XFree86-Mach64 gives a strange display artifact on a Dell Inspiron 3800 laptop. About one inch from the right edge of the screen there is a sort of a dancing line, and there also seems to be a dancing line about half an inch of the right edge of each window. There also seems to be 'random jitter' showing up in the top right of each window. These artifacts get denser the more you move the window to the right. On the left half of the screen, there is - oddly enough - no such jitter at all. Cute detail is that the same laptop gives nada display problems under NT in the same resolution (1024x768) in any color depth. The artifact also disappears in linux when the X server is set to 16 bit mode.
I can't reproduce this with the latest release with either of the two Mach64 based cards I tried. Have you updated to the latest errata or our current release? If you are using the latest errata, please attach your config and X server logs to the bug report using the link below.
Closing bug due to lack of information.