Gnome-shell: clutter_actor_allocate: assertion '!isnan (real_allocation.x1) & !isnan (real_allocation.x2) & !isnan (real_allocation.y1) & !isnan (real_allocation. journalctl -p warning -xef return gnome-shell: clutter_actor_allocate: assertion '!isnan (real_allocation.x1) & !isnan (real_allocation.x2) & !isnan (real_allocation.y1) & !isnan (real_allocation.y2)' failed On 20.04 with gnome-shell 3.36.9 it seems to be a bug that slow down everything when zoom is enabled. Orca: Orca is a free, open source, flexible, and extensible screen reader that provides access to the graphical desktop via speech and refreshable braille. The following command is run by typing it in and pressing Enter. AFAIK there is no way (as in XFCE) to smoothly zoom in/out with mousewheel/scroll. In the file manager, right-click a folder and choose Terminal or Open in Terminal to open the terminal in the location of your choice.Does not start to zoom where the pointer is located, and in general you might find it very buggy.Screenshot of an area ( Ctrl + Shift + PrntScrn seems to be broken when zoom is enabled.You can change the shortcuts on Settings > Devices > Keyboard and zoom options on Settings > Universal access settings > Zoom: On some non-English keyboard layouts + won't work, try 0 instead. Super+ Alt+ +/ -: To increase/decrease zoom.Click Accept to install Zoom and the required dependencies. Right click the RPM installer file, select Open With, and click Install/Remove Software. Super+ Alt+ 8: Toggle zoom enabled/disabled How do I download Zoom on Ubuntu Using a graphical installer Open the download location using a file manager.

With GNOME Shell (instead of Compiz) as Window Manager ( wmctrl -m):

Zoom app download for ubuntu