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Pi 4 and LineageOS 16
Posted: Tue Mar 24, 2020 1:14 pm
by stevan44
I can't get my monitor to display anything other the the rainbow screen screen. I have a Dell P2414H (1080p)monitor that will support 1280x720. I have the config.txt set for hdmi_group=2 and hdmi_mode=85.
The monitor is connected using a DVI connection with a adapter to HDMI. Is there something else I can do to see the monitor screen as the Raspberry LCD does?
Re: Pi 4 and LineageOS 16
Posted: Tue Mar 24, 2020 4:48 pm
by fruitoftheloom
stevan44 wrote: ↑Tue Mar 24, 2020 1:14 pm
I can't get my monitor to display anything other the the rainbow screen screen. I have a Dell P2414H (1080p)monitor that will support 1280x720. I have the config.txt set for hdmi_group=2 and hdmi_mode=85.
The monitor is connected using a DVI connection with a adapter to HDMI. Is there something else I can do to see the monitor screen as the Raspberry LCD does?
Try a HDMi to DVi Cable ( no adaptors ):
Re: Pi 4 and LineageOS 16
Posted: Wed Mar 25, 2020 2:49 pm
by stevan44
Thanks for the suggestion but, I tried to connect to my TV using HDMI. I changed the group to CEA and selected a mode for that category, but got the same results. So its not an issues at the physical layer.
I think its has to do with the EDID.dat file that has the resolution configuration settings. I do see the file on the SD card or its corrupt.
Solved *** Re: Pi 4 and LineageOS 16
Posted: Fri Mar 27, 2020 3:52 pm
by stevan44
It was not the Edid.dat file, but serial console configuration that was interfering with the HDMI not working.
Go to the config.txt file under Boot directory and change "enable_Uart=1" to 0. It is turn on by default.
I hope that this will help others who are having the same issue with HDMI 0 not display correctly. Please remember that you have to use 720p solutions due to the graphics driver limitation. I hope one day that a higher resolution driver can be used.