Realtek rtl8811cu wifi linux

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Realtek RTL8811CU/RTL8821CU USB Wi-Fi adapter driver for Linux

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mcx-lab/RTL8811CU

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README.md

Realtek RTL8811CU/RTL8821CU USB Wi-Fi adapter driver version 5.4.1 for Linux 4.4.x up to 5.6.x

A few known wireless cards that use this driver include:

To build, you have to retrieve source and run make . If via Git, do following:

sudo apt-get update sudo apt-get install -y build-essential dkms git bc git clone https://github.com/fastoe/RTL8811CU.git cd RTL8811CU make sudo make install sudo reboot

Plug your USB Wi-Fi adapter into your PC.

Use the tool ‘iw’, please don’t use other tools like ‘airmon-ng’

iw dev wlan0 set monitor none 

About

Realtek RTL8811CU/RTL8821CU USB Wi-Fi adapter driver for Linux

Источник

Realtek rtl8811cu wifi linux

Предыстория : Первоначально этот usb-свисток был установлен на мой старый комп на базе LM19.3 на платформе AM2 и прекрасно установилось и работало. Далее я переехал на новый комп , без проблем система запустилась на том же SSD , ну и тоже все работает .

inxi -Fxz System: Host: Volp Kernel: 5.4.0-92-generic x86_64 bits: 64 compiler: gcc v: 7.5.0 Desktop: MATE 1.22.2 Distro: Linux Mint 19.3 Tricia base: Ubuntu 18.04 bionic Machine: Type: Desktop Mobo: KLLISRE model: X79 v: V1.2 serial: UEFI: American Megatrends v: 4.6.5 date: 11/15/2021 CPU: Topology: 8-Core model: Intel Xeon E5-2650L 0 bits: 64 type: MT MCP arch: Sandy Bridge rev: 7 L2 cache: 20.0 MiB flags: lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx bogomips: 57596 Speed: 1200 MHz min/max: 1200/2300 MHz Core speeds (MHz): 1: 1200 2: 1200 lshw -C network 3: 1200 4: 1200 5: 1200 6: 1200 7: 1250 8: 1202 9: 1200 10: 1200 11: 1200 12: 1200 13: 1200 14: 1200 15: 1200 16: 1200 Graphics: Device-1: AMD RV730 XT [Radeon HD 4670] vendor: Micro-Star MSI driver: radeon v: kernel bus ID: 03:00.0 Display: x11 server: X.Org 1.19.6 driver: ati,radeon unloaded: fbdev,modesetting,vesa resolution: 1280x1024~60Hz OpenGL: renderer: AMD RV730 (DRM 2.50.0 / 5.4.0-92-generic LLVM 10.0.0) v: 3.3 Mesa 20.0.8 direct render: Yes Audio: Device-1: Intel C600/X79 series High Definition Audio driver: snd_hda_intel v: kernel bus ID: 00:1b.0 Device-2: AMD RV710/730 HDMI Audio [Radeon HD 4000 series] vendor: Micro-Star MSI driver: snd_hda_intel v: kernel bus ID: 03:00.1 Sound Server: ALSA v: k5.4.0-92-generic Network: Device-1: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet driver: r8169 v: kernel port: d000 bus ID: 07:00.0 IF: enp7s0 state: up speed: 100 Mbps duplex: full mac: Device-2: Realtek type: USB driver: rtl8821cu bus ID: 2-1.7:3 IF: wlx002e2d300fc4 state: up mac: IF-ID-1: virbr0 state: down mac: IF-ID-2: virbr0-nic state: down mac: Drives: Local Storage: total: 350.27 GiB used: 32.94 GiB (9.4%) ID-1: /dev/nvme0n1 model: KLLISRE 256GB size: 238.47 GiB ID-2: /dev/sda model: KSQ120 size: 111.79 GiB Partition: ID-1: / size: 109.53 GiB used: 32.94 GiB (30.1%) fs: ext4 dev: /dev/sda1 Sensors: System Temperatures: cpu: 35.0 C mobo: N/A gpu: radeon temp: 49 C Fan Speeds (RPM): N/A Info: Processes: 351 Uptime: 2m Memory: 15.57 GiB used: 1.33 GiB (8.6%) Init: systemd runlevel: 5 Compilers: gcc: 7.5.0 Shell: bash v: 4.4.20 inxi: 3.0.32 

