wifi dongle connected to USB/pci card, seen in hardware, but no wl* device created; udev, driver, &/or config?

wifi dongle connected to USB/pci card, seen in hardware, but no wl* device created; udev, driver, &/or config?

[PGNet Dev]

hi,


I've got an older desktop running Fedora32 with

	uname -rm
		5.9.11-100.fc32.x86_64 x86_64

I've plugged a wifi dongle into a multiport USB3 pci card,
  

	lspci | grep "USB 3"
		02:00.0 USB controller: Fresco Logic FL1100 USB 3.0 Host Controller (rev 10)


On boot, the wifi hardware's seen

	dmesg
		...
		[    2.639873] systemd[1]: Starting udev Kernel Device Manager...
		[    2.643850] usb 8-4: New USB device found, idVendor=0bda, idProduct=b812, bcdDevice= 2.10
		[    2.643853] usb 8-4: New USB device strings: Mfr=1, Product=2, SerialNumber=3
		[    2.643854] usb 8-4: Product: 802.11ac NIC
		[    2.643855] usb 8-4: Manufacturer: Realtek
		[    2.643856] usb 8-4: SerialNumber: 123456
		[    2.682834] systemd[1]: Started udev Kernel Device Manager.
		...

	lsusb | grep 008
		Bus 008 Device 003: ID 0bda:b812 Realtek Semiconductor Corp. RTL88x2bu [AC1200 Techkey]
		Bus 008 Device 002: ID 2109:2812 VIA Labs, Inc. VL812 Hub
		Bus 008 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

but hardware check for wlan/wlp* device, returns empty

	iw list
		(empty)

	hwinfo --wlan
		(empty)

in more detail,

	hwinfo

the device is 'there', but unclassified

	...
	72: USB 00.0: 0000 Unclassified device
	[Created at usb.122]
	Unique ID: +4pb.2IcWyDScHM3
	Parent ID: FZIx.tisqRJYDXEC
	SysFS ID: /devices/pci0000:00/0000:00:04.0/0000:02:00.0/usb8/8-4/8-4:1.0
	SysFS BusID: 8-4:1.0
	Hardware Class: unknown
	Model: "Realtek 802.11ac NIC"
	Hotplug: USB
	Vendor: usb 0x0bda "Realtek Semiconductor Corp."
	Device: usb 0xb812 "802.11ac NIC"
	Revision: "2.10"
	Serial ID: "123456"
	Speed: 480 Mbps
	Module Alias: "usb:v0BDApB812d0210dc00dsc00dp00icFFiscFFipFFin00"
	Config Status: cfg=new, avail=yes, need=no, active=unknown
	Attached to: #71 (Hub)
	...


existing default udev rules aren't creating a wlan device; I'd expected that they would ...

To get the device created -- when attached to the pci card -- is udev the right mechanism?

I'm not clear if the problem here is udev, driver &/or my config.

IF udev, what specific rule would create a USB network device for the dongle, either with a wlp* auto-name, or if need be, "wlan0"?

Or, what else needs be done to init the wl* dev?

Re: wifi dongle connected to USB/pci card, seen in hardware, but no wl* device created; udev, driver, &/or config?

[Samuel Sieb]

On 12/5/20 1:25 PM, PGNet Dev wrote:
>      lsusb | grep 008
>          Bus 008 Device 003: ID 0bda:b812 Realtek Semiconductor Corp. 
> RTL88x2bu [AC1200 Techkey]

That chipset doesn't have a kernel driver.

There are a couple of available options:
https://github.com/cilynx/rtl88x2bu
https://github.com/RinCat/RTL88x2BU-Linux-Driver

> existing default udev rules aren't creating a wlan device; I'd expected 
> that they would ...

The device can only be created if there's a driver to create it.

Re: wifi dongle connected to USB/pci card, seen in hardware, but no wl* device created; udev, driver, &/or config?

[PGNet Dev]

On 12/5/20 1:51 PM, Samuel Sieb wrote:

> On 12/5/20 1:25 PM, PGNet Dev wrote:

>>      lsusb | grep 008

>>          Bus 008 Device 003: ID 0bda:b812 Realtek Semiconductor Corp. RTL88x2bu [AC1200 Techkey]

> 

> There are a couple of available options:

> https://github.com/cilynx/rtl88x2bu

> https://github.com/RinCat/RTL88x2BU-Linux-Driver

> 

>> existing default udev rules aren't creating a wlan device; I'd expected that they would ...

> 

> The device can only be created if there's a driver to create it.



::facepalm::

well, it certainly help if I'd not just googled for ac1200 but ALSO paid attention to the fact I'd installed  88x2*a*u!



> https://github.com/aircrack-ng/rtl8812au



with CORRECT driver



> https://github.com/RinCat/RTL88x2BU-Linux-Driver





dkms-installed, on boot



dmesg | grep wl

    [   22.083177] RTW: rtw_ndev_init(wlan0) if1 mac_addr=44:01:bb:33:c4:1c

    [   22.318059] rtl88x2bu 8-4:1.0 wlp2s0u4: renamed from wlan0



iw dev

phy#0

         Interface wlp2s0u4

                 ifindex 3

                 wdev 0x1

                 addr 44:01:bb:33:c4:1c

                 type managed

                 txpower 42949572.96 dBm



hwinfo --wlan | egrep "Device:|Modules:|File:"

   Device: usb 0xb812 "802.11ac NIC"

   Driver Modules: "88x2bu"

   Device File: wlp2s0u4



pebkac. again.



thx o/