Paul Webster wrote: 
> Hopefully that is the same error that it is getting when being run by
> pCP.
> Challenge is to work out why.
> 
> how about
> sudo ls -lrt /dev/fb*
> 
> Edit:
> Unfortunately I do not have a spare system to set this up myself at the
> moment.
> 
> Question:
> Which Raspberry Pi system is it?
> If RPi4 ... which HDMI port are you using (nearest to the power or not)?

tc@pCP:~$ sudo ls -lrt /dev/fb*
crw-rw----    1 root     staff      29,   0 Jan  1  1970 /dev/fb0

It's a Pi3B+ and its the main HDMI, haven't found any more.


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