I upgraded from 12.10 to 13.05 a few days ago. I ran software updates and installed everything offered before running the upgrade, but something didn't go quite as it should have: the upgrade seemed to have trouble installing the kernel. I ran apt-get install which seemed to fix things... until I tried to get both monitors working at their correct resolutions.
None of the installed drivers worked, so I went to NVIDIA and downloaded the latest for my card (GeForce GT 640). I discovered the installer wouldn't work with X running, so I tried booting into recovery mode. I got a blank screen with the two versions on the main menu of GRUB, and with one of the "previous versions". The other previous versions gave me an error message to the effect that they weren't really there. I booted into Gnome, switched to TTY-2, used sudo stop lightdm to stop X and ran the installer (NVIDIA-Linux-x86_64-295.53.run). I then got a series of error messages (which I don't remember verbatim, sorry) the gist of which seemed to be the kernel isn't the one the installer was expecting and the GCC compiler was the wrong version.
I believe the real problem is the incomplete upgrade. Can I salvage it? I'd really rather not do a complete re-install.
Thanks in advance.
Terry
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