ok, what i'd do:
1) update the bootloader
https://www.raspberrypi.com/documentati ... ate_stable
WARNING: this will wipe the card, so use a spare card, or be prepared to reload the OS to the card when you get the green screen.
2) build the PI-OS using at least a 32G Sd-card.
use pi-imager on another computer to build the OS.
I'd pick 64 bit PI-OS with the desktop (in pi-imager)
NOTE: make sure to edit the settings in PI-imager to set password, SSH, all that stuff.
3) verify your monitor Sends EDID data back to the PI, so the display will work properly....
(lengthy section here)
The latest "bullseye" and "Bookworm" releases use the KMS video driver.
The KMS driver seems less forgiving when the EDID data from the monitor is bad, nonexistant, or malformed.
If you get no display:
probably, your PI OS cannot figure out the EDID data from the monitor, and as such, cannot figure out what resolution to set.
unfortunately, this results in the PI setting none... no display
there have been many reports of "failed video output" which boil down to bad or non-existant EDID data from the monitor. This is an issue more often with the new KMS driver in Bullseye and Bookworm.
note: many HDMI adapters do not pass data in both directions, and can be the cause of no EDID Data. It is recommended to get the proper cable, and not use adapters.
another note: the KMS driver ignores all video settings in config.txt - video mode changes made to this file will have no effect !
NOTE: this assumes an updated Bootloader (PI4/400/5). if you are not sure, update it... instructions here:
https://www.raspberrypi.com/documentati ... ate_stable
- check your HDMI cabling and EDID status:
power off your PI
remove the SD card
power on the pi.
- you should get the diagnostic display as shown below. Pay attention to the EDID data status (the last line "display"... below says EDID=OK)
if you do not get the diagnostic display, it may be your cabling or an adapter? - check your cabling
however, you can set the resolution manually:
in /boot/cmdline.txt (add to the front/end of the line, NOT a new line)
-- IMPORTANT NOTE: for Bookworm, the file is at /boot/firmware/cmdline.txt !!
video=HDMI-A-1:1024x768@60D
(or whatever resolution you want)
4) on first boot, the PI-OS must expand the partition to use all the card. This takes time (up to minutes, depending on card size)
NOTE: you will get multiple reboots on the first run of PI-OS
Be patient.
It will get there.
1) update the bootloader
https://www.raspberrypi.com/documentati ... ate_stable
WARNING: this will wipe the card, so use a spare card, or be prepared to reload the OS to the card when you get the green screen.
2) build the PI-OS using at least a 32G Sd-card.
use pi-imager on another computer to build the OS.
I'd pick 64 bit PI-OS with the desktop (in pi-imager)
NOTE: make sure to edit the settings in PI-imager to set password, SSH, all that stuff.
3) verify your monitor Sends EDID data back to the PI, so the display will work properly....
(lengthy section here)
The latest "bullseye" and "Bookworm" releases use the KMS video driver.
The KMS driver seems less forgiving when the EDID data from the monitor is bad, nonexistant, or malformed.
If you get no display:
probably, your PI OS cannot figure out the EDID data from the monitor, and as such, cannot figure out what resolution to set.
unfortunately, this results in the PI setting none... no display
there have been many reports of "failed video output" which boil down to bad or non-existant EDID data from the monitor. This is an issue more often with the new KMS driver in Bullseye and Bookworm.
note: many HDMI adapters do not pass data in both directions, and can be the cause of no EDID Data. It is recommended to get the proper cable, and not use adapters.
another note: the KMS driver ignores all video settings in config.txt - video mode changes made to this file will have no effect !
NOTE: this assumes an updated Bootloader (PI4/400/5). if you are not sure, update it... instructions here:
https://www.raspberrypi.com/documentati ... ate_stable
- check your HDMI cabling and EDID status:
power off your PI
remove the SD card
power on the pi.
- you should get the diagnostic display as shown below. Pay attention to the EDID data status (the last line "display"... below says EDID=OK)
however, you can set the resolution manually:
in /boot/cmdline.txt (add to the front/end of the line, NOT a new line)
-- IMPORTANT NOTE: for Bookworm, the file is at /boot/firmware/cmdline.txt !!
video=HDMI-A-1:1024x768@60D
(or whatever resolution you want)
4) on first boot, the PI-OS must expand the partition to use all the card. This takes time (up to minutes, depending on card size)
NOTE: you will get multiple reboots on the first run of PI-OS
Be patient.
It will get there.
Statistics: Posted by terribleted — Fri Dec 13, 2024 2:44 pm