Anyone else having any issues with video under an Nvidia card? The weird experience I am seeing is when my desktop has gone to sleep and I wake it up, the screen doesn't refresh properly, it's a completely black, blank screen. But, I can move windows that are already open and the screen will refresh. See the screenshot I have include, if it helps.
try changing your software sources download location to the “Main server” (if not already set) and run updates again, check the update guide above for more info if you don’t know how to do it.
Yes it is but if it is only happening when coming out of sleep, it may well not help you at all?. I don't use such things as suspend or hibernate because they have long caused problems in Ubuntu!. One of those things they have never really got working correctly?.