大家好，我真的是这个 Ubuntu 的新手。我现在在同一台 PC 上运行最新的 Ubuntu 和 windows。无线连接在 Windows 上工作正常，但在 Ubuntu 上连接和断开连接。
我在使用无线路由器（贝尔金和贝尔金无线网络适配器）的 ADSL。
russell@ubuntu:~$ dmesg | grep rt
[ 0.000000] KERNEL supported cpus:
[ 0.000000] Movable zone start PFN for each node
[ 0.000000] ACPI: PM-Timer IO Port: 0x408
[ 0.000000] Allocating PCI resources starting at 80000000 (gap: 80000000:50000000)
[ 0.000000] Booting paravirtualized kernel on bare hardware
[ 0.000000] Enabling unmasked SIMD FPU exception support... done.
[ 0.000000] virtual kernel memory layout:
[ 0.004287] mce: CPU supports 4 MCE banks
[ 0.035629] ftrace: converting mcount calls to 0f 1f 44 00 00
[ 0.185268] ACPI: (supports S0 S1 S4 S5)
[ 0.193969] pci 0000:00:1c.0: PME# supported from D0 D3hot D3cold
[ 0.194048] pci 0000:00:1d.0: reg 20 io port: [0xbc00-0xbc1f]
[ 0.194117] pci 0000:00:1d.1: reg 20 io port: [0xb000-0xb01f]
[ 0.194189] pci 0000:00:1d.2: reg 20 io port: [0xb400-0xb41f]
[ 0.194257] pci 0000:00:1d.3: reg 20 io port: [0xb800-0xb81f]
[ 0.194485] pci 0000:00:1e.2: reg 10 io port: [0xc000-0xc0ff]
[ 0.194495] pci 0000:00:1e.2: reg 14 io port: [0xc400-0xc43f]
[ 0.194554] pci 0000:00:1e.2: PME# supported from D0 D3hot D3cold
[ 0.193969] pci 0000:00:1c.0: PME# supported from D0 D3hot D3cold
[ 0.194048] pci 0000:00:1d.0: reg 20 io port: [0xbc00-0xbc1f]
[ 0.194117] pci 0000:00:1d.1: reg 20 io port: [0xb000-0xb01f]
[ 0.194189] pci 0000:00:1d.2: reg 20 io port: [0xb400-0xb41f]
[ 0.194257] pci 0000:00:1d.3: reg 20 io port: [0xb800-0xb81f]
[ 0.194485] pci 0000:00:1e.2: reg 10 io port: [0xc000-0xc0ff]
[ 0.194495] pci 0000:00:1e.2: reg 14 io port: [0xc400-0xc43f]
[ 0.194554] pci 0000:00:1e.2: PME# supported from D0 D3hot D3cold
[ 0.194714] pci 0000:00:1f.1: reg 10 io port: [0x00-0x07]
[ 0.194724] pci 0000:00:1f.1: reg 14 io port: [0x00-0x03]
[ 0.194735] pci 0000:00:1f.1: reg 18 io port: [0x00-0x07]
[ 0.194746] pci 0000:00:1f.1: reg 1c io port: [0x00-0x03]
[ 0.194759] pci 0000:00:1f.1: reg 20 io port: [0xf000-0xf00f]
[ 0.194819] pci 0000:00:1f.2: reg 10 io port: [0xd000-0xd007]
[ 0.194829] pci 0000:00:1f.2: reg 14 io port: [0xd400-0xd403]
[ 0.194714] pci 0000:00:1f.1: reg 10 io port: [0x00-0x07]
[ 0.194724] pci 0000:00:1f.1: reg 14 io port: [0x00-0x03]
[ 0.194735] pci 0000:00:1f.1: reg 18 io port: [0x00-0x07]
[ 0.194746] pci 0000:00:1f.1: reg 1c io port: [0x00-0x03]
[ 0.194759] pci 0000:00:1f.1: reg 20 io port: [0xf000-0xf00f]
[ 0.194819] pci 0000:00:1f.2: reg 10 io port: [0xd000-0xd007]
[ 0.194829] pci 0000:00:1f.2: reg 14 io port: [0xd400-0xd403]
[ 0.194839] pci 0000:00:1f.2: reg 18 io port: [0xd800-0xd807]
[ 0.194848] pci 0000:00:1f.2: reg 1c io port: [0xdc00-0xdc03]
[ 0.194858] pci 0000:00:1f.2: reg 20 io port: [0xe000-0xe00f]
[ 0.194892] pci 0000:00:1f.2: PME# supported from D3hot
[ 0.194957] pci 0000:00:1f.3: reg 20 io port: [0x500-0x51f]
[ 0.195097] pci 0000:01:00.0: reg 24 io port: [0x9000-0x907f]
[ 0.195212] pci 0000:00:1c.0: bridge io port: [0x9000-0x9fff]
[ 0.195287] pci 0000:02:05.0: reg 10 io port: [0xa000-0xa0ff]
[ 0.195360] pci 0000:02:05.0: supports D1 D2
[ 0.194839] pci 0000:00:1f.2: reg 18 io port: [0xd800-0xd807]
[ 0.194848] pci 0000:00:1f.2: reg 1c io port: [0xdc00-0xdc03]
[ 0.194858] pci 0000:00:1f.2: reg 20 io port: [0xe000-0xe00f]
[ 0.194892] pci 0000:00:1f.2: PME# supported from D3hot
[ 0.194957] pci 0000:00:1f.3: reg 20 io port: [0x500-0x51f]
[ 0.195097] pci 0000:01:00.0: reg 24 io port: [0x9000-0x907f]
[ 0.195212] pci 0000:00:1c.0: bridge io port: [0x9000-0x9fff]
