Discover not showing any packages

[CaroleF]

Hi,

I know that there has been issue with Discover search previously but I did an update on Thursday (8/12/2016) and after that Discover doesn't show any packages at all, including Installed ones.

I have tried a complete removal via Synaptic, no chance.

I have tried a complete removal of Muon and a re-install, still no change.

I've tried running sudo update-apt-xapian-index, still no change.

I've run out of ideas.

I am running Kubuntu 16.04 and Plasma 5.6.2.

Help please.

[jglen490]

Open a konsole and check for the presence of a /etc/sources.list file. If it's not present, check for a /etc/sources.list.save file.

Chances are they are both gone, depending on what you did with a "complete" removal. If you had any added sources, other than what is defaulted, you'll have to add those back in.

If neither one is present, you will need to configure one via Muon or Discover. I use Muon Package Manager, so in that program go to Settings -> Configure Software Sources. If the sources.list.save file is present, you should be able to open and save it as the sources.list file in sudo using a text editor like nano or gedit.

[CaroleF]

Hi.

Thanks. I checked and there was no /etc/sources.list or /etc/sources.list.save either.

I went into Muon and checked in Configure. All the things I expected to see were there. I don't have any problem finding software in Muon, just in Discover. I did uncheck everything, close Configure and then open it again and re-add the sources. There still aren't any sources files in /etc and Discover still isn't working.

Weirdly, though, on closer inspection, Discover does show entries for Fonts and Widgets, but nothing else.

Thanks for the help, but my problem continues.

[claydoh]

the files will be /etc/apt/sources.list, etc

[CaroleF]

Thanks found it now.

Here is sources.list

## 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-src http://gb.archive.ubuntu.com/ubuntu/ xenial multiverse
# deb-src http://gb.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-src http://gb.archive.ubuntu.com/ubuntu/ xenial-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 xenial partner
deb-src http://archive.canonical.com/ubuntu xenial partner

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

I loaded Discover but it didn't show anything, so I deleted the entries in source.list and ran Muon, which rebuilt the indexes and loaded Discover again.

Now it is all back to normal. Thanks for your help.

[Guest]

I'm having the same issue, and filed a bug yesterday about it: https://bugs.kde.org/show_bug.cgi?id=376252 (already closed as duplicate).
I did not understand what to do to get discover to display software. I have a /etc/apt/sources.list file, but changing it by hand and starting muon does not change anything in discover.