SUMMARY Dolphin not working in Crostini (Debian Buster) STEPS TO REPRODUCE 1. Install Dolphin from Flatpak 2. Check permissions using Flatseal 3. Attempt to configure Dolphin via "Settings > Configure Dolphin" 4. Attempt to execute an AppImage (located in Home folder and checked as executable) OBSERVED RESULT 1. Selecting Settings > Configure Dolphin causes crash 2. Attempting to open AppImage results in error message "Unable to find an application that is able to open digikam-7.1.0-x86-64.appimage". EXPECTED RESULT It should be possible to configure Dolphin and start AppImages from the home folder. SOFTWARE/OS VERSIONS Linux: Debian Buster (v.10) / Crostini (on Chromebook) ADDITIONAL INFORMATION Please note that Nemo works perfectly under the same conditions.
You have described two separate issues here, the crash on opening the configure dialog and the failure to launch AppImages. Since separate problems will need to be fixed separately, please file two separate bugs. Note that crash reports must include a backtrace. Before reporting the AppImage issue, please check whether the file in question is marked as executable. Otherwise, the behavior is expected.
Thanks for your comments. Despite having made huge progress with Linux in a short time I sadly don't know how to generate a backtrace in Crostini! I have searched for guidance and not found anything relevant and I cannot find any crash logs in the Linux folders. I did mention that the AppImage was "located in the Home folder and checked as executable". I will follow your guidance and file this as a separate bug.
https://community.kde.org/Guidelines_and_HOWTOs/Debugging/How_to_create_useful_crash_reports#Debian
Thanks for the link. I tried the instructions for Debian. Although I could install gdb, I couldn't install a -dbg package for dolphin. However, I then thought that the flatpak debugging instructions would be more relevant: https://docs.flatpak.org/en/latest/debugging.html I didn't let the idea of running a shell within the application's sandbox put me off but after many hours of trying I couldn't produce a backtrace. No doubt things would be easier if I had a proper distro (although everything else in linux is working very nicely on my Chromebook). I admit I am out of my depth here and apologise for not being able to support my bug report. I was planning to install MX Linux with the KDE desktop on my Windows laptop but maybe linux is only for those who are more technically competent!