Once or twice a week I have no working pen input at the login screen when coming back from sleep mode. This wasn't a problem because the touch input never failed. But lately I've stopped using the touch input because it interferes with most of the artsy programs I use. I've had to use a usb keyboard or mouse to get back on or lose all my work and possibly harm the machine with a hard shutdown. Now that I'm traveling I don't have ready access to a usb keyboard or mouse which makes matters worse. So my questions are: 1. Why is this happening? 2. Is there anything I can do using only the case buttons to get the pen back or enter my password?