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<p>HI Luis,</p>
<p><br>
</p>
<p>Let us trace the issue one by one.</p>
<p><br>
</p>
<p>IB test fail:</p>
<p>This should be regression issue on 4.18, you can bisect the
kernel patches.</p>
<p>GPU hang:</p>
<p>Fix IB test fail first.</p>
<p><br>
</p>
<p>Thanks</p>
<p>JimQu<br>
</p>
<p><br>
</p>
<br>
<div class="moz-cite-prefix">On 2018年07月11日 17:34, Luís Mendes
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:CAEzXK1pnvjJfe2Q0WVeGToyZNDH_GQD1eMJnf3R=GNQTbK8pjw@mail.gmail.com">
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<div>Hi Jim,</div>
<div><br>
</div>
<div>Thanks for your interest in this issue. Actually this is a
multiple issue... not only the IB ring test is failing... as I
am having quite some trouble getting the cards SAPPHIRE RX 550
4GB on a Tyan S7025 and SAPPHIRE RX 460 2GB on a TYAN S7002 to
work, both systems using same Ubuntu 18.04 with vanilla
kernel.<br>
</div>
<div><br>
</div>
<div><b>1. May you also test earlier kernel? v4.17 or v4.16.</b><br>
</div>
<div>I've tested kernels v4.17.5 and v4.16.6 with same system
and both are able to pass the IB ring test and system boots
into X using NVIDIA as the display connected card.</div>
<div>dmesg log attached for kernel 4.17.5, file
TYAN_S7025_kernelv4.17.5_amdgpu_IB_ring_test_OK.txt.<br>
</div>
<div><br>
</div>
<div><b>2. May you test the issue only with amdgpu?</b></div>
<div>
<div>- I've tested on a TYAN S7002 system with a single
SAPPHIRE RX 460 2GB, on-board VGA enabled and used as
primary display.</div>
<div>Kernel v4.18-rc4 fails the IB ring test, system is able
to enter X through the on-board VGA. <br>
</div>
<div>dmesg log attached for kernel 4.18-rc4, file
TYAN_S7002_kernel_v4.18-rc4_IB_ring_test_fail.txt.</div>
<div><br>
</div>
<div>- Same TYAN S7002 system, but now with on-board VGA
disabled and using RX 460 as display connected card.<br>
</div>
<div>
<div>Kernels v4.17.5 and v4.16.6 are able to pass the IB
ring test, but GPU hangs before entering X. Don't have
logs for these yet.<br>
</div>
<br>
<div>Regards,</div>
<div>Luís Mendes</div>
<div>Aparapi contributor and MSc Researcher<br>
</div>
<div><br>
</div>
<div><br>
</div>
<br>
</div>
<br>
</div>
</div>
<div class="gmail_extra"><br>
<div class="gmail_quote">On Wed, Jul 11, 2018 at 3:49 AM, Qu,
Jim <span dir="ltr"><<a href="mailto:Jim.Qu@amd.com"
target="_blank" moz-do-not-send="true">Jim.Qu@amd.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">Hi Luis,<br>
<br>
1. May you also test earlier kernel? v4.17 or v4.16.<br>
2. May you test the issue only with amdgpu?<br>
<br>
Thanks<br>
JimQu<br>
<br>
______________________________<wbr>__________<br>
发件人: amd-gfx <<a
href="mailto:amd-gfx-bounces@lists.freedesktop.org"
moz-do-not-send="true">amd-gfx-bounces@lists.<wbr>freedesktop.org</a>>
代表 Luís Mendes <<a href="mailto:luis.p.mendes@gmail.com"
moz-do-not-send="true">luis.p.mendes@gmail.com</a>><br>
发送时间: 2018年7月11日 6:04:00<br>
收件人: Michel Dänzer; Koenig, Christian; amd-gfx list<br>
主题: Re: Regression with kernel 4.18 - AMD RX 550 fails IB
ring test on power-up<br>
<span class="im HOEnZb"><br>
Hi,<br>
<br>
Issue remains in kernel 4.18-rc4 using SAPPHIRE RX 550
4GB.<br>
<br>
Logs follow attached.<br>
<br>
Regards,<br>
Luis<br>
<br>
</span>
<div class="HOEnZb">
<div class="h5">On Tue, Jun 26, 2018 at 10:08 AM, Luís
Mendes <<a href="mailto:luis.p.mendes@gmail.com"
moz-do-not-send="true">luis.p.mendes@gmail.com</a><<wbr>mailto:<a
href="mailto:luis.p.mendes@gmail.com"
moz-do-not-send="true">luis.p.mendes@gmail.com</a><wbr>>>
wrote:<br>
Hi,<br>
<br>
I've tried kernel 4.18-rc2 on a system with a NVIDIA GTX
1050 Ti and an AMD RX 550 4GB and the RX 550 card is
failing the IB ring test.<br>
<br>
[ 5.033217] [drm:gfx_v8_0_ring_test_ib [amdgpu]]
*ERROR* amdgpu: ib test failed
(scratch(0xC040)=0xFFFFFFFF)<br>
[ 5.033264] [drm:amdgpu_ib_ring_tests [amdgpu]]
*ERROR* amdgpu: failed testing IB on ring 6 (-22).<br>
<br>
Please see the attached log.<br>
<br>
Regards,<br>
Luís<br>
<br>
</div>
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