Re: ath12k: No 6GHz Wireless found

[Kang Yang <quic_kangyang@quicinc.com>]

On 4/4/2025 12:04 AM, Walt Holman wrote:
> On Thu, Apr 3, 2025 at 3:20 AM Kang Yang <quic_kangyang@quicinc.com> wrote:
>>
>>
>>
>> On 4/3/2025 1:48 AM, Walt Holman wrote:
>>> On Tue, Apr 1, 2025 at 9:48 PM Kang Yang <quic_kangyang@quicinc.com> wrote:
>>
>>>>
>>>> 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
>>>>>
>>>>
>>>
>>> OK, I retested with the wt-ath 033125 tagged build. This included the
>>> patch the Jeff suggested I try, but the rest of the tree was clean.
>>> Still no 6ghz Wifi. I'm attaching a log file of the boot and first few
>>> seconds with the debug mask turned on. I noticed that if I rmmod the
>>> module and then modprobe it, it complains about not finding
>>> firmware-2.bin, however, I thought that was only for the qcn based
>>> chip? The HW info from dmesg looks like this:
>>>
>>
>> I cannot find this tag...
>>
>>
>>   From the log, the 6 GHz channel should work. When scan is triggered, FW
>> shall send probe req on these channels. If AP send probe resp, station
>> shall find the AP.
>>
>>
>>
>>
>>> [    6.070282] ath12k_pci 0000:63:00.0: BAR 0 [mem
>>> 0xdd800000-0xdd9fffff 64bit]: assigned
>>> [    6.070310] ath12k_pci 0000:63:00.0: enabling device (0000 -> 0002)
>>> [    6.071249] ath12k_pci 0000:63:00.0: MSI vectors: 16
>>> [    6.071254] ath12k_pci 0000:63:00.0: Hardware name: wcn7850 hw2.0
>>> [    6.596331] ath12k_pci 0000:63:00.0: qmi dma allocation failed
>>> (7077888 B type 1), will try later with sma
>>> ll size
>>> [    6.604041] ath12k_pci 0000:63:00.0: chip_id 0x2 chip_family 0x4
>>> board_id 0xff soc_id 0x40170200
>>> [    6.604044] ath12k_pci 0000:63:00.0: 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-
>>>
>>> Also, I noticed when looking through the debug logs there are the
>>> occasional WARNING statements from a BUG it appears. They trace back
>>> to the mac.c file inside the ath12k code. There should be some in the
>>> debug log that's attached. Let me know if I can do anything else.
>>> Thanks,
>>>
>>
>>
>> I have never seen this warning on my upstream setup...Not sure if you
>> have changed anything or using the correct code base.
>>
>> Jeff merged this patch-set into ath-202504021602. Can you try on this
>> branch?
>>
>> git clone https://git.kernel.org/pub/scm/linux/kernel/git/ath/ath.git/
>> git pull
>> git reset --hard ath-202504021602
>> compile and install...
>>
>> Also make sure that the firmware you used is from the same folder, don't
>> mix with other folders:
>> linux-firmware/ath12k/WCN7850/hw2.0
>>
>> 1. rmmod/insmod(debug_mask=0xffff)
>> 2. iw reg get
>> 3. iw reg set US
>> 4. iw xxx scan
>> wait and collect logs.
>>
>> don't do anything else.
>>
>>
>> Also, can you show me your AP configuration.
>> If you have another 6 GHz AP, you can have a try(better different brands).
>>

Thanks for testing.

Could you share your AP configuration?


>>
>> If you have sniffer, could please capture packets during testing?


Can you capture packets during the testing? I need to check probe req 
and probe resp.

>>
>> Thanks!
>>
>>> -Walt
>>
> OK, I cloned and built the kernel based on your instructions in your
> last email. Originally, the result was identical to my last email,
> including the WARNINGS. The .config I use is configured for a fully RT
> PREEMPT kernel, which I wondered if that was why I was receiving the
> WARNING. So I configured it as a Low Latency PREEMPT Desktop without
> the RT_PREEMPT and that eliminated the WARNING. However, still no 6Ghz
> networks. The firmware I'm using is straight from kernel.org GIT and I
> do a 'make install; make dedup' to install it. I believe it should be
> good. Attached is the latest log file.
> 
> -Walt