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Wifi 接口似乎正在自行禁用？

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Wifi 接口似乎正在自行禁用？

今天我启动笔记本电脑时，Wifi 突然无法使用，过去两个小时我一直在尝试让它恢复工作。我想我已经解决了一两个问题，但我并没有真正记录下任何东西。我现在无法解决的问题是：我的 Wifi 界面似乎被禁用了，我无法（总是？？）启用它。但即使我能够启用它，Wifi 仍然无法工作。

这是我的输出lshw -C network：

WARNING: you should run this program as super-user.
  *-network                 
       description: Ethernet interface
       product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
       vendor: Realtek Semiconductor Co., Ltd.
       physical id: 0
       bus info: pci@0000:01:00.0
       logical name: enp1s0
       version: 0c
       serial: 30:65:ec:78:53:5c
       capacity: 1Gbit/s
       width: 64 bits
       clock: 33MHz
       capabilities: bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=r8169 firmware=rtl8168g-2_0.0.1 02/06/13 latency=0 link=no multicast=yes port=MII
       resources: irq:18 ioport:3000(size=256) memory:c1200000-c1200fff memory:c1000000-c1003fff
  *-network DISABLED
       description: Wireless interface
       product: Wireless 7265
       vendor: Intel Corporation
       physical id: 0
       bus info: pci@0000:02:00.0
       logical name: wlp2s0
       version: 48
       serial: 5c:e0:c5:03:6c:ea
       width: 64 bits
       clock: 33MHz
       capabilities: bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=iwlwifi driverversion=5.4.0-88-generic firmware=17.3216344376.0 latency=0 link=no multicast=yes wireless=IEEE 802.11
       resources: irq:48 memory:c1100000-c1101fff
  *-network
       description: Ethernet interface
       physical id: 1
       bus info: usb@1:1.2
       logical name: usb0
       serial: ce:4f:d0:53:fc:10
       capabilities: ethernet physical
       configuration: broadcast=yes driver=rndis_host driverversion=22-Aug-2005 firmware=RNDIS device ip=192.168.231.76 link=yes multicast=yes
WARNING: output may be incomplete or inaccurate, you should run this program as super-user.

输出sudo rfkill list：

0: acer-wireless: Wireless LAN
    Soft blocked: no
    Hard blocked: no
2: hci0: Bluetooth
    Soft blocked: no
    Hard blocked: no
5: phy0: Wireless LAN
    Soft blocked: no
    Hard blocked: no

输出sudo systemctl status wpa_supplicant.service：

● wpa_supplicant.service - WPA supplicant
     Loaded: loaded (/lib/systemd/system/wpa_supplicant.service; enabled; vendor preset: enabled)
     Active: active (running) since Sat 2021-10-02 15:42:54 CEST; 5h 5min ago
   Main PID: 1242 (wpa_supplicant)
      Tasks: 1 (limit: 9378)
     Memory: 3.3M
     CGroup: /system.slice/wpa_supplicant.service
             └─1242 /sbin/wpa_supplicant -u -s -O /run/wpa_supplicant

Okt 02 15:42:54 Lithographie systemd[1]: Starting WPA supplicant...
Okt 02 15:42:54 Lithographie wpa_supplicant[1242]: Successfully initialized wpa_supplicant
Okt 02 15:42:54 Lithographie systemd[1]: Started WPA supplicant.

第一个是我不用的以太网连接。第二个是我的无线连接，今天它奇迹般地停止工作了。第三个是我通过手机实现网络共享连接的解决方法。

modprobe -r iwlwifi一开始并modprobe iwlwifi不能工作，现在能工作了，但并没有真正改变任何东西。此外，当我尝试时，sudo ip link set wlp2s0 up有时它会将界面切换为启用（有时则不会），但 Wifi 仍然无法工作。

我在 Acer Travelmate P236-M-57R4 上运行 Ubuntu 20.04 LTS。提前感谢您的帮助！

编辑：不知道是否有任何联系，但昨天我遇到了一些问题，因为我对chown -r我的主帐户的 /usr/ 文件夹做出了非常不明智的决定。我想我已经解决了这些问题，但也许我没有？

答案1

我认为命令chown是问题所在。使用并sudo apt-get purge wpasupplicant重新安装（从缓存安装）。sudo apt-get install wpasupplicantsudo apt-get install network-manager

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