a quick update. I will be moving back to China next month. by than I can visit my friend with the laptop and the board to do the onsite test. than it will be easier to fix the fan and EC and etc issue.
the PCIe lane configuration is still, I believe a bios issue at framework end. you can manually overcome this with umaf bios editor, but it is a very not ideal solution.
to get a PCIe 4.0x8, you disable the mux, force dgpu connect and prefer start on external monitor.
none of these options are available in the normal bios.
than the laptop will boot into the internal monitor with the dgpu successfully handshaked and working properly. it will jump back and forth between internal and external display for some time and settle with the external gpu.
otherwise you will get a error 43 that the code 43 fixer cannot fix.
that is very conter intuitive
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