Ubuntu – How to override the screensaver settings in the MATE desktop:

matescreensaver

I installed mate onto Ubuntu 14.04. Before installing mate, I had the Unity and LXDE (Lubuntu Packages) desktop enviroments installed. I installed mate and rebooted. After that, I got two network bars, in LXDE and Unity. I decided to try mate and noticed only one network bar, and I checked the startup applications and disabled the one that didn't have (MATE) at the end, because since the mate one was required for mate, and also worked with Unity and LXDE, why would I need the stock one? The reason I decided to mention this is to explain the picture and get to the point faster with less questions as to why I have two network applets set to start in the picture. I kept the stock one in case I want to uninstall mate, which I most likely won't do. So, my question is, what do I need to disable to prevent the computer from going to sleep? I use an INSIGNIA HDTV I recently purchased near June or July, and if the PC goes to sleep, the TV says "No Signal" and then turns off after about 5 minutes? So, I have to use a remote to power it on, as if I move the mouse while the TV screen is off, nothing happens. I'm assuming the power manager does this, but I don't know what would happen if I turned it off. My PC is also hooked to my TV standard? (Not sure what you call it, but it isn't! DVI or HDMI) Any help?
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Other things hooked to the TV:
Nintendo Wii (and a shiny new PS4 I got for Christmas)

(No TV signal is hooked to the TV at this moment.)

Also, I couldn't find this setting in the MATE desktop, but here's a screenshot of System Settings> Brightness & Lock.

Also, sorry about this but I forgot to add that this only happens in the MATE desktop, not the other two desktops.

enter image description here

Best Answer

There are two settings you can work with:

  • System Settings -> Brightness & Lock -> Turn screen off when inactive for
  • System Settings -> Power -> Suspend when inactive for

The first will signal the display to turn itself off, the second will put the computer into a sleep state. I'm assuming you're referring to the first behavior.

That being said, remember that TVs don't behave the same way that monitors do. A monitor will go to sleep ("suspend") and wake up when instructed to, but most TVs don't implement suspend mode: they will display a "No Signal" message for a few minutes and then turn off.

You'll need a computer monitor if you want display suspend functionality.

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