Set default screen resolution in Lubuntu

I'm running Lubuntu 14.04.5 LTS and got a really annoying problem. I can set the screen resolution using rxandr or axrandr but every time I restart the computer it changes back.

The computer is used as a HTPC. It sets the default resolution to 4K but I want to use

FullHD = 1920x1080

The computer consists of the following components:

• KINGSTON SSDNOW V300 60GB SSD 7MM SATA/600 MLC
• KINGSTON 4GB 1600MHZ DDR3 CL9 DIMM HYPERX BLU
• INTEL CORE I3 4330 3.5GHZ 4MB S-1150
• GIGABYTE GA-H87N-WIFI H87 S-1150 MINI-ITX

How can I set the default resolution in Lubuntu?

1 Answer

I would modify the resolution with

xrandr -s 1920x1080

There is a file (maybe empty) or you can create the file

~/.config/lxsession/Lubuntu/autostart

You can add the xrandr command line into that file,

for example with the editor nano (text mode) or leafpad (GUI).

and reboot.

Edit June 2022: Newer Lubuntu versions (for example 22.04 LTS) contain the directory

"$HOME"/.config/autostart

where you are supposed to put a desktop file. This is a similar structure for autostart as in standard Ubuntu Desktop.