It would appear the issue is that a gdebi instance opened from the context menu on a desktop item is unable to do any action on any .deb file located anywhere. In other words it's doomed to fail upon simply opening.
Can be easily seen by opening gdebi-gtk as described but then switching to another .deb somewhere else from gdebi's open menu item. This will also fail. gdebi-gtk opened from app menu has no issues acting on a .deb from anywhere inc. the desktop -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to gdebi in Ubuntu. https://bugs.launchpad.net/bugs/1807761 Title: Unable to install deb-file stored on Desktop (which is controlled by nautilus-desktop) with GDebi Status in gdebi package in Ubuntu: Confirmed Status in nautilus package in Ubuntu: Confirmed Bug description: Steps to reproduce: 1. Install Ubuntu 18.04 LTS or Ubuntu 18.10 2. Download some deb-file to the desktop - for with help of terminal: cd ~/Desktop apt-get download meld 3. Install GDebi package installer with sudo apt install gdebi 4. Select deb-file on desktop, make right click on it, select *Open With Other Application* select *GDebi Package Installer*, click *Select*, in opened window select *Install Package* Expected results: * GDebi asks user (sudo-able) password and installs the package Actual results: * GDebi do not ask user for password and do not install the package Notes: * first seen on AskUbuntu ( https://askubuntu.com/q/1099387/66509 ) * you can view my screencast to get first person view :) ProblemType: Bug DistroRelease: Ubuntu 18.10 Package: nautilus 1:3.26.4-0ubuntu7 ProcVersionSignature: Ubuntu 4.18.0-12.13-generic 4.18.17 Uname: Linux 4.18.0-12-generic x86_64 ApportVersion: 2.20.10-0ubuntu13.1 Architecture: amd64 CurrentDesktop: ubuntu:GNOME Date: Mon Dec 10 23:14:16 2018 GsettingsChanges: SourcePackage: nautilus UpgradeStatus: No upgrade log present (probably fresh install) usr_lib_nautilus: To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdebi/+bug/1807761/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp