Ubuntu Resolution Stuck at 1024×768

Ubuntu Display Resolution Problem

Assalamualaikum. In this article, I will share problems that often occur on Linux, is the External Monitor Ubuntu Resolution Stuck at 1024×768, Can’t be Full. even though my external monitor has a resolution higher than that.

Look at the following picture. My external monitor is on number 2 and the Resolution is only 1024×768 and there is no option above it.

Linux Monitor Stuck at 1024x768

Why did it happen and how to fix it? Read the article below carefully.


Ubuntu Missing Resolutions For My Second Monitor

When this article was written, I used an external Flat Panel Monitor from Lenovo, namely the Lenovo D19-10 with the following specifications:

  • Resolution is 1366 x 768
  • Panel Size 18,5 “
  • Connectivity Support is VGA dan HDMI

When this article was written, I used a Lenovo T400 Laptop as the main monitor and a Lenovo D19-10 as an external monitor using a VGA cable. Look at to the following picture:

Linux Monitor Stuck at 1024x768

How to Fix it

1. Check Monitor Name

So that later we can adjust the resolution of our monitor, we must first check the name of our external monitor that is read by the system, the command is:

xrandr -q

The result of the command on my system is:

neon@neon:~$ xrandr -q
Screen 0: minimum 320 x 200, current 1280 x 800, maximum 8192 x 8192
LVDS-1 connected 1280x800+0+0 (normal left inverted right x axis y axis) 303mm x 189mm
   1280x800      60.08*+  59.99    59.97    59.81    50.00    59.91  
   1280x720      60.00    59.99    59.86    59.74  
   1024x768      60.04    60.00  
   960x720       60.00  
   928x696       60.05  
   896x672       60.01  
   1024x576      59.95    59.96    59.90    59.82  
   960x600       59.93    60.00  
   960x540       59.96    59.99    59.63    59.82  
   800x600       60.00    60.32    56.25  
   840x525       60.01    59.88  
   864x486       59.92    59.57  
   800x512       60.17  
   700x525       59.98  
   800x450       59.95    59.82  
   640x512       60.02  
   720x450       59.89  
   700x450       59.96    59.88  
   640x480       60.00    59.94  
   720x405       59.51    58.99  
   684x384       59.88    59.85  
   680x384       59.80    59.96  
   640x400       59.88    59.98  
   576x432       60.06  
   640x360       59.86    59.83    59.84    59.32  
   512x384       60.00  
   512x288       60.00    59.92  
   480x270       59.63    59.82  
   400x300       60.32    56.34  
   432x243       59.92    59.57  
   320x240       60.05  
   360x202       59.51    59.13  
   320x180       59.84    59.32  
VGA-1 connected (normal left inverted right x axis y axis)
   1024x768      60.00  
   800x600       60.32    56.25  
   848x480       60.00  
   640x480       59.94  

In the above results, my internal monitor’s name is LVDS-1 and my external monitor is VGA-1.

We will use the name “VGA-1” for the next configuration.


2. Add a Resolution Value

Now, we will use the CVT command to make the resolution. CVT is a utility in Linux to be able to calculate display coordinates.

I want to make the resolution 1366×768, the command is:

cvt 1366 768

*You can replace the value 1366 768 with the maximum resolution of the monitor you are using.

After the command above is executed, later the system will return the parameters according to the resolution that we provide. Examples are as follows:

neon@neon:~$ cvt 1366 768
# 1368x768 59.88 Hz (CVT) hsync: 47.79 kHz; pclk: 85.25 MHz
Modeline "1368x768_60.00"   85.25  1368 1440 1576 1784  768 771 781 798 -hsync +vsync

3. Create a folder “xorg.conf.d”

By default, the xorg.conf.d folder is not available on Linux, so we have to create it using the command:

sudo mkdir -v "/etc/X11/xorg.conf.d/"

After the xorg.conf.d folder has been created, enter the folder with the command:

cd /etc/X11/xorg.conf.d

4. Create a file “10-monitor.conf”

We will create a file named 10-monitor.conf in the xorg.conf.d folder. Where later in this file we will list the resolution we want. This resolution list will appear in the display settings.

The command to create the 10-monitor.conf file is:

touch "10-monitor.conf"

When finished, open the file with the command:

sudo xed 10-monitor.conf

*xed is my text editor. You can replace it with another text editor e.g. gedit, etc.

Fill in the 10-monitor.conf file in the following format:

Section "Monitor"
        Identifier "VGA-1"
        Modeline "1368x768_60.00"   85.25  1368 1440 1576 1784  768 771 781 798 -hsync +vsync
EndSection

*Identifier is the name of the monitor that is detected on our computer. Currently my monitor name is “VGA-1”

*Modeline is a copy of point 2 above when adding resolution. The different resolutions we add, the different parameters. Please fetch the Modeline parameters from the Terminal.


5. Save & Reboot

After you enter the program line, please save and reboot / restart your linux.


6. Open Display Setting

After completing the reboot, now enter the display settings and you can see that there is already a resolution according to what you want. Please select and press Apply.

Linux Monitor Stuck at 1024x768

Wasn’t what I entered 1366? why is the result 1368? Well, it’s given automatically by the system, so let it be.

We hope that the External Monitor Not Full Linux, Only 1024×768 article is useful.

Read more:
> Types of line-ending serial monitor Arduino
> Install A2DP Ubuntu and get Noise cancelling Work Again
> Display Time Every Second Arduino RTC

Source : Eksternal Monitor Tidak Penuh Linux, Hanya 1024×768

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