Nouveau deadlocks system

[Matt Leinhos]

Ubuntu 18.04 w/ kernel 4.18.0-15 or 4.19.28 w/ nouveau driver on top of Xen 4.11.1 regularly deadlocks system. It's reachable via network for a bit, then becomes completely unresponsive.

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: kerneloops 0.12+git20140509-6ubuntu2
Uname: Linux 4.19.28-041928-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.5
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Wed Mar 13 09:13:27 2019
InstallationDate: Installed on 2019-02-08 (32 days ago)
InstallationMedia: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725)
ProcEnviron:
 TERM=screen.xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: kerneloops
UpgradeStatus: No upgrade log present (probably fresh install)

[Matt Leinhos (mleinhos)]

I reported this incorrectly, since the actual traces aren't included. Here's the kernel log.