Difference between revisions of "Adjust Resolution for Raspberry Pi"

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1)Define a custom CVT mode add the following lines below #hdmi_force_hotplug=1.<br> hdmi_cvt=1920 1080 60 3 0 0 0<br>
 
1)Define a custom CVT mode add the following lines below #hdmi_force_hotplug=1.<br> hdmi_cvt=1920 1080 60 3 0 0 0<br>
 
'''hdmi_cvt=<width> <height> <framerate> <aspect> <margins> <interlace>'''<br>
 
'''hdmi_cvt=<width> <height> <framerate> <aspect> <margins> <interlace>'''<br>
 
+
{| class="wikitable"
Value Default Default
+
|Value |Default |Default
width (required) width in pixels
+
|-
height (required) height in pixels
+
|width |(required) |width in pixels
framerate (required) framerate in Hz
+
|-
aspect 3 aspect ratio 1=4:3, 2=14:9, 3=16:9, 4=5:4, 5=16:10, 6=15:9
+
|height |(required) |height in pixels
margins 0 0=margins disabled, 1=margins enabled
+
|-
interlace 0 0=progressive, 1=interlaced
+
|framerate |(required) |framerate in Hz
rb 0 0=normal, 1=reduced blanking
+
|-
 +
|aspect |3 |aspect ratio 1=4:3, 2=14:9, 3=16:9, 4=5:4, 5=16:10, 6=15:9
 +
|-
 +
|margins|0 0=margins disabled, 1=margins enabled
 +
|-
 +
|interlace|0 |0=progressive, 1=interlaced
 +
|-
 +
|rb |0 |0=normal, 1=reduced blanking
 +
|}
 
<br>
 
<br>
 
2)Find the following lines (If there is a "#" mark at the beginning of any of the three lines, which means they are comments, delete the mark. The asterisk "*" represents the value.<br>
 
2)Find the following lines (If there is a "#" mark at the beginning of any of the three lines, which means they are comments, delete the mark. The asterisk "*" represents the value.<br>

Revision as of 10:40, 20 February 2019

If you are using Raspberry Pi with the screen, you may encounter incomplete display, with black space around. that would be wrong resolution.
Step 1: Open config.txt
Connect a mouse and a keyboard to your Raspberry Pi. Click open the Terminal, and type in the command to open config.txt

	sudo leafpad /boot/config.txt	

Step 2: Modify the config.txt file
Now the file config.txt is opened.
1)Define a custom CVT mode add the following lines below #hdmi_force_hotplug=1.
hdmi_cvt=1920 1080 60 3 0 0 0
hdmi_cvt=<width> <height> <framerate> <aspect> <margins> <interlace>

Default |Default
(required) |width in pixels
(required) |height in pixels
(required) |framerate in Hz
3 |aspect ratio 1=4:3, 2=14:9, 3=16:9, 4=5:4, 5=16:10, 6=15:9
0 0=margins disabled, 1=margins enabled
0 |0=progressive, 1=interlaced
0 |0=normal, 1=reduced blanking


2)Find the following lines (If there is a "#" mark at the beginning of any of the three lines, which means they are comments, delete the mark. The asterisk "*" represents the value.
hdmi_group=*
hdmi_mode=*
hdmi_drive=*
3)Modify the value, like this:
hdmi_group=2
hdmi_mode=87
....
hdmi_drive=2
hdmi_group=2 means DMT (Display Monitor Timings; the standard typically used by monitors)
hdmi_mode=87 indicates the resolution mode we set before.
hdmi_drive=2 selects the Normal HDMI mode.

For more details about configuring config.txt, refer to Raspberry Pi official website: https://www.raspberrypi.org/documentation/configuration/config-txt.md.

After the modification is done, save, exit then reboot your Raspberry Pi and enjoy.