Re: ath12k: No 6GHz Wireless found

[Kang Yang <quic_kangyang@xxxxxxxxxxx>]

On 4/2/2025 5:21 AM, Walt Holman wrote:
> On Tue, Apr 1, 2025 at 1:53 PM Jeff Johnson
> <jeff.johnson@xxxxxxxxxxxxxxxx> wrote:
> > On 3/30/2025 7:28 AM, Walt Holman wrote:
> > > Hello,
> > >
> > > I have a wcn7850 hw2.0 based m.2 wireless card in my laptop and am
> > > unable to see or connect to 6Ghz networks. I have an ASUS BE30000 wifi
> > > router setup with a separate 6ghz only network, which my phone and
> > > other laptops can connect to. I'm unable to even see this network on
> > > this particular laptop. Months ago (maybe September), I could see it
> > > occasionally, but now it never shows up. I'm using firmware from
> > > git://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git
> > > and track the kernels pretty closely. I'm currently running 6.14.0
> > > built from source. Any suggestions? Some HW info is below:
> > >
> > > 63:00.0 Network controller: Qualcomm Technologies, Inc WCN785x Wi-Fi
> > > 7(802.11be) 320MHz 2x2 [FastConnect 7800
> > > ] (rev 01)
> > >         Subsystem: Quectel Wireless Solutions Co., Ltd. Device 8000
> > >         Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop-
> > > ParErr- Stepping- SERR- FastB2B- DisINTx+
> > >         Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort+
> > > <TAbort- <MAbort- >SERR- <PERR- INTx-
> > >         Latency: 0, Cache Line Size: 64 bytes
> > >         Interrupt: pin ? routed to IRQ 111
> > >         IOMMU group: 19
> > >         Region 0: Memory at dd800000 (64-bit, non-prefetchable) [size=2M]
> > >         Capabilities: [40] Power Management version 3
> > >                 Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA
> > > PME(D0+,D1-,D2-,D3hot+,D3cold+)
> > >                 Status: D0 NoSoftRst+ PME-Enable- DSel=0 DScale=0 PME-
> > >         Capabilities: [50] MSI: Enable+ Count=16/32 Maskable+ 64bit-
> > >                 Address: fee00000  Data: 0000
> > >                 Masking: ffff8000  Pending: 00000000
> > >         Capabilities: [70] Express (v2) Endpoint, IntMsgNum 0
> > >                 DevCap: MaxPayload 128 bytes, PhantFunc 0, Latency L0s
> > > unlimited, L1 unlimited
> > >                         ExtTag- AttnBtn- AttnInd- PwrInd- RBE+ FLReset-
> > > SlotPowerLimit 75W TEE-IO-
> > >                 DevCtl: CorrErr+ NonFatalErr+ FatalErr+ UnsupReq+
> > >                         RlxdOrd+ ExtTag- PhantFunc- AuxPwr- NoSnoop+
> > >                         MaxPayload 128 bytes, MaxReadReq 512 bytes
> > >                 DevSta: CorrErr- NonFatalErr- FatalErr- UnsupReq-
> > > AuxPwr+ TransPend-
> > >                 LnkCap: Port #0, Speed 8GT/s, Width x2, ASPM L0s L1,
> > > Exit Latency L0s <1us, L1 <64us
> > >                         ClockPM- Surprise- LLActRep- BwNot- ASPMOptComp+
> > >                 LnkCtl: ASPM L1 Enabled; RCB 64 bytes, LnkDisable- CommClk+
> > >                         ExtSynch+ ClockPM- AutWidDis- BWInt- AutBWInt-
> > >                 LnkSta: Speed 8GT/s, Width x1 (downgraded)
> > >                         TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
> > >                 DevCap2: Completion Timeout: Range ABCD, TimeoutDis+
> > > NROPrPrP- LTR+
> > >                          10BitTagComp- 10BitTagReq- OBFF Not Supported,
> > > ExtFmt- EETLPPrefix-
> > >                          EmergencyPowerReduction Not Supported,
> > > EmergencyPowerReductionInit-
> > >                          FRS- TPHComp+ ExtTPHComp-
> > >                          AtomicOpsCap: 32bit- 64bit- 128bitCAS-
> > >                 DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis-
> > >                          AtomicOpsCtl: ReqEn-
> > >                          IDOReq- IDOCompl- LTR+ EmergencyPowerReductionReq-
> > >                          10BitTagReq- OBFF Disabled, EETLPPrefixBlk-
> > >                 LnkCap2: Supported Link Speeds: 2.5-8GT/s, Crosslink-
> > > Retimer- 2Retimers- DRS-
> > >                 LnkCtl2: Target Link Speed: 8GT/s, EnterCompliance- SpeedDis-
> > >                          Transmit Margin: Normal Operating Range,
> > > EnterModifiedCompliance- ComplianceSOS-
> > >                          Compliance Preset/De-emphasis: -6dB
> > > de-emphasis, 0dB preshoot
> > >                 LnkSta2: Current De-emphasis Level: -3.5dB,
> > > EqualizationComplete+ EqualizationPhase1+
> > >                          EqualizationPhase2+ EqualizationPhase3+
> > > LinkEqualizationRequest-
> > >                          Retimer- 2Retimers- CrosslinkRes: unsupported
> > >         Capabilities: [100 v2] Advanced Error Reporting
> > >                 UESta:  DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt-
> > > UnxCmplt- RxOF- MalfTLP-
> > >                         ECRC- UnsupReq- ACSViol- UncorrIntErr-
> > > BlockedTLP- AtomicOpBlocked- TLPBlockedErr-
> > >                         PoisonTLPBlocked- DMWrReqBlocked- IDECheck-
> > > MisIDETLP- PCRC_CHECK- TLPXlatBlocked-
