After entering in sleep mode, when I log back in again, the icons in the dock have disappeared. I'm using Dash to Dock extension.
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It is even more frustrating the fact that I can't even move between windows using alt+tab - it's like all open windows are also gone.
I upgraded from Ubuntu 21.04 few days ago.
Is there any solution?
The reason is that your extension is not compatible with the version of Gnome Shell that comes with your upgraded Ubuntu version.
If you install software outside of the official repositories, then you are responsible for whether it works or not. Dash to Dock is not supported software in Ubuntu. Thus, when you upgrade to a newer Ubuntu version, it may break.
Remove the Dash to Dock extension. If there is an updated version, you may take the responsability to install that one instead. However, it is safer to just use the Ubuntu Dock extension. That is based on Dash to Dock and packaged specifically to work with your current Ubuntu version.
