我有一台 Tbao Tbook pro 笔记本电脑，上面安装了 Windows10，一切正常。我安装了 Ubuntu 18.04，但 WiFi 不起作用。它让我打开它，然后当我转到“选择网络”时，它卡在“无网络”（我知道有可用的网络）。我将包含一些我尝试过的输出，以防它们有用。
>:~$ sudo lshw -C network
*-network:0
description: Ethernet interface
physical id: 1
logical name: enp0s21f0u4
serial: 86:95:0b:2a:37:a2
capabilities: ethernet physical
configuration: broadcast=yes driver=rndis_host driverversion=22-Aug-2005 firmware=RNDIS device ip=192.168.42.107 link=yes multicast=yes
*-network:1
description: Wireless interface
physical id: 2
bus info: usb@1:7
logical name: wlx54c9dfd91d8b
serial: 54:c9:df:d9:1d:8b
capabilities: ethernet physical wireless
configuration: broadcast=yes driver=rtl8xxxu driverversion=4.15.0-23-generic firmware=N/A ip=192.168.1.173 link=yes multicast=yes wireless=IEEE 802.11
>:~$ lspci -v
00:00.0 Host bridge: Intel Corporation Celeron N3350/Pentium N4200/Atom E3900 Series Host Bridge (rev 0b)
Subsystem: Intel Corporation Celeron N3350/Pentium N4200/Atom E3900 Series Host Bridge
Flags: bus master, fast devsel, latency 0
>00:00.1 Signal processing controller: Intel Corporation Device 5a8c (rev 0b)
Flags: fast devsel, IRQ 24
Memory at 91110000 (64-bit, non-prefetchable) [size=32K]
Capabilities: <access denied>
Kernel driver in use: proc_thermal
Kernel modules: processor_thermal_device
>00:02.0 VGA compatible controller: Intel Corporation Device 5a85 (rev 0b) (prog-if 00 [VGA controller])
Subsystem: Intel Corporation Device 2212
Flags: bus master, fast devsel, latency 0, IRQ 123
Memory at 90000000 (64-bit, non-prefetchable) [size=16M]
Memory at 80000000 (64-bit, prefetchable) [size=256M]
I/O ports at f000 [size=64]
[virtual] Expansion ROM at 000c0000 [disabled] [size=128K]
Capabilities: <access denied>
Kernel driver in use: i915
Kernel modules: i915
>00:0e.0 Audio device: Intel Corporation Celeron N3350/Pentium N4200/Atom E3900 Series Audio Cluster (rev 0b)
Flags: bus master, fast devsel, latency 0, IRQ 124
Memory at 91118000 (64-bit, non-prefetchable) [size=16K]
Memory at 91000000 (64-bit, non-prefetchable) [size=1M]
Capabilities: <access denied>
Kernel driver in use: snd_hda_intel
Kernel modules: snd_hda_intel, snd_soc_skl
>00:0f.0 Communication controller: Intel Corporation Celeron N3350/Pentium N4200/Atom E3900 Series Trusted Execution Engine (rev 0b)
Subsystem: Intel Corporation Celeron N3350/Pentium N4200/Atom E3900 Series Trusted Execution Engine
Flags: bus master, fast devsel, latency 0, IRQ 126
Memory at 91145000 (64-bit, non-prefetchable) [size=4K]
Capabilities: <access denied>
Kernel driver in use: mei_me
Kernel modules: mei_me
>00:12.0 SATA controller: Intel Corporation Celeron N3350/Pentium N4200/Atom E3900 Series SATA AHCI Controller (rev 0b) (prog-if 01 [AHCI 1.0])
Subsystem: Intel Corporation Celeron N3350/Pentium N4200/Atom E3900 Series SATA AHCI Controller
Flags: bus master, 66MHz, medium devsel, latency 0, IRQ 121
Memory at 9111c000 (32-bit, non-prefetchable) [size=8K]
Memory at 91142000 (32-bit, non-prefetchable) [size=256]
I/O ports at f090 [size=8]
I/O ports at f080 [size=4]
I/O ports at f060 [size=32]
Memory at 91141000 (32-bit, non-prefetchable) [size=2K]
Capabilities: <access denied>
Kernel driver in use: ahci
Kernel modules: ahci
>00:15.0 USB controller: Intel Corporation Celeron N3350/Pentium N4200/Atom E3900 Series USB xHCI (rev 0b) (prog-if 30 [XHCI])
