Re: ALFA RTL8812au connection is unstable.

From: Laurent Cimon <laurent_at_nilio.ca>
Date: Wed, 01 Nov 2023 15:09:51 UTC 
On 11/1/23 09:53, Bjoern A. Zeeb wrote:

> On Wed, 1 Nov 2023, Laurent Cimon wrote:
>
>> Hello,
>>
>> I have an RTL8812au card on FreeBSD 14.0-STABLE and the connection is 
>> very unstable.
>> For example, when downloading packages with pkg, the download rate 
>> goes down to 0
>> for a few seconds, then goes up not above 2MB/s for a few seconds, 
>> it's often under 500KB/s
>> and often does not last longer than a second or so, then goes back to 
>> 0 for a few seconds.
>>
>> I haven't felt this instability when browsing the web or pinging, it 
>> seems to happen during longer connections.
>
> How many networks are in your neighbourhood?
>
> ifconfig wlan0 list scan
>
> will tell to some degree.
>
> /bz
>
>
>
>> Here are some system information. I've tried changing a few tunables 
>> but nothing changed.
>>
>> root@JOY# sysctl -a | grep rtwn
>> rtwn0 on uhub3
>> rtwn0: <Realtek 802.11n NIC, class 0/0, rev 2.00/0.00, addr 2> on usbus5
>> rtwn0: MAC/BB RTL8812AU, RF 6052 2T2R
>> <118>   parent interface: rtwn0
>> net.wlan.0.%parent: rtwn0
>> net.wlan.devices: rtwn0
>>         value:  /boot/kernel/rtwn-rtl8812aufw.ko
>>         value:  /boot/kernel/if_rtwn_usb.ko
>>         value:  /boot/kernel/rtwn.ko
>> dev.rtwn.0.rx_buf_size: 48
>> dev.rtwn.0.ratectl_selected: 1
>> dev.rtwn.0.ratectl: 2
>> dev.rtwn.0.hwcrypto: 1
>> dev.rtwn.0.debug: 0
>> dev.rtwn.0.ht40: 0
>> dev.rtwn.0.%parent: uhub3
>> dev.rtwn.0.%pnpinfo: vendor=0x0bda product=0x8812 devclass=0x00 
>> devsubclass=0x00 devproto=0x00 sernum="123456" release=0x0000 
>> mode=host intclass=0xff intsubclass=0xff intprotocol=0xff
>> dev.rtwn.0.%location: bus=5 hubaddr=1 port=2 devaddr=2 interface=0 
>> ugen=ugen5.2
>> dev.rtwn.0.%driver: rtwn
>> dev.rtwn.0.%desc: Realtek 802.11n NIC, class 0/0, rev 2.00/0.00, addr 2
>> dev.rtwn.%parent:
>>
>> Thank you,
>> Laurent
>>
>>
>
ifconfig wlan0 list scan shows 8 including mine.


Laurent