I have a computer with a new Ubuntu install and I am having a slight issue. After a period of time, the monitor turns black and the computer seems to be in a type of suspend/power save mode. Moving the mouse or pressing keys on the keyboard doesn't wake the computer, neither does a quick press of the power button. The computer is still accessible via ssh from another computer, but I can't get it to wake up.

I had left it in the middle of running a program so I'm hoping I can find a way to wake it up without having to restart then change some setting. Thanks for any help!

If it is a laptop try searching for laptop-mode setup.
Maybe it is a video driver issue? Is it running ok?

Did you mean "After a period of time of inactivity" or any period of time, even when when you're working? Is it a constant period of time?




Sorry for my broken english.

Sorry, that was vague wasn't it? I meant after a period of inactivity. I usually have my computers sleep or at least shut the screen off after an hour, but with this linux box I can't seem to find a way to wake it back up.

And it is a desktop, everything seems to run fine except this issue. I will probably end up running this computer headless, so it probably isn't a huge issue, but I figured I would check with the community to see if it was a common enough issue that someone had a remedy. Thanks!

I don't know a lot about the subject, but I know that after inactivity Xorg eventually puts you system into standby mode, which powers down the monitors. This is a good thing, when it works correctly. If it isn't, you can disable it with directions like these:

http://www.randombugs.com/linux/disa...g-xserver.html

I'm not sure about saving your current session, sorry.

Try a different video card.
Yes, I know it sounds lame, but I something similar happen on the machine in our sewing room. Her ladyship kept complaining, and eventually I saw it happen when I was updating it. Tossed an old card in I had lying around, and it went away.
The card was so old, it convinced me to update the entire box (hardware-wise) pretty soon after.

I can only guess the card was generating (heaps of) spurious interrupts, and getting in the way of everything else.

I have a box that does this, not sure why. It's when the blank screensaver activates after 10 minutes, sometimes it will come back when I move the mouse or hit a key on the keyboard, but usually it doesn't respond at all. For me, pushing Ctrl+Alt+F2 to switch to a terminal, then Ctrl+Alt+F7 to switch back to X, will always wake it up.