@Shmu26 so whats the current status of your PC ? have you got another thread somewhere , thats a general fix not specifically timeshift ? I previously re-installed grub on endeavourOS from a usbSo I opened my eyes and noticed that TimeShift gives you an advanced options menu to pick and choose
your poisonyour grub options.
So this time, I unticked everything in that menu, and performed a restore on a perfectly working 20.04 Kubuntu system, restoring it to 21.04 Ubuntu.
This time I got successfully to the grub screen, but the Ubuntu entry let me to a black screen with an obscure error message that I failed to take a pic of.