I also have this problem.
Ubuntu 21.10, Dell 7520 with Nvidia, single monitor HDMI connection.
ps: I do have a logitech mouse with dongle and I did not test if it matters. I noticed this behavior about 1-2 days ago. Previous it did not seem to be an issue. Not sure if it's due to an update or a new package.
I also have this problem.
Ubuntu 21.10, Dell 7520 with Nvidia, single monitor HDMI connection.
ps: I do have a logitech mouse with dongle and I did not test if it matters. I noticed this behavior about 1-2 days ago. Previous it did not seem to be an issue. Not sure if it's due to an update or a new package.