I was looking for a light and fast software manager for KDE/Qt similar to Synaptic, and Apper is an answer.

Although it is usable, and I find it even lighter than Synaptic, it lacks icons for the buttons of various actions when I am trying to use it in LXQT desktop environment (installed on top of Kubuntu 18.04).

In Plasma it looks like this:

enter image description here

enter image description here

but in LXQT like this:

enter image description here

enter image description here

Update after answer suggesting the icon set may be the problem:

This seems to be a problem with it running outside Plasma/KDE or with it running in LXQT:

  • the same icon set was used in Plasma and LXQT.

  • if, in LXQT, I open Apper and then open the Appearance settings to change the icon set, Apper shows its icons, with any icon set. But after restarting Apper, it has no icons, no matter the selected icon set .

I am yet to test in a third desktop environment. I was not able to install it in Mate, for example, due to needed dependencies incompatible with local packages.

  • 1
    You can also try Muon, it supports package pinning. – N0rbert Sep 25 '18 at 16:45
  • @N0rbert - thanks for remembering it to me. It was already installed but I had forgotten about it. It looks even closer to Synaptic. But I still like Apper and would like an answer here. – user47206 Sep 25 '18 at 17:29
  • @N0rbert - that's off-topic here, but I have some problems with Muon in lxqt too. It fails to show updates, unlike Apper and Synaptic, without telling me why. But I don't want to insist on that here. – user47206 Sep 25 '18 at 17:36
  • @cipricos just tried to inform you. I have already vote up for both current question and answer here :) – N0rbert Sep 25 '18 at 17:38
  • @N0rbert - thanks again. "off-topic here" was meant to my "problems" detailed here, not your comment. – user47206 Sep 25 '18 at 17:40

By default, my Apper looks like this:

Apper default

If I look in System Settings > Icons, I have:

Default Icon theme Breeze

But if I change the icon theme to Adwaita, I see some blank spaces:


I suggest you stay with Breeze. If, for some reason, it's missing from your system, sudo apt install breeze-icon-theme should make it available.

| improve this answer | |
  • I have updated my question after testing in Plasma, in fact I was using it in LXQT on top of Kubuntu. Sorry for this delay. But it still may be the icon set. – user47206 Sep 25 '18 at 15:30
  • Your answer shows what you have in Plasma, wright? This question is on Apper in LXQT though. – user47206 Sep 28 '18 at 11:04
  • I have up-voted it, do NOT delete it, as my question was updated in relation to it. I just think your comment was necessary in order to make clear that the answer is on Plasma and therefore that I cannot accept it for the question as it stands now. – user47206 Sep 28 '18 at 11:42
  • 1
    I will do it maybe. For the moment I have this: askubuntu.com/a/1079211/47206. I have also posted various tweaks here and on U&L on LXQT. Searching based on my username and lxqt will bring those forth: unix.stackexchange.com/search?q=user%3A32012+lxqt and askubuntu.com/search?q=user%3A47206+lxqt – user47206 Sep 28 '18 at 12:13
  • 1
    I see that under U&L I have already a few Lxqt QnA. I guess that is the most preferable way to address such topics, not in one single QnA. - As for why I changed from Plasma to Lxqt: Plasma was a bit slow compared to other DEs like Xfce, Kwin crushing all the time, with poor wifi stability. Lxqt with Kwin was a great experience, with kwin never crashing. I like the looks with the Dark lxqt theme and with Oxigen, Breeze or Kvantum widget styles (common to Plasma). – user47206 Sep 28 '18 at 12:23

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