Troubleshooting HDMI Output on BeagleBone Black: No Signal Issue
Hello guys, I'm developing a digital signage project using the BeagleBone Black (BBB) running a custom Embedded Linux image. The project requires displaying dynamic content on an HDMI monitor. However, the HDMI display is not working, and I am unable to get any output on the screen. I did configure the HDMI output by ensuring that the BBB is set to output in the HDMI port
In
uEnv.txt, I ensured that the needed lines are uncommented or added
I then reboot the system
After rebooting, the HDMI monitor still shows no signal, and the screen remains blank.Solution:Jump to solution
Hey, @Boss lady try using a power supply with a higher current rating, a weak power supply might not provide enough power for HDMI output too. Ensure that your BBB is receiving sufficient power also.
2 Replies
Hi @Boss lady , in order to address your HDMI output problems, have you considered adjusting the
optargs value to "video=HDMI-A-1:1280x720@60e" in the uEnv.txt. Then use dmesg | grep hdmi command to examine boot logs.Solution
Hey, @Boss lady try using a power supply with a higher current rating, a weak power supply might not provide enough power for HDMI output too. Ensure that your BBB is receiving sufficient power also.