I have had a problem with the 8812au driver. My dongle is a Linksys WUSB6300 on openSUSE 15.3
I had read on another thread that secured boot has to be disabled for the module to load, which does seem to be accurate. Per instructions previously received, here is the output of lsusb:
Bus 005 Device 008: ID 13b1:003f Linksys WUSB6300 802.11a/b/g/n/ac Wireless Adapter [Realtek RTL
8812AU]
I can also provide other information. With secure boot disabled, I get the following warning, but the dongle does work correctly:
new high-speed USB device number 8 using xhci_hcd
3701.430963] usb 5-2.2: New USB device found, idVendor=13b1, idProduct=003f, bcdDevice= 0.00
3701.430965] usb 5-2.2: New USB device strings: Mfr=1, Product=2, SerialNumber=3
3701.430966] usb 5-2.2: Product: WUSB6300
3701.430967] usb 5-2.2: Manufacturer: Linksys
3701.430967] usb 5-2.2: SerialNumber: 34
3701.535006] cfg80211: Loading compiled-in X.509 certificates for regulatory database
3701.535181] cfg80211: Loaded X.509 cert 'sforshee: 00b28ddf47aef9cea7'
3701.571878] 8812au: loading out-of-tree module taints kernel.
3701.572486] 8812au: module verification failed: signature and/or required key missing - taint
ing kernel
With secure boot enabled, I get the following error:
New USB device found, idVendor=13b1, idProduct=003f, bcdDevice= 0.00
57.208678] usb 5-2.2: New USB device strings: Mfr=1, Product=2, SerialNumber=3
57.208679] usb 5-2.2: Product: WUSB6300
57.208680] usb 5-2.2: Manufacturer: Linksys
57.208681] usb 5-2.2: SerialNumber: 34
57.322986] cfg80211: Loading compiled-in X.509 certificates for regulatory database
57.323103] cfg80211: Loaded X.509 cert 'sforshee: 00b28ddf47aef9cea7'
57.395528] 8812au: Loading of module with unavailable key is rejected
Finally, if I try to manually insert the driver under secure boot:
modprobe 8812au
modprobe: ERROR: could not insert '8812au': Key was rejected by service
The link in the Yast description of the driver points to a git hub version of the driver that is marked as obsolete, but that may not be an updated URL. I asked the git hub developer and he states that he is unaware of the problem and that it should work with secure boot, but that DKMS needs to be enabled.