jan@jan-System-Product-Name:~$ sudo apt-get autoremove [sudo] password for jan: Reading package lists... Done Building dependency tree Reading state information... Done The following packages will be REMOVED: 0ad-data 0ad-data-common fonts-texgyre libboost-filesystem1.58.0 libboost-system1.58.0 libenet7 libgloox13v5 libgloox14 libjavascriptcoregtk-1.0-dev libnvtt2 libsdl2-2.0-0 libwebkitgtk-1.0-0 libwebkitgtk-dev libwildmidi1 libwxbase3.0-0v5 libwxgtk3.0-0v5 0 upgraded, 0 newly installed, 16 to remove and 0 not upgraded. After this operation, 1,611 MB disk space will be freed. Do you want to continue? [Y/n] y (Reading database ... 265537 files and directories currently installed.) Removing 0ad-data (0.0.20-1) ... Removing 0ad-data-common (0.0.20-1) ... Removing fonts-texgyre (20160520-1) ... Removing libboost-filesystem1.58.0:i386 (1.58.0+dfsg-5ubuntu3.1) ... Removing libboost-system1.58.0:i386 (1.58.0+dfsg-5ubuntu3.1) ... Removing libenet7:i386 (1.3.12+ds-2) ... Removing libgloox13v5:i386 (1.0.13-3build1) ... Removing libgloox14:i386 (1.0.15-2) ... Removing libwebkitgtk-dev:i386 (2.4.11-3) ... Removing libjavascriptcoregtk-1.0-dev:i386 (2.4.11-3) ... Removing libnvtt2:i386 (2.0.8-1+dfsg-8.1) ... Removing libsdl2-2.0-0:i386 (2.0.4+dfsg2-1ubuntu1) ... Removing libwebkitgtk-1.0-0:i386 (2.4.11-3) ... Removing libwildmidi1:i386 (0.3.8-2) ... Removing libwxgtk3.0-0v5:i386 (3.0.2+dfsg-2) ... Removing libwxbase3.0-0v5:i386 (3.0.2+dfsg-2) ... Processing triggers for libc-bin (2.24-3ubuntu1) ... Processing triggers for fontconfig (2.11.94-0ubuntu2) ... jan@jan-System-Product-Name:~$ sudo apt update Hit:1 http://ubuntu.mirror.neology.co.za/ubuntu yakkety InRelease Hit:2 http://ppa.launchpad.net/nilarimogard/webupd8/ubuntu xenial InRelease Ign:3 http://dl.google.com/linux/earth/deb stable InRelease Hit:4 http://dl.google.com/linux/earth/deb stable Release Ign:6 https://download.01.org/gfx/ubuntu/16.04/main xenial InRelease Err:7 https://download.01.org/gfx/ubuntu/16.04/main xenial Release 504 Gateway Time-out Reading package lists... Done E: The repository 'https://download.01.org/gfx/ubuntu/16.04/main xenial Release' does no longer have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details.