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

[bugzilla-daemon at freedesktop.org]

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

--- Comment #72 from castor_fou <guillaume.ramelet at gmail.com> ---
I tried comment 64 suggestion: ivrs_ioapic[4]=00:14.0 ivrs_ioapic[5]=00:00.2 

After 2 days without any hang, I've just got one.
I am desperate about this problem, it has happened only since 18.04 upgrade. I
had no issue for 4 years with 16.04 and previous versions.

My mitigation is to cron a restart of display-manager twice a day. What a pity
solution.
0 12,19 * * * /bin/systemctl restart display-manager

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