I tested it out on all computer using PCLOS.
Some info one the laptop:
OS: PCLinuxOS x86_64
Kernel: 4.20.7-pclos1
CPU: Intel Core 2 T5600 (2) @ 1.833GHz
GPU: AMD Mobility Radeon X1300
Memory: 2308MiB / 3000MiB (4G but 1G is used by video)
Trinity: R14.0.5
trinity-kpdf-14.0.5-1.pclos2018
I can call pdf doc properties from within kpdf.
Thank you in advance.
Kate