Seeing the support period about to end for 11.04, I made the jump to 11.10. Now having done so I'm finding several problems:
1) No GRUB menu. Just a blank purple screen as I wait for the login screen. Not an emergency, but I'd like the option of other modes/previous kernels should something go wrong in the future.
2) Reduced screen resolution. I run an nVidia 5600 card with 256 MB and a Dell E773c monitor. Right now the best I can manage is 1024 x 768 when under 11.04 it could manage 1280 x 960. It's a noticeable and aggravating difference. xrandr tells me that 1024 x 768 is now as high as it goes, and resolution controls on my nVidia settings control panel are disabled.
3) Periodic failure to power down. One out of every five times or so the shutdown command takes me to the login screen instead of shutting down, and from there "Shut Down" does nothing.
I'm running the UI on GNOME instead of Unity. If anyone can point me in the right direction for any of these problems I'd greatly appreciate it.