> > >                 UEMsk:  DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt-
> > > UnxCmplt- RxOF- MalfTLP-
> > >                         ECRC- UnsupReq- ACSViol- UncorrIntErr+
> > > BlockedTLP- AtomicOpBlocked- TLPBlockedErr-
> > >                         PoisonTLPBlocked- DMWrReqBlocked- IDECheck-
> > > MisIDETLP- PCRC_CHECK- TLPXlatBlocked-
> > >                 UESvrt: DLP+ SDES+ TLP- FCP+ CmpltTO- CmpltAbrt-
> > > UnxCmplt- RxOF+ MalfTLP+
> > >                         ECRC- UnsupReq- ACSViol- UncorrIntErr+
> > > BlockedTLP- AtomicOpBlocked- TLPBlockedErr-
> > >                         PoisonTLPBlocked- DMWrReqBlocked- IDECheck-
> > > MisIDETLP- PCRC_CHECK- TLPXlatBlocked-
> > >                 CESta:  RxErr- BadTLP- BadDLLP- Rollover- Timeout-
> > > AdvNonFatalErr- CorrIntErr- HeaderOF-
> > >                 CEMsk:  RxErr- BadTLP- BadDLLP- Rollover- Timeout-
> > > AdvNonFatalErr+ CorrIntErr+ HeaderOF+
> > >                 AERCap: First Error Pointer: 00, ECRCGenCap+ ECRCGenEn-
> > > ECRCChkCap+ ECRCChkEn-
> > >                         MultHdrRecCap- MultHdrRecEn- TLPPfxPres- HdrLogCap-
> > >                 HeaderLog: 00000000 00000000 00000000 00000000
> > >         Capabilities: [148 v1] Secondary PCI Express
> > >                 LnkCtl3: LnkEquIntrruptEn- PerformEqu-
> > >                 LaneErrStat: 0
> > >         Capabilities: [158 v1] Transaction Processing Hints
> > >                 No steering table available
> > >         Capabilities: [1e4 v1] Latency Tolerance Reporting
> > >                 Max snoop latency: 1048576ns
> > >                 Max no snoop latency: 1048576ns
> > >         Capabilities: [1ec v1] L1 PM Substates
> > >                 L1SubCap: PCI-PM_L1.2+ PCI-PM_L1.1+ ASPM_L1.2+
> > > ASPM_L1.1+ L1_PM_Substates+
> > >                           PortCommonModeRestoreTime=70us PortTPowerOnTime=0us
> > >                 L1SubCtl1: PCI-PM_L1.2+ PCI-PM_L1.1+ ASPM_L1.2+ ASPM_L1.1+
> > >                            T_CommonMode=0us LTR1.2_Threshold=166912ns
> > >                 L1SubCtl2: T_PwrOn=90us
> > >         Kernel driver in use: ath12k_pci
> > >         Kernel modules: ath12k
> > >
> > > root@walt-ROG-zephyrus:~# iw reg get
> > > global
> > > country US: DFS-FCC
> > >          (902 - 904 @ 2), (N/A, 30), (N/A)
> > >          (904 - 920 @ 16), (N/A, 30), (N/A)
> > >          (920 - 928 @ 8), (N/A, 30), (N/A)
> > >          (2400 - 2472 @ 40), (N/A, 30), (N/A)
> > >          (5150 - 5250 @ 80), (N/A, 23), (N/A), AUTO-BW
> > >          (5250 - 5350 @ 80), (N/A, 24), (0 ms), DFS, AUTO-BW
> > >          (5470 - 5730 @ 160), (N/A, 24), (0 ms), DFS
> > >          (5730 - 5850 @ 80), (N/A, 30), (N/A), AUTO-BW
> > >          (5850 - 5895 @ 40), (N/A, 27), (N/A), NO-OUTDOOR, AUTO-BW, PASSIVE-SCAN
> > >          (5925 - 7125 @ 320), (N/A, 12), (N/A), NO-OUTDOOR, PASSIVE-SCAN
> > >          (57240 - 71000 @ 2160), (N/A, 40), (N/A)
> > >
> > > phy#0 (self-managed)
> > > country na: DFS-UNSET
> > >          (2402 - 2472 @ 40), (N/A, 20), (N/A)
> > >          (2457 - 2482 @ 20), (N/A, 20), (N/A), PASSIVE-SCAN
> > >          (5170 - 5330 @ 160), (N/A, 20), (N/A), AUTO-BW, PASSIVE-SCAN
> > >          (5490 - 5730 @ 160), (N/A, 20), (N/A), AUTO-BW, PASSIVE-SCAN
> > >          (5735 - 5895 @ 160), (N/A, 20), (N/A), AUTO-BW, PASSIVE-SCAN
> > >          (5945 - 7125 @ 320), (N/A, 30), (N/A), AUTO-BW, PASSIVE-SCAN
> >
> > I added the ath12k list to make sure this has the proper attention.
> > Since you are building from source, can you please test with the following patch:
> > https://msgid.link/20250401020840.357-1-quic_kangyang@xxxxxxxxxxx
> >
> > This is in my pending queue.
> >
> > /jeff
>
> Hi Jeff,
>
> No dice on the 6Ghz networks. It fixed up the registration info, but I
> still don't see any 6Ghz networks. Even from an 'iw wlp99s0 scan'
>
> global
> country US: DFS-FCC
>         (902 - 904 @ 2), (N/A, 30), (N/A)
>         (904 - 920 @ 16), (N/A, 30), (N/A)
>         (920 - 928 @ 8), (N/A, 30), (N/A)
>         (2400 - 2472 @ 40), (N/A, 30), (N/A)
>         (5150 - 5250 @ 80), (N/A, 23), (N/A), AUTO-BW
>         (5250 - 5350 @ 80), (N/A, 24), (0 ms), DFS, AUTO-BW
>         (5470 - 5730 @ 160), (N/A, 24), (0 ms), DFS
>         (5730 - 5850 @ 80), (N/A, 30), (N/A), AUTO-BW
>         (5850 - 5895 @ 40), (N/A, 27), (N/A), NO-OUTDOOR, AUTO-BW, PASSIVE-SCAN
>         (5925 - 7125 @ 320), (N/A, 12), (N/A), NO-OUTDOOR, PASSIVE-SCAN
>         (57240 - 71000 @ 2160), (N/A, 40), (N/A)
>
> phy#0 (self-managed)
> country US: DFS-FCC
>         (2402 - 2472 @ 40), (6, 30), (N/A)
>         (5170 - 5250 @ 80), (6, 24), (N/A), AUTO-BW
>         (5250 - 5330 @ 80), (6, 24), (0 ms), DFS, AUTO-BW
>         (5490 - 5730 @ 160), (6, 24), (0 ms), DFS, AUTO-BW
>         (5735 - 5855 @ 80), (6, 30), (N/A), AUTO-BW
>         (5855 - 5925 @ 40), (6, 30), (N/A), NO-OUTDOOR, AUTO-BW
>         (5925 - 7125 @ 320), (N/A, 30), (N/A), NO-OUTDOOR, AUTO-BW

Test on 6.14.0-rc5-wt-ath+, with the firmware you used.
I can get 6 GHz AP and connect to it.

ath12k_pci 0000:03:00.0: fw_version 0x100301e1 fw_build_timestamp 
2023-12-06 04:05 fw_build_id
QC_IMAGE_VERSION_STRING=WLAN.HMT.1.0.c5-00481-QCAHMTSWPL_V1.0_V2.0_SILICONZ-3

yk@yk-Mayan:~$ sudo iw wls1 scan | tee iw_scan.log:
BSS 62:03:7f:12:64:64(on wls1) -- associated
        TSF: 606308271476 usec (7d, 00:25:08)
        freq: 6275
        beacon interval: 100 TUs
        capability: ESS Privacy SpectrumMgmt ShortSlotTime (0x0511)
        signal: -17.00 dBm
        last seen: 52 ms ago
        Information elements from Probe Response frame:
        SSID: MLO-KANG-6G
and other 6 GHz APs:
	SSID: 6G-gxia
	SSID: NETGEAR97-6G
	……


kernel log:
[88158.033218] wls1: Inserted STA 62:03:7f:12:64:64
[88158.033232] wls1: authenticate with 62:03:7f:12:64:64 (local 
address=00:03:7f:37:12:54)
[88158.033242] wls1: send auth to 62:03:7f:12:64:64 (try 1/3)
[88158.041895] wls1: authenticated
[88158.041914] wls1: moving STA 62:03:7f:12:64:64 to state 2
[88158.044291] wls1: determined local STA to be EHT, BW limited to 320 MHz
[88158.045719] wls1: associate with 62:03:7f:12:64:64 (try 1/3)
[88158.067045] wls1: RX AssocResp from 62:03:7f:12:64:64 (capab=0x511 
status=0 aid=4)
[88158.089090] wls1: associated

I can even connect to it by Ubuntu GUI.

Can you update to 6.14.0-rc5-wt-ath+ and have a retry? Also please make 
sure that your wpa_supplicant/iw support 6 GHz(or directly update to the 
latest version).

If you still cannot find 6 GHz AP, you can set debug_mask to 0xffffffff 
to get ath12k logs. Then give it to us.


> -Walt