@Julian Andres Klode (juliank) It was clean fresh installation from official fresh ISO. Here is sources.list. I did not touch it.
mate1710@mate1710:~$ cat /etc/apt/sources.list # deb cdrom:[Ubuntu-MATE 17.10 _Artful Aardvark_ - Release i386 (20171018)]/ artful main multiverse restricted universe deb http://archive.ubuntu.com/ubuntu/ artful main restricted universe multiverse deb http://security.ubuntu.com/ubuntu/ artful-security main restricted universe multiverse deb http://archive.ubuntu.com/ubuntu/ artful-updates main restricted universe multiverse # See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to # newer versions of the distribution. deb http://ru.archive.ubuntu.com/ubuntu/ artful main restricted # deb-src http://ru.archive.ubuntu.com/ubuntu/ artful main restricted ## Major bug fix updates produced after the final release of the ## distribution. deb http://ru.archive.ubuntu.com/ubuntu/ artful-updates main restricted # deb-src http://ru.archive.ubuntu.com/ubuntu/ artful-updates main restricted ## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu ## team. Also, please note that software in universe WILL NOT receive any ## review or updates from the Ubuntu security team. deb http://ru.archive.ubuntu.com/ubuntu/ artful universe # deb-src http://ru.archive.ubuntu.com/ubuntu/ artful universe deb http://ru.archive.ubuntu.com/ubuntu/ artful-updates universe # deb-src http://ru.archive.ubuntu.com/ubuntu/ artful-updates universe ## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu ## team, and may not be under a free licence. Please satisfy yourself as to ## your rights to use the software. Also, please note that software in ## multiverse WILL NOT receive any review or updates from the Ubuntu ## security team. deb http://ru.archive.ubuntu.com/ubuntu/ artful multiverse # deb-src http://ru.archive.ubuntu.com/ubuntu/ artful multiverse deb http://ru.archive.ubuntu.com/ubuntu/ artful-updates multiverse # deb-src http://ru.archive.ubuntu.com/ubuntu/ artful-updates multiverse ## N.B. software from this repository may not have been tested as ## extensively as that contained in the main release, although it includes ## newer versions of some applications which may provide useful features. ## Also, please note that software in backports WILL NOT receive any review ## or updates from the Ubuntu security team. deb http://ru.archive.ubuntu.com/ubuntu/ artful-backports main restricted universe multiverse # deb-src http://ru.archive.ubuntu.com/ubuntu/ artful-backports main restricted universe multiverse ## Uncomment the following two lines to add software from Canonical's ## 'partner' repository. ## This software is not part of Ubuntu, but is offered by Canonical and the ## respective vendors as a service to Ubuntu users. # deb http://archive.canonical.com/ubuntu artful partner # deb-src http://archive.canonical.com/ubuntu artful partner deb http://security.ubuntu.com/ubuntu artful-security main restricted # deb-src http://security.ubuntu.com/ubuntu artful-security main restricted deb http://security.ubuntu.com/ubuntu artful-security universe # deb-src http://security.ubuntu.com/ubuntu artful-security universe deb http://security.ubuntu.com/ubuntu artful-security multiverse # deb-src http://security.ubuntu.com/ubuntu artful-security multiverse It's not my fault. Should we inform Ubuntu MATE developers? -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to apt in Ubuntu. https://bugs.launchpad.net/bugs/1697120 Title: artful's apt-file and aptitude complains about Ubuntu sources.list Status in ubuntu-mate: New Status in apt package in Ubuntu: Fix Released Status in apt source package in Zesty: Fix Committed Status in apt package in Debian: Fix Released Bug description: [Impact] apt-file is now difficult to use with about a dozen warnings like this: W: Target Contents-deb-legacy (Contents-amd64) is configured multiple times in /etc/apt/sources.list:6 and /etc/apt/sources.list:17 For reference, this is line 6: deb http://us.archive.ubuntu.com/ubuntu/ artful main restricted And this is line 17: deb http://us.archive.ubuntu.com/ubuntu/ artful universe This is how Ubuntu's default sources.list has been structured since the beginning? (or at least more than a decade). What I expect ------------- The warning isn't specific enough. Lines 6 and 17 are not actually duplicates. The warning could be removed or fixed so that it doesn't complain about non-duplicates. Or the warning could be disabled on Ubuntu. See also -------- LP: #1579372 [Test case] Install apt-file and update, make sure that the warnings are gone. [Regression potential] Warnings about duplicate index targets containing "legacy" in their configured name are not shown anymore, thus it's harder to "fix" servers. But apart from that, which was the goal, I don't see any. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-mate/+bug/1697120/+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