It is happening on a couple of the computers in a classroomful of supposedly identical ones, but I'll check out the video cards when I go in tomorrow .
Thanks for the prompt advice!
Hi, I was wondering if anyone here would have any idea why only some lines are showing up when I draw a sketch?
They are all actually there, as you can manipulate them and the cursor turns into a line when you roll over them, but about half of all lines will stay invisible. As you can imagine...
