[Bug 101732] TURKS GPU - radeon 0000:01:00.0: failed to get a new IB (-35)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=101732

--- Comment #1 from Fede <fedevx at yahoo.com> ---
More Details which might be relevant and might have missed the first time
around:

Other packages:
linux-firmware 20170422.ade8332-1
kernel 4.11.9-1
Xorg driver: xf86-video-ati 1:7.9.0-1

Have also seen the following when booting the radeon kernel module is loaded:

Jul 21 09:51:06 hostname kernel: [drm:uvd_v1_0_start [radeon]] *ERROR* UVD not
responding, giving up!!!
Jul 21 09:51:06 hostname kernel: radeon 0000:01:00.0: failed initializing UVD
(-1).
Jul 21 09:51:06 hostname kernel: [drm:r600_ib_test [radeon]] *ERROR* radeon:
fence wait timed out.
Jul 21 09:51:06 hostname kernel: [drm:radeon_ib_ring_tests [radeon]] *ERROR*
radeon: failed testing IB on GFX ring (-110).
Jul 21 09:51:06 hostname kernel: [drm:radeon_device_init [radeon]] *ERROR* ib
ring test failed (-110).

Current situation:

GDM with Wayland shows only white noise on the screen. Switching to Xorg shows
the desktop as expected however it seems it is not using the radeon driver. As
glxinfo puts it:

OpenGL vendor string: VMware, Inc.
OpenGL renderer string: Gallium 0.4 on llvmpipe (LLVM 4.0, 256 bits)

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