I use Arch Linux. When I connect an external monitor to my ThinkPad, the cursor moves erratically on the touchpad. It moves slowly, stutters, doesn’t go where I want it to, or goes past the target. There’s no problem with the mouse. The touchpad doesn’t always cause problems—it happens sometimes, and it’s very frustrating.

  • limelight79
    2·
    2 days ago

    I’ve had this happen, I swear it was a ground problem. Does it behave the same if you are plugged into power? Also, is the mouse connected when it’s happening?