[Bug 87453] X randomly freezes (stuck on render ring)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=87453

--- Comment #2 from K. Péter <xfAhqoidntcombh at TrashMail.com> ---
Created attachment 114207
  --> https://bugs.freedesktop.org/attachment.cgi?id=114207&action=edit
freeze8.txz (tar xfJ)

Long time there were no freezings, only slight lags (delayed responses) (and
some font rendering and coloring artifacts - I do not know whether relates).

Today the display (the external, HDMI) suddenly went black - the I-beam mouse
cursor remaining.

Ctrl-Alt-F4 worked, I saved a bunch of logs.
"stuck on render ring", "GPU HANG: ecode 0:0x00ad6d2b".

My Xubuntu was up-to-date or at least almost. (Security updates: daily, other
updates: weekly.)

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