2
votes
1answer
727 views

How to change the Xorg gamma/brightness?

I'm trying to play a game (Deus Ex) which I have to modify the brightness since it is very dark in my ambiance. The game has a "Brightness" setting, but lately it doesn't work. I tried to figure out ...
5
votes
3answers
2k views

How does X-server calculate DPI?

From Xfce Docs: In case you want to override the DPI (dots per inch) value calculated by the X-server, you can select the checkbox and use the spin box to specify the resolution to use when ...
1
vote
0answers
182 views

Setting KDE to crop the laptop's screen to match external VGA device's ratio

I have a laptop with 16:9 screen ration. Sometimes I need to attach it to a projector via VGA. The projector ratio is 4:3. I use System Settings->Hardware->Display and Monitor->Size & Orientation ...
4
votes
1answer
879 views

HDI: Dim the screen beyond the typical maximum?

I'm on a Dell Latitude E6320, and the screen doesn't get very dim. It's way too bright even when it's dimmed as far as Ubuntu will let it. How do I dim it more? For example, when you have this ...
2
votes
1answer
932 views

What is a framebuffer device and is it required to obtain a higher resolution?

I am running a gentoo guest OS on qemu-kvm. I can only get resolution of 800x600 in it. I want to be able to get a higher screen resolution. xrandr gives the following output : xrandr: Failed too ...
6
votes
2answers
1k views

How can I alter my Xorg config file to fix the screen distortion I am experiencing?

I have a system running FreeBSD 8.2-RELEASE-p2 with an LCD display attached capable of running at a native resolution of 1600 x 900. I have configured Xorg the way I think it should work, however the ...
1
vote
2answers
299 views

Fast switching between external and internal screen

Is there a solid way of using either X directly or KDM/GDM/KDE/Gnome to quickly switch between an external screen and modify the screen layout accordingly? I'm stealing the inspiration from Windows ...
2
votes
2answers
3k views

How to use command line to change brightness and color?

Is there any way to change the brightness and color? Using any command line tools? I am trying in Fedora and Ubuntu but no luck so far. Follow up: [command] [conneccted output] [effects R:G:B, ...
5
votes
2answers
4k views

How can I run a separate X session on a different physical display?

Here's what I need to do. I need to be playing a movie over HDMI to a television screen for my friends while I'm hacking on some personal projects over VGA to a smaller monitor. It's imperative that ...
1
vote
1answer
789 views

Step by step guide to setup display resolutions in xorg

The default xorg configuration file created does not allow me to set up the display resolution I want (1360x768). The auto configuration command xorg -configure didn't create the proper configuration ...