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openFyde / overlay-rpi4-openfyde

openFyde supported hardware Raspberry Pi 4 build artefacts and pre-built image releases.
https://openfyde.io
BSD 3-Clause "New" or "Revised" License
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hdmi output to dvi-monitor #12

Open kastidad opened 6 months ago

kastidad commented 6 months ago

Hi!

I'm trying to install the r114 version but it boots to a black screen. I've used many rpi distros before and even pinn bootloader without a problem.

I'm using a rpi4b, and tried booting with a usb/ssd enclosure (which boots fine with usual distros) and with sd-card.

Any help would be appreciated!

kastidad commented 6 months ago

To anyone that might be affected by the same issue, I add next the lines I put on the config.txt in the boot partition (/dev/sda12 in my case).

You'd have to figure out a way to get the edid file of your monitor using a raspbian os, and copy it to the same boot partition.

Also I attach only the modified lines, not the whole config.txt contents (it includes some explanatory links):

"...
# https://www.raspberrypi.com/documentation/computers/config_txt.html

disable_overscan=1
dtparam=audio=on
cma_lwm=16
cma_hwm=32
gpu_mem=64

# ADDED FROM:
# https://learn.adafruit.com/using-weird-displays-with-raspberry-pi/everything-else
hdmi_force_hotplug=1
hdmi_group=2
hdmi_mode=47
hdmi_force_mode=1
# NEXT LINE REQUIRES THE FILE EDID.DATA TO BE PRESENT ALONG THIS FILE (SAME FOLDER):
hdmi_edid_file=1
..."

Also the line hdmi_mode=47 is SPECIFIC to my monitor so follow the instructions in the posted links to get the ones from your own monitor.