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Subject: Re: Realtek r8822be kernel module does not negotiate 802.11ac
 connection
To:     Larry Finger <Larry.Finger@lwfinger.net>,
        Tony Chuang <yhchuang@realtek.com>
Cc:     Pkshih <pkshih@realtek.com>,
        "linux-wireless@vger.kernel.org" <linux-wireless@vger.kernel.org>,
        "netdev@vger.kernel.org" <netdev@vger.kernel.org>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
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From:   "David R. Bergstein" <david.r.bergstein@gmail.com>
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Message-ID: <2e39892d-d206-e87f-c802-d427c54277cf@gmail.com>
Date:   Fri, 1 Mar 2019 21:55:10 -0500
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Larry,

Following up to your last reply, I blacklisted the r8822be module,
rebooted and was unable to bring up the wireless interface via rtw88. 
Below are some errors recorded in my system log:

 
[  267.509818] rtw_pci 0000:3d:00.0: Direct firmware load for
rtw88/rtw8822b_fw.bin failed with error -2
[  267.509821] rtw_pci 0000:3d:00.0: failed to request firmware
[  267.511068] rtw_pci 0000:3d:00.0: mac power on failed
[  267.511072] rtw_pci 0000:3d:00.0: failed to power on mac
[  267.511073] rtw_pci 0000:3d:00.0: failed to setup chip efuse info
[  267.511075] rtw_pci 0000:3d:00.0: failed to setup chip information
[  267.512817] rtw_pci: probe of 0000:3d:00.0 failed with error -114

As directed, I used the rtwpci module to perform load/unload the rtw88
module before I saw the errors above.  Do I still need to install firmware?

Sincerely,

David R. Bergstein

On 3/1/19 8:46 PM, Larry Finger wrote:
> On 3/1/19 4:26 PM, David R. Bergstein wrote:
>> Larry,
>>
>> Thanks for the response and detailed instructions, which allowed me to
>> build and install the rtw88 kernel module.  I cannot however seem to get
>> my system to actually use the module.  Just to recap this is an HP Omen
>> laptop with secure boot disabled.  Upon boot-up both the new rtw88 and
>> old r8822be modules are loaded.  If I unload the r8822be module the wifi
>> network connection gets terminated, even if I unload/reload the rtw88
>> module.
>>
>> Is there something else I should be doing prior to invoking rtw88, e.g.,
>> blacklisting the old module?
>
> Yes, r8822be must be blacklisted. Use the lsmod command to see what
> modules are actually loaded. You load/unload rtw88 using the rtwpci
> module.
>
> Larry
>