Quote:
Originally Posted by colibris79
Just the Radeon ppa. The devel version, 23.2.0, is the one from that ppa (though in the package manager does not show as a dev version)
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Are you using that ppa and same driver versions on the Mint 21 machines where Sigil IS working? If so you might want to try a ppa-purge (on the problem machine) and make sure everything works with the stock opensource driver. If so start over with installing the latest radeon driver from the ppa.
I'm not familiar with an official Radeon ppa for their proprietary drivers, but there is a ppa for newer versions of the opensource driver:
ppa:oibaf/graphics-drivers
If you can't get it working with the ppa you're using, you may want to try it out. Easy enough to roll back with ppa-purge after.
$ sudo apt install ppa-purge
$ sudo ppa-purge ppa:oibaf/graphics-drivers