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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?

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  • Normally Lubuntu sets the highest possible resolution automatically. What resolution do you get automatically, and what resolution do you want? Please post the output of xrandr. And please describe your computer. The more details, the better. Otherwise we can only give general advice. – sudodus Jan 3 '17 at 17:48
  • Thanks for your answer. I updated my original post with more information. – Andreas Back Jan 3 '17 at 18:00
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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.

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