You have failed to provide correct authentication.

[absolute beginner]

I am trying to remove some software from my Kubuntu machine using the software management utilit found in Applications>systems>software management.

I get the error message "You have failed to provide correct authentication. Please check any passwords or account settings" yet I am not getting any dialogue box asking me to provide any password?

I also get the same error

I should mention that from the command shell I can successfully perform a sudo apt-get update successfully.

[Snowhog]

What version of Kubuntu are you running, and which package manager are you using?

[absolute beginner]

I am using the very latest version. Just upgraded yesterday.

I am using the software management utility found in Applications>systems>software management.

I get the same error message if I try to use applications>systems>Update Manager and hit the "check for updates' button.

[Snowhog]

Sounds like something is amiss with Muon. Try launching it from KRunner (Alt+F2) and typing: kdesudo muon and pressing Enter. This isn't supposed to be necessary, but see if it will then permit you to remove what you want.

[absolute beginner]

Sounds like something is amiss with Muon. Try launching it from KRunner (Alt+F2) and typing: kdesudo muon and pressing Enter. This isn't supposed to be necessary, but see if it will then permit you to remove what you want.

It seems to start the process and the first time I attempted it, I was asked to enter my password, but I get the error message when I ask it to check for updates:

Failed to Apply Changes - Muon Package Manager

Could not download packages

I have now asked it to do a full upgrade and it has reported 22 packages upgradeable and has started the upgrade...so will see what happens.....

[absolute beginner]

It seems to start the process and the first time I attempted it, I was asked to enter my password, but I get the error message when I ask it to check for updates:

Failed to Apply Changes - Muon Package Manager

Could not download packages

I have now asked it to do a full upgrade and it has reported 22 packages upgradeable and has started the upgrade...so will see what happens.....

Well the full upgrade seemed to work and I was subsequently able to remove cairo-dock using the utility utility found in Applications>systems>software management.

However when I try to check for updates by launching from KRunner (Alt+F2) and typing: kdesudo muon and pressing Enter and then 'Check for Updates' I still get the message
Failed to Apply Changes - Muon Package Manager

Could not download packages.

Whenb I click on details I get the following:

cdrom:[Kubuntu 9.10 _Karmic Koala_ - Release i386 (20091028.5)]/dists/karmic/main/binary-i386/Packages Please use apt-cdrom to make this CD-ROM recognized by APT. apt-get update cannot be used to add new CD-ROMs cdrom:[Kubuntu 9.10 _Karmic Koala_ - Release i386 (20091028.5)]/dists/karmic/restricted/binary-i386/Packages Please use apt-cdrom to make this CD-ROM recognized by APT. apt-get update cannot be used to add new CD-ROMs http://nz.archive.ubuntu.com/ubuntu/...source/Sources 404 Not Found http://nz.archive.ubuntu.com/ubuntu/...source/Sources 404 Not Found http://nz.archive.ubuntu.com/ubuntu/...source/Sources 404 Not Found http://nz.archive.ubuntu.com/ubuntu/...source/Sources 404 Not Found http://nz.archive.ubuntu.com/ubuntu/...-i386/Packages 404 Not Found http://nz.archive.ubuntu.com/ubuntu/...-i386/Packages 404 Not Found http://nz.archive.ubuntu.com/ubuntu/...-i386/Packages 404 Not Found http://nz.archive.ubuntu.com/ubuntu/...-i386/Packages 404 Not Found

[SteveRiley]

Hm. Please show the output of these commands:

cat /var/log/installer/lsb-release

cat /var/log/installer/media-info

cat /etc/lsb-release

cat /etc/apt/sources.list

[absolute beginner]

Thanks for your help Snowhog and SteveRiley

cat /var/log/installer/lsb-release

No such file or  directory

cat /var/log/installer/media-info

Kubuntu 9.10 "Karmic Koala" - Release i386 (20091028.5)

cat /etc/lsb-release

DISTRIB_id=Ubuntu
DISTRIB_RELEASE=13.04
DISTRIB_CODENAME=raring
DISTRIB_DESCRIPTION="Ubuntu 13.04"

cat /etc/apt/sources.list

deb cdrom:[Kubuntu 9.10 _Karmic Koala_ - Release i386 (20091028.5)]/ karmic main restricted
# See [url]http://help.ubuntu.com/community/UpgradeNotes[/url] for how to upgrade to
# newer versions of the distribution.

deb [url]http://archive.ubuntu.com/ubuntu[/url] raring main restricted
deb-src [url]http://archive.ubuntu.com/ubuntu[/url] raring main restricted

