Hello,
Sorry for my late response, I put on pause the investigation with this bug.Hope to return to it next month (or at least after 13 June).Right now in my head there are more questions then answers regardingA quick suggestion would be to inspect the config.txt for raspbian for example
this bug, so I cannot really help.
and investigate the differences.
Also try GPU_MEM = "256" just to make a confirmation of my assumption that
something is missing.