我几乎尝试了所有方法来让我的 WiFi 正常工作。它只是自动断开连接，除非重新启动，否则永远不会连接。甚至sudo service network-manager restart不起作用。此外，我的安全启动被禁用，在附加驱动程序中，我只能看到一个未知司机。
当我输入时，我得到的结果如下sudo lshw -class network：
*-network
description: Ethernet interface
product: RTL8101/2/6E PCI Express Fast/Gigabit Ethernet controller
vendor: Realtek Semiconductor Co., Ltd.
physical id: 0
bus info: pci@0000:07:00.0
logical name: enp7s0
version: 07
serial: ec:8e:b5:fb:16:23
size: 10Mbit/s
capacity: 100Mbit/s
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=half firmware=rtl8106e-1_0.0.1 06/29/12 latency=0 link=no multicast=yes port=MII speed=10Mbit/s
resources: irq:43 ioport:5000(size=256) memory:d6000000-d6000fff memory:d6100000-d6103fff
*-generic
description: Wireless interface
product: Illegal Vendor ID
vendor: Illegal Vendor ID
physical id: 0
bus info: pci@0000:13:00.0
logical name: wlp19s0
version: ff
serial: 54:8c:a0:99:3c:c5
width: 32 bits
clock: 66MHz
capabilities: bus_master vga_palette cap_list ethernet physical wireless
configuration: broadcast=yes driver=rtl8723be driverversion=4.10.0-36-generic firmware=N/A latency=255 link=no maxlatency=255 mingnt=255 multicast=yes wireless=IEEE 802.11
resources: irq:16 ioport:3000(size=256) memory:d3000000-d3003fff
*-network
description: Ethernet interface
physical id: 2
logical name: enp0s20u1
serial: b6:c8:24:47:35:e0
capabilities: ethernet physical
configuration: broadcast=yes driver=rndis_host driverversion=22-Aug-2005 firmware=RNDIS device ip=192.168.42.93 link=yes multicast=yes
代码：lspci -knn | grep Net -A3; rfkill list：
13:00.0 Network controller [0280]: Realtek Semiconductor Co., Ltd. RTL8723BE PCIe Wireless Network Adapter [10ec:b723]
Subsystem: Hewlett-Packard Company RTL8723BE PCIe Wireless Network Adapter [103c:81c1]
Kernel driver in use: rtl8723be
Kernel modules: rtl8723be
0: hci0: Bluetooth
Soft blocked: yes
Hard blocked: no
1: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
输出dkms status：
bcmwl, 6.30.223.271+bdcom, 4.10.0-36-generic, x86_64: installed
为什么我会得到非法供应商 ID？我该如何解决这个问题？