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在 Ubuntu 12.10 中安装更新后 WiFi 选项消失

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在 Ubuntu 12.10 中安装更新后 WiFi 选项消失

今天早上我安装了一些 Ubuntu 12.10 的更新，但我的 WiFi 消失了。

这是的输出rfkill list all：

0: hci0: Bluetooth
    Soft blocked: yes
    Hard blocked: no

您可以看到甚至没有无线选项。我还尝试了：

sudo lshw -c network

  *-network NO RECLAMADO  
       descripción: Network controller
       producto: Realtek Semiconductor Co., Ltd.
       fabricante: Realtek Semiconductor Co., Ltd.
       id físico: 0
       información del bus: pci@0000:02:00.0
       versión: 00
       anchura: 64 bits
       reloj: 33MHz
       capacidades: pm msi pciexpress bus_master cap_list
       configuración: latency=0
       recursos: ioport:e000(size=256) memoria:f7d00000-f7d03fff
  *-network
       descripción: Ethernet interface
       producto: RTL8101E/RTL8102E PCI Express Fast Ethernet controller
       fabricante: Realtek Semiconductor Co., Ltd.
       id físico: 0.2
       información del bus: pci@0000:03:00.2
       nombre lógico: eth0
       versión: 06
       serie: 00:90:f5:e2:f7:05
       tamaño: 100Mbit/s
       capacidad: 100Mbit/s
       anchura: 64 bits
       reloj: 33MHz
       capacidades: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd autonegotiation
       configuración: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=full firmware=rtl8402-1_0.0.1 10/26/11 ip=192.168.1.38 latency=0 link=yes multicast=yes port=MII speed=100Mbit/s
       recursos: irq:41 ioport:d000(size=256) memoria:f0004000-f0004fff memoria:f0000000-f0003fff

该笔记本电脑是 Airis Praxis N1204 32 位。

任何帮助都将不胜感激，因为我从上午 9 点开始就一直在尝试修复它。感谢迄今为止的回复。我尝试了下面建议的两种解决方案，但不幸的是问题仍然存在。

这是的输出lspci：

00:00.0 Host bridge: Intel Corporation 3rd Gen Core processor DRAM Controller (rev 09)
00:02.0 VGA compatible controller: Intel Corporation 3rd Gen Core processor Graphics Controller (rev 09)
00:16.0 Communication controller: Intel Corporation 7 Series/C210 Series Chipset Family MEI Controller #1 (rev 04)
00:1a.0 USB controller: Intel Corporation 7 Series/C210 Series Chipset Family USB Enhanced Host Controller #2 (rev 04)
00:1b.0 Audio device: Intel Corporation 7 Series/C210 Series Chipset Family High Definition Audio Controller (rev 04)
00:1c.0 PCI bridge: Intel Corporation 7 Series/C210 Series Chipset Family PCI Express Root Port 1 (rev c4)
00:1c.2 PCI bridge: Intel Corporation 7 Series/C210 Series Chipset Family PCI Express Root Port 3 (rev c4)
00:1c.3 PCI bridge: Intel Corporation 7 Series/C210 Series Chipset Family PCI Express Root Port 4 (rev c4)
00:1d.0 USB controller: Intel Corporation 7 Series/C210 Series Chipset Family USB Enhanced Host Controller #1 (rev 04)
00:1f.0 ISA bridge: Intel Corporation 7 Series Chipset Family LPC Controller (rev 04)
00:1f.2 SATA controller: Intel Corporation 7 Series Chipset Family 6-port SATA Controller [AHCI mode] (rev 04)
00:1f.3 SMBus: Intel Corporation 7 Series/C210 Series Chipset Family SMBus Controller (rev 04)
02:00.0 Network controller: Realtek Semiconductor Co., Ltd. Device 8723
03:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. Device 5286 (rev 01)
03:00.2 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8101E/RTL8102E PCI Express Fast Ethernet controller (rev 06)

答案1

我的笔记本电脑也遇到了同样的问题。我运行了这些命令，然后它就起作用了：

sudo apt-get install linux-headers-generic
sudo apt-get install --reinstall bcmwl-kernel-source
sudo modprobe wl

答案2

尝试以下命令：

sudo apt-get remove --purge bcmwl-kernel-source
sudo apt-get install linux-firmware-nonfree

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