Upgraded 16.10 to 18.04, can't install any software.

[fall2]

After the upgrade Synaptic packet manager doesn't open, can't install software center or 3rd party software from the web or in terminal.

[fall2]

Can't install or upgrade anything.

[oldos2er]

Can you please post the full output of
sudo apt update

[fall2]

Nothing, no change. also getting, "Failed to download repository information Check your internet connection", from the software updater.

[Impavidus]

Nothing? Not even an error message?

oldos2er's command was to find more diagnostics, not to fix anything yet, so it's expected that nothing changes.

[LHammonds]

Look through this thread (https://ubuntuforums.org/showthread.php?t=2399047) and see if your repository list was not updated correctly.

LHammonds

[oldos2er]

Nothing, no change. also getting, "Failed to download repository information Check your internet connection", from the software updater.

Again, please open a terminal (Ctrl-Alt-t) and run sudo apt update, copy and paste the entire output here.

Have you tried changing to the main server? Are you using a mirror, if so which one? What type of internet connection do you have, wired or wireless?

[fall2]

Hit:1 http://us.archive.ubuntu.com/ubuntu bionic InRelease
Get:2 http://us.archive.ubuntu.com/ubuntu bionic-updates InRelease [88.7 kB]
Get:3 http://security.ubuntu.com/ubuntu bionic-security InRelease [83.2 kB]
Ign:4 http://ppa.launchpad.net/midori/ppa/ubuntu bionic InRelease
Get:5 http://us.archive.ubuntu.com/ubuntu bionic-backports InRelease [74.6 kB]
Err:6 http://ppa.launchpad.net/midori/ppa/ubuntu bionic Release
404 Not Found [IP: 91.189.95.83 80]
Get:7 http://us.archive.ubuntu.com/ubuntu bionic-updates/main i386 Packages [271 kB]
Reading package lists... Done
E: The repository 'http://ppa.launchpad.net/midori/ppa/ubuntu bionic Release' does not have a Release file.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.

[fall2]

LHammonds
(https://ubuntuforums.org/member.php?u=1448924)
<sources.list>


# deb cdrom:[Lubuntu 14.04.1 LTS _Trusty Tahr_ - Release i386 (20140722.2)]/ trusty main multiverse restricted universe

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

## Major bug fix updates produced after the final release of the
## distribution.
deb http://us.archive.ubuntu.com/ubuntu/ bionic-updates main restricted
deb-src http://us.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://us.archive.ubuntu.com/ubuntu/ bionic universe
deb-src http://us.archive.ubuntu.com/ubuntu/ bionic universe
deb http://us.archive.ubuntu.com/ubuntu/ bionic-updates universe
deb-src http://us.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://us.archive.ubuntu.com/ubuntu/ bionic multiverse
deb-src http://us.archive.ubuntu.com/ubuntu/ bionic multiverse
deb http://us.archive.ubuntu.com/ubuntu/ bionic-updates multiverse
deb-src http://us.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://us.archive.ubuntu.com/ubuntu/ bionic-backports main restricted universe multiverse
deb-src http://us.archive.ubuntu.com/ubuntu/ bionic-backports main restricted universe multiverse

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

## 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 trusty partner
# deb-src http://archive.canonical.com/ubuntu trusty partner

# deb https://dl.winehq.org/wine-builds/ubuntu/ bionic main # disabled on upgrade to bionic
# deb-src https://dl.winehq.org/wine-builds/ubuntu/ xenial main


<sources.list.distUpgrade>


# deb cdrom:[Lubuntu 14.04.1 LTS _Trusty Tahr_ - Release i386 (20140722.2)]/ trusty main multiverse restricted universe

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

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

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

deb https://dl.winehq.org/wine-builds/ubuntu/ xenial main
# deb-src https://dl.winehq.org/wine-builds/ubuntu/ xenial main

[Bashing-om]

fall2; Uh Huh ..

Now we are cooking with Crisco :)

the package manager is telling you the truth:


E: The repository 'http://ppa.launchpad.net/midori/ppa/ubuntu bionic Release' does not have a Release file.

when we look at the source:
http://ppa.launchpad.net/midori/ppa/ubuntu/dists/
one sees that wily was the last supported release.

Disable this PPA and all will look better,



my bit to try and help

[fall2]

Bashing-om (https://ubuntuforums.org/member.php?u=1111508) Thanks, that fixed the upgrade issue. I just realized I can no longer download from the old software center I was using, synaptic packet manager loads but fails to open. I found snapcraft and can use that for downloads I need. Thank you all.

[Bashing-om]

fall2; Great .

What means ?


from the old software center


If that refers to an End_Of_Life release then be aware old releases' repositories are moved to "old-releases" and the repository you may expect no longer exists.



things come to an end - one way or the other :)