I've got KDE Neon 5.23 and it is regularly updated. Since last week anydesk doesn't start UI (it was working fine for 3 months). The version is 6.1.1 (anydesk_6.1.1-1_amd64.deb) and it works on Debian 11 (KDE 5.22).
The anydesk service is started and runs normally, but GUI doesn't show up.
When started from terminal I get this output:

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(anydesk:21090): Gtk-CRITICAL **: 16:27:51.387: IA__gtk_widget_set_tooltip_markup: assertion 'GTK_IS_WIDGET (widget)' failed

(anydesk:21090): Gtk-CRITICAL **: 16:27:51.388: IA__gtk_widget_set_tooltip_markup: assertion 'GTK_IS_WIDGET (widget)' failed

(anydesk:21090): Gtk-CRITICAL **: 16:27:51.391: IA__gtk_signal_connect_full: assertion 'GTK_IS_OBJECT (object)' failed

(anydesk:21090): Gtk-CRITICAL **: 16:27:51.391: IA__gtk_signal_connect_full: assertion 'GTK_IS_OBJECT (object)' failed

Does anyone has the same problems?

Could you update Plasma?. I have no issues with Plasma 5.23.2 and Anydesk 6.1.0

Operating System: openSUSE Tumbleweed 20211111
KDE Plasma Version: 5.23.2
KDE Frameworks Version: 5.87.0
Qt Version: 5.15.2
Kernel Version: 5.14.14-2-default (64-bit)
Graphics Platform: X11
Processors: 8 × Intel® Core™ i7-9700K CPU @ 3.60GHz
Graphics Processor: NVIDIA GeForce RTX 2060/PCIe/SSE2

Still not working, latest plasma installed and all updates.
However, I have dual boot with Debian 11 and Plasma 5.21 and there it works.
My KDE Neon version:

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Operating System: KDE neon 5.23
KDE Plasma Version: 5.23.4
KDE Frameworks Version: 5.89.0
Qt Version: 5.15.3
Kernel Version: 5.11.0-43-generic (64-bit)
Graphics Platform: X11
Processors: 8 × 11th Gen Intel® Core™ i7-1165G7 @ 2.80GHz
Memory: 31,1 GiB of RAM
Graphics Processor: Mesa Intel® Xe Graphics

Gave up after updating everything.
Downloaded old version of anydesk from their archive:
anydesk_5.5.6-1_amd64.deb

and now it works again.

For me works too

zbabac wrote:Gave up after updating everything.
Downloaded old version of anydesk from their archive:
anydesk_5.5.6-1_amd64.deb

and now it works again.

I have to do the same to make Anydesk works.

Also I created a VM and install Neon. Update everything and tha latest version of Anydesk works normally. Very strange.

I found the solution to this problem!

The cause (at least in my case) was adding a menu icon in the window title bar.
With this menu icon on windows title bar, Anydesk version 6.x does not open. Just remove it to get back to normal.

https://drive.google.com/file/d/1m2hL0VcfH7BOCAUpxGIcpSvYWgmFnxMQ/view?usp=sharing

csandrade87 wrote:I found the solution to this problem!

The cause (at least in my case) was adding a menu icon in the window title bar.
With this menu icon on windows title bar, Anydesk version 6.x does not open. Just remove it to get back to normal.

https://drive.google.com/file/d/1m2hL0VcfH7BOCAUpxGIcpSvYWgmFnxMQ/view?usp=sharing

I didn't have that icon. Adding and removing didn't help. Only reverting to the old version and then holding the package to prevent upgrade:

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sudo dpkg -i anydesk_5.5.6-1_amd64.deb
sudo apt-mark hold anydesk

Hello,

I have a similar issue. The diffrence is that the following error appear on terminal: "Aborted (core image recorded).
I have installed the last veriosn of the libpango library.

I tried install old versions of the anydesk (5.0.0-1 and 5.5.6-1), but won't start.

My System:
Operating System: Kubuntu 21.10
KDE Plasma Version: 5.24.2
KDE Frameworks Version: 5.91.0
Qt Version: 5.15.2
Kernel Version: 5.13.0-30-generic (64-bit)
Graphics Platform: X11
Processors: 8 × Intel® Core™ i7-2630QM CPU @ 2.00GHz
Memory: 7.7 GiB of RAM
Graphics Processor: Mesa DRI Intel® HD Graphics 3000



Thanks,
Marcelo Costa

Hi!

I ran into the same problem, and apparently, doing some research by going through the dependency list, I discovered that installing Anydesk didn't automatically require pango and pangox.
So, I manually installed them, and then it worked!
So running this should solve it:

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$ sudo apt install libpango1.0-0 libpangox-1.0-0

I'm running Kubuntu 21.10, and Anydesk 6.1.1.

Have a nice day!

Thanks fdcx.

Issue Solved!