<div dir="ltr">Hi Nicolai,<div><br></div><div>It makes sense.</div><div><br></div><div>The easiest way to reproduce the real freeze is to:<br>- Run vblank_mode=0 glxgears<br>- Open <a href="https://hangouts.google.com/start">https://hangouts.google.com/start</a><br>- Activate KDE compositing<br><div><br></div><div>It will freeze within a few minutes.</div></div><div><br></div><div>Cheers,</div><div>Bráulio</div></div><br><div class="gmail_quote"><div dir="ltr">On Mon, Apr 16, 2018 at 4:44 AM Nicolai Hähnle <<a href="mailto:nhaehnle@gmail.com">nhaehnle@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">On 14.04.2018 00:24, Bráulio Bhavamitra wrote:<br>
> It ALWAYS crashes on shader15 of <br>
> <a href="http://www.graphicsfuzz.com/benchmark/android-v1.html" rel="noreferrer" target="_blank">http://www.graphicsfuzz.com/benchmark/android-v1.html</a>.<br>
<br>
This is very likely an unrelated issue to any kind of desktop hang <br>
you're seeing. The graphics fuzz shaders are the result of fuzzing to <br>
intentionally generate unusual control flow structures which are likely <br>
to trigger shader compiler bugs. Typical desktop workloads don't have <br>
such shaders, so any generic desktop hang you're seeing is almost <br>
certainly unrelated.<br>
<br>
Cheers,<br>
Nicolai<br>
<br>
<br>
> <br>
> Also reported at <a href="https://bugzilla.redhat.com/show_bug.cgi?id=1562530" rel="noreferrer" target="_blank">https://bugzilla.redhat.com/show_bug.cgi?id=1562530</a><br>
> <br>
> Using kernel 4.16 with options rcu_nocb=0-15 and amdgpu.dpm=0<br>
> <br>
> Cheers,<br>
> Bráulio<br>
> <br>
> On Mon, Mar 26, 2018 at 8:30 PM Bráulio Bhavamitra <<a href="mailto:brauliobo@gmail.com" target="_blank">brauliobo@gmail.com</a> <br>
> <mailto:<a href="mailto:brauliobo@gmail.com" target="_blank">brauliobo@gmail.com</a>>> wrote:<br>
> <br>
> Hi all,<br>
> <br>
> Following the random crashes happenning with many users (e.g.<br>
> <a href="https://www.phoronix.com/scan.php?page=news_item&px=Raven-Ridge-March-Update" rel="noreferrer" target="_blank">https://www.phoronix.com/scan.php?page=news_item&px=Raven-Ridge-March-Update</a>),<br>
> not only on Linux but also Windows, I've been struggling to<br>
> reproduce and generate any error log.<br>
> <br>
> After discovering that the error only happenned with KDE and games<br>
> (at least for me, see <a href="https://bugs.kde.org/show_bug.cgi?id=392378" rel="noreferrer" target="_blank">https://bugs.kde.org/show_bug.cgi?id=392378</a>),<br>
> I could reproduce after a failing suspend.<br>
> <br>
> The crash most of the times allows the mouse to keep moving, but<br>
> anything else works. Except for this time the keyboard worked so I<br>
> could switch the tty and save the dmesg messages. After this I had<br>
> to force reboot as it got stuck trying to kill the lightdm service<br>
> (gpu hanged?).<br>
> <br>
> The errors are, see attached the full dmesg:<br>
> [ 2899.525650] amdgpu 0000:03:00.0: couldn't schedule ib on ring <sdma0><br>
> [ 2899.525769] [drm:amdgpu_job_run [amdgpu]] *ERROR* Error<br>
> scheduling IBs (-22)<br>
> [ 2909.125047] [drm:amdgpu_job_timedout [amdgpu]] *ERROR* ring gfx<br>
> timeout, last signaled seq=174624, last emitted seq=174627<br>
> [ 2909.125060] [drm] IP block:psp is hung!<br>
> [ 2909.125063] [drm] GPU recovery disabled.<br>
> [ 2914.756931] [drm:amdgpu_cs_ioctl [amdgpu]] *ERROR*<br>
> amdgpu_cs_list_validate(validated) failed.<br>
> [ 2914.756997] [drm:amdgpu_cs_ioctl [amdgpu]] *ERROR* Failed to<br>
> process the buffer list -16!<br>
> [ 2914.997372] amdgpu 0000:03:00.0: couldn't schedule ib on ring <sdma0><br>
> [ 2914.997498] [drm:amdgpu_job_run [amdgpu]] *ERROR* Error<br>
> scheduling IBs (-22)<br>
> [ 2930.117275] [drm:amdgpu_cs_ioctl [amdgpu]] *ERROR*<br>
> amdgpu_cs_list_validate(validated) failed.<br>
> [ 2930.117405] [drm:amdgpu_cs_ioctl [amdgpu]] *ERROR* Failed to<br>
> process the buffer list -16!<br>
> [ 2930.152015] [drm:amdgpu_fill_buffer [amdgpu]] *ERROR* Trying to<br>
> clear memory with ring turned off.<br>
> [ 2930.157940] [drm:amdgpu_fill_buffer [amdgpu]] *ERROR* Trying to<br>
> clear memory with ring turned off.<br>
> [ 2930.180535] [drm:amdgpu_fill_buffer [amdgpu]] *ERROR* Trying to<br>
> clear memory with ring turned off.<br>
> [ 2933.781692] IPv6: ADDRCONF(NETDEV_CHANGE): wlp2s0: link becomes ready<br>
> [ 2945.477205] [drm:amdgpu_cs_ioctl [amdgpu]] *ERROR*<br>
> amdgpu_cs_list_validate(validated) failed.<br>
> [ 2945.477348] [drm:amdgpu_cs_ioctl [amdgpu]] *ERROR* Failed to<br>
> process the buffer list -16!<br>
> <br>
> System details:<br>
> HP Envy x360 Ryzen 2500U<br>
> ArchLinux, kernel 4.16rc6 and 4.15.12<br>
> <br>
> Cheers,<br>
> bráulio<br>
> <br>
> <br>
> <br>
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> <br>
<br>
<br>
-- <br>
Lerne, wie die Welt wirklich ist,<br>
Aber vergiss niemals, wie sie sein sollte.<br>
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</blockquote></div>