How to make xrandr settings stick?

[Red Squirrel]

I'm pulling my hair over this, I am experimenting with multi monitor, starting with 2 but eventually want to try 3 (can't find much resources on getting this to work, but will just bite the bullet and buy a video card with 3 proper outputs and try it). I want the centre one to be primary, not the most left one, which is the default.

I found that this command can set the primary:

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xrandr --output HDMI2 --primary

Problem is, anything command line like that does not stick. I tried everything, such as putting it in /etc/rc/local (which does not even seem to execute at all) and various X related scripts, and nothing works. How do I get this setting to stick? I also want it to be for all users. I only have 1 user account but if I setup another I don't want to have to do it all over again.

Thanks in advance.

[Red Squirrel]

Anyone? There has to be a way to make a script run at startup in Mint? I'll settle for a user level script but I'm really hoping I can make this apply globally.

[roblm]

To make the xrandr command persist after a restart, add it to /etc/mdm/Init/Default
Use this command in the Terminal to open the file:

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gksudo pluma /etc/mdm/Init/Default

That command is for MATE. If using Cinnamon or Xfce, change pluma to gedit.

Add the line at the bottom, just above the last line that says "exit 0".

[Kendoori]

I use this script at startup: https://github.com/wertarbyte/autorandr

I also use some xrandr commands that has as shortcut for when I want to switch modes on the fly... like:
xrandr --output VIRTUAL1 --off --output DP3 --off --output DP2 --mode 2560x1600 --pos 0x0 --rotate normal --output DP1 --off --output HDMI3 --off --output HDMI2 --off --output HDMI1 --off --output LVDS1 --off --output VGA1 --off

I developed these "profiles" using:
http://www.ubuntugeek.com/arandr-a-simp ... randr.html

[I2k4]

I create an ".xprofile" file in Home and paste in three lines, as shown here:

http://ubuntuforums.org/showthread.php? ... ost8732038

Note that .xprofile starts with a dot and has no filetype suffix, and must be made executable in file properties. Works perfectly in Cinnamon and XFCE - resolution changes to your settings during the boot process.

Of course you need your own proper settings for the script. I get those with the command

cvt 1900 1200

The result provides the "Modeline" input for the three lines - you can see it finds 1904 instead of standard 1900 on my Samsung screen:

# 1904x1200 59.93 Hz (CVT) hsync: 74.61 kHz; pclk: 191.00 MHz
Modeline "1904x1200_60.00" 191.00 1904 2032 2232 2560 1200 1203 1213 1245 -hsync +vsync

Good luck.