Subsystem: Intel Corporation Celeron N3350/Pentium N4200/Atom E3900 Series USB xHCI
Flags: bus master, medium devsel, latency 0, IRQ 120
Memory at 91100000 (64-bit, non-prefetchable) [size=64K]
Capabilities: <access denied>
Kernel driver in use: xhci_hcd
>00:16.0 Signal processing controller: Intel Corporation Celeron N3350/Pentium N4200/Atom E3900 Series I2C Controller #1 (rev 0b)
Subsystem: Intel Corporation Celeron N3350/Pentium N4200/Atom E3900 Series I2C Controller
Flags: bus master, fast devsel, latency 0, IRQ 27
Memory at 91140000 (64-bit, non-prefetchable) [size=4K]
Memory at 9113f000 (64-bit, non-prefetchable) [size=4K]
Capabilities: <access denied>
Kernel driver in use: intel-lpss
Kernel modules: intel_lpss_pci
>00:16.1 Signal processing controller: Intel Corporation Celeron N3350/Pentium N4200/Atom E3900 Series I2C Controller #2 (rev 0b)
Subsystem: Intel Corporation Celeron N3350/Pentium N4200/Atom E3900 Series I2C Controller
Flags: bus master, fast devsel, latency 0, IRQ 28
Memory at 9113e000 (64-bit, non-prefetchable) [size=4K]
Memory at 9113d000 (64-bit, non-prefetchable) [size=4K]
Capabilities: <access denied>
Kernel driver in use: intel-lpss
Kernel modules: intel_lpss_pci
>00:16.2 Signal processing controller: Intel Corporation Celeron N3350/Pentium N4200/Atom E3900 Series I2C Controller #3 (rev 0b)
Subsystem: Intel Corporation Celeron N3350/Pentium N4200/Atom E3900 Series I2C Controller
Flags: bus master, fast devsel, latency 0, IRQ 29
Memory at 9113c000 (64-bit, non-prefetchable) [size=4K]
Memory at 9113b000 (64-bit, non-prefetchable) [size=4K]
Capabilities: <access denied>
Kernel driver in use: intel-lpss
Kernel modules: intel_lpss_pci
>00:16.3 Signal processing controller: Intel Corporation Celeron N3350/Pentium N4200/Atom E3900 Series I2C Controller #4 (rev 0b)
Subsystem: Intel Corporation Celeron N3350/Pentium N4200/Atom E3900 Series I2C Controller
Flags: bus master, fast devsel, latency 0, IRQ 30
Memory at 9113a000 (64-bit, non-prefetchable) [size=4K]
Memory at 91139000 (64-bit, non-prefetchable) [size=4K]
Capabilities: <access denied>
Kernel driver in use: intel-lpss
Kernel modules: intel_lpss_pci
>00:17.0 Signal processing controller: Intel Corporation Celeron N3350/Pentium N4200/Atom E3900 Series I2C Controller #5 (rev 0b)
Subsystem: Intel Corporation Celeron N3350/Pentium N4200/Atom E3900 Series I2C Controller
Flags: bus master, fast devsel, latency 0, IRQ 31
Memory at 91138000 (64-bit, non-prefetchable) [size=4K]
Memory at 91137000 (64-bit, non-prefetchable) [size=4K]
Capabilities: <access denied>
Kernel driver in use: intel-lpss
Kernel modules: intel_lpss_pci
>00:17.1 Signal processing controller: Intel Corporation Celeron N3350/Pentium N4200/Atom E3900 Series I2C Controller #6 (rev 0b)
Subsystem: Intel Corporation Celeron N3350/Pentium N4200/Atom E3900 Series I2C Controller
Flags: bus master, fast devsel, latency 0, IRQ 32
Memory at 91136000 (64-bit, non-prefetchable) [size=4K]
Memory at 91135000 (64-bit, non-prefetchable) [size=4K]
Capabilities: <access denied>
Kernel driver in use: intel-lpss
Kernel modules: intel_lpss_pci
>00:17.2 Signal processing controller: Intel Corporation Celeron N3350/Pentium N4200/Atom E3900 Series I2C Controller #7 (rev 0b)
