Ошибка при загрузке информации об источниках приложений

[Nillka]

Первый раз пользуюсь Ubuntu, зашел в программы и обновления, решил сделать обновление и вышла такая ошибка:

Ошибка при загрузке информации об источниках приложений

W:Target Sources (partner/source/Sources) is configured multiple times in /etc/apt/sources.list:54 and /etc/apt/sources.list:55, W:Target Sources (partner/source/Sources) is configured multiple times in /etc/apt/sources.list:54 and /etc/apt/sources.list:56, W:The repository 'cdrom://Ubuntu 16.04.1 LTS _Xenial Xerus_ - Release amd64 (20160719) xenial Release' does not have a Release file., W:Data from such a repository can't be authenticated and is therefore potentially dangerous to use., W:See apt-secure( manpage for repository creation and user configuration details., E:Failed to fetch cdrom://Ubuntu 16.04.1 LTS _Xenial Xerus_ - Release amd64 (20160719)/dists/xenial/main/binary-amd64/Packages  Please use apt-cdrom to make this CD-ROM recognized by APT. apt-get update cannot be used to add new CD-ROMs, E:Some index files failed to download. They have been ignored, or old ones used instead.
ТС не появлялся на Форуме более полугода по состоянию на 14/07/2019 (последняя явка: 17/02/2017). Модератором раздела принято решение закрыть тему.
--zg_nico

[Pilot6]

У вас там помойка в /etc/apt/sources.list. Бездумно выполняли команды из сети. Выложите этот файл сюда под спойлер. Почистим.

[Nillka]

просто первую ссылку по настройке Ubuntu открыл и начал делать все подряд, что там написано

(Нажмите, чтобы показать/скрыть)

deb cdrom:[Ubuntu 16.04.1 LTS _Xenial Xerus_ - Release amd64 (20160719)]/ xenial main restricted

# See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to
# newer versions of the distribution.
deb http://archive.ubuntu.com/ubuntu xenial main restricted
# deb-src http://kz.archive.ubuntu.com/ubuntu/ xenial main restricted

## Major bug fix updates produced after the final release of the
## distribution.
deb http://archive.ubuntu.com/ubuntu xenial-updates main restricted
# deb-src http://kz.archive.ubuntu.com/ubuntu/ xenial-updates main restricted

## 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
## universe WILL NOT receive any review or updates from the Ubuntu security
## team.
deb http://archive.ubuntu.com/ubuntu xenial universe
# deb-src http://kz.archive.ubuntu.com/ubuntu/ xenial universe
deb http://archive.ubuntu.com/ubuntu xenial-updates universe
# deb-src http://kz.archive.ubuntu.com/ubuntu/ xenial-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://archive.ubuntu.com/ubuntu xenial multiverse
# deb-src http://kz.archive.ubuntu.com/ubuntu/ xenial multiverse
deb http://archive.ubuntu.com/ubuntu xenial-updates multiverse
# deb-src http://kz.archive.ubuntu.com/ubuntu/ xenial-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://archive.ubuntu.com/ubuntu xenial-backports main restricted universe multiverse
# deb-src http://kz.archive.ubuntu.com/ubuntu/ xenial-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 xenial partner
# deb-src http://archive.canonical.com/ubuntu xenial partner

deb http://archive.ubuntu.com/ubuntu xenial-security main restricted
# deb-src http://security.ubuntu.com/ubuntu xenial-security main restricted
deb http://archive.ubuntu.com/ubuntu xenial-security universe
# deb-src http://security.ubuntu.com/ubuntu xenial-security universe
deb http://archive.ubuntu.com/ubuntu xenial-security multiverse
# deb http://archive.canonical.com/ xenial partner
# deb-src http://archive.canonical.com/ xenial partner
# deb-src http://archive.canonical.com/ xenial partner
# deb-src http://archive.canonical.com/ xenial partner
# deb-src http://security.ubuntu.com/ubuntu xenial-security multiverse

[symon.2014]

deb cdrom:[Ubuntu 16.04.1 LTS _Xenial Xerus_ - Release amd64 (20160719)]/ xenial main restricted
закомментировать  #

[Pilot6]

Ну и xenial partner несколько раз прописано. Вот и ругается.

[symon.2014]

Pilot6, они все с комментами

[Pilot6]

ruslinux,
Есть подозрение, что ТС уже закомментировал их. Но все равно зачем эти повторы?

[symon.2014]

Pilot6, вроде сейчас всё в /sources.list.d/official-packages.list , может там ещё бардак.

[Pilot6]

вроде сейчас всё в /sources.list.d/official-packages.list

Это у вас, батенька, какая-то сборка. Нет такого в Ubuntu.