今天从 16.04 更新到 18.04 再到 20.04，最后更新到 22.04。直到最后一次更新之前一切都很好。
现在我的 apt-get update 出现错误，无法安装任何东西。
marcus@nts-server:/tmp$ sudo apt-get update
Ign:1 http ://se.archive.ubuntu.com/ubuntu jammy InRelease
Ign:2 http ://security.ubuntu.com/ubuntu jammy-security InRelease
Ign:3 http ://se.archive.ubuntu.com/ubuntu jammy-updates InRelease
Ign:4 http ://se.archive.ubuntu.com/ubuntu jammy-backports InRelease
Ign:2 http ://security.ubuntu.com/ubuntu jammy-security InRelease
Ign:1 http ://se.archive.ubuntu.com/ubuntu jammy InRelease
Ign:3 http ://se.archive.ubuntu.com/ubuntu jammy-updates InRelease
Ign:4 http ://se.archive.ubuntu.com/ubuntu jammy-backports InRelease
Ign:1 http ://se.archive.ubuntu.com/ubuntu jammy InRelease
Ign:2 http ://security.ubuntu.com/ubuntu jammy-security InRelease
Ign:3 http ://se.archive.ubuntu.com/ubuntu jammy-updates InRelease
Ign:4 http ://se.archive.ubuntu.com/ubuntu jammy-backports InRelease
Fel:2 http ://security.ubuntu.com/ubuntu jammy-security InRelease
Temporärt fel vid uppslagning av ”security.ubuntu.com”
Fel:1 http ://se.archive.ubuntu.com/ubuntu jammy InRelease
Temporärt fel vid uppslagning av ”se.archive.ubuntu.com”
Fel:3 http ://se.archive.ubuntu.com/ubuntu jammy-updates InRelease
Temporärt fel vid uppslagning av ”se.archive.ubuntu.com”
Fel:4 http ://se.archive.ubuntu.com/ubuntu jammy-backports InRelease
Temporärt fel vid uppslagning av ”se.archive.ubuntu.com”
Läser paketlistor… Färdig
W: Misslyckades med att hämta http ://se.archive.ubuntu.com/ubuntu/dists/jammy/InRelease Temporärt fel vid uppslagning av ”se.archive.ubuntu.com”
W: Misslyckades med att hämta http ://se.archive.ubuntu.com/ubuntu/dists/jammy-updates/InRelease Temporärt fel vid uppslagning av ”se.archive.ubuntu.com”
W: Misslyckades med att hämta http ://se.archive.ubuntu.com/ubuntu/dists/jammy-backports/InRelease Temporärt fel vid uppslagning av ”se.archive.ubuntu.com”
W: Misslyckades med att hämta http ://security.ubuntu.com/ubuntu/dists/jammy-security/InRelease Temporärt fel vid uppslagning av ”security.ubuntu.com”
W: Vissa indexfiler kunde inte hämtas. De har ignorerats eller så har de gamla använts istället.
有什么解决办法吗？
cat /etc/apt/sources.list 的输出
marcus@nts-server:~$ cat /etc/apt/sources.list
#
# deb cdrom:[Ubuntu-Server 16.04.1 LTS _Xenial Xerus_ - Release amd64 (20160719)]/ xenial main restricted
# deb cdrom:[Ubuntu-Server 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://se.archive.ubuntu.com/ubuntu/ jammy main restricted
# deb-src http://se.archive.ubuntu.com/ubuntu/ xenial main restricted
## Major bug fix updates produced after the final release of the
## distribution.
deb http://se.archive.ubuntu.com/ubuntu/ jammy-updates main restricted
# deb-src http://se.archive.ubuntu.com/ubuntu/ xenial-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://se.archive.ubuntu.com/ubuntu/ jammy universe
# deb-src http://se.archive.ubuntu.com/ubuntu/ xenial universe
deb http://se.archive.ubuntu.com/ubuntu/ jammy-updates universe
# deb-src http://se.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://se.archive.ubuntu.com/ubuntu/ jammy multiverse
# deb-src http://se.archive.ubuntu.com/ubuntu/ xenial multiverse
deb http://se.archive.ubuntu.com/ubuntu/ jammy-updates multiverse
# deb-src http://se.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://se.archive.ubuntu.com/ubuntu/ jammy-backports main restricted universe multiverse
# deb-src http://se.archive.ubuntu.com/ubuntu/ xenial-backports main restricted universe multiverse
deb http://security.ubuntu.com/ubuntu jammy-security main restricted
# deb-src http://security.ubuntu.com/ubuntu xenial-security main restricted
deb http://security.ubuntu.com/ubuntu jammy-security universe
# deb-src http://security.ubuntu.com/ubuntu xenial-security universe
deb http://security.ubuntu.com/ubuntu jammy-security multiverse
# deb-src http://security.ubuntu.com/ubuntu xenial-security multiverse
# deb http://download.webmin.com/download/repository sarge contrib # inaktiverad vid uppgradering till bionic
# deb http://webmin.mirror.somersettechsolutions.co.uk/repository sarge contrib # inaktiverad vid uppgradering till bionic