After a few more disconnects with the Ubuntu Dock disabled and no crashes, it sounds like the culprit may be the Ubuntu Dock. The solution should be relatively simple then (although I'm a bit shocked that it can take down mutter)
After a few more disconnects with the Ubuntu Dock disabled and no crashes, it sounds like the culprit may be the Ubuntu Dock. The solution should be relatively simple then (although I'm a bit shocked that it can take down mutter)