Pinto Ubuntu 12.04.1 LTS Upgrade

Having backed up and cloned the Ubuntu 10.04 partition, I’m ready to upgrade the cloned partition to 12.04.1 LTS.

All that’s required is to boot into the clone partition and run System->Administration->Upgrade Manager.  First, I checked for and applied outstanding updates to 10.04.  Then, I pushed the Upgrade button.  There was a warning that third party sources were disabled and they could be re-enabled after the upgrade with the software-properties tool.

During the installation, it wanted to replace my NTP configuration (I had picked a couple local servers) and /etc/apparmor.d/usr.sbin.cupsd. The latter had custom stuff for my Lexmark printer, so I’ll probably need to reinstall that. /etc/default/nfs-common had some changes too. I had added NEED_IDMAPD=yes to mine, but I don’t remember why. I’m going to use the new version and see if anything breaks.

After the installation, I rebooted and found the first problem right away. Grub had been updated to run the new 3.2 kernel, but using the old sda6 file system. The mouse didn’t work and neither did networking, but I was able to log in. I fixed up /boot/grub/menu.lst and rebooted. I did notice that the upgrade left the older kernel files that were referenced in menu.lst outside of the DEBIAN AUTOMAGIC KERNELS LIST section. That’s an improvement.