Good news! I was able to upgrade on my first machine. I didn't really know what to do about removing the driver -- in my searching I got the idea to try "sudo apt-get remove nvidia-glx", and that removed some stuff and after a reboot didn't seem to affect my graphics situation. I had expected I might break something, but everything was working normally. (Is nvidia-glx the proprietary driver? I'm not even sure I'm using that -- I got this machine from System 76 and have never tinkered with the graphics driver at all.)
Also before trying the upgrade again, I installed a whole bunch of updates, so I don't know if there may have been a fix in there, but anyway, now when I ran the upgrade, it worked just fine -- no problems at all! Thanks, Everyone, for your help with this. I'll report back with results on my other machine. -- unresolvable" problem when upgrading from 7.10 to 8.04 https://bugs.launchpad.net/bugs/278285 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs