rm_mendez
Posts: 2
Joined: Mon Jul 15, 2019 11:29 pm

Re: Pi 3B - no HDMI output after latest apt-get kernel upgrade

Mon Aug 19, 2019 12:15 pm

cormack wrote:
Fri Aug 02, 2019 8:56 pm
Getting back to the topic at hand (no HDMI output after latest apt-get kernel upgrade), the following work-around got me going under the new kernel, *though it does not fix the root cause.*

The issue seems to be in the HDMI subsystem failing to properly identify the connected display. Adding the following to /boot/config.txt stops the kernel from polling the display for edid data, to identify the type of display.

# Added when kernel upgrade resulted in no HDMI
hdmi_ignore_edid=0xa5000080

Information about that parameter can be found here...
https://www.raspberrypi.org/documentati ... t/video.md
I have managed to fix mine using this parameter and adjusting the hdmi_mode value. I really don't know that well how it worked, but I'm happy for now.

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