starting X on AMDGPU takes up to a minute

Submitted by Yury

Assigned to Default DRI bug account

Link to original bug (#110615)

Description

Created attachment 144168
dmesg utility output

Starting X on AMDGPU takes up to a minute (about 40s, I think).
I have two video adapters, integrated NVIDIA and external R7 240.

It's only the first X startup after the boot that takes that long (and it's exactly Xorg executable which produces the delay). All subsequent X startups are 'normal' (fast).
So I'd expect some system configuration option gets finally set after the 1st X startup, so maybe I could set it manually beforehand?

However, there are those dumps from AMDGPU in the dmesg log.
Didn't find anything useful on the net or in this BZ.

Attachment 144168, "dmesg utility output":
dmesg