I discovered the problem. If I pres the "dual screen" button that comes on my think pad (F7), and I cycle a few times, I get the big screen and the laptop screen to go black with the cursor visible on both screens. Once I get in that mode, I can't get out of it until I reboot.
I discovered the problem. If I pres the "dual screen" button that comes on my think pad (F7), and I cycle a few times, I get the big screen and the laptop screen to go black with the cursor visible on both screens. Once I get in that mode, I can't get out of it until I reboot.