Task Manager Icons Disappear/Move When Hover Over

Support KDE Plasma
1

I have this ongoing issue with KDE Plasma. Every time I hover over icons on Task Manager they dance around or disappear altogether. even the kde application launcher icon disappears!. So I am mostly guessing where things are.
System Info
Operating System: Manjaro Linux
KDE Plasma Version: 6.0.5
KDE Frameworks Version: 6.5.0
Qt Version: 6.7.2
Kernel Version: 6.9.12-3-MANJARO (64-bit)
Graphics Platform: X11
Processors: 32 × 13th Gen Intel® Core™ i9-13900KF
Memory: 62.6 GiB of RAM
Graphics Processor: NVIDIA GeForce RTX 3060 Ti/PCIe/SSE2
Manufacturer: ASUS
Icons Only Task Manager:

Screenshot_20240928_201824
Screenshot_20240928_2018243838×78 63 KB

Task Manager

Screenshot_20240928_200856
Screenshot_20240928_2008563827×160 216 KB

2

The first question might be … what icon theme are you using? And/or have you tried others?

PS.

System info is

inxi -Farz
3

I am using the default Breath Dark and I have tried Utterly Nord, Scratchy, Edna and the same happens. I think it’s task manager issue.
Task Manager:

Screenshot_20240928_204121
Screenshot_20240928_204121935×708 92 KB

Screenshot_20240928_204215
Screenshot_20240928_204215935×708 106 KB

4

No such thing (anymore).

There are no breath icon themes in the repos.

Please select the default breeze icons and reboot.

5

Your problem seems similar to this. cscs asked for the inxi output which would help diagnose.

6

At face value, that seems to tick all the boxes, though it also begs the question, why is this happening on the OPs system four months after the fact.

Has the OP left the system unmaintained for an extended amount of time? This might be a consideration.

@venadder

I’d suggest switching to a current default theme while investigating this issue. After that, check directories under ~/.config for any remnants of older themes and addons, and remove them. Then finally, reboot to SDDM, enter a TTY, and remove (or rename) the /.cache directory.

This will rename the cache directory:

mv ~/.cache ~/.cache_old

This will delete it completely:

rm -rf ~/.cache/

Stop SDDM (optional):

sudo systemctl stop sddm

Exit the TTY, and reboot again.

This will help ensure that any cruft in the user directory isn’t contributing. The ~/.cache directory will be progressively rebuilt as you use your system.

Output from the inxi command as previously noted, will no doubt be useful:

inxi --admin --verbosity=8 --filter --no-host --width

Cheers.

1 Like
7

adding SceneGraphBackend=opengl did indeed solve the problem

8

I did solve the problem by adding the line below as suggested by the post that was mentioned. I did not leave the system unmaintained as this is my primary OS.
However I am still curious as to why this started to happen. I will do above mentioned steps as well.

SceneGraphBackend=opengl

Thank you for the help and support

9

Umm this is like not even a month old installation of Manjaro KDE. The themes are what it came with. So I am not sure when they removed “Breath Dark” from repos but it was out of the box ( well “Breath light was default” but dark was out of box as well and I just switched to it without any further installations )

10

I’m glad to hear it.

I believe the comment was referring to icon themes – there is no separate breeze-dark icon theme in the repo’s.

The Breeze Dark (global theme) of course remains available (I use that one also).

I’ve taken the liberty of marking the appropriate post as the solution for you, as you seem to have forgotten.

Cheers.

11

Besides the other message mentioning specifically icon themes … all I can guess at is you either hit a very specific time in which you downloaded an ISO still containing those packages right as or right before they became deprecated? Or that you simply used an old ISO.
In either case … it does not really matter. The icons theme used to exist. It does not any more. It was never updated for use with Plasma 6. It cannot be expected to work well on Plasma 6. It should be removed from current systems.

This also begs further questions like … so if your install was ‘old’ enough to have the old icons … then did you also have to upgrade from Plasma 5 to Plasma 6? And if so did you follow the recommended upgrade procedures of cleaning old configs and cache? If not general wonkiness is expected.

If you dont want to be bothered with such things then maybe you should consider a reinstall with a current ISO.

A quick rundown of required steps for transitioning from Plasma 5 to 6

At a minimum the approaches listed here from removing the old config and cache files is required.
https://wiki.archlinux.org/title/KDE#Configuration_related *

* Note that there are multiple threads addressing this and certain extra files may need attention that are not included in the basic strings.

Put together on one line with some messaging:

cd ~/.config && for j in plasma*; do mv -- "$j" "${j%}.bak"; done && mv Trolltech.conf Trolltech.conf.bak && rm -rf ~/.cache/* && kbuildsycoca6 --noincremental && cd ~ && echo -e "\nFinished Clearing Plasma Settings and User Cache.\n\nPlease Reboot.\n"

You may also wish to target any unneeded packages.

sudo pacman -Rns $(pacman -Qdtq)
sudo pacman -Ru kf5

Or simply look for stragglers

pacman -Qdtq
pacman -Qmq
12

ISO was not old. I downloaded and installed and I do not understand what Icon theme? This is all out of box. I installed this system in August. If you look at system information I posted, I am at 6.5

13

I guess it’s not resolved. It’s back when I started the PC this morning. This showed up in task manager this morning and the entry for SceneGraphBackend=opengl was reverted to SceneGraphBackend=software!!

image
image741×586 50.1 KB

14

@venadder In the thread I linked, the same thing happened to another person.

If you have not done so already, you may want to look at the Arch Wiki notes on KDE, particularly 6.6.2 that explains how to clean the cache to resolve upgrade problems.

I know these things can be frustrating sometimes.

15
  • KDE (Arch Wiki)

Scroll down to 6.6.2 Clean cache to resolve upgrade problems as @Fangdrasil indicated.

I gave similar instructions earlier. The Arch Wiki page goes a little deeper. Cheers.

16

Your Kernel is EOL.

You can update your Kernel under Taskbar>Settings>Manjaro Settings Manager>Kernel…

You can choose for example 6.6 LTS or 6.10

https://www.kernel.org/category/releases.html

17

Could you also provide the output of this command? It may help to spot other possibly related issues.

inxi --admin --verbosity=8 --filter --no-host --width
18

System Settings > Appearance & Style > Colors & Themes > Icons

19

Note 1: This question clearly asks about an icon theme.

Note 2: The OP mistakenly assumes the global theme (Breath Dark) is meant, and responds with:

Note 3: This OP’s misunderstanding is missed, and the banter continues with:

Note 4: Confusion continues to propogate:

Looking at the progression, it becomes obvious there was confusion earlier in the thread relating to Breath Dark (as noted above).

Whereas @cscs continued interpreting Breath Dark as an icon theme, the OP was oblivious to the distinction.

To all concerned, there you go… Clear as mud. :stuck_out_tongue_winking_eye:

2 Likes
20

Icons set is Breeze Dark. I hit apply on it again and the problem returned. Thank you so much everyone for all the responses. First things first IO am going to try the suggestions starting with kernel update.