I upgraded from ubuntu 16.04 to 18.04, and disabled Wayland and enabled the Xorg display. I use the xfce desktop on a Lenovo T430s. After a few seconds of inactivity, my Logitech USB mouse is unresponsive until I move it around for a couple of seconds and/or depress a button or the center wheel. The problem is "fixed" by unplugging and re-plugging in the USB dongle … until the next reboot.
- The problem does not happen with the default ubuntu desktop.
- The problem does not depend on which USB port the dongle is plugged
- The same behavior occurs for two different Logitech mouse/dongle
- I never had this issue using xfce with ubuntu 16.04.
Thanks in advance for any suggestions!