The gimp.org appimage is a great piece of work, look at the generate script and it truly is cutting edge. Very good for testing (I look-n-hope at the distribute tool) but not very backward compatible. Nice to see they have a torrent here:
https://download.gimp.org/gimp/v3.0/linux/
So for CtrlAltDel (and anyone else) again a RC3 remix from the ubuntu PPA update (thanks to Mateusz Łukasik)
Again on my cloud storage, no guarantees, obsolete in a couple of weeks 86 MB download
updated gmic_gimp_qt to 3.5.2 (added the old libjpeg.so.8 file which is a gmic dependency).
https://u.pcloud.link/publink/show?code=...V1ymHaL7Fk
If it works for you, great, otherwise there is the delete key (...and yes I did add rc3 to the splash screen)