rtl8812au causes kernel error when connecting TP-Link T4UH

[Karl-Philipp Richter]

After connecting the WiFi USB adapter `sudo dmesg` shows

```
[ 1521.747860] usb 1-1.1: USB disconnect, device number 3
[ 1523.968354] usb 1-1.1: new high-speed USB device number 6 using ehci-pci
[ 1524.047189] usb 1-1.1: New USB device found, idVendor=2357, idProduct=0101, bcdDevice= 0.00
[ 1524.047194] usb 1-1.1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 1524.047197] usb 1-1.1: Product: 802.11n NIC
[ 1524.047199] usb 1-1.1: Manufacturer: Realtek
[ 1524.047200] usb 1-1.1: SerialNumber: 123456
[ 1524.047711] ------------[ cut here ]------------
[ 1524.047766] WARNING: CPU: 1 PID: 11611 at net/wireless/core.c:890 wiphy_register+0x587/0x7f0 [cfg80211]
[ 1524.047767] Modules linked in: xt_conntrack xt_MASQUERADE nf_conntrack_netlink xfrm_user xfrm_algo nft_counter xt_addrtype nft_compat nft_chain_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 libcrc32c nf_tables nfnetlink br_netfilter bridge stp llc rfcomm ccm algif_aead des_generic libdes arc4 md4 aufs cmac algif_hash algif_skcipher af_alg bnep overlay cachefiles fscache bbswitch(OE) binfmt_misc snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic ledtrig_audio zfs(PO) zunicode(PO) zavl(PO) icp(PO) intel_rapl_msr nls_iso8859_1 mei_hdcp zcommon(PO) znvpair(PO) spl(O) zlua(PO) snd_hda_intel snd_intel_dspcfg snd_hda_codec snd_hda_core intel_rapl_common x86_pkg_temp_thermal snd_hwdep intel_powerclamp coretemp kvm_intel kvm crct10dif_pclmul ghash_clmulni_intel snd_pcm aesni_intel crypto_simd cryptd glue_helper rapl snd_seq_midi intel_cstate snd_seq_midi_event input_leds uvcvideo 8812au(OE) snd_rawmidi btusb iwldvm videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 serio_raw
[ 1524.047851] mac80211 rtsx_usb_ms videobuf2_common btrtl at24 efi_pstore snd_seq videodev memstick btbcm libarc4 btintel mc joydev snd_seq_device snd_timer bluetooth i915 iwlwifi snd ecdh_generic cfg80211 ecc hid_multitouch drm_kms_helper cec rc_core i2c_algo_bit soundcore fb_sys_fops mei_me syscopyarea sysfillrect mei sysimgblt ideapad_laptop sparse_keymap wmi mac_hid sch_fq_codel pkcs8_key_parser parport_pc ppdev lp parport drm ip_tables x_tables autofs4 rtsx_usb_sdmmc rtsx_usb hid_generic usbhid hid crc32_pclmul i2c_i801 psmouse ahci r8169 xhci_pci lpc_ich libahci i2c_smbus realtek xhci_pci_renesas video [last unloaded: nvidia]
[ 1524.047941] CPU: 1 PID: 11611 Comm: kworker/1:3 Tainted: P W OE 5.8.0-29-lowlatency #31-Ubuntu
[ 1524.047943] Hardware name: LENOVO 20221/INVALID, BIOS 71CN51WW(V1.21) 07/12/2013
[ 1524.047953] Workqueue: usb_hub_wq hub_event
[ 1524.047993] RIP: 0010:wiphy_register+0x587/0x7f0 [cfg80211]
[ 1524.047998] Code: 0b 66 41 89 54 24 30 e9 a7 fd ff ff 80 7a 1e 00 74 30 0f 0b b8 ea ff ff ff e9 0f fd ff ff 0f 0b b8 ea ff ff ff e9 03 fd ff ff <0f> 0b b8 ea ff ff ff e9 f7 fc ff ff 0f 0b b8 ea ff ff ff e9 eb fc
[ 1524.048001] RSP: 0018:ffffbe8e25c47710 EFLAGS: 00010246
[ 1524.048004] RAX: ffffffffc0b6a0f0 RBX: ffff9cda0ea0bae0 RCX: ffffffffc0b6a0e0
[ 1524.048007] RDX: ffffffffc0b6a180 RSI: 0000000000000025 RDI: 000000000000001e
[ 1524.048009] RBP: ffffbe8e25c47780 R08: 0000000000000004 R09: 0000000000000003
[ 1524.048011] R10: 0000000000000000 R11: 0000000000000000 R12: ffff9cda0ea0bae0
[ 1524.048013] R13: ffff9cd9b9f83000 R14: ffff9cda0ee7f830 R15: ffff9cda0ee7f830
[ 1524.048017] FS: 0000000000000000(0000) GS:ffff9cdaaf240000(0000) knlGS:0000000000000000
[ 1524.048019] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1524.048022] CR2: 00002789d76eef40 CR3: 000000017020a003 CR4: 00000000001606e0
[ 1524.048024] Call Trace:
[ 1524.048086] ? _rtw_malloc+0x2d/0x2f [8812au]
[ 1524.048137] ? _rtw_memcpy+0x10/0x12 [8812au]
[ 1524.048194] ? rtw_5g_rates_init+0x1a/0x1c [8812au]
[ 1524.048251] ? rtw_spt_band_alloc+0xb0/0xb2 [8812au]
[ 1524.048306] rtw_wdev_alloc+0xf6/0x29c [8812au]
[ 1524.048364] rtw_usb_if1_init+0xf0/0x20c [8812au]
[ 1524.048446] rtw_drv_init+0x24b/0x2d7 [8812au]
[ 1524.048461] usb_probe_interface+0xf1/0x2b0
[ 1524.048473] really_probe+0x2f4/0x430
[ 1524.048482] driver_probe_device+0xe9/0x160
[ 1524.048492] __device_attach_driver+0x71/0xd0
[ 1524.048500] ? driver_allows_async_probing+0x50/0x50
[ 1524.048510] bus_for_each_drv+0x84/0xd0
[ 1524.048518] __device_attach+0xde/0x1e0
[ 1524.048526] device_initial_probe+0x13/0x20
[ 1524.048532] bus_probe_device+0x8f/0xa0
[ 1524.048538] device_add+0x3ad/0x6a0
[ 1524.048544] usb_set_configuration+0x48e/0x850
[ 1524.048554] usb_generic_driver_probe+0x53/0x70
[ 1524.048559] usb_probe_device+0x3e/0x100
[ 1524.048564] really_probe+0x2f4/0x430
[ 1524.048569] driver_probe_device+0xe9/0x160
[ 1524.048574] __device_attach_driver+0x71/0xd0
[ 1524.048579] ? driver_allows_async_probing+0x50/0x50
[ 1524.048584] bus_for_each_drv+0x84/0xd0
[ 1524.048590] __device_attach+0xde/0x1e0
[ 1524.048594] device_initial_probe+0x13/0x20
[ 1524.048598] bus_probe_device+0x8f/0xa0
[ 1524.048604] device_add+0x3ad/0x6a0
[ 1524.048611] ? add_device_randomness+0x9f/0x130
[ 1524.048618] usb_new_device.cold+0xe7/0x27e
[ 1524.048624] hub_port_connect+0x44b/0x800
[ 1524.048631] hub_port_connect_change+0x9d/0x360
[ 1524.048638] port_event+0x315/0x4f0
[ 1524.048644] hub_event+0x1e7/0x440
[ 1524.048654] process_one_work+0x1df/0x3d0
[ 1524.048660] worker_thread+0x4d/0x350
[ 1524.048666] ? rescuer_thread+0x390/0x390
[ 1524.048672] kthread+0x145/0x170
[ 1524.048677] ? kthread_create_on_node+0x60/0x60
[ 1524.048684] ret_from_fork+0x22/0x30
[ 1524.048691] ---[ end trace b3756d2027af47ee ]---
[ 1524.114349] usb 1-1.1: reset high-speed USB device number 6 using ehci-pc
```

