@PrakashKC: the attached patch should fix the problem; the problem occurs if the driver is built against Linux 2.6 kernels with support for multiple backends (Linux 2.6.11-bk3+), but configured w/o AGPGART
support. The patch application instructions are analogous to http://www.nvnews.net/vbulletin/showthread.php?t=47405
. An alternative to using this patch is to (re-)configure the kernel to include AGPGART
support (either as a loadable module or statically linked into the kernel). Please let me know if there are any other problems.