Discover and Updates

[MrPlod]

I'm having a nightmare!

I've dumped Ubuntu 16.04 for Kubuntu 17.10 and regretting it

Discovery will not display new apps for me to install and I can not update the system.

I have a few other issues. But, if I sort this out, Update Firefox and install VLC and Thunderbird I will be a lot happier as I have been trying for 5 hours.

Help!

[Snowhog]

Launch Konsole. In the konsole, type:

sudo apt update
sudo apt full-upgrade

Discover isn't a full-fledged package 'manager'. From the open konsole, install muon, a true package manager:

sudo apt install muon

Close the konsole when finished. Logout and reboot.

[MrPlod]

Hi Thanks for helping

I get errors with sudo get update

deapad-100-15IBY:~$ sudo apt update
Ign:1 http://security.ubuntu.com/ubuntu zesty-security InRelease
Err:2 http://security.ubuntu.com/ubuntu zesty-security Release
 404  Not Found [IP: 91.189.88.152 80]
Ign:3 http://gb.archive.ubuntu.com/ubuntu zesty InRelease                
Hit:4 http://ppa.launchpad.net/kubuntu-ppa/backports/ubuntu zesty InRelease
Ign:5 http://gb.archive.ubuntu.com/ubuntu zesty-updates InRelease
Ign:6 http://gb.archive.ubuntu.com/ubuntu zesty-backports InRelease
Err:7 http://gb.archive.ubuntu.com/ubuntu zesty Release
 404  Not Found [IP: 91.189.88.149 80]
Err:8 http://gb.archive.ubuntu.com/ubuntu zesty-updates Release
 404  Not Found [IP: 91.189.88.149 80]
Err:9 http://gb.archive.ubuntu.com/ubuntu zesty-backports Release
 404  Not Found [IP: 91.189.88.149 80]
Reading package lists... Done
E: The repository 'http://security.ubuntu.com/ubuntu zesty-security Release' does no longer 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.
E: The repository 'http://gb.archive.ubuntu.com/ubuntu zesty 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.
E: The repository 'http://gb.archive.ubuntu.com/ubuntu zesty-updates 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.
E: The repository 'http://gb.archive.ubuntu.com/ubuntu zesty-backports 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.

[MrPlod]

Also:

:~$  sudo apt install muon
Reading package lists... Done
Building dependency tree       
Reading state information... Done
E: Unable to locate package muon

[Snowhog]

The errors you are seeing when running sudo apt update are due to having Zesty Zebra repositories in your /etc/fstab file. They shouldn't be there as you are not running Zesty, but Artful. Open a konsole (if you aren't still in one) and type:

cat /etc/fstab

Copy the output and then paste it inside of CODE tags in your reply. The CODE tag is the # icon above the Quick Reply window.

[MrPlod]

cat /etc/fstab
# /etc/fstab: static file system information.
#
# Use 'blkid' to print the universally unique identifier for a
# device; this may be used with UUID= as a more robust way to name devices
# that works even if disks are added and removed. See fstab(5).
#
# <file system> <mount point>   <type>  <options>       <dump>  <pass>
# / was on /dev/sda3 during installation
UUID=2da69bc6-5e5d-4495-a99b-d768527c7c58 /               ext4    errors=remount-ro 0       1
# /boot/efi was on /dev/sda1 during installation
UUID=A630-4A87  /boot/efi       vfat    umask=0077      0       1
# /home was on /dev/sda9 during installation
UUID=2c0b79e5-7678-4fd6-bae2-91f156118754 /home           ext4    defaults        0       2
# swap was on /dev/sda2 during installation
UUID=9592e20f-d46b-48cc-bb1f-12eb3f315f80 none            swap    sw              0       0

[acheron]

I think Snowhog meant:

cat /etc/lsb-release

[Snowhog]

Doh! No, I meant:

cat /etc/apt/sources.list

[MrPlod]

cat /etc/apt/sources.list
# deb cdrom:[Kubuntu 17.04 _Zesty Zapus_ - Release amd64 (20170412)]/ zesty main multiverse restricted universe

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

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

deb http://security.ubuntu.com/ubuntu zesty-security main restricted
# deb-src http://security.ubuntu.com/ubuntu zesty-security main restricted
deb http://security.ubuntu.com/ubuntu zesty-security universe
# deb-src http://security.ubuntu.com/ubuntu zesty-security universe
deb http://security.ubuntu.com/ubuntu zesty-security multiverse
# deb-src http://security.ubuntu.com/ubuntu zesty-security multiverse

[Snowhog]

And there's your problem. You are not running 17.10, at least, your sources.list doesn't support that you are, as it contains repository URLs for 17.04 (Zesty Zapus) which became EOL (End of Life) on January 13, 2018.

To 'upgrade' to 17.10 you want to run, in a konsole:

sudo do-release-upgrade

As 18.04 still hasn't been released as 'final', the 'latest' version of Kubuntu is 17.10.

[acheron]

Instructions for upgrading end of life releases are here: https://help.ubuntu.com/community/EOLUpgrades

[Snowhog]

That wiki is rather old; last updated in 2015. Won't the do-release-upgrade do what's required here? Basically, it makes a copy of the sources.list as sources.list.save and uses the original, replacing the release name with that of the latest release, yes?

[acheron]

This point is that it will fall over and die unless you point the current sources.list @ old-releases.ubuntu.com first

[MrPlod]

Great thanks for your help...
It all makes sense, but it was a fresh install today from an iso that I downloaded from Ubuntu.com, ah well.

The upgrade has been saying 2hr 30mins for about 30mins...

It would be quicker to just download a fresh iso? What do you think?

[Snowhog]

This point is that it will fall over and die unless you point the current sources.list @ old-releases.ubuntu.com first

Good to know. Thank you.