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Subject: Re: Realtek r8822be kernel module does not negotiate 802.11ac
 connection
From:   "David R. Bergstein" <david.r.bergstein@gmail.com>
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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Message-ID: <27e1a339-023a-360b-1e5d-1a156fc5edd2@gmail.com>
Date:   Fri, 1 Mar 2019 22:52:41 -0500
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Sender: linux-kernel-owner@vger.kernel.org
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Larry,

Sorry about all these extra replies.=C2=A0 Shortly after I sent my last
message my access point started recognizing the connection as 802.11ac
with PHY Rate / Modulation Rate of 866.6 Mbps.=C2=A0 What is somewhat
misleading is the information reported by iwconfig (see bit rate below).

$ iwconfig wlo1
wlo1=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 IEEE 802.11=C2=A0 ESSID:"XXXXXXXXXX-5G=
"=C2=A0
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 Mode:Managed=C2=A0=
 Frequency:5.22 GHz=C2=A0 Access Point:
xx:xx:xx:xx:xx:xx =C2=A0
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 Bit Rate=3D6.5 Mb/=
s=C2=A0=C2=A0 Tx-Power=3D23 dBm=C2=A0=C2=A0
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 Retry short limit:=
7=C2=A0=C2=A0 RTS thr:off=C2=A0=C2=A0 Fragment thr:off
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 Power Management:o=
n
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 Link Quality=3D70/=
70=C2=A0 Signal level=3D-40 dBm=C2=A0
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 Rx invalid nwid:0=C2=
=A0 Rx invalid crypt:0=C2=A0 Rx invalid frag:0
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 Tx excessive retri=
es:0=C2=A0 Invalid misc:11=C2=A0=C2=A0 Missed beacon:0

Sincerely,

David R. Bergstein

On 3/1/19 10:16 PM, David R. Bergstein wrote:
> Larry,
>
> Please disregard my last message.=C2=A0 The firmware is now installed a=
nd the
> rtw88 module is working with my wireless router.=C2=A0 The next hurdle
> appears to be setting the speed to 802.11ac as it is currently
> connecting as an 802.11n client.
>
> Sincerely,
>
> David R. Bergstein
>
> On 3/1/19 9:55 PM, David R. Bergstein wrote:
>> Larry,
>>
>> Following up to your last reply, I blacklisted the r8822be module,
>> rebooted and was unable to bring up the wireless interface via rtw88.=C2=
=A0
>> Below are some errors recorded in my system log:
>>
>> =C2=A0
>> [=C2=A0 267.509818] rtw_pci 0000:3d:00.0: Direct firmware load for
>> rtw88/rtw8822b_fw.bin failed with error -2
>> [=C2=A0 267.509821] rtw_pci 0000:3d:00.0: failed to request firmware
>> [=C2=A0 267.511068] rtw_pci 0000:3d:00.0: mac power on failed
>> [=C2=A0 267.511072] rtw_pci 0000:3d:00.0: failed to power on mac
>> [=C2=A0 267.511073] rtw_pci 0000:3d:00.0: failed to setup chip efuse i=
nfo
>> [=C2=A0 267.511075] rtw_pci 0000:3d:00.0: failed to setup chip informa=
tion
>> [=C2=A0 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.=C2=A0 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.=C2=A0 I cannot however se=
em to get
>>>> my system to actually use the module.=C2=A0 Just to recap this is an=
 HP Omen
>>>> laptop with secure boot disabled.=C2=A0 Upon boot-up both the new rt=
w88 and
>>>> old r8822be modules are loaded.=C2=A0 If I unload the r8822be module=
 the wifi
>>>> network connection gets terminated, even if I unload/reload the rtw8=
8
>>>> module.
>>>>
>>>> Is there something else I should be doing prior to invoking rtw88, e=
=2Eg.,
>>>> 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
>>>