[Bug 203879] hard freeze on high single threaded load (AMD Ryzen 7 2700X CPU)

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=203879

Claude Heiland-Allen (claude at mathr.co.uk) changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|hard freeze on high single  |hard freeze on high single
                   |threaded load when Xorg is  |threaded load (AMD Ryzen 7
                   |active (AMD Ryzen 7 2700X   |2700X CPU)
                   |CPU, AMD Radeon RX 580 GPU) |

--- Comment #5 from Claude Heiland-Allen (claude at mathr.co.uk) ---
(In reply to Michel Dänzer from comment #2)
> That sounds like a general CPU related stability issue, not directly related
> to the amdgpu driver.

The later tests make me agree, changed title of report, not sure which
Product/Component would be more appropriate.

Adding more system monitoring seems to prevent the condition, perhaps due to
the added CPU load:

    watch -n 0.1 sensors
    watch -n 0.1 "cat /proc/cpuinfo | grep MHz"

It freezes during PNG saving of a large image, presumably this involves lots of
sequential RAM access.  I have XMP enabled in my motherboard BIOS settings
iirc, perhaps I should try disabling it?

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