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fc18 - disable notebook screen when external screen is plugged in

asked 2013-01-24 10:30:17 -0500

jeffunit gravatar image

updated 2013-01-24 22:20:13 -0500

Every time I boot my notebook, the screens come up in 'span' mode. This makes many windows pop up on my notebook screen which is generally inaccessable. What I do, is start up the monitor configuration applet, and then disable the notebook screen. This is difficult, as my notebook is in a rack.

What I would like, it to automatically disable the notebook screen whenever an external screen is plugged in. I would like this to happen before the login prompt.

I am using the lxde spin of fedora 18, 32 bit. How do I do this?

Although I can write code, the first 2 solutions seem needlessly complex. How about a way to start the external screen in clone mode, rather than span mode. This would need to happen before login, as I can't even see the login username screen on my external monitor. At least that way, I will be able to see what is being displayed without physically going to my notebook computer.

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answered 2013-01-24 15:55:57 -0500

I did a quick search, and there are some good ideas found at that should get you started.

For Fedora, you might consider writing a systemd unit to handle monitoring and polling, or writing a udev rule, or some combination thereof.

Unfortunately, it doesn't seem like this use case is accommodated by the display configuration tool. You might consider filing an RFE - Request for Enhancement - bug against the package.

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answered 2013-01-24 14:46:45 -0500

ThomasMcA gravatar image

You may be able to do that by creating a custom service that runs an xrandr command.

The command man chkconfig explains how to create a service.

The command xrandr will show your connected video devices, their names, and the supported video devices.

The xrandr command might be something like this: xrandr --output CRT2 --mode 1680x1050

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Asked: 2013-01-24 10:30:17 -0500

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Last updated: Jan 24 '13