Subsystem: Intel Corporation Celeron N3350/Pentium N4200/Atom E3900 Series I2C Controller
Flags: bus master, fast devsel, latency 0, IRQ 33
Memory at 91134000 (64-bit, non-prefetchable) [size=4K]
Memory at 91133000 (64-bit, non-prefetchable) [size=4K]
Capabilities: <access denied>
Kernel driver in use: intel-lpss
Kernel modules: intel_lpss_pci
>00:17.3 Signal processing controller: Intel Corporation Celeron N3350/Pentium N4200/Atom E3900 Series I2C Controller #8 (rev 0b)
Subsystem: Intel Corporation Celeron N3350/Pentium N4200/Atom E3900 Series I2C Controller
Flags: bus master, fast devsel, latency 0, IRQ 34
Memory at 91132000 (64-bit, non-prefetchable) [size=4K]
Memory at 91131000 (64-bit, non-prefetchable) [size=4K]
Capabilities: <access denied>
Kernel driver in use: intel-lpss
Kernel modules: intel_lpss_pci
>00:18.0 Signal processing controller: Intel Corporation Celeron N3350/Pentium N4200/Atom E3900 Series HSUART Controller #1 (rev 0b)
Subsystem: Intel Corporation Celeron N3350/Pentium N4200/Atom E3900 Series HSUART Controller
Flags: bus master, fast devsel, latency 0, IRQ 4
Memory at 91130000 (64-bit, non-prefetchable) [size=4K]
Memory at 9112f000 (64-bit, non-prefetchable) [size=4K]
Capabilities: <access denied>
Kernel driver in use: intel-lpss
Kernel modules: intel_lpss_pci
>00:18.1 Signal processing controller: Intel Corporation Celeron N3350/Pentium N4200/Atom E3900 Series HSUART Controller #2 (rev 0b)
Subsystem: Intel Corporation Celeron N3350/Pentium N4200/Atom E3900 Series HSUART Controller
Flags: bus master, fast devsel, latency 0, IRQ 5
Memory at 9112e000 (64-bit, non-prefetchable) [size=4K]
Memory at 9112d000 (64-bit, non-prefetchable) [size=4K]
Capabilities: <access denied>
Kernel driver in use: intel-lpss
Kernel modules: intel_lpss_pci
>00:18.2 Signal processing controller: Intel Corporation Celeron N3350/Pentium N4200/Atom E3900 Series HSUART Controller #3 (rev 0b)
Subsystem: Intel Corporation Celeron N3350/Pentium N4200/Atom E3900 Series HSUART Controller
Flags: fast devsel, IRQ 6
Memory at 91143000 (64-bit, non-prefetchable) [size=4K]
Memory at 91144000 (64-bit, non-prefetchable) [size=4K]
Capabilities: <access denied>
Kernel modules: intel_lpss_pci
>00:18.3 Signal processing controller: Intel Corporation Celeron N3350/Pentium N4200/Atom E3900 Series HSUART Controller #4 (rev 0b)
Subsystem: Intel Corporation Celeron N3350/Pentium N4200/Atom E3900 Series HSUART Controller
Flags: bus master, fast devsel, latency 0, IRQ 7
Memory at 9112c000 (64-bit, non-prefetchable) [size=4K]
Memory at 9112b000 (64-bit, non-prefetchable) [size=4K]
Capabilities: <access denied>
Kernel driver in use: intel-lpss
Kernel modules: intel_lpss_pci
>00:19.0 Signal processing controller: Intel Corporation Celeron N3350/Pentium N4200/Atom E3900 Series SPI Controller #1 (rev 0b)
Subsystem: Intel Corporation Celeron N3350/Pentium N4200/Atom E3900 Series SPI Controller
Flags: bus master, fast devsel, latency 0, IRQ 35
Memory at 9112a000 (64-bit, non-prefetchable) [size=4K]
Memory at 91129000 (64-bit, non-prefetchable) [size=4K]
Capabilities: <access denied>
Kernel driver in use: intel-lpss
Kernel modules: intel_lpss_pci
>00:19.1 Signal processing controller: Intel Corporation Celeron N3350/Pentium N4200/Atom E3900 Series SPI Controller #2 (rev 0b)
