Issue #548 has been updated by Nico Huber.
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).
---------------------------------------- Bug #548: Computer Fails To Recognize Upgraded WiFi Card https://ticket.coreboot.org/issues/548#change-1871
* Author: Jeremy Brown * Status: New * Priority: Normal * Target version: none * Start date: 2024-07-15 ---------------------------------------- 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](https://richbits.rbarnes.org/installing-the-intel-7260-in-the-thinkpad-x201....) so I don't think there's an electrical issue. I've seen [somewhat related bugs](https://ticket.coreboot.org/issues/311) 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.
---Files-------------------------------- 6205_lspci_tree.txt (1.63 KB) 7260_lspci_tree.txt (1.57 KB) 6205_lspci.txt (12.8 KB) 7260_lspci.txt (12.2 KB) coreboot.cfg (20.1 KB) 6205_root_inspection.txt (3.58 KB) 7260_root_inspection.txt (3.58 KB)