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无线网络已禁用

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无线网络已禁用

今天 Ubuntu 更新后，我失去了连接 wifi 的能力。当我打开网络设置时，它已启用，但找不到任何网络。我今天开始使用 18.04，希望升级到 20.04 可以解决这个问题，但没有运气。我整天都在寻找解决方案，但找不到任何答案。以下是通常要求的信息：

lshw-c 网络：

*-generic DISABLED        
       description: Wireless interface
       product: RTL8822BE 802.11a/b/g/n/ac WiFi adapter
       vendor: Realtek Semiconductor Co., Ltd.
       physical id: 0
       bus info: pci@0000:07:00.0
       logical name: wlp7s0
       version: ff
       serial: 48:5f:99:81:69:95
       width: 32 bits
       clock: 66MHz
       capabilities: bus_master vga_palette cap_list ethernet physical wireless
       configuration: broadcast=yes driver=rtw_pci driverversion=5.4.0-42-generic firmware=N/A latency=255 link=no maxlatency=255 mingnt=255 multicast=yes wireless=IEEE 802.11
       resources: irq:131 ioport:4000(size=256) memory:a4300000-a430ffff

rfkill 列出全部：

0: ideapad_wlan: Wireless LAN
    Soft blocked: no
    Hard blocked: no
1: ideapad_bluetooth: Bluetooth
    Soft blocked: no
    Hard blocked: no
2: phy0: Wireless LAN
    Soft blocked: no
    Hard blocked: no
3: hci0: Bluetooth
    Soft blocked: no
    Hard blocked: no

sudo ifconfig wlp7s0 启动

SIOCSIFFLAGS: Operation already in progress

串行通信

....
07:00.0 Network controller: Realtek Semiconductor Co., Ltd. RTL8822BE 802.11a/b/g/n/ac WiFi adapter (rev ff)
....

系统配置


wlp7s0    IEEE 802.11  ESSID:off/any  
          Mode:Managed  Access Point: Not-Associated   Tx-Power=0 dBm   
          Retry short limit:7   RTS thr:off   Fragment thr:off
          Power Management:on

消息 | grep -i wlp7s0

[    3.550035] rtw_pci 0000:07:00.0: Firmware version 27.2.0, H2C version 13
[    3.841833] rtw_pci 0000:07:00.0 wlp7s0: renamed from wlan0
[    7.784115] rtw_pci 0000:07:00.0: failed to poll offset=0x5 mask=0x2 value=0x0
[    7.784123] rtw_pci 0000:07:00.0: mac power on failed
[    7.784124] rtw_pci 0000:07:00.0: failed to power on mac

答案1

我有同样的问题，但我降级了内核（首先你必须启动到其他内核，使用 Grub 上的“Ubuntu 高级选项”），然后我检查我的 wifi，如果没问题，我就使用降级它 sudo apt-get remove linux-image-VERSION linux-header-VERSION

对我来说很有用：D

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