It probably would not help a lot in this case, but there is a chance that if you post a full serial console boot log it might show something.
Which L4T release are you using? See “head -n 1 /etc/nv_tegra_release”.
Is this a custom board, or is it a developer’s kit?
What do you have connected to PCIe?
What is the output of “lspci”? You could log this via serial console, or create a log file to attach to the forum: “lspci 2>&1 | tee log_lspci.txt”.
For any command line you run and want a log file of you can append " 2>&1 | tee log_something.txt" and you’ll have a log you can upload to the forum thread.
FYI, when you run lspci it shows a slot number on the left. An example slot number might look something like “00:00.0”. If you know the particular device slot, then you can limit the query via the “-s” option. As an example, something like this: lspci -s 00:00.0 2>&1 | tee log_lspci_slot.txt
Next, to get a fully verbose listing of that slot (which is why you would want to limit to just the one slot), you use sudo and the “-vvv” option: lspci -s 00:00.0 -vvv 2>&1 | tee log_lspci_slot.txt