Discover arch не работает

Arch Linux

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#1 2019-02-25 10:04:27

[Solved] Discover — no application backends found

Thought I would have a look at discover but get the above error. Running plasma-discover —listbackends from the terminal returns

plasma-discover —listbackends
Available backends:
* packagekit-backend
* fwupd-backend
* flatpak-backend
* kns-backend

Is there something else I need to install?

Last edited by kurt (2019-02-26 10:34:08)

#2 2019-02-25 21:36:40

Re: [Solved] Discover — no application backends found

On my system this is exactly the same issue.

I am using Octopi right now.

#3 2019-02-26 08:26:35

Re: [Solved] Discover — no application backends found

Did you check and install the relevant opt depends? I’m not on my arch and not sure if plasma-discover simply lists what’s compiled in with that command as opposed to what’s actually installed

#4 2019-02-26 08:35:55

Re: [Solved] Discover — no application backends found

Did you check and install the relevant opt depends? I’m not on my arch and not sure if plasma-discover simply lists what’s compiled in with that command as opposed to what’s actually installed

I didn’t manually install discover it came with my kde install. I tried a reinstall and there were no opt depends

#5 2019-02-26 08:39:29

Re: [Solved] Discover — no application backends found

Did you check and install the relevant opt depends? I’m not on my arch and not sure if plasma-discover simply lists what’s compiled in with that command as opposed to what’s actually installed

I didn’t manually install discover it came with my kde install. I tried a reinstall and there were no opt depends

Ahhhhh. Apologies I see what you mean now. The plasma-discover command just list what package backends I could use. I installed packagekit and it now works. Thanks

Just out of interest which ones should I have installed. All?

#6 2019-02-26 09:06:41

Re: [Solved] Discover — no application backends found

For normal Arch package support just packagekit-qt5 is needed, the others are for relevant other uses: flatpak for flatpak support, fwupd for firmware updates KNS for KDE’s own new stuff plugins/addons

Don’t forget to mark as [SOLVED] by editing the title in your first post.

#7 2021-09-13 15:33:01

Re: [Solved] Discover — no application backends found

I hate digging up dead threads, but I just did a fresh minimal install of KDE and find that Discover still doesn’t have packagekit-qt5 listed as a dependency. Being a relative noob, how does one go about sending a message to the package maintainer to get this added? I would like to add that I have found several of these issues on my fresh load. A package should list all the dependencies and should just work.

Also, thanks for this info. It fixed my problem.

Guarantee does not cover shark bite, bear attack, or children under 5.

#8 2021-09-13 16:24:48

Re: [Solved] Discover — no application backends found

I hate digging up dead threads, but I just did a fresh minimal install of KDE and find that Discover still doesn’t have packagekit-qt5 listed as a dependency. Being a relative noob, how does one go about sending a message to the package maintainer to get this added? I would like to add that I have found several of these issues on my fresh load. A package should list all the dependencies and should just work.

No: YOU should read the optional dependencies of the packages you install, which pacman prints for you.

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Arch Linux

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#1 2019-10-24 08:37:21

[SOLVED] KDE Plasma Discover «Please verify internet connectivity»

Hi, I’ve just installed freshly new arch with kde plasma. Everything went well, but the problem is there is an error displayed on the «Featured» section in Discover. «Unable to load applications. Please verify Internet connectivity». Note that my internet works fine. I’ve installed arch with kde before and everything was okay, then I install on another laptop and this problem appears.

Last edited by iamzimy (2021-01-31 04:31:54)

#2 2019-10-30 07:16:10

Re: [SOLVED] KDE Plasma Discover «Please verify internet connectivity»

Same here i just installed packagekit-qt5
problem solve

I Love Arch Linux

#3 2019-12-17 18:24:36

Re: [SOLVED] KDE Plasma Discover «Please verify internet connectivity»

I have the same problem and packagekit-qt5 is installed. I’ve just reinstalled both packagekit-qt5 and discover but that doesn’t help.
Discover shows all the installed packages and updates whenever I install stuff in pacman but I can’t search in Discover and the home section also shows «Featured — Unable to load applications. Please verify your internet connectivity.»

Wifi is working connected though.

Discover also shows updates and let’s run updates from it’s GUI. Very weird.

Last edited by dderder (2019-12-17 18:26:40)

#4 2020-01-07 09:46:42

Re: [SOLVED] KDE Plasma Discover «Please verify internet connectivity»

I have the same problem! i’ve just done a completely fresh install of Arch and followed the install guide to the letter (as I’ve done a couple times before), but this time Discover shows no results, and the same thing with updates / features page is happening to me too!

