I have an dell inspiron n5110 with nvidia graphic. It has 12.10 and windows installed on. It was working fine until a morning when I turned it on an message appeared which said ubuntu cannot found your graphic (sth like that) and it asked if it could reconfigure the graphic card. i have pushed the button nothing actually happened After a reset ubuntu graphic interface started nice but when i was going to suspend in any way, apparently, nothing happens. even the screen doesn't turn black. I should mention after switching to windows it couldn't find my nvidia graphic but after reinstalling the driver i could sleep my laptop in windows. But it still not suspending in Ubuntu.