|
Happy making, and may your dongle always be detected.
It hardwires the connections without complex negotiation, so the compute module sees a simple HDMI signal and USB data lines. cm2 dongle support
dtoverlay=disable-bt # optional, frees up UART if needed hdmi_force_hotplug=1 hdmi_group=2 hdmi_mode=16 # 1080p 60Hz, change as needed The hdmi_force_hotplug=1 is the key—it tells the GPU to output HDMI even if no display is detected at boot. Happy making, and may your dongle always be detected
Have a C2M dongle success story or a tricky setup? Drop a comment below—especially if you’ve tested it with a CM5 or a non-Raspberry Pi module like the Orange Pi CM4. Have a C2M dongle success story or a tricky setup
Let’s break down what C2M support means, why your dongle might not be working, and how to fix it.
If you still get no HDMI, SSH into the Compute Module (or edit the SD card/eMMC boot partition) and add these lines to config.txt :
Here’s why people get stuck: A standard USB-C hub (like one from Anker or Dell) works with phones and laptops. Plug it into a Raspberry Pi CM4 carrier board… and nothing happens .