Title : Allow wide resolution on intel graphics laptop
Author: Solène
Date  : 22 November 2017
Tags  : hardware

I just received a wide screen with a 2560x1080 resolution but xrandr
wasn't allowing me to use it. The intel graphics specifications say
that I should be able to go up to 4096xsomething so it's a software
problem.

Generate the informations you need with **gtf**

    $ gtf 2560 1080 59.9

Takes only the numbers after the resolution name between quotes, so in
`Modeline "2560x1080_59.90" 230.37 2560 2728 3000 3440 1080 1081 1084 1118 -HSync +Vsync` 
keep only `230.37 2560 2728 3000 3440 1080 1081 1084 1118 -HSync +Vsync`
  

Now add the new resolution and make it available to your output (mine
is HDMI2): 

    $ xrandr --newmode "2560x1080" 230.37 2560 2728 3000 3440 1080 1081 1084 1118 -HSync +Vsync
    $ xrandr --addmode HDMI2 2560x1080

You can now use this mode with arandr using the GUI or with xrandr by 
typing `xrandr --output HDMI1 --mode 2560x1080`

You will need to set the new mode each time the system start. I added
the 2 lines in my ~/.xsession file which starts stumpwm.