Issue solved. I have really no clue to why. I switched to xubuntu, no change. I tried to switch off either monitor, no change. I checked all usb plugs, no change. I moved the mouse transmitter to another port, and then it all worked. I put it back into the old port, everything works. Lets see a few days, it may have been electrical contact.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1734424 Title: Mouse cursor jumps to top of screen when moved To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1734424/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs