Switching to Nouveau let me complete installing an ubuntu 12.04 guest successfully.
A second Ubuntu 14.04 system with same hardware but an AMD graphics card and proprietary driver also completed installing the ubuntu 12.04 guest. So the conflict has only been triggered by the recommended Nvidia proprietary drivers (version 331.38). -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1343422 Title: Starting a virtualbox guest triggers kernel "BUG: soft lockup" in host To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/virtualbox/+bug/1343422/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
