How to set screen resolution “1920x1080_60.00” permanently

Software PureOS
1

Hi,
I have a 34 inch LG monitor. Its screen resolution “1920x1080_60.00” .But normal screen resolution is 1024x768. I have set the screen resolution “1920x1080_60.00” by running the following Xrandr

xrandr
cvt 1920 1080 60
xrandr --newmode “1920x1080_60.00” 173.00 1920 2048 2248 2576 1080 1083 1088 1120 -hsync +vsync
xrandr --addmode DP-1 “1920x1080_60.00”
xrandr --output DP-1 --mode “1920x1080_60.00”

But after restart the system will become 1024x768 screen resolution. I have run the file every time to get “1920x1080_60.00” screen resolution.

Kindly help to me how to solve the problem permanently.

Thanks
Sakthi