This is the output when I run it via console if that helps

#5 2020-01-08 12:43:44

Re: [SOLVED] KDE Plasma Discover «Please verify internet connectivity»

Maybe you could try to create this file: /etc/NetworkManager/conf.d/dhcp-client.conf and put this in its content:
[main]
dhcp=dhclient (or dhcpcd)

#6 2020-02-08 03:44:28

Re: [SOLVED] KDE Plasma Discover «Please verify internet connectivity»

Registered an account today just to follow this thread. I am experiencing this same issue on a fresh install I did yesterday. As other users have stated, I also can confirm packagekit-qt5 is installed on my system. Updates work just fine, but I cannot view featured applications.

#7 2020-02-09 01:49:24

Re: [SOLVED] KDE Plasma Discover «Please verify internet connectivity»

I have found a resolution. somewhat. I decided to install the kde-applications package group to see what it had to offer. It is a bit bloated, however, and adds more than 150 packages to the system.

So, if you look through the packages within the package group on Arch’s website, you’ll probably find what you need to get discover working as expected. Unfortunately I don’t know which package (or packages) it was because I installed everything.

#8 2020-04-20 17:21:32

Re: [SOLVED] KDE Plasma Discover «Please verify internet connectivity»

I was having the exact same problem and I gave up; however (when I wasn’t looking for it) I found the solution (at least in my setup) in a youtube video. just have to re-install the «appstream» package, which «appstream-qt» is dependent on, which «discover» is dependent on

#9 2020-07-06 20:25:11

Re: [SOLVED] KDE Plasma Discover «Please verify internet connectivity»

I was fetching the same problem after a fresh install of KDE plasma. After a lot of digging in, I found the solution, but I don’t know which package is specifically solving the problem. In the first hand install or reinstall the packagekit and packagekit-qt5. See if that solves the problem. If not, try install or reinstall the appstream and appstream-qt package. See if that solves the problem. Remember you need to restart your system after install or reinstalling these package.

That should fix the problem, And yet if the problem is not fixed, just install the whole ‘plasma’ group and ‘kde-applications’. This will definitely fix the issue.

Last edited by enigmatic_jihad (2020-07-06 20:25:53)

#10 2021-07-23 18:50:16

Re: [SOLVED] KDE Plasma Discover «Please verify internet connectivity»

I actually found the correct solution to the above problem. installing none of the packages worked for me (But still, install them to clear any dependencies). What actually worked for me was installing the apper package of kde, its a software manager, which is required for plasma-discover to work properly. Hope this helps

#11 2021-08-22 04:07:42

Re: [SOLVED] KDE Plasma Discover «Please verify internet connectivity»

I was having the exact same problem and I gave up; however (when I wasn’t looking for it) I found the solution (at least in my setup) in a youtube video. just have to re-install the «appstream» package, which «appstream-qt» is dependent on, which «discover» is dependent on

this resolved the issue on my machine

#12 2021-08-24 12:52:19

Re: [SOLVED] KDE Plasma Discover «Please verify internet connectivity»

Just wanted to note for anyone still having this issue that it can be caused by adding an OpenDesktop.org account to KDE Online Accounts. The only solution I know of is to not use the OpenDesktop.org accounts in KDE Online Accounts.

#13 2021-08-25 03:34:32

Re: [SOLVED] KDE Plasma Discover «Please verify internet connectivity»

I It is a bit bloated, however, and adds more than 150 packages to the system.

So, if you look through the packages within the package group on Arch’s website, you’ll probably find what you need to get discover working as expected. Unfortunately I don’t know which package (or packages) it was because I installed everything.

Last edited by Superadmin (2021-08-28 03:50:00)

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Arch Linux

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#1 2021-02-03 12:21:03

[SOLVED] KDE Discover store is contantly crashing after systemd update

I have KDE Plasma installed on my Arch installation and used the Discover store to easily update my apps and system components and install flatpak apps. But after applying the systemd 247.3-1 update, it doesn’t start anymore, it just crashes on startup.

Here’s error log KDE provides every single time I try to open Discover:

How can I fix this without re-installing Arch Linux, but without systemd?

(Honestly, f*ck you, systemd with your OS-breaking bugs!)

Last edited by TheFurryWeeb (2021-02-04 11:56:38)

A computer and Linux nerd, an avid 2D platformer and RPG gamer and a furry combined into one person.

