Comment 5 for bug 495553

I tried an experiment: I put the xorg.conf file back in /etc/X11, but changed 'openchrome' to 'vesa', and restarted. The screen ends up being split the same way, with the left-hand part of the logical screen showing in the middle, but the mouse pointer position is the same as the logical position: e.g. moving the mouse all the way to the left or right moves the pointer to the center of the screen, and I can actually click on icons etc where they appear, instead of on the opposite side of the screen.

Running the openchrome driver, the screen looks exactly the same, but in order to point at something on the screen, I have to move the pointer to the corresponding position on the opposite half of the screen.

In either case, the display has the left and right halves reversed, which looks like an address bit inverted. With the vesa driver, mouse position corresponds to screen position for other objects, while with the openchrome driver, mouse position corresponds to physical position on the display. Apparently cursors are handled differently by the two drivers.