[ 0.195287] pci 0000:02:05.0: reg 10 io port: [0xa000-0xa0ff]
[ 0.195360] pci 0000:02:05.0: supports D1 D2
[ 0.195367] pci 0000:02:05.0: PME# supported from D1 D2 D3hot D3cold
[ 0.195437] pci 0000:00:1e.0: bridge io port: [0xa000-0xafff]
[ 0.224801] system 00:01: ioport range 0x4d0-0x4d1 has been reserved
[ 0.224807] system 00:01: ioport range 0x290-0x29f has been reserved
[ 0.224813] system 00:01: ioport range 0x800-0x87f has been reserved
[ 0.224819] system 00:01: ioport range 0x880-0x88f has been reserved
[ 0.224836] system 00:0b: ioport range 0x400-0x4bf could not be reserved
[ 0.279897] pcieport 0000:00:1c.0: irq 24 for MSI/MSI-X – Raven Aug 27 at 0:42 edit
[ 0.195367] pci 0000:02:05.0: PME# supported from D1 D2 D3hot D3cold
[ 0.195437] pci 0000:00:1e.0: bridge io port: [0xa000-0xafff]
[ 0.224801] system 00:01: ioport range 0x4d0-0x4d1 has been reserved
[ 0.224807] system 00:01: ioport range 0x290-0x29f has been reserved
[ 0.224813] system 00:01: ioport range 0x800-0x87f has been reserved
[ 0.224819] system 00:01: ioport range 0x880-0x88f has been reserved
[ 0.224836] system 00:0b: ioport range 0x400-0x4bf could not be reserved
[ 0.279897] pcieport 0000:00:1c.0: irq 24 for MSI/MSI-X
[ 0.279910] pcieport 0000:00:1c.0: setting latency timer to 64
[ 0.287215] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled
[ 0.291459] input: Macintosh mouse button emulation as /devices/virtual/input/input2
[ 0.299338] ehci_hcd 0000:00:1d.7: cache line size of 128 is not supported
[ 0.346769] ehci_hcd 0000:00:1d.7: USB 2.0 started, EHCI 1.00
[ 0.347042] hub 1-0:1.0: 8 ports detected [ 0.347617] hub 2-0:1.0: 2 ports detected
[ 0.348036] hub 3-0:1.0: 2 ports detected [ 0.348459] hub 4-0:1.0: 2 ports detected
[ 0.348891] hub 5-0:1.0: 2 ports detecte – Raven Aug 27 at 0:43 edit
[ 0.279910] pcieport 0000:00:1c.0: setting latency timer to 64
[ 0.287215] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled
[ 0.291459] input: Macintosh mouse button emulation as /devices/virtual/input/input2
[ 0.299338] ehci_hcd 0000:00:1d.7: cache line size of 128 is not supported
[ 0.346769] ehci_hcd 0000:00:1d.7: USB 2.0 started, EHCI 1.00
[ 0.347042] hub 1-0:1.0: 8 ports detected
[ 0.347617] hub 2-0:1.0: 2 ports detected
[ 0.348036] hub 3-0:1.0: 2 ports detected
[ 0.348459] hub 4-0:1.0: 2 ports detected
[ 0.348891] hub 5-0:1.0: 2 ports detected
[ 0.349073] PNP: PS/2 appears to have AUX port disabled, if this is incorrect please boot with i8042.nopnp
[ 0.349998] serio: i8042 KBD port at 0x60,0x64 irq 1
[ 0.350404] rtc_cmos 00:03: RTC can wake from S4 [ 0.350475] rtc_cmos 00:03: rtc core: registered rtc_cmos as rtc0
[ 0.350506] rtc0: alarms up to one month, 242 bytes nvram, hpet irqs – Raven Aug 27 at 0:43 edit
[ 0.349073] PNP: PS/2 appears to have AUX port disabled, if this is incorrect please boot with i8042.nopnp
[ 0.349998] serio: i8042 KBD port at 0x60,0x64 irq 1 [ 0.350404] rtc_cmos 00:03: RTC can wake from S4
[ 0.350475] rtc_cmos 00:03: rtc core: registered rtc_cmos as rtc0
[ 0.350506] rtc0: alarms up to one month, 242 bytes nvram, hpet irqs
[ 0.355364] Using IPI No-Shortcut mode
[ 0.356078] rtc_cmos 00:03: setting system clock to 2010-08-27 10:13:42 UTC (1282904022) [ 0.763804] sd 3:0:0:0: [sdb] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
[ 0.763811] sd 2:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
[ 0.826587] udev: starting version 151
[ 0.860561] hub 1-1:1.0: 4 ports detected
[ 1.116873] USB Mass Storage support registered.
