I've an ancient NVidia box at home, can try it out. I'm attaching patches for qtubuntu/qtmir to force Qt to use single threaded GL on nouveau.
** Branch linked: lp:~gerboland/qtubuntu/nouveau-workaround -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1553328 Title: Mir/Unity8/USC crashes/freezes on nouveau (nv50) in pushbuf_kref() especially with multiple monitors, webbrowser-app or system settings To manage notifications about this bug go to: https://bugs.launchpad.net/canonical-devices-system-image/+bug/1553328/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs