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Date:      Sat, 07 Mar 2026 12:45:45 +0000
From:      bugzilla-noreply@freebsd.org
To:        wireless@FreeBSD.org
Subject:   [Bug 293645] iwlwifi doesn't connect using VHT80 anymore
Message-ID:  <bug-293645-21060@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=293645

            Bug ID: 293645
           Summary: iwlwifi doesn't connect using VHT80 anymore
           Product: Base System
           Version: 14.4-STABLE
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: wireless
          Assignee: wireless@FreeBSD.org
          Reporter: vsasjason@gmail.com

(Setting Version to 14.4-S, but actual affected version is 14.4-R which isn't
available in the list yet.)

After upgrading to 14.4-RELEASE, I'm getting only up to VHT40/ac/400Mbps:
wlan0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
        options=0
        ether c2:c0:e9:21:94:d7
        inet 10.0.55.66 netmask 0xffffffc0 broadcast 10.0.55.127
        groups: wlan
        ssid "<REDACTED>" channel 64 (5320 MHz 11a vht/40-) bssid
02:16:6f:40:8a:d0
        regdomain ETSI country UA authmode WPA2/802.11i privacy ON
        deftxkey UNDEF AES-CCM 2:128-bit AES-CCM ucast:128-bit txpower 20
        bmiss 7 mcastrate 6 mgmtrate 6 scanvalid 60 -ampdutx ampdurx
        ampdulimit 64k -amsdutx amsdurx shortgi -ldpctx ldpcrx -uapsd vht
        vht40 vht80 vht160 -vht80p80 wme roaming MANUAL
        parent interface: iwlwifi0
        media: IEEE 802.11 Wireless Ethernet autoselect mode 11ac
        status: associated
        nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>

Rebooting into 14.3-RELEASE immediately brings me back to VHT80/ac/867Mbps:
wlan0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
        options=0
        ether c2:c0:e9:21:94:d7
        inet 10.0.55.66 netmask 0xffffffc0 broadcast 10.0.55.127
        groups: wlan
        ssid "<REDACTED>" channel 64 (5320 MHz 11a vht/80-) bssid
02:16:6f:40:8a:d0
        regdomain ETSI country UA authmode WPA2/802.11i privacy ON
        deftxkey UNDEF AES-CCM 2:128-bit txpower 20 bmiss 7 mcastrate 6
        mgmtrate 6 scanvalid 60 -ampdutx ampdurx ampdulimit 64k
        -amsdutx amsdurx shortgi -ldpctx ldpcrx -uapsd vht vht40 vht80 vht160
        -vht80p80 wme roaming MANUAL
        parent interface: iwlwifi0
        media: IEEE 802.11 Wireless Ethernet autoselect mode 11ac
        status: associated
        nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>

pciconf:
iwlwifi0@pci0:3:0:0:    class=0x028000 rev=0x1a hdr=0x00 vendor=0x8086
device=0x2725 subvendor=0x8086 subdevice=0x0024
    vendor     = 'Intel Corporation'
    device     = 'Wi-Fi 6E(802.11ax) AX210/AX1675* 2x2 [Typhoon Peak]'
    class      = network
    cap 01[c8] = powerspec 3  supports D0 D3  current D0
    cap 05[d0] = MSI supports 1 message, 64 bit
    cap 10[40] = PCI-Express 2 endpoint max data 128(128) FLR RO NS
                 max read 128
                 link x1(x1) speed 5.0(5.0) ASPM L1(L1) ClockPM enabled
    cap 11[80] = MSI-X supports 16 messages, enabled
                 Table in map 0x10[0x2000], PBA in map 0x10[0x3000]
    ecap 0001[100] = AER 1 0 fatal 0 non-fatal 1 corrected
    ecap 0018[14c] = LTR 1
    ecap 001e[154] = L1 PM Substates 1

kernel detection messages:
Mar  7 13:41:00 jnb kernel: [7] iwlwifi0: <iwlwifi> mem 0xed200000-0xed203fff
at device 0.0 on pci3
Mar  7 13:41:00 jnb kernel: [7] iwlwifi0: Detected crf-id 0x400410, cnv-id
0x400410 wfpm id 0x80000000
Mar  7 13:41:00 jnb kernel: [7] iwlwifi0: PCI dev 2725/0024, rev=0x420,
rfid=0x10d000
Mar  7 13:41:00 jnb kernel: [7] iwlwifi0: Detected Intel(R) Wi-Fi 6 AX210
160MHz
Mar  7 13:41:00 jnb kernel: [7] iwlwifi0: successfully loaded firmware image
'iwlwifi-ty-a0-gf-a0-89.ucode'
Mar  7 13:41:00 jnb kernel: [7] iwlwifi0: capa flags index 4 larger than
supported by driver
Mar  7 13:41:00 jnb kernel: [7] iwlwifi0: TLV_FW_FSEQ_VERSION: FSEQ Version:
0.0.2.42
Mar  7 13:41:00 jnb kernel: [7] iwl-debug-yoyo.bin: could not load binary
firmware /boot/firmware/iwl-debug-yoyo.bin either
Mar  7 13:41:00 jnb kernel: [7] iwl-debug-yoyo.bin: could not load binary
firmware /boot/firmware/iwl-debug-yoyo.bin either
Mar  7 13:41:00 jnb kernel: [7] iwl-debug-yoyo_bin: could not load binary
firmware /boot/firmware/iwl-debug-yoyo_bin either
Mar  7 13:41:00 jnb kernel: [7] iwl_debug_yoyo_bin: could not load binary
firmware /boot/firmware/iwl_debug_yoyo_bin either
Mar  7 13:41:00 jnb kernel: [7] iwlwifi0: loaded firmware version 89.7207fc64.0
ty-a0-gf-a0-89.ucode op_mode iwlmvm
Mar  7 13:41:00 jnb kernel: [7] iwlwifi0: WFPM_UMAC_PD_NOTIFICATION: 0x20
Mar  7 13:41:00 jnb kernel: [7] iwlwifi0: WFPM_LMAC2_PD_NOTIFICATION: 0x1f
Mar  7 13:41:00 jnb kernel: [7] iwlwifi0: WFPM_AUTH_KEY_0: 0x90
Mar  7 13:41:00 jnb kernel: [7] iwlwifi0: CNVI_SCU_SEQ_DATA_DW9: 0x0
Mar  7 13:41:00 jnb kernel: [7] iwlwifi0: successfully loaded firmware image
'iwlwifi-ty-a0-gf-a0.pnvm'
Mar  7 13:41:00 jnb kernel: [7] iwlwifi0: loaded PNVM version 285b3568
Mar  7 13:41:00 jnb kernel: [7] iwlwifi0: Detected RF GF, rfid=0x10d000
Mar  7 13:41:00 jnb kernel: [7] iwlwifi0: base HW address: 42:f2:aa:e9:c9:ac
Mar  7 13:41:00 jnb kernel: [8] iwlwifi0: WFPM_UMAC_PD_NOTIFICATION: 0x20
Mar  7 13:41:00 jnb kernel: [8] iwlwifi0: WFPM_LMAC2_PD_NOTIFICATION: 0x1f
Mar  7 13:41:00 jnb kernel: [8] iwlwifi0: WFPM_AUTH_KEY_0: 0x90
Mar  7 13:41:00 jnb kernel: [8] iwlwifi0: CNVI_SCU_SEQ_DATA_DW9: 0x0

AP is MikroTik wAPG-5HaxD2HaxD which supports and currently operating up to
VHT160 both in ac/ax:
[dsjk283@Mikrotik] > /interface/wifi/radio/print proplist=hw-type,bands where
.id=*3
Columns: HW-TYPE, BANDS
# HW-TYPE  BANDS
2 QCN6122  5ghz-a:20mhz
           5ghz-n:20mhz,20/40mhz
           5ghz-ac:20mhz,20/40mhz,20/40/80mhz,20/40/80/160mhz
           5ghz-ax:20mhz,20/40mhz,20/40/80mhz,20/40/80/160mhz
[dsjk283@Mikrotik] > /interface/wifi/monitor 0 once proplist=channel
  channel: 5320/ax/eeeeeeeC/D
[dsjk283@Mikrotik] >

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