Subsystem: Intel Corporation Celeron N3350/Pentium N4200/Atom E3900 Series SPI Controller
Flags: bus master, fast devsel, latency 0, IRQ 36
Memory at 91128000 (64-bit, non-prefetchable) [size=4K]
Memory at 91127000 (64-bit, non-prefetchable) [size=4K]
Capabilities: <access denied>
Kernel driver in use: intel-lpss
Kernel modules: intel_lpss_pci
>00:19.2 Signal processing controller: Intel Corporation Celeron N3350/Pentium N4200/Atom E3900 Series SPI Controller #3 (rev 0b)
Subsystem: Intel Corporation Celeron N3350/Pentium N4200/Atom E3900 Series SPI Controller
Flags: bus master, fast devsel, latency 0, IRQ 37
Memory at 91126000 (64-bit, non-prefetchable) [size=4K]
Memory at 91125000 (64-bit, non-prefetchable) [size=4K]
Capabilities: <access denied>
Kernel driver in use: intel-lpss
Kernel modules: intel_lpss_pci
>00:1b.0 SD Host controller: Intel Corporation Celeron N3350/Pentium N4200/Atom E3900 Series SDXC/MMC Host Controller (rev 0b) (prog-if 01)
Subsystem: Intel Corporation Celeron N3350/Pentium N4200/Atom E3900 Series SDXC/MMC Host Controller
Flags: bus master, fast devsel, latency 0, IRQ 3
Memory at 91124000 (64-bit, non-prefetchable) [size=4K]
Memory at 91123000 (64-bit, non-prefetchable) [size=4K]
Capabilities: <access denied>
Kernel driver in use: sdhci-pci
Kernel modules: sdhci_pci
>00:1c.0 SD Host controller: Intel Corporation Celeron N3350/Pentium N4200/Atom E3900 Series eMMC Controller (rev 0b) (prog-if 01)
Subsystem: Intel Corporation Celeron N3350/Pentium N4200/Atom E3900 Series eMMC Controller
Flags: bus master, fast devsel, latency 0, IRQ 39
Memory at 91122000 (64-bit, non-prefetchable) [size=4K]
Memory at 91121000 (64-bit, non-prefetchable) [size=4K]
Capabilities: <access denied>
Kernel driver in use: sdhci-pci
Kernel modules: sdhci_pci
>00:1e.0 SD Host controller: Intel Corporation Celeron N3350/Pentium N4200/Atom E3900 Series SDIO Controller (rev 0b) (prog-if 01)
Subsystem: Intel Corporation Celeron N3350/Pentium N4200/Atom E3900 Series SDIO Controller
Flags: bus master, fast devsel, latency 0, IRQ 42
Memory at 91120000 (64-bit, non-prefetchable) [size=4K]
Memory at 9111f000 (64-bit, non-prefetchable) [size=4K]
Capabilities: <access denied>
Kernel driver in use: sdhci-pci
Kernel modules: sdhci_pci
>00:1f.0 ISA bridge: Intel Corporation Celeron N3350/Pentium N4200/Atom E3900 Series Low Pin Count Interface (rev 0b)
Subsystem: Intel Corporation Celeron N3350/Pentium N4200/Atom E3900 Series Low Pin Count Interface
Flags: bus master, medium devsel, latency 0
Kernel driver in use: lpc_ich
Kernel modules: lpc_ich
00:1f.1 SMBus: Intel Corporation Celeron N3350/Pentium N4200/Atom E3900 Series SMBus Controller (rev 0b)
Subsystem: Intel Corporation Celeron N3350/Pentium N4200/Atom E3900 Series SMBus Controller
Flags: medium devsel, IRQ 255
Memory at 9111e000 (64-bit, non-prefetchable) [size=256]
I/O ports at f040 [size=32]
Kernel modules: i2c_i801`
答案1
我的 HP Stream 笔记本电脑上的 RTL8xxxxx 卡也出现了类似的问题……只有当我离路由器很近（距离不到 6 英尺）时它才会工作。
我按照这里的说明进行操作https://askubuntu.com/a/722904/677112并且它修复了它。
sudo modprobe -rv rtl8723be
sudo modprobe -v rtl8723be ant_sel=2
echo "options rtl8723be ant_sel=2" | sudo tee /etc/modprobe.d/rtlbtcoex.conf
（将 rtl8723be 替换为您的确切驱动程序名称，您可以通过输入以下内容找到它：lsmod | grep rtl）