Can't open PDFs from SMB share with Okular
bug
When I use Dolphin to navigate to my home SMB share that has a bunch of PDFs (the scanner sends them all there) and open one of them, it opens them in Libreoffice Draw. I don't like that for my system default, as I prefer Okular (which also came preinstalled, so I wonder why it isn't the default). I changed the system default for PDFs to Okular and get this error message in the picture. I'm guessing it's an OS problem because of that "Input-/Output" part in the error message. However, all the other apps capable of displaying PDFs open it just fine direct from the SMB folder.
Translation:
"The file "smb://ben@192.168.178.4/scannershare/ScannedDoc01.pdf" could not be opened.
Reason: It is not possible to establish the input/output module.
Unknown protocol: "smb"."
Translation:
"The file "smb://ben@192.168.178.4/scannershare/ScannedDoc01.pdf" could not be opened.
Reason: It is not possible to establish the input/output module.
Unknown protocol: "smb"."
Solution
Had the same problem. Have a look at this -> https://gist.github.com/NonLogicalDev/f518e93aa19d3fc620bae15d388cba58
After that you'll need to edit your default apps to use the newly created .desktop files.
After that you'll need to edit your default apps to use the newly created .desktop files.
Gist
Fix up KDE apps distributed as flatpacks being unable to open Remote files (ex: Samba shares) from Dolphin (File Explorer) - README.md
