Public bug reported:
I have installed a IPP printer through the CUPS web admin interface.
When I try to print a document using Papers (Document Viewer) the first
print job works fine, the second doesn't get printed, the third print
job works again, ... So every other print job fails to get printed.
Printing works fine using Firefox, Chromium, Evince or Okular, so it
seems to be a problem specific to Papers.
Logs when it works:
```
Nov 03 14:42:07 ubuntu2510-VirtualBox papers[5604]:
GtkPrintOperation::create-custom-widget not supported with portal
Nov 03 14:42:07 ubuntu2510-VirtualBox dbus-daemon[3040]: [session uid=1000
pid=3040 pidfd=5] Activating service name='org.openprinting.Backend.CUPS'
requested by ':1.124' (uid=1000 pid=3906
comm="/usr/libexec/xdg-desktop-portal-gnome" label="unconfined")
Nov 03 14:42:07 ubuntu2510-VirtualBox dbus-daemon[3040]: [session uid=1000
pid=3040 pidfd=5] Successfully activated service 'org.openprinting.Backend.CUPS'
Nov 03 14:42:07 ubuntu2510-VirtualBox cups[5783]: g_variant_new_string:
assertion 'string != NULL' failed
Nov 03 14:42:07 ubuntu2510-VirtualBox xdg-desktop-portal-gnome[3906]: [Error]
[Frontend] Error getting default printer for backend :
GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name
org.openprinting.Backend.FILE was not provided by any .service files
Nov 03 14:42:07 ubuntu2510-VirtualBox cups[5783]: g_variant_new_string:
assertion 'string != NULL' failed
Nov 03 14:42:12 ubuntu2510-VirtualBox xdg-desktop-portal-gnome[3906]:
g_ascii_strcasecmp: assertion 's1 != NULL' failed
Nov 03 14:42:16 ubuntu2510-VirtualBox chronyd[1319]: Selected source
185.125.190.123 (2.ntp.ubuntu.com)
```
Logs when it doesn't work:
```
Nov 03 14:42:27 ubuntu2510-VirtualBox papers[5604]:
GtkPrintOperation::create-custom-widget not supported with portal
Nov 03 14:42:27 ubuntu2510-VirtualBox cups[5783]: g_variant_new_string:
assertion 'string != NULL' failed
Nov 03 14:42:27 ubuntu2510-VirtualBox xdg-desktop-portal-gnome[3906]: [Error]
[Frontend] Error getting default printer for backend :
GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name
org.openprinting.Backend.FILE was not provided by any .service files
Nov 03 14:42:27 ubuntu2510-VirtualBox cups[5783]: g_variant_new_string:
assertion 'string != NULL' failed
Nov 03 14:42:30 ubuntu2510-VirtualBox xdg-desktop-portal-gnome[3906]:
g_ascii_strcasecmp: assertion 's1 != NULL' failed
Nov 03 14:42:30 ubuntu2510-VirtualBox xdg-desktop-portal-gnome[3906]: [Error]
[Frontend] Error opening socket on Ricoh_IMC3000 CUPS : The connection is closed
Nov 03 14:42:30 ubuntu2510-VirtualBox xdg-desktop-portal-gnome[3906]: [Error]
[Frontend] Error getting socket for job on Ricoh_IMC3000 CUPS: Success
Nov 03 14:42:30 ubuntu2510-VirtualBox xdg-desktop-portal-gnome[3906]: [Error]
[Frontend] Error connecting to backend for printing file /tmp/.PCP6E3 on
Ricoh_IMC3000 CUPS: Success
```
Seems to affect both Ubuntu 25.04 and 25.10.
ProblemType: Bug
DistroRelease: Ubuntu 25.10
Package: papers 48.0-1ubuntu1
ProcVersionSignature: Ubuntu 6.17.0-6.6-generic 6.17.1
Uname: Linux 6.17.0-6-generic x86_64
ApportVersion: 2.33.1-0ubuntu3
Architecture: amd64
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Mon Nov 3 14:42:56 2025
InstallationDate: Installed on 2025-11-03 (0 days ago)
InstallationMedia: Ubuntu 25.10 "Questing Quokka" - Release amd64 (20251007)
ProcEnviron:
LANG=en_US.UTF-8
PATH=(custom, no user)
SHELL=/bin/bash
TERM=xterm-256color
XDG_RUNTIME_DIR=<set>
SourcePackage: papers
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: papers (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apparmor apport-bug questing wayland-session
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https://bugs.launchpad.net/bugs/2130566
Title:
Printing doesn't work every other time
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