Error encountered -

Ref: https://askubuntu.com/questions/897627/ubuntu-showing-sched-error-20-on-boot
Solution: Add nouveau.modeset=0 to the KERNEL_PARAMETERS key in ltsp.conf and execute ltsp ipxe.
Eventually it will look like this -
KERNEL_PARAMETERS="quiet splash nouveau.modeset=0"
Need to release this as an optional fix for application by those who may encounter it.