Random black screen on RX 470, HDMI 4k-60Hz

Submitted by jer..@..il.com

Assigned to Default DRI bug account

Link to original bug (#102389)

Description

I am using amd-staging on arch linux - https://aur.archlinux.org/packages/linux-amd-staging-git/ and AMD RX 470.

I have 4k monitor (AOC U2879VF), which display port connector has broken, so i'm forced to use HDMI. On dp there were no problem, unfortunately while using HDMI 4k 60Hz I get random black screen, lasting for 1-2 seconds, while using my computer (watching movie, playing games, or browsing internet).

The black screens happens since at least 4.11 amd-staging-git version.

I attached dmesg log, and xorg log. If you need something else please tell me.