Kubuntu Software Center in 24.04 won't start

[alquimista.ndc]

Update: The problem mysteriously fixed itself without further intervention on my part.

I have no explanation for this. I suspect a hardware issue, but memory seems fine.

I don't think its hardware; its happening to me as described here by several users. Just had a fresh install of 24.04 (from scratch) yesterday; Discover worked just fine, then when I booted my laptop today, Discover is not working any more: same, you try to start the app, the circle informing the load is in progress, and then, nothing. I tryied to re-install using the command line and Synaptic, the problem continues

[claydoh]

So try opening it from a terminal and see if there is an error message there.

plasma-discover

DO NOT USE SUDO here!!!
It will normally spit out a lot of stuff that may look bad, so don't be alarmed.

Also manually check for updates and install any, just in case something is missing

sudo apt update
sudo apt upgrade

Use your system monitor to see if it is running in the background - it may have crashed or something but the process is still running.

[alquimista.ndc]

So try opening it from a terminal and see if there is an error message there.

plasma-discover

DO NOT USE SUDO here!!!
It will normally spit out a lot of stuff that may look bad, so don't be alarmed.

Also manually check for updates and install any, just in case something is missing

sudo apt update
sudo apt upgrade

Use your system monitor to see if it is running in the background - it may have crashed or something but the process is still running.

This is my command line, as per your suggestion, and the corresponding output:

alquimista@alquimista-hpzbook:~$ plasma-discover
fetch ratings! false
adding empty sources model QStandardItemModel(0x55fcefcd1120)

[claydoh]

alquimista@alquimista-hpzbook:~$ plasma-discover
fetch ratings! false
adding empty sources model QStandardItemModel(0x55fcefcd1120)

Well those bits are completely normal

Are you fully up to date?
Have you logged out or rebooted since this?
What about any running process (seen in your System Monitor, in either Applications or Processes)

[alquimista.ndc]

Well those bits are completely normal

Are you fully up to date?
Have you logged out or rebooted since this?
What about any running process (seen in your System Monitor, in either Applications or Processes)

Hi claydoh

I'm going to edit this my entry; this morning after reboot, Discover was working again. I was happy. Then, I suspended the session, came back later, and Discover failed. Tried rebooting the system, ... not working again. Don't know what is happening... I have been working for several years now with Kubuntu with great stability... this is the first time an issue like this happens for me.

[alquimista.ndc]

I found a solution in this site: https://discuss.kde.org/t/discover-n...24-04/16078/15

sudo apt purge plasma-discover-backend-snap

reboot, an ready. Problem solved