The .config/autostart file that you suggested in the first thread you linked to? Doesn’t actually execute. I can start my disposable, I can go look and see the file is there (meaning I didn’t put it in the disposable, or in the TemplateVM, but rather in the DVM template)…but I put in a “touch” command to see if it ran and for some reason what I set gets overridden afterwords, or whether it just doesn’t run. It doesn’t run.
I suspect that’s something that doesn’t work in Debian. (I know I successfully use autostart or rather autostart-scripts in dom0. I tried both directories here.)
THIS: Default applications by file type/cant get rid of ImageMagick - #5 by otz actually worked. (Now I get to clean all the other crap out of my salt files, do this instead, regenerate TemplateVM, DVM-template, and named DVM, and hope it still works!)
BTW having the thunar desktop file point to a script that made the changes then brought up Thunar would probably have worked. Except that thunar was actually being brought up by “File Manager” which bypassed that particular kludge.