The hp-systray command is commonly started as part of the session's autostart; for example, in Debian.
When it doesn't find a system tray on the current environment, it displays an error dialog box. This is the case of GNOME which has dropped support for the system tray functionality in favour of a unified "notifications" functionality, pushing developers to quit relying on a system tray. This comes from hplip/ui4/systemtray.py where QSystemTrayIcon.isSystemTrayAvailable() returns False when run under GNOME. Solutions I see: - Change the /etc/xdg/autostart/hplip-systray.desktop and add a property (NotShowIn, see https://specifications.freedesktop.org/menu-spec/latest/ar01s03.html) to not start in GNOME. It simply means adding this line: NotShowIn=GNOME; - Change the hplip code to fail silently if it detects that there is no system tray. This might hide real issues however. - Add a new dedicated binary package for hplip-gui-systray, and do not install it by default, especially for GNOME users. - Understand the functionality of hp-systray and implement an alternative using GNOME's notifications; choose it when running in GNOME. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1714659 Title: HPLIP is not compatible with modern GNOME (No system tray detected on this system. Unable to start, exiting.) To manage notifications about this bug go to: https://bugs.launchpad.net/hplip/+bug/1714659/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