[ 2.734937] hub 3-2:1.0: 4 ports detected
[ 13.477205] udev: starting version 151 – Raven Aug 27 at 0:43 edit
[ 0.355364] Using IPI No-Shortcut mode
[ 0.356078] rtc_cmos 00:03: setting system clock to 2010-08-27 10:13:42 UTC (1282904022)
[ 0.763804] sd 3:0:0:0: [sdb] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
[ 0.763811] sd 2:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
[ 0.826587] udev: starting version 151
[ 0.860561] hub 1-1:1.0: 4 ports detected
[ 1.116873] USB Mass Storage support registered.
[ 2.734937] hub 3-2:1.0: 4 ports detected
[ 13.477205] udev: starting version 151
[ 13.686799] Linux agpgart interface v0.103
[ 13.953260] USB Serial support registered for generic
[ 13.958045] USB Serial support registered for GSM modem (1-port)
[ 13.973144] option 3-2.4:1.0: GSM modem (1-port) converter detected
[ 13.973594] usb 3-2.4: GSM modem (1-port) converter now attached to ttyUSB0
[ 13.973643] option 3-2.4:1.1: GSM modem (1-port) converter detected
[ 13.973747] usb 3-2.4: GSM modem (1-port) converter now attached to ttyUSB1
[ 13.686799] Linux agpgart interface v0.103
[ 13.953260] USB Serial support registered for generic
[ 13.958045] USB Serial support registered for GSM modem (1-port)
[ 13.973144] option 3-2.4:1.0: GSM modem (1-port) converter detected
[ 13.973594] usb 3-2.4: GSM modem (1-port) converter now attached to ttyUSB0
[ 13.973643] option 3-2.4:1.1: GSM modem (1-port) converter detected
[ 13.973747] usb 3-2.4: GSM modem (1-port) converter now attached to ttyUSB1
[ 13.973783] option 3-2.4:1.2: GSM modem (1-port) converter detected
[ 13.973908] usb 3-2.4: GSM modem (1-port) converter now attached to ttyUSB2
[ 14.068472] parport_pc 00:09: reported by Plug and Play ACPI
[ 14.068526] parport0: PC-style at 0x378, irq 7 [PCSPP,TRISTATE]
[ 14.172348] lp0: using parport0 (interrupt-driven).
[ 16.456225] ppdev: user-space parallel port driver
russell@ubuntu:~$
我们需要更多信息才能为您提供帮助。比如你使用的是什么类型的无线适配器以及你使用的是什么 Ubuntu 版本。
------尝试 1：失败
一个通用提示是系统->管理->硬件驱动程序。也许你需要下载一些驱动程序。如果您的无线网卡在打开的窗口中列出，请单击按钮安装其驱动程序。
但由于信息如此之少，这只是一个盲目的尝试。
------尝试 2：失败
感谢您提供所有信息。贝尔金以在同一产品中使用不同的芯片组而闻名，F5D7050 使用至少 3 种不同的芯片组。无论如何，窗口的驱动程序文件名是黄金。您的卡可能是 rt2500。
此卡最常见的问题是多个模块（有点像 Windows 驱动程序）尝试使用它，相互冲突。您将需要做一些文件编辑 foo 来解决它。
按 ALT+F2 或打开控制台。输入或复制/粘贴：
现在在文件末尾附加这两行：
并重新启动，如果幸运的话，它应该在重新启动后工作。如果没有，可能有其他类型的冲突，再次编辑文件，删除行，重新启动，打开控制台并输入：
似乎没有加载任何 rt* 模块。所以这是我的错。但是如果 wifi 工作（有时）它必须加载一些驱动程序和 Windows 驱动程序使它看起来像一个 rt2500 ......
----------- 尝试 3：从未测试过
又一枪。有一些关于使用 rt* 芯片组和当前内核的人断开连接的报告。您可以尝试更新内核。
您需要将此 PPA添加到您的软件源中。在 PPA 页面中，您可以找到有关如何添加它们的详细说明，但总之，您必须打开 System->Administration->Sotware Sources，单击“Other Software”选项卡，单击 add 并在此处写入ppa:kernel-ppa /ppa。
之后，您需要安装更新的内核。最简单的方法是打开 Ubuntu 软件中心，在获取软件下选择新的 PPA，然后在右侧面板中选择安装Complete Generic Linux Kernel，如果您看到两个选择名称中没有 pae 的一个。
重新启动，让我们希望这次 linux 之神会对我们微笑。
如果您对新内核有任何问题，您可以在启动时按 ESC 以显示一个允许您从旧内核启动的菜单。
----------- 解决方案：OP 只是构建另一个适配器
通常是最简单的解决方案。