I had a lot of trouble trying to make this adapter(EDUP EP AC1621) work. It's working now but after some time it drops the connection, keeps asking for password forever, and the wi-fi icon gets ... over it.
Here's how I make it work again:
1- sudo sh -c "echo '2' > /sys/module/8814au/parameters/rtw_switch_usb_mode"
2- reboot
sometimes it doesn't work, then I keep repeating the process until it work
RIGHT NOW the connection dropped. I'll print outputs here with it not connected, then save the text to post when I get online.
inxi -Fxz
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System: Kernel: 5.8.0-55-generic x86_64 bits: 64 compiler: N/A Desktop: Cinnamon 4.6.7 Distro: Linux Mint 20 Ulyana
base: Ubuntu 20.04 focal
Machine: Type: Desktop Mobo: ASRock model: B450M Steel Legend serial: <filter> UEFI [Legacy]: American Megatrends v: P2.90
date: 11/27/2019
CPU: Topology: Quad Core model: AMD Ryzen 5 3400G with Radeon Vega Graphics bits: 64 type: MT MCP arch: Zen+ rev: 1
L2 cache: 2048 KiB
flags: avx avx2 lm nx pae sse sse2 sse3 sse4_1 sse4_2 sse4a ssse3 svm bogomips: 59094
Speed: 1283 MHz min/max: 1400/3700 MHz Core speeds (MHz): 1: 1354 2: 1416 3: 1324 4: 1361 5: 1365 6: 1478 7: 1346
8: 1332
Graphics: Device-1: Advanced Micro Devices [AMD/ATI] Picasso driver: amdgpu v: kernel bus ID: 07:00.0
Display: x11 server: X.Org 1.20.9 driver: amdgpu,ati unloaded: fbdev,modesetting,vesa
resolution: 2560x1080~60Hz, 2560x1080~60Hz
OpenGL: renderer: AMD RAVEN (DRM 3.38.0 5.8.0-55-generic LLVM 11.0.0) v: 4.6 Mesa 20.2.6 direct render: Yes
Audio: Device-1: Advanced Micro Devices [AMD/ATI] Raven/Raven2/Fenghuang HDMI/DP Audio driver: snd_hda_intel v: kernel
bus ID: 07:00.1
Device-2: Advanced Micro Devices [AMD] Family 17h HD Audio vendor: ASRock driver: snd_hda_intel v: kernel
bus ID: 07:00.6
Device-3: Huawei HiCamera type: USB driver: snd-usb-audio,uvcvideo bus ID: 3-3:2
Sound Server: ALSA v: k5.8.0-55-generic
Network: Device-1: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet vendor: ASRock driver: r8169 v: kernel port: f000
bus ID: 04:00.0
IF: enp4s0 state: down mac: <filter>
Device-2: Realtek RTL8814AU 802.11a/b/g/n/ac Wireless Adapter type: USB driver: 8814au bus ID: 1-4:2
IF: wlxe84e068d4bbf state: down mac: <filter>
IF-ID-1: virbr0 state: down mac: <filter>
IF-ID-2: virbr0-nic state: down mac: <filter>
Drives: Local Storage: total: 465.76 GiB used: 150.29 GiB (32.3%)
ID-1: /dev/nvme0n1 vendor: Crucial model: CT500P1SSD8 size: 465.76 GiB
Partition: ID-1: / size: 204.15 GiB used: 150.29 GiB (73.6%) fs: ext4 dev: /dev/nvme0n1p6
ID-2: swap-1 size: 24.00 GiB used: 0 KiB (0.0%) fs: swap dev: /dev/nvme0n1p5
Sensors: System Temperatures: cpu: 33.2 C mobo: N/A gpu: amdgpu temp: 33 C
Fan Speeds (RPM): N/A
Info: Processes: 340 Uptime: 19m Memory: 13.59 GiB used: 2.81 GiB (20.6%) Init: systemd runlevel: 5 Compilers: gcc: 9.3.0
Shell: bash v: 5.0.17 inxi: 3.0.38
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Bus 006 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 005 Device 002: ID 046d:c31c Logitech, Inc. Keyboard K120
Bus 005 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 003 Device 003: ID 1532:005c Razer USA, Ltd Razer DeathAdder Elite
Bus 003 Device 002: ID 12d1:4321 Huawei Technologies Co., Ltd. HiCamera
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 002: ID 0bda:8813 Realtek Semiconductor Corp. RTL8814AU 802.11a/b/g/n/ac Wireless Adapter
Bus 001 Device 003: ID 0bda:8771 Realtek Semiconductor Corp. Bluetooth Radio
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
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0: hci0: Bluetooth
Soft blocked: no
Hard blocked: no
1: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
dkms status
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8812au, 5.6.4.2_35491.20191025, 5.4.0-47-generic, x86_64: installed
8812au, 5.6.4.2_35491.20191025, 5.4.0-74-generic, x86_64: installed
8812au, 5.6.4.2_35491.20191025, 5.8.0-55-generic, x86_64: installed
8814au, 5.8.5.1, 5.4.0-47-generic, x86_64: installed (WARNING! Diff between built and installed module!)
8814au, 5.8.5.1, 5.4.0-74-generic, x86_64: installed
8814au, 5.8.5.1, 5.8.0-55-generic, x86_64: installed