Title: Allow wide resolution on intel graphics laptop
       Author: Solène
       Date: 22 November 2017
       Tags: hardware
       Description: 
       
       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 the **gtf** command:
       
           $ gtf 2560 1080 59.9
       
       Keep 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.