My tip is that LCDd is not recognizing your Pi Zero correctly, not using
the correct GPIO base address. It writes this on its output:

check_board_rev: Raspberry Pi 2 or higher detected

I think it should have the same GPIO base address as a Raspberry Pi 1 as
it has the same SOC. I looked at the source code of the detection part
in the lcdproc driver, and it may have problems with this. I saw in a
comment there, that it is based on WiringPI's implementation. And in
WiringPI there is a commit made at 2017-03-03 with a message: *Fixed
GPIO based address for Pi Zero-W*

I think the best step would be to file an issue for the LCDProc
maintainers at https://github.com/lcdproc/lcdproc/issues

If they solve the problem I will compile and package the new LCDd.


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