I have no idea if this is a bug or a misconfiguration on my end so please forgive me if this bug report is useless. I have firejail and apparmor configured in my system to automatically sandbox a lot of programs. The problem is that if I try to take a screenshot Spectacle doesn't work. STEPS TO REPRODUCE 1. Install and configure firejail (firecfg) 2. Try to take a screenshot OBSERVED RESULT Spectacle appears with error message "Could not take a screenshot. Please report this bug here: create a spectacle bug" EXPECTED RESULT Spectacle takes a screenshot SOFTWARE/OS VERSIONS Windows: macOS: Linux/KDE Plasma: (available in About System) KDE Plasma Version: 5.24.5 KDE Frameworks Version: 5.94.0 Qt Version: ADDITIONAL INFORMATION If I start spectacle from a terminal this is what appears: Reading profile /etc/firejail/spectacle.profile Reading profile /etc/firejail/disable-common.inc Reading profile /etc/firejail/disable-devel.inc Reading profile /etc/firejail/disable-exec.inc Reading profile /etc/firejail/disable-interpreters.inc Reading profile /etc/firejail/disable-programs.inc Reading profile /etc/firejail/disable-xdg.inc Reading profile /etc/firejail/whitelist-common.inc Reading profile /etc/firejail/whitelist-runuser-common.inc Reading profile /etc/firejail/whitelist-usr-share-common.inc Reading profile /etc/firejail/whitelist-var-common.inc Parent pid 33635, child pid 33638 1 program installed in 1.86 ms Warning: skipping alternatives for private /etc Private /etc installed in 4.95 ms Private /usr/etc installed in 0.00 ms Warning: cleaning all supplementary groups Warning: cleaning all supplementary groups Warning: /sbin directory link was not blacklisted Warning: /usr/sbin directory link was not blacklisted Blacklist violations are logged to syslog Warning: cleaning all supplementary groups Child process initialized in 107.68 ms Couldn't start kglobalaccel from org.kde.kglobalaccel.service: QDBusError("org.freedesktop.DBus.Error.ServiceUnknown", "org.freedesktop.DBus.Error.ServiceUnknown") Error querying plasma version "org.freedesktop.DBus.Error.ServiceUnknown" "org.freedesktop.DBus.Error.ServiceUnknown" Error querying plasma version "org.freedesktop.DBus.Error.ServiceUnknown" "org.freedesktop.DBus.Error.ServiceUnknown" Error querying plasma version "org.freedesktop.DBus.Error.ServiceUnknown" "org.freedesktop.DBus.Error.ServiceUnknown" Error querying plasma version "org.freedesktop.DBus.Error.ServiceUnknown" "org.freedesktop.DBus.Error.ServiceUnknown" Error querying plasma version "org.freedesktop.DBus.Error.ServiceUnknown" "org.freedesktop.DBus.Error.ServiceUnknown" kf.config.core: Couldn't write "/home/myname/.config/spectaclerc" . Disk full? Error calling KWin DBus interface: "org.freedesktop.DBus.Error.ServiceUnknown" "org.freedesktop.DBus.Error.ServiceUnknown" libEGL warning: wayland-egl: could not open /dev/dri/renderD128 (No such file or directory) qt.qpa.wayland: Wayland does not support QWindow::requestActivate() qt.qpa.wayland: Wayland does not support QWindow::requestActivate() QPixmap::scaled: Pixmap is a null pixmap "applications.menu" not found in ()
Pretty sure it's a misconfiguration. Spectacle's DBus call to KWin (which supplies the screenshot data) is being blocked. You'll have to figure out what it is and unblock it.