## Major bug fix updates produced after the final release of the
## distribution.
deb [url]http://archive.ubuntu.com/ubuntu[/url] raring-updates main restricted
deb-src [url]http://archive.ubuntu.com/ubuntu[/url] raring-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 [url]http://archive.ubuntu.com/ubuntu[/url] raring universe
deb-src [url]http://archive.ubuntu.com/ubuntu[/url] raring universe
deb [url]http://archive.ubuntu.com/ubuntu[/url] raring-updates universe
deb-src [url]http://archive.ubuntu.com/ubuntu[/url] raring-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 [url]http://archive.ubuntu.com/ubuntu[/url] raring multiverse
deb-src [url]http://archive.ubuntu.com/ubuntu[/url] raring multiverse
deb [url]http://archive.ubuntu.com/ubuntu[/url] raring-updates multiverse
deb-src [url]http://archive.ubuntu.com/ubuntu[/url] raring-updates multiverse

## Uncomment the following two lines to add software from the 'backports'
## repository.
## 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 [url]http://nz.archive.ubuntu.com/ubuntu/[/url] karmic-backports main restricted universe multiverse
deb-src [url]http://nz.archive.ubuntu.com/ubuntu/[/url] karmic-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 [url]http://archive.canonical.com/ubuntu[/url] karmic partner
deb-src [url]http://archive.canonical.com/ubuntu[/url] karmic partner

deb [url]http://archive.ubuntu.com/ubuntu[/url] raring-security main restricted
deb-src [url]http://archive.ubuntu.com/ubuntu[/url] raring-security main restricted
deb [url]http://archive.ubuntu.com/ubuntu[/url] raring-security universe
deb-src [url]http://archive.ubuntu.com/ubuntu[/url] raring-security universe
deb [url]http://archive.ubuntu.com/ubuntu[/url] raring-security multiverse
deb-src [url]http://archive.ubuntu.com/ubuntu[/url] raring-security multiverse
deb [url]http://repository.spotify.com[/url] stable non-free # disabled on upgrade to precise

[SteveRiley]

Have you steadily upgraded this machine since 9.10? Pretty awesome.

Edit the file /var/log/apt/sources.list (with kdesudo kate) and put a # in front of the "deb cdrom" line. My suspicion is that Muon is trying to make some kind of decision based on that, and since Karmic no longer exists, its repository is unavailable. The "cdrom" line really isn't necessary.

Also, please make the following additional changes, as indicated in red.

## Uncomment the following two lines to add software from the 'backports'
## repository.
## 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://nz.archive.ubuntu.com/ubuntu/ [B][COLOR="#FF0000"]raring[/COLOR][/B]-backports main restricted universe multiverse
deb-src http://nz.archive.ubuntu.com/ubuntu/ [B][COLOR="#FF0000"]raring[/COLOR][/B]-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 [B][COLOR="#FF0000"]raring[/COLOR][/B] partner
deb-src http://archive.canonical.com/ubuntu [B][COLOR="#FF0000"]raring[/COLOR][/B] partner

After you save the file, open a console window and run

sudo apt-get update && sudo apt-get dist-upgrade

This should bring you completely up-to-date.

[Snowhog]

Your problem (likely) is the deb cdrom:[Kubuntu 9.10 _Karmic Koala_ - Release i386 (20091028.5)]/ karmic main restricted in your /etc/apt/sources.list file. It needs to be commented - put a # in front of it so it looks like:

# deb cdrom:[Kubuntu 9.10 _Karmic Koala_ - Release i386 (20091028.5)]/ karmic main restricted

You'll have to edit the file 'as root'. Press Alt+F2 and type:

kdesudo kate /etc/apt/sources.list

Make the change and save the file and exit Kate.
Then open a console and type:

sudo apt-get update && sudo apt-get dist-upgrade

Make the changes Steve pointed out as well.

[SteveRiley]

Snowhog, we have to stop meeting like this

[absolute beginner]

Snowhog, we have to stop meeting like this

Awesome guys problem resolved. Thanks so much for your help!

[absolute beginner]

Have you steadily upgraded this machine since 9.10? Pretty awesome.

Yep it is my 11 year old son's machine and as you can imagine an 11 year old boy can break most things - but it has proved amazingly resilient. I didn't want him using Windows at home as they have that at school and having a Linux machine forces him to learn some extra stuff!

My own Linux machine has been continually updated from an even earlier install and works brilliantly - much more stables than my windows machines!