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AM62A7: How to modify the HDMI output resolution

weiqian chen
Prodigy 10 points
Part Number: AM62A7

Hi,all

How can I change the HDMI output resolution on linux system and SDK kernel driver? Now the default is 1920*1080, I need to change it to 1280*720.

I have referred to this article but it does not apply to me:https://e2e.ti.com/support/processors-group/processors/f/processors-forum/1265241/sk-am62-hdmi-display-resolution?tisearch=e2e-sitesearch&keymatch=Display%2520Resolution#

The system supports 720p output

root@am62axx-evm:/opt/edgeai-gst-apps# cat /sys/class/drm/card0-HDMI-A-1/modes 
1920x1080
1920x1080
1920x1080
1920x1080
1280x720
1280x720
1280x720
1280x720
720x480
720x480
720x480
720x480
640x480
640x480
640x480

Thank you.Wish you happy every day!

  • 0
    TI__Mastermind 27060 points

    To change the HDMI output resolution on a Linux system with the AM62A7 platform, you can use the `xrandr` command to set the desired resolution. Here are the steps to change the HDMI output resolution to 1280x720:

    1. Open a terminal on your Linux system.

    2. Use the following command to list the available display outputs and their supported modes:

    xrandr

    This will display a list of available display outputs and supported resolutions. Identify the HDMI output (e.g., HDMI-1).

    3. Use the following command to set the HDMI output resolution to 1280x720:

    xrandr --output HDMI-1 --mode 1280x720

    Replace "HDMI-1" with the actual HDMI output name if it's different in your system.

    4. After running the command, the HDMI output resolution should be changed to 1280x720.

  • 0 回复 Gary Lu
    Prodigy 10 points

    Sadly, AM62a does not have xrandr installed, nor does it have apt or yum.

    root@am62axx-evm:~# apt
-sh: apt: command not found
root@am62axx-evm:~# apt-get
-sh: apt-get: command not found
root@am62axx-evm:~# yum
-sh: yum: command not found
root@am62axx-evm:~# rpm               
-sh: rpm: command not found
root@am62axx-evm:~# xrandr
-sh: xrandr: command not found

  • 0 回复 weiqian chen
    TI__Mastermind 27060 points

    It looks like you are trying to use package management commands like apt, yum, and rpm on an AM62a system, but these commands are not found. This is likely because AM62a does not use the same package management systems as traditional Linux distributions.