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#1 2024-09-18 14:43:50

Javier_Innocent
Member
Registered: 2024-09-13
Posts: 1

KDE Wayland don't show the icon of firefox on panel when it running

Hola.

I am using KDE plasma 6 under Wayland with NVIDIA 3060 laptop (I launch the kernel with nvidia_drm.modeset=1 and nvidia-dkms). When I open firefox 130.0.1-1, the icon will be showed for a while at first (it seems that plasma thinks firefox is opening), then it will be closed, it seems that plasma thinks firefox was be closed (although firefox is still running). If I use X11, the problem will be not appear.

Steps I have tried (but useless):

  • Delete firefox completely and reinstall it

  • update the system

  • use firefox-nightly

I am not sure how to debug this, so any help would be appreciated.

the fastfetch outputs:

Innocent@Daphnis
----------------
OS: Arch Linux x86_64
Host: Dell G15 5511
Kernel: Linux 6.10.10-zen1-1-zen
Uptime: 1 hour, 48 mins
Packages: 1473 (pacman)
Shell: zsh 5.9
Display (BOE0944): 1920x1080 @ 165 Hz in 16″ [Built-in]
DE: KDE Plasma 6.1.5
WM: KWin (Wayland)
WM Theme: Breeze
Theme: Breeze (Dark) [Qt], Breeze-Dark [GTK2], Breeze [GTK3]
Icons: breeze-dark [Qt], breeze-dark [GTK2/3/4]
Font: Noto Sans (10pt) [Qt], Noto Sans (10pt) [GTK2/3/4]
Cursor: Breeze_Light (24px)
Terminal: konsole 24.8.1
CPU: 11th Gen Intel(R) Core(TM) i7-11800H (16) @ 4.60 GHz
GPU 1: NVIDIA GeForce RTX 3060 Mobile / Max-Q [Discrete]
GPU 2: Intel UHD Graphics @ 1.45 GHz [Integrated]
Memory: 8.37 GiB / 15.35 GiB (55%)
Swap: Disabled
Disk (/): 80.41 GiB / 98.12 GiB (82%) - ext4
Local IP (wlp0s20f3): 172.21.31.247/17
Battery (DELL M59JH14): 100% [AC Connected]
Locale: en_US.UTF-8

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#2 2024-11-16 21:28:35

kaetir
Member
Registered: 2018-10-14
Posts: 4

Re: KDE Wayland don't show the icon of firefox on panel when it running

Hello

Not helping you, but I get the same issue

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#3 2025-05-25 11:33:42

kaetir
Member
Registered: 2018-10-14
Posts: 4

Re: KDE Wayland don't show the icon of firefox on panel when it running

Hello

It's been quite a while and I did not find how to fix it.
I also noticed the same thing happens with Deluge.

Did you find a solution ?

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#4 2025-06-05 15:03:54

seelchen
Member
Registered: 2025-06-05
Posts: 1

Re: KDE Wayland don't show the icon of firefox on panel when it running

Hello!

I had the same issue for all my GTK applications. What caused this for me was that I set the environment variable "QT_QPA_PLATFORM=xcb" at some point, which forces X11 for Qt applications. This probably affected KDE and caused the GTK applications (which run on Wayland natively) to not be shown in the taskbar. Removing this environment variable solved this completely for me.

Hope this can help you guys!

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#5 2025-06-05 15:26:08

dan123
Member
Registered: 2025-05-30
Posts: 32

Re: KDE Wayland don't show the icon of firefox on panel when it running

in
~/.config/environment.d/envars.conf
MOZ_ENABLE_WAYLAND=1

cant remember where i found that solution, but it works for me

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#6 2025-06-05 16:13:41

BS86
Member
Registered: 2022-11-03
Posts: 97

Re: KDE Wayland don't show the icon of firefox on panel when it running

dan123 wrote:

in
MOZ_ENABLE_WAYLAND=1

cant remember where i found that solution, but it works for me

that does nothing since Firefox 121 as it is the new default since then. You would have to set it to 0 to force XWayland mode now.

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#7 2025-06-21 14:34:37

kaetir
Member
Registered: 2018-10-14
Posts: 4

Re: KDE Wayland don't show the icon of firefox on panel when it running

You are right @sellchen !
It was a  "QT_QPA_PLATFORM=xcb" in my /etc/profile !
Can OP test if it worked and mark it as solved for futur people who might encounter the problem ?

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