coreboot

Looks like the PCIe link is completely down. I wouldn't say it's likely with an Intel card, but it's possible that this happens when coreboot enables the link power management (assuming the link worked without pm). A coreboot log would tell us. You can fetch it from a running system with sudo cbmem -c (if installed, if not make -C util/cbmem/ && sudo util/cbmem/cbmem -c in the coreboot source tree).

Is there anything else I need to provide to get this bug moving? I remember one idea discussed previously was backporting later southbridge code to my board, can that still be done?

Jeremy Brown wrote:

I am running coreboot 24.05 on my Lenovo X201.

I decided to upgrade my WiFi card from an Intel Centrino Advanced-N 6205 to an Intel Wireless-AC 7260; since I selected the option to support Intel PCIe cards in my build config I expected everything to work but my computer fails to recognize the new card. The old card is still recognized if I reinstall it so I know I didn't mess up the socket somehow; I've read reports of the 7260 working with a modded factory BIOS so I don't think there's an electrical issue. I've seen somewhat related bugs but it seems their issue isn't mine.

I've attached lspci data from both chips and my build config, lmk if additional information is needed.

I'm using a miniPCIe AX210 card with coreboot on my X201 and so far it works perfectly fine with this config https://ticket.coreboot.org/attachments/460