Every couple of days, a pixel roughly in the center of my screen gets stuck on white. It can be unstuck by restarting X, or by logging out and back in. However it remains stuck when I call xrefresh.Is there any way of getting X to do a harder refresh than just calling xrefresh, but something short of restarting X (which kills all programs)? Or any ideas about the actual nature of the problem?This is xubuntu 14.04, video is Mobile Intel GMA 4500MHD.
Stuck pixel on X
xorg;x11