BrosTrend AX1800 USB WiFi 6

General system Kernel, boot, graphics & hardware
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I have a BrosTrend AX1800 USB WiFi 6 adapter. It was working with the rtl88x2bu-dkms-git package until I ran updates on Friday. Since then, I have been unable to get it to fire up again.

I’m a long time linux user with Ubuntu being my daily driver for quite some time. I switched to Manjaro a couple of years ago and am now giving EndeavourOS a go. While many things in Linux are second nature, kernel mod troubleshooting has been rare for me. Pointing me in a direction to educate myself is always appreciated.

I tried uninstalling/reinstalling the package rtl88x2bu-dkms-git

I also tried a different package as a bit of research indicated this is a RTL8832AU chipset. rtl8852au-dkms-git seemed like a better math but, that did not get it going and the other did work at one point so I went back to it. Once I learn how to troubleshoot this, I may go and give this one a try.

A few commands I gleaned from another post on rtl88x2bu-dkms-git …

inxi -Fxxxaz … I’m not familiar with this one but, I’m going to do some learning once i get this back up and running. I’m extracting just the important parts. Let me know if something I left out was important.

System:
  Kernel: 6.7.0-arch3-1 arch: x86_64 bits: 64 compiler: gcc v: 13.2.1
    clocksource: tsc available: hpet,acpi_pm
    parameters: initrd=\084105a48cd641e0b415dee7334fbecf\6.7.0-arch3-1\initrd
    nvme_load=YES nowatchdog rw
    root=UUID=bc868c00-b23c-42db-9984-c73fda7951ff
    systemd.machine_id=084105a48cd641e0b415dee7334fbecf
Network:
  Device-1: Intel 82579LM Gigabit Network vendor: Hewlett-Packard
    driver: e1000e v: kernel port: f040 bus-ID: 00:19.0 chip-ID: 8086:1502
    class-ID: 0200
  IF: eno1 state: down mac: <filter>
  Device-2: Realtek 802.11ac WLAN Adapter driver: N/A type: USB rev: 2.0
    speed: 480 Mb/s lanes: 1 mode: 2.0 bus-ID: 3-2:2 chip-ID: 0bda:b832
    class-ID: 0000 serial: <filter>
  IF-ID-1: enp0s20u3 state: up speed: 425 Mbps duplex: half mac: <filter>

Device-2 above is my adapter.

LSUSB

Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 001 Device 003: ID 0a5c:21e8 Broadcom Corp. BCM20702A0 Bluetooth 4.0
Bus 001 Device 004: ID 046d:c52b Logitech, Inc. Unifying Receiver
Bus 001 Device 005: ID 046d:c52b Logitech, Inc. Unifying Receiver
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 002: ID 0bda:b832 Realtek Semiconductor Corp. 802.11ac WLAN Adapter
Bus 003 Device 005: ID 18d1:4eeb Google Inc. Pixel 7
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub

Bus 003 Device 002

Modprob … this uses DKMS. I had to look up what that meant. I’m uncertain if modprobe even applies here.

sudo modprobe rtl88x2bu
modprobe: FATAL: Module rtl88x2bu not found in directory /lib/modules/6.7.0-arch3-1

I noticed this command when the install was going on. Thought I’d see what the results where.

sudo dkms install --no-depmod rtl88x2bu/5.13.1.r191.980d7cc -k 6.7.0-arch3-1                                                 ─╯
Module rtl88x2bu/5.13.1.r191.980d7cc already installed on kernel 6.7.0-arch3-1 (x86_64), skip. You may override by specifying --force.

Any information you can supply to help me learn what would need to be done after an update to get this working would be greatly appreciated.

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What does this show?

lsusb | grep 0bda

Edit: From the id shown above it is a Realtek rtl8852bu

ID 0BDA:B832 - Default ID for USB Single-function, WiFi only
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@quilaho
Have you tried this package?

rtl8852bu-dkms-git
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I have not. I did notice that discrepancy when I was typing this up. I’ll give it a go.

1 Like
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Dammit … spent all morning researching that and I was just using the wrong package. That package had been previously installed, too, so, it must have been the one that quit working after updating.

So then, is there a logical reason it would quit after updating? There was a kernel update as part of the packages I updated last Friday. Is there an additional step I need to take after a kernel update?

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It could be that the package didn’t update properly with dkms when it rebuilds with a kernel update. Maybe I’m out to lunch on that but that’s my guess. :man_shrugging:

I always look at hardware in this way. You have to identify what chip it actually is in order to know if it’s a kernel module that runs it or if a package is needed to be installed in order for it to work. That’s just my thing. :wink:

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