Difference between revisions of "Adjust Resolution for Raspberry Pi"

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(→‎Step 2: Modify the config.txt file)
 
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If you are using Raspberry Pi with the screen, you may encounter incomplete display, with black space around. that would be wrong resolution.
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If you are using Raspberry Pi with the screen, you may encounter incomplete display, with black space around. that would be wrong resolution.<br>
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==Step 1: Open config.txt==
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'''Step 1: Open config.txt'''<br>
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Connect a mouse and a keyboard to your Raspberry Pi. Click open the Terminal, and type in the command to open config.txt
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Connect a mouse and a keyboard to your Raspberry Pi. Click open the Terminal, and type in the command to open config.txt<br>
 
  sudo leafpad /boot/config.txt
 
  sudo leafpad /boot/config.txt
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Step 2: Modify the config.txt file<br>
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'''Step 2: Modify the config.txt file'''<br>
 
Now the file config.txt is opened.<br>
 
Now the file config.txt is opened.<br>
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1)Define a custom CVT mode add the following lines below #hdmi_force_hotplug=1. hdmi_cvt=1920 1080 60 3 0 0 0
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1)Define a custom CVT mode add the following lines below #hdmi_force_hotplug=1.<br>
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hdmi_cvt=<width> <height> <framerate> <aspect> <margins> <interlace>
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        hdmi_cvt=1920 1080 60 3 0 0 0<br>
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'''hdmi_cvt=<width> <height> <framerate> <aspect> <margins> <interlace>'''<br>
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{| class="wikitable"
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|Value
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|Default
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|Default
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|-
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|width
 +
|(required)
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|width in pixels
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|-
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|height
 +
|(required)
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|height in pixels
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|-
 +
|framerate
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|(required)
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|framerate in Hz
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|-
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|aspect
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|3
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|aspect ratio 1=4:3, 2=14:9, 3=16:9, 4=5:4, 5=16:10, 6=15:9
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|-
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|margins
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|0
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|0=margins disabled, 1=margins enabled
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|-
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|interlace
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|0
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|0=progressive, 1=interlaced
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|-
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|rb
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|0
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|0=normal, 1=reduced blanking
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|}
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<br>
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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>
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hdmi_group=*<br> hdmi_mode=*<br> hdmi_drive=*<br>
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3)Modify the value, like this:<br>
 +
hdmi_group=2<br> hdmi_mode=87<br>
 +
....<br>
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hdmi_drive=2<br>
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'''hdmi_group=2''' means DMT (Display Monitor Timings; the standard typically used by monitors)<br>
 +
'''hdmi_mode=87''' indicates the resolution mode we set before.<br>
 +
'''hdmi_drive=2''' selects the Normal HDMI mode.<br>
  
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Value Default Default
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For more details about configuring config.txt, refer to Raspberry Pi official website: https://www.raspberrypi.org/documentation/configuration/config-txt.md
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width (required) width in pixels
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−
height (required) height in pixels
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framerate (required) framerate in Hz
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aspect 3 aspect ratio 1=4:3, 2=14:9, 3=16:9, 4=5:4, 5=16:10, 6=15:9
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−
margins 0 0=margins disabled, 1=margins enabled
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−
interlace 0 0=progressive, 1=interlaced
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−
rb 0 0=normal, 1=reduced blanking
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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.
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After the modification is done, save, exit then reboot your Raspberry Pi and enjoy.<br>
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hdmi_group=* hdmi_mode=* hdmi_drive=*
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http://wiki.sunfounder.cc/images/b/b5/Modify_resolution.pdf
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3)Modify the value, like this:
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−
hdmi_group=2 hdmi_mode=87
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....
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hdmi_drive=2
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hdmi_group=2 means DMT (Display Monitor Timings; the standard typically used by monitors)
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−
hdmi_mode=87 indicates the resolution mode we set before.
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−
hdmi_drive=2 selects the Normal HDMI mode.
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−
 
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−
For more details about configuring config.txt, refer to Raspberry Pi official website: https://www.raspberrypi.org/documentation/configuration/config-txt.md.
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−
 
+
−
After the modification is done, save, exit then reboot your Raspberry Pi and enjoy.
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Latest revision as of 10:56, 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.
http://wiki.sunfounder.cc/images/b/b5/Modify_resolution.pdf

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