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Solution anyone for a newb? I connect my notebook to external monitor with HDMI. I switch off screen notebook since I'm not using it. Ubuntu 15.04 remembered this setting after reboot, but with 15.10 I have to change this setting every time. Does anyone know how to fix this?

Jacob Vlijm
  • 85,475
FrankThuis
  • 23

1 Answers1

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The issue is pretty sure the result of a bug, but easily fixed on log in.

What to do

  1. Copy the script below into an empty file, save it as set_screen.py

    #!/usr/bin/env python3
import subprocess
import time

#--- set the name of your internal screen below
internal = "DVI-I-1"
#---

time.sleep(10)

extr = [l.split()[0] for l in subprocess.check_output("xrandr").decode("utf-8").splitlines() if " connected" in l\
       and not internal in l]
if extr:
    subprocess.Popen(["xrandr", "--output", internal, "--off", "--output", extr[0], "--auto"])

  2. Get your internal screen's name: open a terminal window: press Ctrl+Alt+T, and type the command 

    xrandr

    and press Enter. Among the lines in the output, there is one line looking like:

    DVI-I-1 connected 1680x1050+0+0 (normal left inverted right x axis y

    You need to look at the first string, like DVI-I-1, this is your internal screen's name (obviously, you do not pick the one with HDMI in it :) )

  3. Enter the name you found in the head of the script, in the line:

    internal = "DVI-I-1"

    between quotes, like in the example.

  4. Test- run the script with the command (again, from the terminal window):

    python3 /path/to/set_screen.py

    (where you obviously need to replace /path/to by the actual path) After ten seconds, the internal screen should shut down, while the external screen stays.

  5. If all works fine, add it to Startup Applications: open Dash > Startup Applications > Add. Add the command:

    python3 /path/to/set_screen.py

From now on, within a few seconds after log in, your internal screen will shut down.

Jacob Vlijm
  • 85,475