trying to upgrade to ubuntu 22

[Diane Magnin]

using ubuntu 20.04.4
trying to upgrade to ubuntu 22

sudo RELEASE_UPGRADER_ALLOW_THIRD_PARTY=1 do-release-upgrade
Checking for a new Ubuntu release
Get:1 Upgrade tool signature [819 B]
Get:2 Upgrade tool [1,267 kB]
Fetched 1,268 kB in 0s (0 B/s)
authenticate 'jammy.tar.gz' against 'jammy.tar.gz.gpg'
extracting 'jammy.tar.gz'

Reading cache

Checking package manager
Reading package lists... Done
Building dependency tree
Reading state information... Done
Get:1 file:/var/cuda-repo-ubuntu2004-11-5-local InRelease
Ign file:/var/cuda-repo-ubuntu2004-11-5-local InRelease
Get:2 file:/var/cuda-repo-ubuntu2004-11-5-local Release [564 B]
Get:3 file:/var/cuda-repo-ubuntu2004-11-5-local Release [564 B]
Hit http://ppa.launchpad.net/peek-developers/daily/ubuntu focal InRelease
Hit http://lenovo.archive.canonical.com focal InRelease
Hit http://archive.canonical.com/ubuntu focal InRelease
Hit https://desktop-download.mendeley.com/download/apt stable InRelease
Hit https://packages.microsoft.com/repos/ms-teams stable InRelease
Hit http://ubuntu.snet.uz/ubuntu focal InRelease
Hit http://repo.ros2.org/ubuntu/main focal InRelease
Hit http://ubuntu.snet.uz/ubuntu focal-updates InRelease
Hit https://download.sublimetext.com apt/dev/ InRelease
Hit http://ubuntu.snet.uz/ubuntu focal-backports InRelease
Hit http://packages.ros.org/ros/ubuntu focal InRelease
Hit http://ubuntu.snet.uz/ubuntu focal-security InRelease
Fetched 0 B in 0s (0 B/s)
Reading package lists... Done
Building dependency tree
Reading state information... Done

The Robot Operating System (ROS) is installed

It appears that ROS is currently installed. Each ROS release is very
strict about the versions of Ubuntu it supports, and Ubuntu upgrades
can fail if that guidance isn't followed. Before continuing, please
either uninstall ROS, or ensure the ROS release you have installed
supports the version of Ubuntu to which you're upgrading.

For ROS 1 releases, refer to REP 3:
https://www.ros.org/reps/rep-0003.html

For ROS 2 releases, refer to REP 2000:
https://www.ros.org/reps/rep-2000.html

Are you sure you want to continue?

Continue [yN] y
nvidia-driver-495

Checking for installed snaps

Calculating snap size requirements

Updating repository information

Third party sources disabled

Some third party entries in your sources.list were disabled. You can
re-enable them after the upgrade with the 'software-properties' tool
or your package manager.

To continue please press [ENTER]

Get:1 file:/var/cuda-repo-ubuntu2004-11-5-local InRelease
Ign file:/var/cuda-repo-ubuntu2004-11-5-local InRelease
Get:2 file:/var/cuda-repo-ubuntu2004-11-5-local Release [564 B]
Get:3 file:/var/cuda-repo-ubuntu2004-11-5-local Release [564 B]
Hit http://lenovo.archive.canonical.com jammy InRelease
Hit https://desktop-download.mendeley.com/download/apt stable InRelease
Hit https://packages.microsoft.com/repos/ms-teams stable InRelease
Hit https://download.sublimetext.com apt/dev/ InRelease
Get:4 http://repo.ros2.org/ubuntu/main jammy InRelease [4,670 B]
Get:5 http://repo.ros2.org/ubuntu/main jammy/main arm64 Packages [662 kB]
Get:6 http://repo.ros2.org/ubuntu/main jammy/main amd64 Packages [679 kB]
Fetched 1,345 kB in 0s (0 B/s)

Checking package manager
Reading package lists... Done
Building dependency tree
Reading state information... Done

Invalid package information

After updating your package information, the essential package
'ubuntu-minimal' could not be located. This may be because you have
no official mirrors listed in your software sources, or because of
excessive load on the mirror you are using. See /etc/apt/sources.list
for the current list of configured software sources.
In the case of an overloaded mirror, you may want to try the upgrade
again later.

Restoring original system state

Aborting
Reading package lists... Done
Building dependency tree
Reading state information... Done

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: ubuntu-release-upgrader-core 1:20.04.38 [origin: unknown]
ProcVersionSignature: Ubuntu 5.15.0-43.46~20.04.1-generic 5.15.39
Uname: Linux 5.15.0-43-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.24
Architecture: amd64
CasperMD5CheckResult: skip
CrashDB: ubuntu
Date: Tue Aug 23 16:30:38 2022
InstallationDate: Installed on 2021-11-10 (286 days ago)
InstallationMedia: Ubuntu 20.04.3 LTS "Focal Fossa" - Release amd64 (20210819)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to focal on 2022-08-23 (0 days ago)
VarLogDistupgradeAptlog:
 Log time: 2022-08-23 16:30:01.278471
 Log time: 2022-08-23 16:30:04.285233
 Log time: 2022-08-23 16:30:37.760288
 Log time: 2022-08-23 16:30:40.513355

[Nick Rosbrook (enr0n)]

The mirror you have selected (http://ubuntu.snet.uz/ubuntu/dists/) does not have information about the jammy release:

2022-08-23 16:30:17,642 DEBUG examining: 'deb-src http://ubuntu.snet.uz/ubuntu/ focal main restricted #Added by software-properties'
2022-08-23 16:30:17,643 DEBUG verifySourcesListEntry: deb-src http://ubuntu.snet.uz/ubuntu/ jammy main restricted #Added by software-properties
2022-08-23 16:30:17,643 DEBUG url_downloadable: http://ubuntu.snet.uz/ubuntu//dists/jammy/Release
2022-08-23 16:30:17,643 DEBUG s='http' n='ubuntu.snet.uz' p='/ubuntu//dists/jammy/Release' q='' f=''
2022-08-23 16:30:17,951 DEBUG error from httplib: 'HTTP Error 404: Not Found'

Please choose a different mirror of the Ubuntu archive and then try the upgrade again.

[Launchpad Janitor (janitor)]

[Expired for ubuntu-release-upgrader (Ubuntu) because there has been no activity for 60 days.]