无线接口刚刚消失

无线接口刚刚消失

突然间,我的笔记本电脑上的 Wi-Fi 停止工作了,华硕 UX433FA。Ubuntu 不再识别该 wifi 适配器,我在网络管理器中看不到它。

输出sudo lshw -C network

*-network                 
       description: Network controller
       product: Intel Corporation
       vendor: Intel Corporation
       physical id: 14.3
       bus info: pci@0000:00:14.3
       version: 30
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress msix bus_master cap_list
       configuration: driver=iwlwifi latency=0
       resources: irq:16 memory:b121c000-b121ffff
  *-network
       description: Ethernet interface
       physical id: 1
       logical name: enp0s20f0u2
       serial: 3e:f8:7b:1f:3c:05
       capabilities: ethernet physical
       configuration: broadcast=yes driver=rndis_host driverversion=22-Aug-2005 firmware=RNDIS device ip=192.168.42.48 link=yes multicast=yes

没有了Wifi interface

ifconfig显示:

enp0s20f0u2: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.42.48  netmask 255.255.255.0  broadcast 192.168.42.255
        inet6 fe80::f7e2:9b19:30ff:2b48  prefixlen 64  scopeid 0x20<link>
        ether 3e:f8:7b:1f:3c:05  txqueuelen 1000  (Ethernet)
        RX packets 20655  bytes 21508840 (21.5 MB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 14725  bytes 2205670 (2.2 MB)
        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 4190  bytes 916540 (916.5 KB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 4190  bytes 916540 (916.5 KB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

我的手机通过 USB 热点提供互联网接入,但这里也没有提到 Wifi。我已执行强制多次重启,一切都已更新。

注意:笔记本电脑有双启动的 Windows,而 Windows 也不再看到我的 wifi 卡。

我的 wifi 卡是不是烧坏了?

编辑:这是输出sudo modprobe iwlwifi && dmesg | grep -e iwl -e 14.3

[    0.014855] ACPI: DSDT 0x0000000099C6B228 0414D3 (v02 _ASUS_ Notebook 01072009 INTL 20160527)
[    0.127801] Memory: 16067824K/16587220K available (14339K kernel code, 2335K rwdata, 4316K rodata, 2584K init, 5196K bss, 519396K reserved, 0K cma-reserved)
[    0.142353] NR_IRQS: 524544, nr_irqs: 2048, preallocated irqs: 16
[    0.143300] DMAR: RMRR base: 0x00000099f58000 end: 0x0000009a1a1fff
[    0.143301] DMAR: RMRR base: 0x0000009b800000 end: 0x0000009fffffff
[    0.143302] DMAR-IR: IOAPIC id 2 under DRHD base  0xfed91000 IOMMU 1
[    0.143302] DMAR-IR: HPET id 0 under DRHD base 0xfed91000
[    0.143303] DMAR-IR: Queued invalidation will be enabled to support x2apic and Intr-remapping.
[    0.299218] pci 0000:00:14.3: [8086:9df0] type 00 class 0x028000
[    0.299241] pci 0000:00:14.3: reg 0x10: [mem 0xb121c000-0xb121ffff 64bit]
[    0.299334] pci 0000:00:14.3: PME# supported from D0 D3hot D3cold
[    0.331463] PCI: Using ACPI for IRQ routing
[    1.690595] iwlwifi 0000:00:14.3: enabling device (0000 -> 0002)
[    1.727673] iwlwifi 0000:00:14.3: loaded firmware version 43.95eb4e97.0 op_mode iwlmvm
[    1.768088] iwlwifi 0000:00:14.3: Detected Intel(R) Dual Band Wireless AC 9460, REV=0x318
[    1.778373] iwlwifi 0000:00:14.3: Microcode SW error detected. Restarting 0x0.
[    1.778379] iwlwifi 0000:00:14.3: Not valid error log pointer 0x00000000 for Init uCode
[    1.778405] iwlwifi 0000:00:14.3: SecBoot CPU1 Status: 0x23, CPU2 Status: 0x0
[    1.778409] iwlwifi 0000:00:14.3: Failed to start INIT ucode: -5
[    1.778412] iwlwifi 0000:00:14.3: Collecting data: trigger 15 fired.
[    2.001362] iwlwifi 0000:00:14.3: Failed to run INIT ucode: -5

哇:看来 wifi 卡仍然能找到,但有一个Microcode SW error detected!有什么线索可以解决此问题吗?

编辑2:我的笔记本电脑型号受到微代码更新的影响,导致其无法在 Ubuntu 18.04 上启动。请参阅此帖子: Ubuntu 18.04.2 更新后启动卡在紫屏上 不过,两天前这个话题有更新。现在我似乎可以正常启动 Ubuntu,而不需要dis_ucode_ldr手动添加 GRUB 中的选项才能重新启动。请继续关注这是否有帮助。

编辑3:我可以应用新的 BIOS 更新,删除 grub 中停用 CPU 微码的行,并将微码更新为最新版本。但是,这并不能解决问题。实际上,我现在登录后无法通过 USB 连接到互联网。

答案1

通过运行sudo modprobe iwlwifi && dmesg | grep -e iwl -e 14.3,我注意到内部无线网卡的微代码存在问题。这个问题不容易修复,必须更换硬件。

使用外部 WiFi 适配器可以作为临时替代方案。

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