I'm using a non-Apple USB keyboard. Ctrl+Shift+F12 was able to put the display to sleep. After reinstalling Lion now it doesn't do anything. How do I fix it? I did a reset on SMC and PRAM.
I don't want to install a 3rd party app to get something to work that had originally worked without one. Option+CMD+F12 puts the system to sleep. I'm not sure why Ctrl+Shift+F12 stopped working. Ctrl+F12 also works to bring up the shutdown/reset/sleep option.