I have a Latitude CPi with the NeoMagic 2160 chipset which did not run under 4.0.2, but I am currently using 4.0.3 with no problems. I don't know if the fix you mention is specifically for the 2070 chipset, if not I would try 4.0.3.
Sorry, I don't know about the 4.1.0. I found it works best to a minimum install from CD and then use dselect to update the system and install the latest version of X. - mike <snip> > After reading through the neomagic mailing list on xfree86.org, it > seems the best solution would be to install either XFree 4.1.0 or > revert to 3.3.6. (4.0.3, although included in unstable, doesn't > include the fix.) > > I'd prefer updating to 4.1.0, but am not aware of any Debian packages > that exist. Does anyone know where I could find 4.1.0 .debs? > <snip> > Colin McMillen