[Bug 104481] GPU lockup Polaris 11 - AMD RX 460 and RX 550 on amd64 and on ARMv7 platforms while playing video

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=104481

--- Comment #6 from Luis Mendes <luis.p.mendes at gmail.com> ---
(In reply to Julien Isorce from comment #5)
> (In reply to Luis Mendes from comment #0)
> > I can also provide the apitrace trace file, but it takes around 1GB of data.
> 
> Just provide it through google drive or other similar way, see
> https://bugs.freedesktop.org/show_bug.cgi?id=94900#c15

I haven't sent updates on this issue for a while, but this is now more diverse,
that is, on the amd64 platforms (TYAN S7002, TYAN S7025) that I have, I am
getting trouble for the amdgpu driver to load, and when I am able to do so, it
runs into a GPU lockup as soon at it tries to enter into graphical X session
mode. That has been like so for kernels linux-4.16.x, 4.17.x and 4.18-rcX.
Please see
https://lists.freedesktop.org/archives/amd-gfx/2018-July/023925.html

On armhf the story has been different... I was able to have a working
configuration with Ubuntu 17.10, kernel 4.17.6 and kodi 17.3, however, the same
kernel with Ubuntu 18.04 and kodi 17.6 made the problem reappear. I switched to
kernel-4.18-rc8 and the problem went away again. I can provide an apitrace for
4.17.6 if desired, but it looks like it is fixed with kernel 4.18. 

>From my side, I am now more concerned with my amd64 platforms, as I am simply
unable to use the AMD gpus.

Please advise.

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