The CM4 is plugged into "CM4_WiFi7-PoE" board, please see
http://wiki.mcuzone.com/index.php?title=2004_CM4_WiFi7_WiFi6_WLANPi for
more information.

Is this the correct way to check the bootloader version?

ubuntu@ubuntu:~$ sudo vcgencmd bootloader_version
2023/01/11 17:40:52
version 8ba17717fbcedd4c3b6d4bce7e50c7af4155cba9 (release)
timestamp 1673458852
update-time 0
capabilities 0x0000007f
ubuntu@ubuntu:~$

ubuntu@ubuntu:~$ sudo vcgencmd version
Feb 29 2024 12:24:53
Copyright (c) 2012 Broadcom
version f4e2138c2adc8f3a92a3a65939e458f11d7298ba (clean) (release) (start)


A few notes:
- The manufacturer is able to reproduce the same issue. They have reported that 
the same issue does not occur if you swap the CM4 with a CM5, but I need to 
verify this once I obtain a CM5.
- The issue does not occur when using Raspberry Pi OS (as noted above)

>> I cannot reproduce this locally. For me, PCI devices always show up
after a reboot-after-crash.

Thanks for trying to reproduce - I can make a remote test environment
available if that helps.

It occurs ~half the time for us. I've attached some example test runs
dmesg outputs (these were done with additional
/boot/firmware/cmdline.txt parameters set (pcie_aspm=off as part of an
experiment)

** Attachment added: "dmesg output after panic - 10 runs"
   
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2099935/+attachment/5861155/+files/dmesg%20output%20from%2010%20tests.zip

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https://bugs.launchpad.net/bugs/2099935

Title:
  PCI initialization failure following kernel panic reboot on Raspberry
  Pi CM4

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