I discovered today that gnome-screenshot does not work on 25.10. So I tried Flameshot with the same effect. Though the logs don't really say much. Syslog simply says:
026-01-09T23:25:10.031515+00:00 rocinante /usr/libexec/xdg-desktop-portal[3770]: Failed to show access dialog: GDBus.Error:org.freedesktop.DBus.Error.AccessDenied: GDBus.Error:org.freedesktop.DBus.Error.AccessDenied: Only the focused app is allowed to show a system access dialog
2026-01-09T23:25:10.041726+00:00 rocinante org.flameshot.Flameshot.desktop[1583748]: flameshot: error: Unable to capture screen
2026-01-09T23:25:10.047856+00:00 rocinante org.flameshot.Flameshot.desktop[1583748]: flameshot: error: Unable to capture screen
2026-01-09T23:25:16.185071+00:00 rocinante xdg-desktop-portal-gnome[3803]: Failed to associate portal window with parent window
2026-01-09T23:25:16.223782+00:00 rocinante /usr/libexec/xdg-desktop-portal[3770]: Failed to show access dialog: GDBus.Error:org.freedesktop.DBus.Error.AccessDenied: GDBus.Error:org.freedesktop.DBus.Error.AccessDenied: Only the focused app is allowed to show a system access dialog
2026-01-09T23:25:16.234026+00:00 rocinante org.flameshot.Flameshot.desktop[1583748]: flameshot: error: Unable to capture screen
2026-01-09T23:25:16.234054+00:00 rocinante org.flameshot.Flameshot.desktop[1583748]: QPixmap::scaled: Pixmap is a null pixmap
2026-01-09T23:25:16.236555+00:00 rocinante org.flameshot.Flameshot.desktop[1583748]: QPixmap::scaled: Pixmap is a null pixmap
2026-01-09T23:25:22.764729+00:00 rocinante xdg-desktop-portal-gnome[3803]: Failed to associate portal window with parent window
2026-01-09T23:25:22.765967+00:00 rocinante /usr/libexec/xdg-desktop-portal[3770]: Failed to show access dialog: GDBus.Error:org.freedesktop.DBus.Error.AccessDenied: GDBus.Error:org.freedesktop.DBus.Error.AccessDenied: Only the focused app is allowed to show a system access dialog
2026-01-09T23:25:22.775166+00:00 rocinante org.flameshot.Flameshot.desktop[1583748]: flameshot: error: Unable to capture screen
2026-01-09T23:25:22.781806+00:00 rocinante org.flameshot.Flameshot.desktop[1583748]: flameshot: error: Unable to capture screen
2026-01-09T23:25:28.251691+00:00 rocinante NetworkManager[1926]: <info> [1768001128.2513] dhcp4 (wlp0s20f3): state changed new lease, address=10.11.12.152
2026-01-09T23:25:28.252204+00:00 rocinante dbus-daemon[1792]: [system] Activating via systemd: service name='org.freedesktop.nm_dispatcher' unit='dbus-org.freedesktop.nm-dispatcher.service' requested by ':1.10' (uid=0 pid=1926 comm="/usr/sbin/NetworkManager --no-daemon" label="unconfined")
2026-01-09T23:25:28.255012+00:00 rocinante systemd[1]: Starting NetworkManager-dispatcher.service - Network Manager Script Dispatcher Service...
2026-01-09T23:25:28.268279+00:00 rocinante dbus-daemon[1792]: [system] Successfully activated service 'org.freedesktop.nm_dispatcher'
2026-01-09T23:25:28.268881+00:00 rocinante systemd[1]: Started NetworkManager-dispatcher.service - Network Manager Script Dispatcher Service.
2026-01-09T23:25:38.280073+00:00 rocinante systemd[1]: NetworkManager-dispatcher.service: Deactivated successfully.
2026-01-09T23:25:47.789326+00:00 rocinante xdg-desktop-portal-gnome[3803]: Failed to associate portal window with parent window
2026-01-09T23:25:47.790941+00:00 rocinante /usr/libexec/xdg-desktop-portal[3770]: Failed to show access dialog: GDBus.Error:org.freedesktop.DBus.Error.AccessDenied: GDBus.Error:org.freedesktop.DBus.Error.AccessDenied: Only the focused app is allowed to show a system access dialog
2026-01-09T23:25:47.800573+00:00 rocinante org.flameshot.Flameshot.desktop[1583748]: flameshot: error: Unable to capture screen
I suspect this is probably similar to the issue with gnome-screenshot but it may be different.
ProblemType: Bug
DistroRelease: Ubuntu 25.10
Package: flameshot 12.1.0+ds-2
ProcVersionSignature: Ubuntu 6.17.0-8.8-generic 6.17.2
Uname: Linux 6.17.0-8-generic x86_64
ApportVersion: 2.33.1-0ubuntu3
Architecture: amd64
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Fri Jan 9 18:26:15 2026
InstallationDate: Installed on 2025-12-12 (28 days ago)
InstallationMedia: Ubuntu 25.04 "Plucky Puffin" - Daily amd64 (20250306)
ProcEnviron:
LANG=en_US.UTF-8
PATH=(custom, no user)
SHELL=/usr/bin/bash
TERM=screen-256color
XDG_RUNTIME_DIR=<set>
SourcePackage: flameshot
UpgradeStatus: Upgraded to questing on 2025-12-12 (28 days ago)
