After Upgrade to v16.04 - Install Software Disappeared?

[Rick St. George]

On two machines, upgraded to UbuntuStudio v16.04 and Xubuntu v16.04 and Software Center disappeared. Since the Upgrade REMOVED Office and other Apps such as PulseAudio, How do we get back ability to INSTALL Software?

Thanks!
Rick

[Rick St. George]

Found this - "Ubuntu Software Centre has been replaced by Gnome Software (re-branded Ubuntu software) and its software catalogue is still under construction. And we do need the partner repositories enabled."
Here; https://ubuntuforums.org/showthread....ware+installer

But we don't have this either.

[QDR06VV9]

What dose it say after running these

sudo apt-get install -f 
sudo apt-get update 
sudo apt-get install software-center

And Do not forget about synaptic.

sudo apt install synaptic

[Rick St. George]

stephen@stephen-evo-5723:~$ sudo apt-get install -f
Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following packages were automatically installed and are no longer required:
  libcuda1-352-updates nvidia-libopencl1-352-updates vcdimager
Use 'sudo apt autoremove' to remove them.
0 upgraded, 0 newly installed, 0 to remove and 11 not upgraded.
stephen@stephen-evo-5723:~$ sudo apt-get update
Get:1 http://download.virtualbox.org/virtualbox/debian xenial InRelease [7,894 B]
Ign:2 http://download.bitdefender.com/repos/deb bitdefender InRelease          
Hit:3 http://download.bitdefender.com/repos/deb bitdefender Release            
Ign:1 http://download.virtualbox.org/virtualbox/debian xenial InRelease  
Hit:4 http://archive.ubuntu.com/ubuntu xenial InRelease                  
Hit:5 http://ppa.launchpad.net/jfi/ppa/ubuntu xenial InRelease           
Hit:7 http://archive.ubuntu.com/ubuntu xenial-updates InRelease         
Hit:8 http://ppa.launchpad.net/pipelight/stable/ubuntu xenial InRelease 
Get:9 http://archive.ubuntu.com/ubuntu xenial-security InRelease [94.5 kB]
Hit:10 http://ppa.launchpad.net/sunab/kdenlive-release/ubuntu xenial InRelease 
Hit:11 http://ppa.launchpad.net/ubuntu-sdk-team/ppa/ubuntu xenial InRelease    
Hit:12 http://ppa.launchpad.net/webupd8team/java/ubuntu xenial InRelease       
Hit:13 https://deb.opera.com/opera-stable stable InRelease
Fetched 102 kB in 1s (80.3 kB/s)
Reading package lists... Done
W: GPG error: http://download.virtualbox.org/virtualbox/debian xenial InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY A2F683C52980AECF
W: The repository 'http://download.virtualbox.org/virtualbox/debian xenial InRelease' is not signed.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: http://download.bitdefender.com/repos/deb/dists/bitdefender/Release.gpg: Signature by key 639ADD458616BD06A1B55F9CA373FB480EC4FE05 uses weak digest algorithm (SHA1)
stephen@stephen-evo-5723:~$ sudo apt autoremove
Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following packages will be REMOVED:
  libcuda1-352-updates nvidia-libopencl1-352-updates vcdimager
0 upgraded, 0 newly installed, 3 to remove and 11 not upgraded.
After this operation, 29.6 MB disk space will be freed.
Do you want to continue? [Y/n] y
(Reading database ... 257396 files and directories currently installed.)
Removing libcuda1-352-updates (352.63-0ubuntu0.14.04.1) ...
Removing nvidia-libopencl1-352-updates (352.63-0ubuntu0.14.04.1) ...
Removing vcdimager (0.7.24+dfsg-0.1ubuntu2) ...
Processing triggers for libc-bin (2.23-0ubuntu3) ...
Processing triggers for man-db (2.7.5-1) ...
stephen@stephen-evo-5723:~$ sudo apt-get install software-center
Reading package lists... Done
Building dependency tree       
Reading state information... Done
Package software-center is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source

E: Package 'software-center' has no installation candidate

[QDR06VV9]

Well the only thing I can offer right now is
Do not forget about synaptic.

sudo apt install synaptic gdebi

I was under the impression that the package manager was fixed..but I guess not.

[Rick St. George]

stephen@stephen-evo-5723:~$ sudo apt install synaptic gdebi
[sudo] password for stephen: 
Reading package lists... Done
Building dependency tree       
Reading state information... Done
Package synaptic is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source

Package gdebi is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source

E: Package 'synaptic' has no installation candidate
E: Package 'gdebi' has no installation candidate

[QDR06VV9]

I am sure you have updated...lets see what your repo list is like

mousepad /etc/apt/sources.list

Or use the native text editor

[Rick St. George]

Don't have Mousepad, used SCITE. Here is the output!

# deb cdrom:[Ubuntu-Studio 14.04.1 LTS _Trusty Tahr_ - Release amd64 (20140722.1)]/ trusty main multiverse restricted universe

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

## Major bug fix updates produced after the final release of the
## distribution.
deb-src http://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.

## 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.

## 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://archive.ubuntu.com/ubuntu xenial-security main restricted
deb-src http://archive.ubuntu.com/ubuntu xenial-security main restricted #Added by software-properties

## 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

## Uncomment the following two lines to add software from Ubuntu's
## 'extras' repository.
deb http://archive.ubuntu.com/ubuntu xenial-updates main restricted

Also changed in Repository from "trusty" to "xenial", but it did not fully work. See above output in Post #4.

[QDR06VV9]

Just to be clear...this is supposed to be 16.04 Xenial Right?

[howefield]

Have a look at the Software and Updates application, and check that the relevant repositories are selected.