Hi!
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 hdmi_safe to 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
hdmi_safe=1
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!
Happy coding!
Greetings @ Toronto
El Bruno
References
- 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/
My posts on Raspberry Pi ⚡🐲⚡
Dev posts for Raspberry Pi
- How to grant permissions to a folder after git clone, to perform dotnet restore on a Raspberry Pi
- How to install .Net Core 3.1 in a Raspberry Pi 4
- Installing Visual Studio Code in a Raspberry Pi 4, run as root, fix black screen
- How to install .Net Core in a Raspberry Pi 4 and test with Hello World
- Build and Run C# NetCore projects in a Raspberry Pi 4 with Visual Studio Code
- Let’s do some Git dev in Raspberry Pi 4 (GitHub and Azure DevOps!)
- Install OpenCV
- Install Python 🐍 Virtual Environments in Raspberry Pi
- Setup SSH passwordless access to remote work with Docker 🐳
- Manage Docker 🐳 as a non-root user
- Build Docker 🐳 images from Visual Studio Code remotely using a Raspberry Pi
Tools and Apps for Raspberry Pi
- Where is my Task Manager in RaspberryPi? Let’s try htop
- Multi-monitor 📺 in Raspberry Pi 4 rocks !
- Double Commander on RaspberryPi4, because files are important
- How to install Docker 🐳 in a Raspberry Pi 4
- Installing Visual Studio Code in a Raspberry Pi
- Installing Visual Studio Code in a Raspberry Pi, run as root, fix black screen (Updated)
- 6 commands to install OpenCV for Python 🐍 in a Raspberry Pi 4
Setup the device
- 1st Setup without monitor 📺: auto connect to WiFi 📶, enable SSH, update and more
- Setup without monitor: enable VNC
- How to enable auto start with HDMI safe mode
- Running a Python 🐍 script in a Python Virtual Environment on reboot / startup
- Setup Wifi on Ubuntu
El Bruno 