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Sender: Larry Finger <larry.finger@gmail.com>
Message-ID: <2a1b8b59-845e-d3b2-6195-2c74ce818341@lwfinger.net>
Date:   Wed, 14 Dec 2022 11:02:34 -0600
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Subject: Re: Realtek 1d3e:c826 not working
To:     James <bjlockie@lockie.ca>,
        Joshua Richenhagen <richenhagen@gmail.com>
Cc:     linux-wireless@vger.kernel.org
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 <27bdcf85-ed2f-40f6-a285-76879a8fbc6a@lockie.ca>
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From:   Larry Finger <Larry.Finger@lwfinger.net>
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On 12/12/22 13:19, James wrote:
> https://askubuntu.com/questions/1412450/network-driver-for-realtek-10ecb852
> 
> Dec. 12, 2022 11:43:59 Joshua Richenhagen <richenhagen@gmail.com>:
> 
>> Hello,
>>
>> on my new Xiaomi Book Pro 14 Ryzen with Realtek b852 using newest
>> kernel Linux 6.1 Wifi is not recognized at all. Is the PCIe device ID
>> missing in the rtw89 driver?
>>
>> 01:00.0 Network controller: Realtek Semiconductor Co., Ltd. Device b852
>>          Subsystem: Device 1d3e:c826
>>          Flags: fast devsel, IRQ 255, IOMMU group 11
>>          I/O ports at 2000 [disabled] [size=256]
>>          Memory at c0900000 (64-bit, non-prefetchable) [disabled] [size=1M]
>>          Capabilities: [40] Power Management version 3
>>          Capabilities: [50] MSI: Enable- Count=1/1 Maskable- 64bit+
>>          Capabilities: [70] Express Endpoint, MSI 00
>>          Capabilities: [100] Advanced Error Reporting
>>          Capabilities: [148] Device Serial Number 00-e0-4c-ff-fe-88-52-01
>>          Capabilities: [158] Latency Tolerance Reporting
>>          Capabilities: [160] L1 PM Substates
>>
>> Kinds regards
>> Joshua Richenhagen

That driver will not be in the kernel until kernel 6.2, which is predicted to be 
released on Feb. 19, 2023.

In the meantime, clone the rtw89 repository at 
https://github.com/lwfinger/rtw89.git, and follow the instructions in README.md 
in the cloned repo. Pat particular attention to the last paragraph if you are 
running Ubuntu. For some reason, they have not included the firmware for this 
device even though it has been in the official linux-firmware repo since October.

Larry