Related upstream bugs:
https://gitlab.freedesktop.org/mesa/mesa/-/issues/1087 https://gitlab.freedesktop.org/mesa/mesa/-/issues/1080
When I last hit this problem myself it was due to nouveau not being thread safe (last seen in Mir/Unity8 bug 1553328).
Related upstream bugs:
https:/ /gitlab. freedesktop. org/mesa/ mesa/-/ issues/ 1087 /gitlab. freedesktop. org/mesa/ mesa/-/ issues/ 1080
https:/
When I last hit this problem myself it was due to nouveau not being thread safe (last seen in Mir/Unity8 bug 1553328).