wlan 设备消失(BCM43142)

wlan 设备消失(BCM43142)
$ cat /etc/*release* | grep -i distrib
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=13.10
DISTRIB_CODENAME=saucy
DISTRIB_DESCRIPTION="Ubuntu 13.10"

$ lspci | grep -i bcm
02:00.0 Network controller: Broadcom Corporation BCM43142 802.11b/g/n (rev 01)

$ lshw -c network
*-network               
   description: Network controller
   product: BCM43142 802.11b/g/n
   vendor: Broadcom Corporation
   physical id: 0
   bus info: pci@0000:02:00.0
   version: 01
   width: 64 bits
   clock: 33MHz
   capabilities: pm msi pciexpress bus_master cap_list
   configuration: driver=bcma-pci-bridge latency=0
   resources: irq:16 memory:f1900000-f1907fff

$ lsmod | grep -i bcma
bcma                   46670  0 

$ rfkill list
0: hci0: Bluetooth
   Soft blocked: no
   Hard blocked: no

$ dmesg | grep -i wlan

$ ifconfig
lo        Link encap:Local Loopback  
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:65536  Metric:1
          RX packets:374 errors:0 dropped:0 overruns:0 frame:0
          TX packets:374 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:40211 (40.2 KB)  TX bytes:40211 (40.2 KB)

似乎 wifi 模块未加载(或加载不正确)。如果有人能解释一下这个问题并帮助重新启动 wifi,我将不胜感激。

也尝试过

$ rmmod bcma
$ modprobe bcma

但它没有帮助

更新:我做了以下操作,似乎有帮助。可以吗?

$ apt-get install bcmwl-kernel-source

答案1

记得更新您的 Ask Ubuntu 帐户资料并提供姓名和图片,以便其他人知道他们正在与谁交谈。这些数据会显示在您提出的问题、答案或评论下方,以便识别您本人。

无法识别 Broadcom 无线网卡、内核崩溃和其他兼容性问题经常发生。问题来源可能是 Broadcom 的包/驱动程序“bcmwl-kernel-source”,Ubuntu 会自动安装它。查看我在以下链接中写的内容以及它指向的链接,看看所描述的情况是否与您遇到的情况相同。

https://askubuntu.com/a/428712/254056

最后,别忘了给我们反馈并帮助社区!

干杯!

答案2

我在 Lubuntu 15.10 中遇到了类似的问题:

fred@fred-HP-Pavilion-17-Notebook-PC:~$ cat /etc/*release*|grep DISTRIB
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=15.10
DISTRIB_CODENAME=wily
DISTRIB_DESCRIPTION="Ubuntu 15.10"

lspci 和 lshw 输出似乎没问题:

$ lspci | grep -i bcm
08:00.0 Network controller: Broadcom Corporation BCM43142 802.11b/g/n (rev 01)

$ sudo lshw -c network
  *-network               
   description: Network controller
   produit: BCM43142 802.11b/g/n
   fabriquant: Broadcom Corporation
   identifiant matériel: 0
   information bus: pci@0000:08:00.0
   version: 01
   bits: 64 bits
   horloge: 33MHz
   fonctionnalités: pm msi pciexpress bus_master cap_list
   configuration: driver=bcma-pci-bridge latency=0
   ressources: irq:18 mémoire:b5500000-b5507fff
(...)

但我发现 bcma 模块有些奇怪

$ lsmod | grep bcma
$

Bcma 没有加载所以我

$ sudo modprobe bcma

然后我得到了

$ lsmod | grep bcma
bcma                   53248  0

但“使用者”列仍为 0

rfkill 列表仅显示蓝牙:

$ rfkill unblock wlan
$ rfkill list
0: hci0: Bluetooth
    Soft blocked: no
    Hard blocked: no

dmesg 没有显示有关 wlan 的任何信息,但似乎 BCM 的固件加载存在错误:

