I found a question in Ask Ubuntu http://askubuntu.com/q/202925/62612
which provided the information I needed. These problems are apparently caused by the Ubuntu drivers not being compatible with NVIDIA® Optimus™. Disabling "Switchable graphics" (Optimus) in the BIOS gets rid of symptoms in the installer. With Optimus disabled, I was able to complete the installation. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1372867 Title: Graphics problems on Dell Precision M4800 install To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubiquity/+bug/1372867/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
