Difference between revisions of "Adjust Resolution for Raspberry Pi"

From Wiki
Jump to: navigation, search
Line 8: Line 8:
 
'''hdmi_cvt=<width> <height> <framerate> <aspect> <margins> <interlace>'''<br>
 
'''hdmi_cvt=<width> <height> <framerate> <aspect> <margins> <interlace>'''<br>
 
{| class="wikitable"
 
{| class="wikitable"
|Value |Default |Default
+
|Value
 +
|Default
 +
|Default
 
|-
 
|-
|width |(required) |width in pixels
+
|width
 +
|(required)
 +
|width in pixels
 
|-
 
|-
|height |(required) |height in pixels
+
|height
 +
|(required)
 +
|height in pixels
 
|-
 
|-
|framerate |(required) |framerate in Hz
+
|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
+
|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
+
|margins
 +
|0
 +
|0=margins disabled, 1=margins enabled
 
|-
 
|-
|interlace|0 |0=progressive, 1=interlaced
+
|interlace
 +
|0
 +
|0=progressive, 1=interlaced
 
|-
 
|-
|rb |0 |0=normal, 1=reduced blanking
+
|rb
 +
|0
 +
|0=normal, 1=reduced blanking
 
|}
 
|}
 
<br>
 
<br>

Revision as of 10:41, 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>

Value Default Default
width (required) width in pixels
height (required) height 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
margins 0 0=margins disabled, 1=margins enabled
interlace 0 0=progressive, 1=interlaced
rb 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.