I hope I can help you out with your Arch issues and get myself helped out, as well.

#2 2021-02-03 16:02:33

Re: [SOLVED] KDE Discover store is contantly crashing after systemd update

Are you completely sure that this is systemd’s fault? Appstream was also updated yesterday and it seems a much more plausible culprit given the backtrace. Please try downgrading appstream and appstream-qt

#3 2021-02-04 09:51:13

Re: [SOLVED] KDE Discover store is contantly crashing after systemd update

Are you completely sure that this is systemd’s fault? Appstream was also updated yesterday and it seems a much more plausible culprit given the backtrace. Please try downgrading appstream and appstream-qt

I can’t downgrade AppStream, even if I uninstalled KDE. It has dependency issues.

Last edited by TheFurryWeeb (2021-02-04 09:51:44)

A computer and Linux nerd, an avid 2D platformer and RPG gamer and a furry combined into one person.

I hope I can help you out with your Arch issues and get myself helped out, as well.

#4 2021-02-04 09:54:52

Re: [SOLVED] KDE Discover store is contantly crashing after systemd update

what «dependency issues»? please post literal error messages

#5 2021-02-04 11:11:59

Re: [SOLVED] KDE Discover store is contantly crashing after systemd update

I have the same issue and downgrading appstream/-qt actually solves it.

#6 2021-02-04 11:20:16

Re: [SOLVED] KDE Discover store is contantly crashing after systemd update

what «dependency issues»? please post literal error messages

A computer and Linux nerd, an avid 2D platformer and RPG gamer and a furry combined into one person.

I hope I can help you out with your Arch issues and get myself helped out, as well.

#7 2021-02-04 11:24:35

Re: [SOLVED] KDE Discover store is contantly crashing after systemd update

what «dependency issues»? please post literal error messages

If you have a copy of an older version of appstream in /var/cache/pacman/pkg just go there and use

(the version number is just an example based on what I had on my machine, replace with your own)

#8 2021-02-04 11:31:45

Re: [SOLVED] KDE Discover store is contantly crashing after systemd update

what «dependency issues»? please post literal error messages

If you have a copy of an older version of appstream in /var/cache/pacman/pkg just go there and use

(the version number is just an example based on what I had on my machine, replace with your own)

I didn’t have version 0.13 in my cache, so I just downloaded the package file from the Arch Linux Archive and downgraded the package that way.

How can I temporarily blacklist the updates of AppStream and re-enable it after the bugfix update came out?

A computer and Linux nerd, an avid 2D platformer and RPG gamer and a furry combined into one person.

I hope I can help you out with your Arch issues and get myself helped out, as well.

#9 2021-02-04 11:35:39

Re: [SOLVED] KDE Discover store is contantly crashing after systemd update

add the packages in /etc/pacman.conf «IgnorePkg» (should be around line 26), like this:

#10 2021-02-04 11:40:49

Re: [SOLVED] KDE Discover store is contantly crashing after systemd update

add the packages in /etc/pacman.conf «IgnorePkg» (should be around line 26), like this:

One final question: even though I blacklisted the packages, appstream and appstream-qt still appear in Discover. Can I blacklist them in Discover, too?

A computer and Linux nerd, an avid 2D platformer and RPG gamer and a furry combined into one person.

I hope I can help you out with your Arch issues and get myself helped out, as well.

#11 2021-02-04 11:45:47

Re: [SOLVED] KDE Discover store is contantly crashing after systemd update

One final question: even though I blacklisted the packages, appstream and appstream-qt still appear in Discover. Can I blacklist them in Discover, too?

I’m not sure Discover supports Pacman blacklist feature. I use Discover only for updating Snaps (actually one single Snap application which is not available anywhere else), so it does not see ArchLinux packages in my case.
Maybe someone else does know.

#12 2021-02-04 11:54:51

Re: [SOLVED] KDE Discover store is contantly crashing after systemd update

One final question: even though I blacklisted the packages, appstream and appstream-qt still appear in Discover. Can I blacklist them in Discover, too?

I’m not sure Discover supports Pacman blacklist feature. I use Discover only for updating Snaps (actually one single Snap application which is not available anywhere else), so it does not see ArchLinux packages in my case.
Maybe someone else does know.

Wait, Discover just needed a couple of minutes to read the updated pacman.conf file and start ignoring AppStream updates.

A computer and Linux nerd, an avid 2D platformer and RPG gamer and a furry combined into one person.

I hope I can help you out with your Arch issues and get myself helped out, as well.

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