I updated to Crimson late, later than I should’ve in the modern era of software vulnerabilities.
Does Lapdock from Purism Store just not work with Crimson? It seems broken and I remember it working fine not long ago.
Works for me, I used it a couple weeks ago to build something small and fun while I was stuck in a car for a couple hours.
Are you using the correct port on the lapdock? They require a specific USB-C port to output the DisplayPort signal.
Is the USB-C cable you are using the original cable that came with it? Is it still working when you test with other devices?
When you have the lapdock plugged in, enter the lsusb command in a terminal. Do you see these entries (NexDock 2025 model):
Bus 003 Device 004: ID 222a:0001 ILI Technology Corp. Multi-Touch Screen
Bus 003 Device 005: ID 258a:0f08 SINO WEALTH NexDock Touchpad Keyboard
Bus 003 Device 003: ID 1a40:0001 Terminux Technology Inc. USB 2.0 Hub
Bus 003 Device 002: ID 1a40:0001 Terminux Technology Inc. USB 2.0 Hub
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub