I’ve had the typical disasters with partition tables and boot loader mixups, but the one I keep coming back to is updating my Nvidia drivers too eagerly. Whether something gets messed up with an external monitor, or the laptop starts resisting switching away from the integrated GPU, or an electron app I use regularly that makes heavy use of 3D acceleration breaks, or I just need to bump the driver version in a reproducible system state record… it’s just bad news.
We tried it once, but it didn’t grab my son’s interest at the outset. I’m going to have us try again as I’ve heard nothing but praise for it.