Comment # 25
on bug 111244
from Andrey Grodzovsky
(In reply to miba_c from comment #24) > Having the same issue on a ThinkPad T495s (BIOS 1.06) with a Ryzen 7 PRO > 3700U, Kernel 5.2.8-arch1-1-ARCH, Mesa 19.1.4-1 and running sway (wayland) > as a window manager. > > dmesg shows me: > [drm] Fence fallback timer expired on ring sdma0 > amdgpu 0000:05:00.0: [drm:amdgpu_ib_ring_tests [amdgpu]] *ERROR* IB test > failed on gfx (-110). > [drm:amdgpu_device_ip_late_init_func_handler [amdgpu]] *ERROR* ib ring test > failed (-110). > > One thing to note is that setting amd_iommu=off as a kernel parameter makes > this issue really rare but it'll still sometimes happen, maybe it's also > just luck. Please attach full log, also it looks log.
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