[Bug 105733] Amdgpu randomly hangs and only ssh works. Mouse cursor moves sometimes but does nothing. Keyboard stops working.

[bugzilla-daemon@freedesktop.org]

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https://bugs.freedesktop.org/show_bug.cgi?id=105733

--- Comment #33 from Allan <allan4229@gmail.com> ---
(In reply to Jan Jurzitza from comment #31)
> I have found a workaround (amd patched kernel not required):
> 
> cat /sys/class/drm/card0/device/pp_dpm_sclk
> # insert appropriate index here, I went for 1077Mhz
> echo 3 > /sys/class/drm/card0/device/pp_dpm_sclk
> 
> Makes the GPU a bit slower (changes clock to 1077 Mhz on my card) for the
> session, but at least applications don't freeze the system anymore now (or
> at least this is delaying it so much that it works for multiple hours, but
> it didn't freeze for me yet)
> 
> Though because of the slowdown I don't think this is a good solution
> long-term. Maybe a hint towards a solution though maybe? What I noticed in
> radeon-profile is that on auto it is capable of running at the boost
> frequency (1266 Mhz) and not limited to the base frequency the product page
> specifies (1120 Mhz) by default, so I changed it here and it basically fixed
> it.
> 
> Fixes the issue on kernel 4.18.4

Even that I didn't mention, I tried it.

It worked for me for a while, and most part while I wasn't properly running 3D
rendering, but OpenCL codes instead.

But it never worked as a workaround cause it just randomized the time to happen
the errors.

And this is exactly why I didn't mention it before.

Indeed, I need to test it on kernel 4.18 yet.

###############################################################################

In time : seems like that the warranty of my motherboard will take a long time
to finish.

I borrowed an old PC from my aunt and I hope that it will be enough to compile
the kernel and test the GPU. It is going to be fun to compile a kernel on a
1.6GHz dual core (1C/2T).

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