我在 ThinkPad E470 上全新安装了 ubuntu 16.04，但没有出现 wifi，也没有启用 wifi 的选项。我已经尝试使用 fn 键启用它，但仍然不起作用。
我已经尝试了许多不同的方法，包括尝试更新软件包、检查驱动程序、重新启动网络管理器以及遵循以下解决方案：
不幸的是这些都不起作用 :/
输出lshw -C network如下：
*-network
description: Ethernet interface
product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
vendor: Realtek Semiconductor Co., Ltd.
physical id: 0
bus info: pci@0000:04:00.0
logical name: enp4s0
version: 10
serial: 54:e1:ad:a7:cf:25
size: 1Gbit/s
capacity: 1Gbit/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 1000bt 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=full firmware=rtl8168g-3_0.0.1 04/23/13 ip=192.168.1.88 latency=0 link=yes multicast=yes port=MII speed=1Gbit/s
resources: irq:122 ioport:d000(size=256) memory:f1104000-f1104fff memory:f1100000-f1103fff
*-network UNCLAIMED
description: Network controller
product: Realtek Semiconductor Co., Ltd.
vendor: Realtek Semiconductor Co., Ltd.
physical id: 0
bus info: pci@0000:05:00.0
version: 00
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress cap_list
configuration: latency=0
resources: ioport:c000(size=256) memory:f1000000-f100ffff
输出lspci -nnk | grep -iA3 net：
04:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev 10)
Subsystem: Lenovo RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [17aa:505b]
Kernel driver in use: r8169
Kernel modules: r8169
05:00.0 Network controller [0280]: Realtek Semiconductor Co., Ltd. Device [10ec:c821]
Subsystem: Lenovo Device [17aa:c024]
答案1
所以我终于让它工作了。缺少的是驱动程序 8821ce。
我遵循了在这里找到的答案： https://unix.stackexchange.com/questions/379049/realtek-wifi-driver-problem-in-linux-mint-18-2