LinuxCNC on Raspberry Pi 5

Stop overthinking.
With mesa hardware you don't need a base thread, only a servo thread is required. With that, latency isn't such a huge issue either. Trying to get an extra bit here and there does nothing.
The pre made image Rodw recently linked to is perfectly fine to run a machine, the only exception would be if you are using the RPi 5 spi interface to talk to a 7c81 or 7c80 as this requires a driver that isn't included in Rods image , this is not required for ethernet.
Invest more into learning the ins and outs of hal . This is more important that fussing over software as the images provide what is required, remember the only task these images are meant for is running a CNC machine.
If one reads the online docs one will fine some simple exercises that do not require a CNC machine.

I've had good luck getting everything to run well enough to get deep into learning and configuring LinuxCNC, Mesa 7i95T and the needed .ini and HAL files.  However, I just ran into my first problem when LinuxCNC errors on start when I configure QtDragon as the interfaces. 

I've already worked my way through several prior fail-on-start situations chasing down reported errors from the usual sources but this one is stumping me because I can't seem to find the actual error in the outputs I'm aware of.I will attach everything I can think of if someone could take a peak and spot what I'm missing.

Thanks

try
DISPLAY = qtvcp qtdragon