在 Ubuntu 18.04（4.15.0-142-generic）上进行最后一次更新后，我的 wifi 无法找到任何网络。 wifi 找不到图片
当我运行时，sudo lshw -C network我得到以下信息：
*-generic DISABLED
description: Wireless interface
product: Illegal Vendor ID
vendor: Illegal Vendor ID
physical id: 0
bus info: pci@0000:07:00.0
logical name: wlp7s0
version: ff
serial: 28:3a:4d:7d:30:15
width: 32 bits
clock: 66MHz
capabilities: bus_master vga_palette cap_list ethernet physical wireless
configuration: broadcast=yes driver=r8822be driverversion=4.15.0-142-generic firmware=N/A latency=255 link=no maxlatency=255 mingnt=255 multicast=yes wireless=IEEE 802.11
resources: irq:144 ioport:4000(size=256) memory:a4300000-a430ffff
*-network
description: Ethernet interface
product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
vendor: Realtek Semiconductor Co., Ltd.
physical id: 0
bus info: pci@0000:08:00.0
logical name: enp8s0
version: 15
serial: e8:6a:64:7e:19:c4
size: 10Mbit/s
capacity: 1Gbit/s
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress msix bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=half firmware=rtl8168h-2_0.0.2 02/26/15 latency=0 link=no multicast=yes port=MII speed=10Mbit/s
resources: irq:17 ioport:3000(size=256) memory:a4204000-a4204fff memory:a4200000-a4203fff
*-network
description: Ethernet interface
physical id: 3
logical name: enp0s20f0u2
serial: 02:61:1f:5b:f1:72
capabilities: ethernet physical
configuration: broadcast=yes driver=rndis_host driverversion=22-Aug-2005 firmware=RNDIS device ip=192.168.200.64 link=yes multicast=yes
和ifconfig：
enp0s20f0u2: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.200.64 netmask 255.255.255.0 broadcast 192.168.200.255
inet6 fe80::6045:696e:c17d:8342 prefixlen 64 scopeid 0x20<link>
ether 02:61:1f:5b:f1:72 txqueuelen 1000 (Ethernet)
RX packets 13878 bytes 12536453 (12.5 MB)
RX errors 8 dropped 0 overruns 0 frame 8
TX packets 8995 bytes 2533335 (2.5 MB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
enp8s0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
ether e8:6a:64:7e:19:c4 txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1000 (Local Loopback)
RX packets 622 bytes 55833 (55.8 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 622 bytes 55833 (55.8 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
如果我尝试sudo ifconfig wlp7s0 up我得到SIOCSIFFLAGS: Operation not permitted
dmesg：
[ 43.536416] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[ 43.536417] Bluetooth: BNEP filters: protocol multicast
[ 43.536418] Bluetooth: BNEP socket layer initialized
[ 46.696451] IPv6: ADDRCONF(NETDEV_UP): enp0s20f0u2: link is not ready
[ 46.703136] IPv6: ADDRCONF(NETDEV_UP): enp8s0: link is not ready
[ 46.774164] r8169 0000:08:00.0 enp8s0: link down
[ 46.774317] IPv6: ADDRCONF(NETDEV_UP): enp8s0: link is not ready
[ 46.802975] IPv6: ADDRCONF(NETDEV_UP): wlp7s0: link is not ready
[ 46.827476] r8822be: halmac_init_hal failed
[ 46.951349] r8822be: halmac_init_hal failed
[ 46.952202] r8822be: halmac_init_hal failed
[ 49.495101] ACPI Warning: \_SB.PCI0.PEG0.PEGP._DSM: Argument #4 type mismatch - Found
[Buffer], ACPI requires [Package] (20170831/nsarguments-100)
[ 57.008614] r8822be: halmac_init_hal failed
[ 57.009144] r8822be: halmac_init_hal failed
[ 67.013206] r8822be: halmac_init_hal failed
[ 67.013534] r8822be: halmac_init_hal failed
