Comment # 6 on bug 1116611 from Michal Srb

From the log in comment 0:

(II) xfree86: Adding drm device (/dev/dri/card0)
(II) xfree86: Adding drm device (/dev/dri/card1)
(--) PCI:*(0@0:1:0) 1002:990b:103c:1983 rev 0, Mem @ 0xd0000000/268435456,
0xf0400000/262144, I/O @ 0x00005000/256, BIOS @ 0x????????/131072
(--) PCI: (1@0:0:0) 1002:6660:103c:1983 rev 0, Mem @ 0xe0000000/268435456,
0xf0300000/262144, I/O @ 0x00004000/256, BIOS @ 0x????????/131072
...
(II) Applying OutputClass "Radeon" to /dev/dri/card0
...
(II) Applying OutputClass "AMDgpu" to /dev/dri/card1
...
(II) RADEON(0): glamor X acceleration enabled on AMD ARUBA (DRM 2.50.0 /
4.19.1-1-default, LLVM 6.0.1)
...
(II) RADEON(G0): glamor X acceleration enabled on AMD Radeon HD 8600M Series
(HAINAN, DRM 3.27.0, 4.19.1-1-default, LLVM 6.0.1)

This looks like you have two AMD GPUs in your machine. The initialization of
the second fails as a GPU screen fails. Can you please clarify, do you have two
GPUs and do you intend to use them both (e.g. for additional outputs or render
offloading)?