Same here, I was experiencing this problem (on 16.04 xenial) each time I ran 'sudo apt update' or any apt commands.
Fixed by installing 'packagekit'. Not even sure what that does, but it must have done something because the error is gone now -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to packagekit in Ubuntu. https://bugs.launchpad.net/bugs/613412 Title: packagekit in maverick causes error in apt operations Status in packagekit package in Ubuntu: Fix Released Status in packagekit source package in Maverick: Fix Released Bug description: Binary package hint: packagekit i upgraded in maverick today and suddenly i got these errors at the end of all apt operations (e.g. apt-get update etc.) Hit http://archive.ubuntu.com maverick-updates/restricted i386 Packages Error org.freedesktop.DBus.Error.Spawn.ChildExited: Launch helper exited with unknown return code 1 Reading package lists... Done removing packagkit and the apt backend for it, fixed it. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/packagekit/+bug/613412/+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
