This never would have worked, as the mir demos do not have .desktop files for them. Also App IDs cannot have _ in the appname or package name portion of the ID, as it is a separator. The format for App IDs is "${packagename}_${appname}_${version}" and so _ is not a valid character.
If you want to launch these apps via ubuntu-app-launch, then they need to have .desktop files named as "mir-demo-client-egltriangle.desktop" for your example, then you could do "ubuntu-app-launch mir-demo-client- egltriangle" and it would work. You can only run applications with ubuntu-app-launch which appear in the list output by ubuntu-app-launch-appids. ** Changed in: ubuntu-app-launch (Ubuntu) Status: Confirmed => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1654915 Title: [regression] ubuntu-app-launch doesn't launch apps any more To manage notifications about this bug go to: https://bugs.launchpad.net/canonical-devices-system-image/+bug/1654915/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs