rrafal1337
commented
1 year ago It seems that there is driver shipped with kernel 6.3.5 and it works with my hardware.
[Wed Jun 7 03:28:30 2023] usb 1-2: new high-speed USB device number 4 using xhci_hcd
[Wed Jun 7 03:28:30 2023] usb 1-2: New USB device found, idVendor=0bda, idProduct=c811, bcdDevice= 2.00
[Wed Jun 7 03:28:30 2023] usb 1-2: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[Wed Jun 7 03:28:30 2023] usb 1-2: Product: 802.11ac NIC
[Wed Jun 7 03:28:30 2023] usb 1-2: Manufacturer: Realtek
[Wed Jun 7 03:28:30 2023] usb 1-2: SerialNumber: 123456
[Wed Jun 7 03:28:30 2023] rtw_8821cu 1-2:1.0: Firmware version 24.11.0, H2C version 12
[Wed Jun 7 03:28:30 2023] usbcore: registered new interface driver rtw_8821cu
[Wed Jun 7 03:28:30 2023] rtw_8821cu 1-2:1.0 wlp4s0f3u2: renamed from wlan0rru04@seagull ~ 11:58:57 $ modinfo rtw88_8821cu
filename: /lib/modules/6.3.5-200.fc38.x86_64/kernel/drivers/net/wireless/realtek/rtw88/rtw88_8821cu.ko.xz
license: Dual BSD/GPL
description: Realtek 802.11ac wireless 8821cu driver
author: Hans Ulli Kroll <linux@ulli-kroll.de>
alias: usb:v0BDAp2006d*dc*dsc*dp*icFFiscFFipFFin*
alias: usb:v0BDAp8811d*dc*dsc*dp*icFFiscFFipFFin*
alias: usb:v0BDApC811d*dc*dsc*dp*icFFiscFFipFFin*
alias: usb:v0BDApC82Bd*dc*dsc*dp*icFFiscFFipFFin*
alias: usb:v0BDApC82Ad*dc*dsc*dp*icFFiscFFipFFin*
alias: usb:v0BDApC820d*dc*dsc*dp*icFFiscFFipFFin*
alias: usb:v0BDApC821d*dc*dsc*dp*icFFiscFFipFFin*
alias: usb:v0BDApB820d*dc*dsc*dp*icFFiscFFipFFin*
alias: usb:v0BDApB82Bd*dc*dsc*dp*icFFiscFFipFFin*
depends: rtw88_usb,rtw88_8821c
retpoline: Y
intree: Y
name: rtw88_8821cu
vermagic: 6.3.5-200.fc38.x86_64 SMP preempt mod_unload
sig_id: PKCS#7
signer: Fedora kernel signing key
sig_key: 76:77:D2:CA:8C:0A:B7:A7:39:59:A2:B0:7A:5A:E2:61:10:CB:E7:D0
sig_hashalgo: sha256
signature: 42:80:9C:8B:79:B8:CC:1B:E7:A0:40:00:8E:5B:8E:61:8B:25:DD:6B:
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24:D3:A9:15:3E:6F:EA:18:B5:C0:95:0D
So it means now cards based on rtl8821cu chip will work out of the box on latest kernels.
This is just a small change on top of https://github.com/brektrou/rtl8821CU/pull/209 that makes the driver compile on linux-6.3. Most of the diff comes from #209 and my only change is this: https://github.com/brektrou/rtl8821CU/pull/217/commits/39baac1112ce5bd89a1dff5031d5c8656bab110f
I'm not sure if
0is the right value for the extra parameter but the driver seems to work with it.