there is something wrong in kernel 5.9
I tried LTS 5.4 and latest 5.11 and in both there is behaviour OK

3

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