Upgrade to Ubuntu 26.04

I upgraded Ubuntu this week. Looking back at my previous operating system upgrades, I see these notes: 2014: Ubuntu 14.04 and grub: I had to get a boot-repair disk image and do emergency repair work with sudo boot-repair to recover from a system that wouldn’t boot. But I was philosophical: “When upgrading a system we must be prepared for possible problems. We cannot expect it to always go smoothly. Even in the face of such technical problems we must try to remain tranquil.” 2018: Ubuntu upgrade to 18.04: All smooth, and I took the time to correct problem with swap space. 2025: Ubuntu 24.04 upgrade broke GNOME and now I run KDE and love it. I run Ubuntu on my main personal machine and my work machine, and use the current Long-Term Support (LTS) release on both. LTS is updated every two years, and receives updates for three more years (with still more available for a subscription). Earlier this year Ubuntu 26.04 came out—an LTS release—and when 26.04.1 came out just recently, systems…