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Date:      Fri, 28 Nov 2025 17:20:43 +0000 (UTC)
From:      "Bjoern A. Zeeb" <bz@FreeBSD.org>
To:        FreeBSD User <freebsd@walstatt-de.de>
Cc:        freebsd-wireless@freebsd.org
Subject:   Re: 15-STABLE: if_iwlwifi dysfunctional ...
Message-ID:  <154050-p4o4-5p20-8019-oqr485nro170@mnoonqbm.arg>
In-Reply-To: <20251128104342.095ad6f4@hermann>

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On Fri, 28 Nov 2025, FreeBSD User wrote:

> Running 15-STABLE (15.0-STABLE #16 stable/15-n281349-b903f27e171b: Fri Nov 28 05:20:32
> CET 2025 amd64) on a Lenovo T580 laptop. The system is equipted with an Intel i8265/8275
> WiFi chipset (for recognized technical details see below).
> [...]
>
> From my perseptive anything seems to be OK:
>
> [...]
> end FB_INFO
> iwlwifi0: <iwlwifi> mem 0xe8100000-0xe8101fff at device 0.0 on pci2
> iwlwifi0: Detected crf-id 0xbadcafe, cnv-id 0x10 wfpm id 0x80000000
> iwlwifi0: PCI dev 24fd/0010, rev=0x230, rfid=0xd55555d5
> iwlwifi0: Detected Intel(R) Dual Band Wireless-AC 8265
> iwlwifi0: successfully loaded firmware image 'iwlwifi-8265-36.ucode'
> iwlwifi0: loaded firmware version 36.ca7b901d.0 8265-36.ucode op_mode iwlmvm
> iwlwifi0: base HW address: MACxxxxxMAC , OTP minor version: 0x0
> hms0: <Logitech Wireless Receiver Mouse> on hidbus0
> hms0: 5 buttons and [XYW] coordinates ID=1
> [...]
>
> I'm unable to connect to any access point. I use at home a OpenWRT based AP with latest
> firmware, connecting with the Linux- and Windows hosts of my employer (so: functionality
> at a basic level guaranteed). FreeBSD - 14-STABLE (last time I used until branch of
> 16-CURRENT) and 15-STABLE do not. A similar misbehaviour is observed when trying to
> access APs at several campi via "eduroam" - the hardware behind those APs is probably
> Cisco technology, I do not know.
>
> The log and console are filled with "dramatic" messages like
>
> iwlwifi0: lkpi_sta_scan_to_auth:2419: lvif 0xfffffe00c3307000 vap 0xfffffe00c3307010 iv_bss 0xfffffe00b4135000 lvif_bss 0 lvif_bss->ni 0 synched 0, ni 0xfffffe00c2bf4000 lsta 0xfffff8002e01e800
> iwlwifi0: lkpi_iv_newstate: error 95 during state transition 2 (AUTH) -> 2 (AUTH)

This is net80211 chaning the iv_bss under us.

> wlan0: link state changed to UP
> wlan0: link state changed to DOWN
> wlan0: link state changed to UP
> wlan0: link state changed to DOWN
> wlan0: link state changed to UP
> wlan0: link state changed to DOWN

This indicates that you get associated.  Hard to say without timestamps but ...

> iwlwifi0: Not associated and the time event is over already...
> iwlwifi0: linuxkpi_ieee80211_connection_loss: vif 0xfffffe00c3307f00 vap 0xfffffe00c3307010 state ASSOC (synched 1, assoc 0 beacons 0 dtim_period 0)

But then things are timing out.

That is a problem Oleg has reported on rtw88, I had last night with an AX101 but after a reboot was gone again, ...


> iwlwifi0: fail to flush all tx fifo queues Q 5
> iwlwifi0: Queue 5 is active on fifo 3 and stuck for 10000 ms. SW [2, 3] HW [2, 3] FH TRB=0x080305002

This is the 2nd report I lately got with queue stuck.

> wlan0: link state changed to UP
> wlan0: link state changed to DOWN
> iwlwifi0: Not associated and the time event is over already...
> iwlwifi0: linuxkpi_ieee80211_connection_loss: vif 0xfffffe00c3307f00 vap 0xfffffe00c3307010 state ASSOC (synched 1, assoc 0 beacons 0 dtim_period 0)

> iwlwifi0: fail to flush all tx fifo queues Q 5
> iwlwifi0: Queue 5 is active on fifo 3 and stuck for 10000 ms. SW [2, 3] HW [2, 3] FH TRB=0x080305002
> wlan0: link state changed to UP
> wlan0: link state changed to DOWN
> [...]
>
> I'm helpless here ...

What would be interesting to me:

What does wpa_supplicant say?  What are the errors?

I am thinking of messages like:
Nov 27 18:37:59 x wpa_supplicant[5946]: wlan0: Authentication with xx:xx:xx:xx:xx: timed out.
Nov 27 19:30:02 x wpa_supplicant[5689]: wlan0: CTRL-EVENT-DISCONNECTED bssid=xx:xx:xx:xx:xx:xx reason=3 locally_generated=1





> [... pciconf ...]
> # pciconf -lvceb iwlwifi0@pci0:4:0:0
> iwlwifi0@pci0:4:0:0:    class=0x028000 rev=0x78 hdr=0x00 vendor=0x8086 device=0x24fd subvendor=0x8086 subdevice=0x0010
>    vendor     = 'Intel Corporation'
>    device     = 'Wireless 8265 / 8275'



-- 
Bjoern A. Zeeb                                                     r15:7


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