Bug 107910

After upgrading fedora-28 on my Kaveri system (7650k) from linux 4.17 to 4.18, IO get the following messages during boot:

[    9.179034] [drm] Initialized amdgpu 3.26.0 20150101 for 0000:00:01.0 on minor 0
[    9.455965] EXT4-fs (sdb1): mounted filesystem with ordered data mode. Opts: (null)
[   12.349299] [drm:vce_v2_0_start [amdgpu]] *ERROR* VCE not responding, trying to reset the ECPU!!!
[   13.369509] [drm:vce_v2_0_start [amdgpu]] *ERROR* VCE not responding, trying to reset the ECPU!!!
[   14.389693] [drm:vce_v2_0_start [amdgpu]] *ERROR* VCE not responding, trying to reset the ECPU!!!
[   15.409895] [drm:vce_v2_0_start [amdgpu]] *ERROR* VCE not responding, trying to reset the ECPU!!!
[   16.430105] [drm:vce_v2_0_start [amdgpu]] *ERROR* VCE not responding, trying to reset the ECPU!!!
[   17.450301] [drm:vce_v2_0_start [amdgpu]] *ERROR* VCE not responding, trying to reset the ECPU!!!
[   18.470496] [drm:vce_v2_0_start [amdgpu]] *ERROR* VCE not responding, trying to reset the ECPU!!!
[   19.490691] [drm:vce_v2_0_start [amdgpu]] *ERROR* VCE not responding, trying to reset the ECPU!!!
[   20.510884] [drm:vce_v2_0_start [amdgpu]] *ERROR* VCE not responding, trying to reset the ECPU!!!
[   21.531093] [drm:vce_v2_0_start [amdgpu]] *ERROR* VCE not responding, trying to reset the ECPU!!!
[   21.551159] [drm:vce_v2_0_start [amdgpu]] *ERROR* VCE not responding, giving up!!!
[   21.551214] [drm:amdgpu_device_ip_set_powergating_state [amdgpu]] *ERROR* set_powergating_state of IP block <vce_v2_0> failed -110                                                                                                             
[   22.559257] [drm:amdgpu_vce_ring_test_ib [amdgpu]] *ERROR* amdgpu: IB test timed out.
[   22.559398] [drm:amdgpu_ib_ring_tests [amdgpu]] *ERROR* amdgpu: failed testing IB on ring 12 (-110).
[   22.559524] [drm:amdgpu_device_ip_late_init_func_handler [amdgpu]] *ERROR* ib ring test failed (-110).
[   97.849146] kauditd_printk_skb: 59 callbacks suppressed



Kernel options: amdgpu.dc=0 amdgpu.si_support=1 radeon.si_support=0 amdgpu.cik_support=1 radeon.cik_support=0