Hi, I'm getting the exact same problem with my thumbnailer: https://github.com/illwieckz/crunch-thumbnailer
After investigations using "G_MESSAGES_DEBUG=all" I discovered the thumbnailer is called by nautilus this way: bwrap --ro-bind /usr /usr --ro-bind /etc/ld.so.cache /etc/ld.so.cache --ro-bind /bin /bin --ro-bind /lib64 /lib64 --ro-bind /lib /lib --ro- bind /sbin /sbin --ro-bind-try /var/cache/fontconfig /var/cache/fontconfig --proc /proc --dev /dev --chdir / --setenv GIO_USE_VFS local --unshare-all --die-with-parent --setenv G_MESSAGES_DEBUG all --bind /tmp/gnome-desktop-thumbnailer-M7A75Z /tmp --ro-bind /home/illwieckz/Mapping/Unvanquished/InterstellarOasis/build/test/map- metro_test.dpkdir/textures/metro/alumb_t.crn /tmp/gnome-desktop-file-to- thumbnail.crn crunch-thumbnailer -s 256 /tmp/gnome-desktop-file-to- thumbnail.crn /tmp/gnome-desktop-thumbnailer.png My thumbnailer is calling the "convert" tool from ImageMagick, but convert is an "alternative": $ readlink /usr/bin/convert /etc/alternatives/convert $ readlink /etc/alternatives/convert /usr/bin/convert-im6.q16 Since "/etc/alternatives" is not bound by bwrap, the thumnailer fails. Any ETA for the fix? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1808702 Title: Bubblewrap integration broke user thumbnailers To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-desktop3/+bug/1808702/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