fred@fred-HP-Pavilion-17-Notebook-PC:~$ dmesg | grep -i wlan
fred@fred-HP-Pavilion-17-Notebook-PC:~$ dmesg | grep -i bcm
[    2.586276] usb 3-1.7: Product: BCM43142A0
[   12.833448] Bluetooth: hci0: BCM: chip id 70
[   12.833452] Bluetooth: hci0: BCM (001.001.011) build 0231
[   13.024259] bluetooth hci0: Direct firmware load for brcm/BCM.hcd failed with error -2
[   13.024266] Bluetooth: hci0: BCM: Patch brcm/BCM.hcd not found
[   22.816476] Modules linked in: intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel kvm uvcvideo crct10dif_pclmul snd_hda_codec_hdmi crc32_pclmul videobuf2_vmalloc videobuf2_memops videobuf2_core btusb btrtl btbcm v4l2_common btintel videodev aesni_intel snd_hda_codec_realtek snd_hda_codec_generic aes_x86_64 snd_hda_intel bluetooth media lrw snd_hda_codec gf128mul snd_hda_core glue_helper snd_hwdep cfg80211 hp_wmi sparse_keymap ablk_helper snd_pcm snd_seq_midi snd_seq_midi_event cryptd snd_rawmidi joydev snd_seq input_leds serio_raw lpc_ich snd_seq_device shpchp snd_timer hp_accel lis3lv02d intel_smartconnect input_polldev mei_me hp_wireless snd mei soundcore mac_hid parport_pc ppdev lp parport autofs4 psmouse i915 nouveau mxm_wmi i2c_algo_bit ttm drm_kms_helper ahci drm r8169 libahci
[   22.818601] Modules linked in: intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel kvm uvcvideo crct10dif_pclmul snd_hda_codec_hdmi crc32_pclmul videobuf2_vmalloc videobuf2_memops videobuf2_core btusb btrtl btbcm v4l2_common btintel videodev aesni_intel snd_hda_codec_realtek snd_hda_codec_generic aes_x86_64 snd_hda_intel bluetooth media lrw snd_hda_codec gf128mul snd_hda_core glue_helper snd_hwdep cfg80211 hp_wmi sparse_keymap ablk_helper snd_pcm snd_seq_midi snd_seq_midi_event cryptd snd_rawmidi joydev snd_seq input_leds serio_raw lpc_ich snd_seq_device shpchp snd_timer hp_accel lis3lv02d intel_smartconnect input_polldev mei_me hp_wireless snd mei soundcore mac_hid parport_pc ppdev lp parport autofs4 psmouse i915 nouveau mxm_wmi i2c_algo_bit ttm drm_kms_helper ahci drm r8169 libahci
[   44.284799] Modules linked in: xt_CHECKSUM iptable_mangle ipt_REJECT nf_reject_ipv4 xt_tcpudp ebtable_filter ebtables ip6table_filter ip6_tables xt_addrtype xt_conntrack ipt_MASQUERADE nf_nat_masquerade_ipv4 iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 iptable_filter ip_tables x_tables nf_nat nf_conntrack bridge stp llc aufs bnep binfmt_misc nls_iso8859_1 intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel kvm uvcvideo crct10dif_pclmul snd_hda_codec_hdmi crc32_pclmul videobuf2_vmalloc videobuf2_memops videobuf2_core btusb btrtl btbcm v4l2_common btintel videodev aesni_intel snd_hda_codec_realtek snd_hda_codec_generic aes_x86_64 snd_hda_intel bluetooth media lrw snd_hda_codec gf128mul snd_hda_core glue_helper snd_hwdep cfg80211 hp_wmi sparse_keymap ablk_helper snd_pcm snd_seq_midi
[  202.654555] bcma: bus0: Found chip with id 43142, rev 0x01 and package 0x08
[  202.654591] bcma: bus0: Core 0 found: ChipCommon (manuf 0x4BF, id 0x800, rev 0x28, class 0x0)
[  202.654617] bcma: bus0: Core 1 found: IEEE 802.11 (manuf 0x4BF, id 0x812, rev 0x21, class 0x0)
[  202.654669] bcma: bus0: Core 2 found: PCIe (manuf 0x4BF, id 0x820, rev 0x16, class 0x0)
[  202.654733] bcma: bus0: Core 3 found: UNKNOWN (manuf 0x43B, id 0x368, rev 0x00, class 0x0)
[  202.670219] bcma: bus0: Bus registered

因此看起来好像没有找到某些文件,并且我的硬盘在某个时候已满,我这样做了:

$ sudo apt-get remove bcmwl-kernel-source
$ sudo apt-get install bcmwl-kernel-source

当 apt-get 提示时,我禁用了 UEFI 安全启动。但到目前为止,问题还没有解决。所以我重启了电脑,进入 bios/uefi 菜单(我的电脑上是 F10)并禁用“安全启动”。它让 wifi 再次工作 :-)

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