Long-term usage review and report 10 of the Slimbook Executive laptop, with major operating system upgrade from Kubuntu 22.04 LTS to 24.04 LTS, covering upgrade procedure and associated questions and problems, numerous post-upgrade regressions and bugs like missing programs, unwanted changes in configurations and settings in login screen, Konsole, Kate and desktop, backward-incompatible apt sources management breakage, worse ergonomics with annoying transparency effects, incomplete theming, s...