The device is not recognized and doesn't work.

ProblemType: Bug
DistroRelease: Ubuntu 20.10
Package: rtl8812au-dkms 4.3.8.12175.20140902+dfsg-0ubuntu13
ProcVersionSignature: Ubuntu 5.8.0-29.31-lowlatency 5.8.14
Uname: Linux 5.8.0-29-lowlatency x86_64
NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
ApportVersion: 2.20.11-0ubuntu50.2
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
Date: Sat Nov 28 18:36:40 2020
InstallationDate: Installed on 2020-10-02 (57 days ago)
InstallationMedia: Ubuntu 20.04.1 LTS "Focal Fossa" - Release amd64 (20200731)
PackageArchitecture: all
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=de_DE.UTF-8
 SHELL=/bin/bash
SourcePackage: rtl8812au
UpgradeStatus: Upgraded to groovy on 2020-11-22 (6 days ago)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Alexander Scheel (cipherboy)]

Just in case someone stumbles across this in the future. I believe the realtek driver version (here, 4.3.8....) doesn't work with newer kernel versions. I found a much newer driver here:

https://github.com/morrownr/8812au

This is driver version v5.9.3.2 (Released Oct 2020) and works with my card:

Bus 001 Device 003: ID 0bda:8812 Realtek Semiconductor Corp. RTL8812AU 802.11a/b/g/n/ac 2T2R DB WLAN Adapter

It appears the original upstream associated with this package is now dead; the maintainer might consider moving to another source.