How to print from a flatpak app?

[SuffolkPunch]

I'm running flatpak (v 1.4.0-1~xenial) in LinuxMint 18.3 on my home PC.
I use CUPS to print from my home pc to a usb printer attached to my home server - both run LM 18.3.

I have installed the following flatpak apps:

net.scribus.Scribus/x86_64/stable
org.libreoffice.LibreOffice/x86_64/stable

My issue: Neither of these 2 apps sees my system printer. Instead, they just list a 'Generic Printer'. See pasted png image:

The drop-down list doesn't reveal any other printers.

My work-around - first export the file to pdf and then print from a non-flatpak pdf viewer!

So, does anyone know how you get a flatpak app to see printers that all the non-flatpak apps see?

[stbergmann]

(Works fine for me with the recent LO 6.2.4.2 flatpak on Fedora 30 GNOME/Wayland. In e.g. Writer, "File - Printer Settings..." dialog lists the correct printer, not "Generic Printer".)

[SuffolkPunch]

@stbergmann: That's interesting - is your printer on the same PC or (as in my case) on the same LAN accessed via CUPS?

[SuffolkPunch]

Didn't mean to close this issue - hit the wrong icon, sorry. I am still seeking a fix.

[SuffolkPunch]

Please re-open this issue.

[stbergmann]

@stbergmann: That's interesting - is your printer on the same PC or (as in my case) on the same LAN accessed via CUPS?

The latter, LAN via CUPS.

[eszlari]

Works here with my HP printer via USB:
Kubuntu 19.10
KDE Plasma 5.16.5
CUPS 2.2.12
flatpak 1.4.3

[Gwerlas]

Doesn't work with LAN printers
Fedora Silverblue 31
Cups 2.2.12
Flatpak 1.4.4

[Madko]

Same here on Fedora 32 Silverblue
Flatpak 1.6.3
Cups 2.3.1

I tried to give cups access to the LO flatpak thanks to flatseal, but no luck. Same with dbus acces. Is that a "green" tech to prevent waste of paper ? Pretty neat

[Erick555]

For me adding --socket=cups was enough to fix the issue.

Printer via LAN
Flatpak 1.8.1
Arch Linux
KDE Plasma 5.19

[geodro]

hey there, any updates on this?

[Erick555]

@geodro does solution from #90 (comment) works for you?