BBS:      TELESC.NET.BR
Assunto:  Re: searching for a specific kind of update
De:       Computer Nerd Kev
Data:     Tue, 13 Jan 2026 10:38:58 +1000
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bp@www.zefox.net wrote:
> Probably kernel modules. Right now lsusb identifies the wifi device as
> Bus 001 Device 040: ID 2357:012d TP-Link Archer T3U [Realtek RTL8812BU]
> 
> Running dmesg through grep wlan0 finds
> [1549933.629235] rtw_8822bu 1-1.5.2:1.0 wlan0: disabling HT/VHT/HE as WMM/QoS is not supported by the AP
> 
> The wifi dongle works but not well. When the wireless connection gets
> dodgy the entire USB system, including keyboard and trackpad, slow to
> the point that the machine can't be controlled and must be power-cycled.
> 
> If I try 
> bob@raspberrypi:~ $ sudo apt search rtw_8822bu
> Sorting... Done
> Full Text Search... Done
> 
> nothing is found, not even the existing driver.
> 
> Am I looking with the wrong tool?

"modinfo rtw_8822bu" will give you some info on the driver, though
no direct info on how it was installed. On Debian (not RPiOS) I see
there are similar modules starting with "rtw88_" installed with the
base, but no "rtw_8822bu.ko". rtw88 apparantly supports your
TP-Link Archer T3U RTL8812BU device:

https://deepwiki.com/lwfinger/rtw88/1.1-supported-hardware

Check if you have rtw88 drivers already installed:
 cd /lib/modules
 find -name 'rtw88*'

If so, maybe you just need to blacklist the rtw_8822bu driver to
use them? Unless the rtw88 driver is used already and it wrongly
logs as "rtw_8822bu", in which case the "modinfo rtw_8822bu"
command will fail, and look at the output of "lsmod" to see
exactly which "rtw" module/s are being used.

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