For future users running into this: it is apparmor disabling access, the dsc extension should be whitelisted.
I opened an issue for ubuntu at https://bugs.launchpad.net/ubuntu/+source/ghostscript/+bug/2160192. But if someone is running into it, the instructions for the workaround are available there. On Wed, Jul 08 2026, Arash Esbati wrote: > Tamas Papp <[email protected]> writes: > >> Thanks for the quick response! > > You're welcome. > >> Indeed the preamble was a problem, I had a >> >> (setq preview-auto-cache-preamble t) >> >> in my config, now it is set to nil. > > preview-latex uses mylatex in order to generate the preamble format; > maybe it's an issue with mylatex and LuaLaTeX? > >> But then I am running into another problem, which I have narrowed down >> to pdf2dsc being unable to write files within my home directory: >> >> tamas@tamas-laptop ~ % pdf2dsc x.pdf x.prv/tmpSNVDcD/preview.dsc >> Error: /invalidfileaccess in --file-- >> Operand stack: >> DSCfile (x.prv/tmpSNVDcD/preview.dsc) (w) >> Execution stack: >> %interp_exit .runexec2 --nostringval-- --nostringval-- >> --nostringval-- 2 %stopped_push --nostringval-- --nostringval-- >> --nostringval-- false 1 %stopped_push 1804 1 3 %oparray_pop 1803 1 3 >> %oparray_pop 1788 1 3 %oparray_pop 1659 1 3 %oparray_pop >> --nostringval-- %errorexec_pop .runexec2 --nostringval-- >> --nostringval-- --nostringval-- 2 %stopped_push --nostringval-- >> Dictionary stack: >> --dict:755/1123(ro)(G)-- --dict:0/20(G)-- --dict:86/200(L)-- >> Current allocation mode is local >> Last OS error: Permission denied >> Current file position is 2594 >> GPL Ghostscript 10.06.0: Unrecoverable error, exit code >> 1preview-auto-cache-preamble nil >> >> tamas@tamas-laptop ~ % ll x.prv/tmpSNVDcD >> total 0 >> >> My understanding is that this is not a problem with preview-latex, so >> I will follow up on the Ghostscript mailing lists; I am posting here >> in case someone else runs into this and finds it helpful, or has a >> suggestion. > > Yes, this part: > > Last OS error: Permission denied > > tells something like that. Yes, please report back once you have this > resolved for others facing the same issue. Good luck. > > Best, Arash
