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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - amdgpu kernel 5.2 blank display after resume from suspend"
href="https://bugs.freedesktop.org/show_bug.cgi?id=111244#c25">Comment # 25</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - amdgpu kernel 5.2 blank display after resume from suspend"
href="https://bugs.freedesktop.org/show_bug.cgi?id=111244">bug 111244</a>
from <span class="vcard"><a class="email" href="mailto:andrey.grodzovsky@amd.com" title="Andrey Grodzovsky <andrey.grodzovsky@amd.com>"> <span class="fn">Andrey Grodzovsky</span></a>
</span></b>
<pre>(In reply to miba_c from <a href="show_bug.cgi?id=111244#c24">comment #24</a>)
<span class="quote">> 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.</span >
Please attach full log, also it looks log.</pre>
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