1) i assume you are using the official power supply.
2) what size SD card? (suggest at least 32G)
3) it's possible that after the update (maybe updated video driver?), the PI cant figure out your monitors EDID data.
you can force it to use a given resolution by editing the /boot/firmware/cmdline.txt as follows:
add the following to the single line of cmdline.txt
video=HDMI-A-1:1024x768@60D
(or whatever resolution you want)
DO NOT ADD a line feed/carriage return. cmdline.txt MUST be a SINGLE LINE.
to test if your video monitor is providing good EDID data:
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)i hope you are not using an adapter for the HDMI. Adapters are generally bad.... may not pass data in both directions.
2) what size SD card? (suggest at least 32G)
3) it's possible that after the update (maybe updated video driver?), the PI cant figure out your monitors EDID data.
you can force it to use a given resolution by editing the /boot/firmware/cmdline.txt as follows:
add the following to the single line of cmdline.txt
video=HDMI-A-1:1024x768@60D
(or whatever resolution you want)
DO NOT ADD a line feed/carriage return. cmdline.txt MUST be a SINGLE LINE.
to test if your video monitor is providing good EDID data:
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)
Statistics: Posted by terribleted — Thu Sep 04, 2025 8:00 pm