I just installed Ubuntu 5.10 today and all is going well apart from the hibernate feature. I use this very often when booting Windows to print as it does speed booting up significantly but I can't get Ubuntu's hibernate feature to work properly.
I have an nVidia 5200 graphics card and so, I followed the instructions here: https://wiki.ubuntu.com/NvidiaLaptopBinaryDriverSuspend
The nVidia driver itself is working correctly.
When I try to hibernate, the computer shuts down fine but when recovering from hibernation, it just hangs and the screen is filled with alternate black and white vertical stripes and I have to turn it off and back on again then reboot.
Does anybody have any ideas to try?