Thorsten - you can workaround a few different ways. For me, it's a pain because I move from a proxy-only to a non-proxy environment as I move my workstation around.
Workarounds: 1. set the http_proxy, https_proxy, ftp_proxy environment variables in root's environment, reboot. 2. prefix any apt command with the variables,ie sudo http_proxy='http://[username]:[password]@[webproxy]:[port]' apt update sudo http_proxy='http://[username]:[password]@[webproxy]:[port]' apt upgrade sudo http_proxy='http://[username]:[password]@[webproxy]:[port]' apt install [package] Hope that helps. Proxy issues have been appearing on and off in Ubuntu for a long time (9.x). They usually get sorted out eventually. etc -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-control-center in Ubuntu. https://bugs.launchpad.net/bugs/1730672 Title: Proxy settings not applied system-wide, are not used by Software Update or apt Status in gnome-control-center package in Ubuntu: Confirmed Bug description: The Network Proxy settings available under Settings/Network are not applied system wide. Unlike 16.x, there is no "apply system wide" setting. Setting a proxy here: - does not modify /etc/environment - does not set root's http_proxy, https_proxy, ftp_proxy environment variables This means that apt and Software Updates do not receive the proxy settings, and package checks/updates/installs fail. workaround: sudo http_proxy='http://[username]:[password]@[webproxy]:[port]' apt update etc To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-control-center/+bug/1730672/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