[ 77.057025] r8822be: halmac_init_hal failed
[ 77.057611] r8822be: halmac_init_hal failed
[ 80.383128] Bluetooth: RFCOMM TTY layer initialized
[ 80.383131] Bluetooth: RFCOMM socket layer initialized
[ 80.383133] Bluetooth: RFCOMM ver 1.11
[ 83.289169] rfkill: input handler disabled
[ 83.411293] acpi INT3400:00: Unsupported event [0x88]
[ 84.429167] acpi INT3400:00: Unsupported event [0x88]
[ 87.084368] r8822be: halmac_init_hal failed
[ 87.085163] r8822be: halmac_init_hal failed
[ 97.097929] r8822be: halmac_init_hal failed
[ 97.098484] r8822be: halmac_init_hal failed
[ 218.697420] acpi INT3400:00: Unsupported event [0x86]
[ 352.725607] usb 1-3: USB disconnect, device number 3
[ 446.861695] CPU8: Core temperature above threshold, cpu clock throttled (total events = 3)
[ 446.861696] CPU4: Package temperature above threshold, cpu clock throttled (total events = 4)
[ 446.861697] CPU0: Package temperature above threshold, cpu clock throttled (total events = 4)
[ 446.861697] CPU2: Core temperature above threshold, cpu clock throttled (total events = 3)
[ 446.861698] CPU1: Package temperature above threshold, cpu clock throttled (total events = 4)
[ 446.861699] CPU7: Package temperature above threshold, cpu clock throttled (total events = 4)
[ 446.861700] CPU6: Package temperature above threshold, cpu clock throttled (total events = 4)
[ 446.861701] CPU10: Package temperature above threshold, cpu clock throttled (total events = 4)
[ 446.861701] CPU2: Package temperature above threshold, cpu clock throttled (total events = 4)
[ 446.861702] CPU8: Package temperature above threshold, cpu clock throttled (total events = 4)
[ 446.861737] CPU3: Package temperature above threshold, cpu clock throttled (total events = 4)
[ 446.861737] CPU9: Package temperature above threshold, cpu clock throttled (total events = 4)
[ 446.861738] CPU11: Package temperature above threshold, cpu clock throttled (total events = 4)
[ 446.861739] CPU5: Package temperature above threshold, cpu clock throttled (total events = 4)
[ 446.862763] CPU8: Core temperature/speed normal
[ 446.862764] CPU8: Package temperature/speed normal
[ 446.862765] CPU0: Package temperature/speed normal
[ 446.862765] CPU2: Core temperature/speed normal
[ 446.862766] CPU4: Package temperature/speed normal
[ 446.862767] CPU10: Package temperature/speed normal
[ 446.862767] CPU6: Package temperature/speed normal
[ 446.862767] CPU2: Package temperature/speed normal
[ 446.862825] CPU1: Package temperature/speed normal
[ 446.862826] CPU7: Package temperature/speed normal
[ 446.862826] CPU9: Package temperature/speed normal
[ 446.862827] CPU3: Package temperature/speed normal
[ 446.862828] CPU11: Package temperature/speed normal
[ 446.862828] CPU5: Package temperature/speed normal
[ 2826.974988] r8822be: halmac_init_hal failed
[ 2848.005392] r8822be: halmac_init_hal failed
我自己找不到解决办法，很乐意接受任何帮助，谢谢
编辑：
rfkill list all：
0: ideapad_wlan: Wireless LAN
Soft blocked: no
Hard blocked: no
1: ideapad_bluetooth: Bluetooth
Soft blocked: no
Hard blocked: no
2: hci0: Bluetooth
Soft blocked: no
Hard blocked: no
3: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
答案1
实际上，我只需加载 Windows，然后再次加载 ubuntu（我有双启动）就可以解决这个问题，正如有人提到的那样……非常奇怪，但它可以工作……还添加了 rfkill 列表，dmesg 显示 r8822be 驱动程序现在一切正常