安装Ubuntu 18.04后WiFi无法正常工作
我有一个笔记本汉字田村二重奏，我有Windows10一切正常工作。 昨天我安装了Ubuntu 18.04，WiFi无法正常工作。 它让我打开它，然后当我去“选择网络”时卡在“没有网络”（我知道有可用的网络）。 我一直在网上看，但我找不到修复。 我将包括一些我尝试过的输出，以防它们有用。 我已经回到了Win10，因为还有其他人遇到同样的问题，所以我会打开它。
edelmiro@Distrito8:~$ sudo lshw -C network [sudo] password for edelmiro: *-network:0 description: Ethernet interface physical id: 1 logical name: enp0s21f0u2 serial: ea:a7:73:e1:fb:65 capabilities: ethernet physical configuration: broadcast=yes driver=rndis_host driverversion=22-Aug-2005 firmware=RNDIS device ip=192.168.42.43 link=yes multicast=yes *-network:1 description: Wireless interface physical id: 2 bus info: usb@1:7 logical name: wlx54c9dfb805ef serial: 54:c9:df:b8:05:ef capabilities: ethernet physical wireless configuration: broadcast=yes driver=rtl8xxxu driverversion=4.15.0-20-generic firmware=N/A link=no multicast=yes wireless=IEEE 802.11 edelmiro@Distrito8:~$ 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: bus master, fast devsel, latency 0, IRQ 24 Memory at 91110000 (64-bit, non-prefetchable) [size=32K] Capabilities: 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: 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) Subsystem: Device 1c6c:122a Flags: bus master, fast devsel, latency 0, IRQ 25 Memory at 91118000 (64-bit, non-prefetchable) [size=16K] Memory at 91000000 (64-bit, non-prefetchable) [size=1M] Capabilities: 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 124 Memory at 91145000 (64-bit, non-prefetchable) [size=4K] Capabilities: 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: 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: 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: 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: 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: 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: 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: 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: 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: 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: 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: 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: 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: 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: 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: 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: 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: 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: 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: 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: 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 尝试拔掉外部设备，尤其是任何外接显示器，然后重新启动计算机。 这解决了我的问题。