Thank you everyone for your replies. >From last night, I have tried different versions of kernel + Nvidia driver to pinpoint the bug, and the culprit is the whole 260.x.x series drivers. Every driver from 180,195 and 256 series works fine on any kernel version. but the 260.19.04,260.19.06,260.19.12 does not work with any combination.Guess the 260 series does not like the 8400GS card (:. On searching the nvidia forum, i see many regressions with 260 series drivers.I use the nvidia solely for VDPAU otherwise i can use the intregated card with nv or nouveau and kick the last closed-source out of my box .
