vatolin@ubuntubuk:~$ sudo apt update
[sudo] Passwort für vatolin:
OK:1 http://archive.canonical.com/ubuntu bionic InRelease
Holen:2 http://security.ubuntu.com/ubuntu bionic-security InRelease [88,7 kB]
OK:3 http://de.archive.ubuntu.com/ubuntu bionic InRelease
Ign:4 http://ppa.launchpad.net/robert-ancell/sane-backends/ubuntu bionic InRelease
OK:5 http://de.archive.ubuntu.com/ubuntu bionic-updates InRelease
Fehl:6 http://ppa.launchpad.net/robert-ancell/sane-backends/ubuntu bionic Release
404 Not Found [IP: 91.189.95.83 80]
OK:7 http://de.archive.ubuntu.com/ubuntu bionic-backports InRelease
OK:8 https://updates.signal.org/desktop/apt xenial InRelease
Paketlisten werden gelesen... Fertig
E: Das Depot »http://ppa.launchpad.net/robert-ancell/sane-backends/ubuntu bionic Release« enthält keine Release-Datei.
N: Eine Aktualisierung von solch einem Depot kann nicht auf eine sichere Art durchgeführt werden, daher ist es standardmäßig deaktiviert.
N: Weitere Details zur Erzeugung von Paketdepots sowie zu deren Benutzerkonfiguration finden Sie in der Handbuchseite apt-secure(8).
vatolin@ubuntubuk:~$ cat /etc/apt/sources.list
# deb cdrom:[Ubuntu 18.04.1 LTS _Bionic Beaver_ - Release amd64 (20180725)]/ bionic main restricted
# See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to
# newer versions of the distribution.
deb http://de.archive.ubuntu.com/ubuntu/ bionic main restricted
# deb-src http://de.archive.ubuntu.com/ubuntu/ bionic main restricted
## Major bug fix updates produced after the final release of the
## distribution.
deb http://de.archive.ubuntu.com/ubuntu/ bionic-updates main restricted
# deb-src http://de.archive.ubuntu.com/ubuntu/ bionic-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://de.archive.ubuntu.com/ubuntu/ bionic universe
# deb-src http://de.archive.ubuntu.com/ubuntu/ bionic universe
deb http://de.archive.ubuntu.com/ubuntu/ bionic-updates universe
# deb-src http://de.archive.ubuntu.com/ubuntu/ bionic-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://de.archive.ubuntu.com/ubuntu/ bionic multiverse
# deb-src http://de.archive.ubuntu.com/ubuntu/ bionic multiverse
deb http://de.archive.ubuntu.com/ubuntu/ bionic-updates multiverse
# deb-src http://de.archive.ubuntu.com/ubuntu/ bionic-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://de.archive.ubuntu.com/ubuntu/ bionic-backports main restricted universe multiverse
# deb-src http://de.archive.ubuntu.com/ubuntu/ bionic-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 bionic partner
# deb-src http://archive.canonical.com/ubuntu bionic partner
deb http://security.ubuntu.com/ubuntu bionic-security main restricted
# deb-src http://security.ubuntu.com/ubuntu bionic-security main restricted
deb http://security.ubuntu.com/ubuntu bionic-security universe
# deb-src http://security.ubuntu.com/ubuntu bionic-security universe
deb http://security.ubuntu.com/ubuntu bionic-security multiverse
# deb-src http://security.ubuntu.com/ubuntu bionic-security multiverse
vatolin@ubuntubuk:~$ ls -la /etc/apt/sources.list.d
insgesamt 24
drwxr-xr-x 2 root root 4096 Jan 27 21:20 .
drwxr-xr-x 7 root root 4096 Mär 27 20:57 ..
-rw-r--r-- 1 root root 240 Jan 27 21:38 robert-ancell-ubuntu-sane-backends-bionic.list
-rw-r--r-- 1 root root 240 Jan 27 21:38 robert-ancell-ubuntu-sane-backends-bionic.list.save
-rw-r--r-- 1 root root 68 Jan 27 21:38 signal-xenial.list
-rw-r--r-- 1 root root 68 Jan 27 21:38 signal-xenial.list.save