black screen on f16 laptop after idle

[Dave Jones]

On Tue, Oct 25, 2011 at 01:54:02PM -0600, Peter Gueckel wrote:
 > I powered up my laptop. The kdm screen was there, but I did not log in. After 
 > some time, perhaps 20-30 minutes, I was ready to log in. The screen was black, 
 > but that occurs after idle, so no problem, just wiggle the mouse. Nothing 
 > happened. The screen stayed black. I know the password field was focused, so I 
 > typed it and the computer logged in. Still black screen. I typed ctrl-alt-f2 and 
 > logged in as root. Still black screen. I typed reboot and the computer rebooted 
 > and I again had a visible screen.
 > 
 > How can I wake up the display after it has gone into a sleep mode?

well the good thing is that the machine is still alive when it comes back,
so you should have log files showing what happened on resume.

Start by filing a bug with those. Maybe there are kernel messages showing
something interesting.

What graphics card ?

	Dave