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USB WiFi 适配器问题

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USB WiFi 适配器问题

今天刚刚安装了 Ubuntu 18.10，我发现我的 USB WiFi 适配器无法正常工作。由于我的房间离路由器很远（大学生问题），所以我的内部适配器功率不够大，无法使用。有人能帮我吗？我已经在谷歌上搜索并试图解决这个问题，浪费了将近 15 个小时。详细信息：型号：Comfast CF-926AC V2.0 芯片：MT7612U（我在谷歌上搜索过，不确定它是否正确）

lsusb 结果

Bus 001 Device 002: ID 8087:8000 Intel Corp. 
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 002 Device 005: ID 04f2:b3f6 Chicony Electronics Co., Ltd HD WebCam (Acer)
Bus 002 Device 006: ID 04ca:300b Lite-On Technology Corp. Atheros AR3012 Bluetooth
Bus 002 Device 003: ID 040b:2212 Weltrend Semiconductor 
Bus 002 Device 002: ID 0d8c:0012 C-Media Electronics, Inc. 
Bus 002 Device 010: ID 0e8d:2870 MediaTek Inc. 
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

二甲基乙二醇

[13629.216531] usb 3-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[13629.216533] usb 3-1: Product: 802.11ac WLAN
[13629.216535] usb 3-1: Manufacturer: MediaTek Inc.
[13629.216536] usb 3-1: SerialNumber: 000000000
[13631.420164] usb 3-1: USB disconnect, device number 3
[13636.459839] usb 3-1: new SuperSpeed Gen 1 USB device number 4 using xhci_hcd
[13636.480781] usb 3-1: New USB device found, idVendor=0781, idProduct=5591, bcd

sudo lshw -C 网络

  *-network                 
       description: Ethernet interface
       product: NetXtreme BCM57786 Gigabit Ethernet PCIe
       vendor: Broadcom Inc. and subsidiaries
       physical id: 0
       bus info: pci@0000:01:00.0
       logical name: enp1s0f0
       version: 01
       serial: 20:1a:06:e6:e0:11
       capacity: 1Gbit/s
       width: 64 bits
       clock: 33MHz
       capabilities: pm vpd msi msix pciexpress bus_master cap_list rom ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=tg3 driverversion=3.137 firmware=sb latency=0 link=no multicast=yes port=twisted pair
       resources: irq:18 memory:c0410000-c041ffff memory:c0420000-c042ffff memory:9fb00000-9fb007ff
  *-network
       description: Wireless interface
       product: QCA9565 / AR9565 Wireless Network Adapter
       vendor: Qualcomm Atheros
       physical id: 0
       bus info: pci@0000:02:00.0
       logical name: wlp2s0
       version: 01
       serial: 28:e3:47:9e:81:a7
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list rom ethernet physical wireless
       configuration: broadcast=yes driver=ath9k driverversion=4.18.0-15-generic firmware=N/A ip=192.168.43.178 latency=0 link=yes multicast=yes wireless=IEEE 802.11
       resources: irq:19 memory:c0600000-c067ffff memory:c0680000-c068ffff

英希-Fxz

System:
  Host: Light Kernel: 4.18.0-15-generic x86_64 bits: 64 compiler: gcc 
  v: 8.2.0 Desktop: Gnome 3.30.1 Distro: Ubuntu 18.10 (Cosmic Cuttlefish) 
Machine:
  Type: Laptop System: Acer product: Aspire E1-572G v: V2.13 
  serial: <filter> 
  Mobo: Acer model: EA50_HW v: V2.13 serial: <filter> UEFI: Insyde v: 2.13 
  date: 11/21/2013 
Battery:
  ID-1: BAT1 charge: 24.7 Wh condition: 24.7/37.0 Wh (67%) 
  model: SANYO AL12A32 status: Full 
CPU:
  Topology: Dual Core model: Intel Core i7-4500U bits: 64 type: MT MCP 
  arch: Haswell rev: 1 L2 cache: 4096 KiB 
  flags: lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx bogomips: 19154 
  Speed: 798 MHz min/max: 800/3000 MHz Core speeds (MHz): 1: 798 2: 799 
  3: 798 4: 799 
Graphics:
  Device-1: Intel Haswell-ULT Integrated Graphics driver: i915 v: kernel 
  bus ID: 00:02.0 
  Device-2: AMD Opal XT [Radeon R7 M265/M365X/M465] driver: radeon v: kernel 
  bus ID: 03:00.0 
  Display: x11 server: X.Org 1.20.1 driver: radeon resolution: 1366x768~60Hz 
  OpenGL: renderer: Mesa DRI Intel Haswell Mobile v: 4.5 Mesa 18.2.2 
  direct render: Yes 
Audio:
  Device-1: Intel Haswell-ULT HD Audio driver: snd_hda_intel v: kernel 
  bus ID: 00:03.0 
  Device-2: Intel 8 Series HD Audio driver: snd_hda_intel v: kernel 
  bus ID: 00:1b.0 
  Device-3: C-Media type: USB driver: hid-generic,snd-usb-audio,usbhid 
  bus ID: 2-2:2 
  Sound Server: ALSA v: k4.18.0-15-generic 
Network:
  Device-1: Broadcom and subsidiaries NetXtreme BCM57786 Gigabit Ethernet 
  PCIe 
  driver: tg3 v: 3.137 port: N/A bus ID: 01:00.0 
  IF: enp1s0f0 state: down mac: <filter> 
  Device-2: Qualcomm Atheros QCA9565 / AR9565 Wireless Network Adapter 
  driver: ath9k v: kernel bus ID: 02:00.0 
  IF: wlp2s0 state: up mac: <filter> 
  Device-3: Lite-On Atheros AR3012 Bluetooth type: USB driver: btusb 
  bus ID: 2-5:6 
Drives:
  Local Storage: total: 931.51 GiB used: 17.10 GiB (1.8%) 
  ID-1: /dev/sda vendor: Western Digital model: WD10JPVX-22JC3T0 
  size: 931.51 GiB temp: 42 C 
Partition:
  ID-1: / size: 915.40 GiB used: 17.10 GiB (1.9%) fs: ext4 dev: /dev/sda2 
Sensors:
  System Temperatures: cpu: 44.0 C mobo: N/A gpu: radeon temp: 42 C 
  Fan Speeds (RPM): N/A 
Info:
  Processes: 258 Uptime: 6h 48m Memory: 7.67 GiB used: 2.13 GiB (27.8%) 
  Init: systemd runlevel: 5 Compilers: gcc: 8.2.0 Shell: bash v: 4.4.19 
  inxi: 3.0.24

答案1

我们可以测试 MT7612U 模块，检查mokutil --sb-state安全启动是否已禁用。如果已启用安全启动，请重新启动并在 BIOS 设置中禁用，但不要删除或删除任何安全启动键，然后在终端中执行 

sudo apt install git dkms build-essential
git clone https://github.com/jeremyb31/mt7612u.git
cd mt7612u
make sudo make installfw
sudo cp mt7612u.ko /lib/modules/$(uname -r)/kernel/drivers/net/wireless
sudo depmod -a
重启

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