Seems like a card issue to me. I just put in my old 5500 and the blocks are there. I was running driver 169.07 when I took this.
while the issue is still open, we have at least now clear evidence from THREE independent (lower end) cards for the blocks:
- FX 5900 Ultra
- FX 5500
- Quadro NVS 110M (G72 chip) ~ FX 7300
while G80 cards ONLY have been shown to work fine with Chris' code so far.
We also used various drivers, in all cases quite recent ones.
There is a small chance that there is a common driver bug in those recent drivers is responsible.
There is also a clear PERSISTENT driver bug in my Quadro NVS 110M driver, since at least TWO driver updates by DELL and also in all relevant drivers from http://www.laptopvideo2go.com/
that require modification of the DELL *.inf file.
I have reported about this bug in detail before.
http://www.celestiaproject.net/forum/viewtopic ... ptop#88449
It consists of a reproducable extra "mirror dialog popup" appearing only in fullscreen mode
. As a reminder, here is a lousy screendump I made with my handy. That second popup on the right should be absent!
So it might be worthwhile to try a considerably older driver with these older cards.