I guess even with a single display, multi-threaded apps like the web browser could still trigger this nouveau crash or similar by rendering from multiple threads.
Based on upstream's comment https://bugs.freedesktop.org/show_bug.cgi?id=92438#c39 I would expect nouveau to continue to crash under both multi-monitor and other multi-threaded rendering conditions (like webbrowser-app?).
I guess even with a single display, multi-threaded apps like the web browser could still trigger this nouveau crash or similar by rendering from multiple threads.
There's a comment here suggesting the same crash might also happen in some processes like webbrowser-app even under Unity7: /bugs.launchpad .net/ubuntu/ +source/ unity8- desktop- session/ +bug/1595238/ comments/ 15
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which further supports the theory.
Based on upstream's comment https:/ /bugs.freedeskt op.org/ show_bug. cgi?id= 92438#c39 I would expect nouveau to continue to crash under both multi-monitor and other multi-threaded rendering conditions (like webbrowser-app?).