I upgraded the x11-video-driver-fglrx and X will no longer start, so I removed it and installed the proprietary driver from AMD. That worked, but the mouse cursor doesn't display, although the touchpad is actually working, I just can't tell where the pointer is except by observing what gets highlighted. Has anyone seen this behavior? This is a Toshiba L555D-7930 laptop with an ATI Radeon 4100. Any clues on how to diagnose this? Fortunately, I have another computer that works.