I can confirm this very same bug. I used Envy to install the binary nVidia driver. I'm going to run Envy and uninstall the driver, then try upgrading Ubuntu again. I'll post the result here.
I can confirm this very same bug. I used Envy to install the binary nVidia driver. I'm going to run Envy and uninstall the driver, then try upgrading Ubuntu again. I'll post the result here.