I get the same info, with cat /proc/mtrr with both drivers. So that isn't the problem with mine I think.
reg00: base=0x00000000 ( 0MB), size= 512MB: write-back, count=1 reg01: base=0x20000000 ( 512MB), size= 256MB: write-back, count=1 reg02: base=0x2f800000 ( 760MB), size= 8MB: uncachable, count=1 reg03: base=0xfeda0000 (4077MB), size= 128KB: write-through, count=1 reg04: base=0xc0000000 (3072MB), size= 256MB: write-combining, count=1 But I get those weird bios mem errors in Xorg.0.log (WW) I810(0): xf86AllocateGARTMemory: allocation of x pages failed (Cannot allocate memory) -- performance issue in Edgy with i810 driver https://launchpad.net/bugs/61306 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs