Hi, I have a Thinkpad P1 gen 2 (same as X1 extreme gen 2), which has an AX200 -- 52:00.0 0280: 8086:2723 (rev 1a). Things mostly work, but I've noticed that after a reboot, the card stops working. Specifically, wpa_supplicant can't talk to it anymore. Or, sometimes it appears to drop off the bus completely. After doing a full poweroff+poweron (not a reboot), it works again. Here's what one of the failure modes looks like: zx2c4@thinkpad ~ $ journalctl -b -1|egrep '(iwl|wpa)' Dec 10 11:57:55 thinkpad systemd[1]: Created slice system-wpa_supplicant.slice. Dec 10 11:57:55 thinkpad kernel: iwlwifi 0000:52:00.0: enabling device (0000 -> 0002) Dec 10 11:57:55 thinkpad kernel: iwlwifi 0000:52:00.0: Direct firmware load for iwlwifi-cc-a0-52.ucode failed with error -2 Dec 10 11:57:55 thinkpad kernel: iwlwifi 0000:52:00.0: Direct firmware load for iwlwifi-cc-a0-51.ucode failed with error -2 Dec 10 11:57:55 thinkpad kernel: iwlwifi 0000:52:00.0: Direct firmware load for iwlwifi-cc-a0-50.ucode failed with error -2 Dec 10 11:57:55 thinkpad kernel: iwlwifi 0000:52:00.0: Direct firmware load for iwlwifi-cc-a0-49.ucode failed with error -2 Dec 10 11:57:55 thinkpad kernel: iwlwifi 0000:52:00.0: TLV_FW_FSEQ_VERSION: FSEQ Version: 43.2.23.17 Dec 10 11:57:55 thinkpad kernel: iwlwifi 0000:52:00.0: Found debug destination: EXTERNAL_DRAM Dec 10 11:57:55 thinkpad kernel: iwlwifi 0000:52:00.0: Found debug configuration: 0 Dec 10 11:57:55 thinkpad kernel: iwlwifi 0000:52:00.0: loaded firmware version 48.4fa0041f.0 op_mode iwlmvm Dec 10 11:57:55 thinkpad kernel: iwlwifi 0000:52:00.0: Detected Intel(R) Wi-Fi 6 AX200 160MHz, REV=0x340 Dec 10 11:57:55 thinkpad kernel: iwlwifi 0000:52:00.0: Applying debug destination EXTERNAL_DRAM Dec 10 11:57:55 thinkpad kernel: iwlwifi 0000:52:00.0: Allocated 0x00400000 bytes for firmware monitor. Dec 10 11:57:55 thinkpad kernel: iwlwifi 0000:52:00.0: base HW address: sanitized Dec 10 11:57:56 thinkpad wpa_supplicant[747]: Successfully initialized wpa_supplicant Dec 10 11:57:56 thinkpad wpa_supplicant[747]: Could not set interface wlan0 flags (UP): Connection timed out Dec 10 11:57:56 thinkpad wpa_supplicant[747]: nl80211: Could not set interface 'wlan0' UP Dec 10 11:57:56 thinkpad wpa_supplicant[747]: nl80211: deinit ifname=wlan0 disabled_11b_rates=0 Dec 10 11:57:56 thinkpad wpa_supplicant[747]: wlan0: Failed to initialize driver interface Dec 10 11:57:56 thinkpad systemd[1]: wpa_supplicant@wlan0.service: Main process exited, code=exited, status=255/EXCEPTION Dec 10 11:57:56 thinkpad systemd[1]: wpa_supplicant@wlan0.service: Failed with result 'exit-code'. Dec 10 11:58:10 thinkpad systemd[1]: Removed slice system-wpa_supplicant.slice. I assume this is something to do with the bios not powercycling the pcie bus during reboot, leaving the card in some kind of inconsistent state. Perhaps it's possible to add a quirk to always powercycle it before initializing and loading firmware? Thanks, Jason