sudo lshw -C network *-network описание: Ethernet interface продукт: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller производитель: Realtek Semiconductor Co., Ltd. физический ID: 0 сведения о шине: pci@0000:07:00.0 логическое имя: enp7s0 версия: 06 серийный №: 2a:10:a1:15:0e:d8 размер: 100Mbit/s capacity: 1Gbit/s разрядность: 64 bits частота: 33MHz возможности: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation конфигурация: autonegotiation=on broadcast=yes driver=r8169 duplex=full firmware=rtl_nic/rtl8168e-2.fw ip=192.168.100.6 latency=0 link=yes multicast=yes port=MII speed=100Mbit/s ресурсы: IRQ:18 ioport:d000(размер=256) память:fbc00000-fbc00fff память:f0000000-f0003fff *-network:0 ВЫКЛЮЧЕНО описание: Ethernet interface физический ID: 2 логическое имя: virbr0-nic серийный №: 52:54:00:94:3a:fc размер: 10Mbit/s возможности: ethernet physical конфигурация: autonegotiation=off broadcast=yes driver=tun driverversion=1.6 duplex=full link=no multicast=yes port=twisted pair speed=10Mbit/s *-network:1 описание: Беспроводной интерфейс физический ID: 3 сведения о шине: usb@2:1.7 логическое имя: wlx002e2d300fc4 серийный №: 00:2e:2d:30:0f:c4 возможности: ethernet physical wireless конфигурация: broadcast=yes driver=rtl8821cu ip=10.42.0.1 multicast=yes wireless=IEEE 802.11bgn

System: Kernel: 5.13.0-23-generic x86_64 bits: 64 compiler: N/A Desktop: MATE 1.26.0 Distro: Linux Mint 20.3 Una base: Ubuntu 20.04 focal Machine: Type: Desktop Mobo: KLLISRE model: X79 v: V1.2 serial: UEFI: American Megatrends v: 4.6.5 date: 11/15/2021 CPU: Topology: 8-Core model: Intel Xeon E5-2650L 0 bits: 64 type: MT MCP arch: Sandy Bridge rev: 7 L2 cache: 20.0 MiB flags: avx lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx bogomips: 57600 Speed: 1290 MHz min/max: 1200/2300 MHz Core speeds (MHz): 1: 1200 2: 1200 3: 1200 4: 1243 5: 1454 6: 1200 7: 1200 8: 1207 9: 1200 10: 1200 11: 1200 12: 1200 13: 1200 14: 1200 15: 1200 16: 1209 Graphics: Device-1: AMD RV730 XT [Radeon HD 4670] vendor: Micro-Star MSI driver: radeon v: kernel bus ID: 03:00.0 Display: x11 server: X.Org 1.20.13 driver: ati,radeon unloaded: fbdev,modesetting,vesa resolution: 1280x1024~60Hz OpenGL: renderer: AMD RV730 (DRM 2.50.0 / 5.13.0-23-generic LLVM 12.0.0) v: 3.3 Mesa 21.0.3 direct render: Yes Audio: Device-1: Intel C600/X79 series High Definition Audio driver: snd_hda_intel v: kernel bus ID: 00:1b.0 Device-2: AMD RV710/730 HDMI Audio [Radeon HD 4000 series] vendor: Micro-Star MSI driver: snd_hda_intel v: kernel bus ID: 03:00.1 Sound Server: ALSA v: k5.13.0-23-generic Network: Device-1: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet driver: r8169 v: kernel port: d000 bus ID: 07:00.0 IF: enp7s0 state: up speed: 100 Mbps duplex: full mac: Drives: Local Storage: total: 350.27 GiB used: 104.83 GiB (29.9%) ID-1: /dev/nvme0n1 model: KLLISRE 256GB size: 238.47 GiB ID-2: /dev/sda model: KSQ120 size: 111.79 GiB Partition: ID-1: / size: 51.04 GiB used: 11.99 GiB (23.5%) fs: ext4 dev: /dev/nvme0n1p2 ID-2: /home size: 182.34 GiB used: 59.89 GiB (32.8%) fs: ext4 dev: /dev/nvme0n1p3 Sensors: System Temperatures: cpu: 31.0 C mobo: N/A gpu: radeon temp: 49 C Fan Speeds (RPM): fan-1: 0 fan-2: 1542 fan-3: 0 fan-4: 0 fan-5: 0 Voltages: 12v: N/A 5v: N/A 3.3v: 3.39 vbat: 3.31 Info: Processes: 325 Uptime: 22m Memory: 15.56 GiB used: 1.77 GiB (11.4%) Init: systemd runlevel: 5 Compilers: gcc: 9.3.0 Shell: bash v: 5.0.17 inxi: 3.0.38 

