A couple of days ago I wrote (a personal reminder post) about how to add automatic connect to Wi-Fi and SSH enabled in a bootable Raspbian image in a SD card (see references). I also explained that this was required for me because, by default Raspberry Pi 4 video ports were not starting with a 1920 x 1080p resolution.
Important: Remember that now, the 2 video ports supports 4K !
I was digging and reading about this, and I found another quick fix to solve this problem. Once you had a Raspbian image in a SD card, you can edit the file [config.txt] for some amazing cool tweaks! (Also, see references)
For me, my main change was in the [hdmi_safe] parameter. Setting
1 will lead to “safe mode” settings being used to try to boot with maximum HDMI compatibility.
# uncomment if you get no picture on HDMI for a default "safe" mode
With this, the device will start automatically in a safe and standard mode. And, yes, it will work with my old and crappy test monitor!
Greetings @ Toronto
- El Bruno, How To automatically connect to WiFi and enable SSH on 1st boot https://elbruno.com/2019/08/16/raspberrypi-how-to-automatically-connect-to-wifi-and-enable-ssh-on-1st-boot/
- Raspbian Configuration, config.txt https://www.raspberrypi.org/documentation/configuration/config-txt/