~/rtl8821ce$ sudo ./dkms-install.sh About to run dkms install steps. Creating symlink /var/lib/dkms/rtl8821ce/v5.5.2_34066.20200325/source -> /usr/src/rtl8821ce-v5.5.2_34066.20200325 DKMS: add completed. Kernel preparation unnecessary for this kernel. Skipping. Building module: cleaning build area. 'make' -j16 KVER=5.13.0-23-generic. Signing module: - /var/lib/dkms/rtl8821ce/v5.5.2_34066.20200325/5.13.0-23-generic/x86_64/module/8821ce.ko This system doesn't support Secure Boot Secure Boot not enabled on this system. cleaning build area. DKMS: build completed. 8821ce.ko: Running module version sanity check. - Original module - No original module exists within this kernel - Installation - Installing to /lib/modules/5.13.0-23-generic/updates/dkms/ depmod. DKMS: install completed. Finished running dkms install steps. 

GRUB_DEFAULT="0" #GRUB_TIMEOUT_STYLE="hidden" GRUB_TIMEOUT="1" GRUB_DISTRIBUTOR="`lsb_release -i -s 2> /dev/null || echo Debian`" GRUB_CMDLINE_LINUX_DEFAULT="quiet splash pci=noaer" GRUB_CMDLINE_LINUX="" # Uncomment to enable BadRAM filtering, modify to suit your needs # This works with Linux (no patch required) and with any kernel that obtains # the memory map information from GRUB (GNU Mach, kernel of FreeBSD . ) #GRUB_BADRAM="0x01234567,0xfefefefe,0x89abcdef,0xefefefef" # Uncomment to disable graphical terminal (grub-pc only) #GRUB_TERMINAL="console" # The resolution used on graphical terminal # note that you can use only modes which your graphic card supports via VBE # you can see them in real GRUB with the command `vbeinfo' #GRUB_GFXMODE="640x480" # Uncomment if you don't want GRUB to pass "root=UUID=xxx" parameter to Linux #GRUB_DISABLE_LINUX_UUID="true" # Uncomment to disable generation of recovery mode menu entries #GRUB_DISABLE_RECOVERY="true" # Uncomment to get a beep at grub start #GRUB_INIT_TUNE="480 440 1" 

Все делаю как в теме Установка драйвера Realtek 8821
По поводу Secury Boot — как такового в BIOS этого нет, есть только LAUNCH CSM , который я пробовал ставить и Enabe и Disable. Нашел такую команду mokutil

sudo mokutil --disable-validation This system doesn't support Secure Boot

Bus 002 Device 004: ID 046d:c542 Logitech, Inc. Bus 002 Device 003: ID 0bda:c811 Realtek Semiconductor Corp. Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub Bus 002 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 002: ID 2109:3431 VIA Labs, Inc. Hub Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub 

sudo lshw -C network *-network описание: Ethernet interface продукт: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller производитель: Realtek Semiconductor Co., Ltd. физический ID: 0 сведения о шине: pci@0000:07:00.0 логическое имя: enp7s0 версия: 06 серийный №: 2a:10:a1:15:0e:d8 размер: 100Mbit/s capacity: 1Gbit/s разрядность: 64 bits частота: 33MHz возможности: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation конфигурация: autonegotiation=on broadcast=yes driver=r8169 driverversion=5.13.0-23-generic duplex=full firmware=rtl_nic/rtl8168e-2.fw ip=192.168.100.6 latency=0 link=yes multicast=yes port=twisted pair speed=100Mbit/s ресурсы: IRQ:18 ioport:d000(размер=256) память:fbc00000-fbc00fff память:f0000000-f0003fff 

Источник

Realtek rtl8811cu wifi linux

Установка драйвера для Wi-Fi адаптера от Realtek под Linux может стать небольшой проблемой. Есть несколько версий драйверов на github, но не все подходят для ядра линукс версий 5.+ . Здесь покажу рабочий вариант

У меня USB адаптер, и вот так он выглядит в lsusb. ID: 0bda:c811

Bus 001 Device 003: ID 0bda:c811 Realtek Semiconductor Corp. 802.11ac NIC 

Установка

Вот этот драйвер подойдет к адаптерам на базе RTL8811CU RTL8821CU RTL8731AU, и к Linux kernel версий 4.19-6.1: https://github.com/morrownr/8821cu-20210916

Устанавливаю на Ubuntu 22.10:

sudo apt update && sudo apt install build-essential git dkms bc git clone https://github.com/morrownr/8821cu-20210916.git cd 8821cu-20210916 sudo ./install-driver.sh 

Если все прошло успешно, скрипт спросит “Do you want to edit the driver options file now?” — отказываемся. На предложение перезагрузки соглашаемся 🙂

После ребута получаем рабочий Wi-Fi адаптер:

Источник