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Thread: Ubuntu won't make wired connection

  1. #1
    Join Date
    Mar 2012
    Beans
    83

    Ubuntu won't make wired connection

    This has been a problem for some time.
    The first time it happened I was able to connect after entering the command sudo modprobe b43
    The next time this didn't work so I tried sudo modprobe b44 and was then able to connect
    Things have got worse and even after using these commands it often takes an hour or more before I can connect after shtting down, rebooting reentering modprobe commeand etc.
    Any idea what is wrong and how I can fix it?

  2. #2
    Join Date
    Aug 2011
    Location
    Berlin, Germany
    Beans
    6,485
    Distro
    Ubuntu Gnome 14.04 Trusty Tahr

    Re: Ubuntu won't make wired connection

    Please show the outputs of:
    Code:
    lspci -nnk | grep -iA2 net
    lsmod
    cat /etc/network/interfaces
    cat /etc/resolv.conf
    ifconfig -a
    iwconfig
    rfkill list

  3. #3
    Join Date
    Mar 2012
    Beans
    83

    Re: Ubuntu won't make wired connection

    Thanks here is the output

    Code:
    rob@rob-Vostro-1000:~$ lspci -nnk | grep -iA2 net
    05:00.0 Network controller [0280]: Broadcom Corporation BCM4312 802.11b/g LP-PHY [14e4:4315] (rev 01)
        Subsystem: Dell Wireless 1395 WLAN Mini-Card [1028:000b]
        Kernel driver in use: b43-pci-bridge
    --
    08:00.0 Ethernet controller [0200]: Broadcom Corporation BCM4401-B0 100Base-TX [14e4:170c] (rev 02)
        Subsystem: Dell Device [1028:022a]
        Kernel driver in use: b44
    rob@rob-Vostro-1000:~$ lsmod
    Module                  Size  Used by
    arc4                   12473  2 
    b43                   342801  0 
    mac80211              436493  1 b43
    cfg80211              178877  2 b43,mac80211
    bcma                   25651  1 b43
    b44                    31364  0 
    ssb                    50691  2 b43,b44
    joydev                 17393  0 
    dell_wmi               12601  0 
    sparse_keymap          13658  1 dell_wmi
    snd_hda_codec_idt      60251  1 
    snd_hda_intel          32719  4 
    snd_hda_codec         109562  2 snd_hda_codec_idt,snd_hda_intel
    snd_hwdep              13276  1 snd_hda_codec
    snd_pcm                80916  3 snd_hda_intel,snd_hda_codec
    snd_seq_midi           13132  0 
    dell_laptop            17767  0 
    snd_rawmidi            25424  1 snd_seq_midi
    dcdbas                 14098  1 dell_laptop
    snd_seq_midi_event     14475  1 snd_seq_midi
    snd_seq                51592  2 snd_seq_midi,snd_seq_midi_event
    snd_timer              28931  2 snd_pcm,snd_seq
    snd_seq_device         14172  3 snd_seq_midi,snd_rawmidi,snd_seq
    radeon                738095  3 
    usbhid                 41937  0 
    psmouse                86546  0 
    snd                    62218  17 snd_hda_codec_idt,snd_hda_intel,snd_hda_codec,snd_hwdep,snd_pcm,snd_rawmidi,snd_seq,snd_timer,snd_seq_device
    ttm                    65344  1 radeon
    drm_kms_helper         45466  1 radeon
    serio_raw              13027  0 
    hid                    81731  1 usbhid
    drm                   197641  5 radeon,ttm,drm_kms_helper
    soundcore              14635  1 snd
    sp5100_tco             13495  0 
    snd_page_alloc         14108  2 snd_hda_intel,snd_pcm
    k8temp                 12905  0 
    i2c_piix4              13093  0 
    i2c_algo_bit           13199  1 radeon
    wmi                    18744  1 dell_wmi
    ati_agp                13242  0 
    rfcomm                 38139  0 
    shpchp                 32265  0 
    bnep                   17830  2 
    bluetooth             158447  10 rfcomm,bnep
    parport_pc             32114  0 
    ppdev                  12849  0 
    video                  19115  0 
    mac_hid                13077  0 
    lp                     17455  0 
    parport                40930  3 parport_pc,ppdev,lp
    sdhci_pci              18324  0 
    sdhci                  28241  1 sdhci_pci
    pata_atiixp            12999  0
    Code:
    rob@rob-Vostro-1000:~$ cat /etc/network/interfaces
    auto lo
    iface lo inet loopback
    Code:
    rob@rob-Vostro-1000:~$ cat /etc/resolv.conf
    # Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8)
    #     DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN
    nameserver 127.0.0.1
    search home
    Code:
    rob@rob-Vostro-1000:~$ ifconfig -a
    eth2      Link encap:Ethernet  HWaddr 00:1d:09:d3:15:2d  
              inet addr:192.168.1.65  Bcast:192.168.1.255  Mask:255.255.255.0
              inet6 addr: fe80::21d:9ff:fed3:152d/64 Scope:Link
              UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
              RX packets:154222 errors:0 dropped:0 overruns:0 frame:0
              TX packets:93671 errors:0 dropped:0 overruns:0 carrier:0
              collisions:0 txqueuelen:1000 
              RX bytes:213173622 (213.1 MB)  TX bytes:10101678 (10.1 MB)
              Interrupt:21 
    
    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:16436  Metric:1
              RX packets:2833 errors:0 dropped:0 overruns:0 frame:0
              TX packets:2833 errors:0 dropped:0 overruns:0 carrier:0
              collisions:0 txqueuelen:0 
              RX bytes:299778 (299.7 KB)  TX bytes:299778 (299.7 KB)
    
    wlan0     Link encap:Ethernet  HWaddr 00:16:44:bf:c9:00  
              BROADCAST MULTICAST  MTU:1500  Metric:1
              RX packets:0 errors:0 dropped:0 overruns:0 frame:0
              TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
              collisions:0 txqueuelen:1000 
              RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)
    Code:
    rob@rob-Vostro-1000:~$ iwconfig
    lo        no wireless extensions.
    
    eth2      no wireless extensions.
    
    wlan0     IEEE 802.11bg  ESSID:off/any  
              Mode:Managed  Access Point: Not-Associated   Tx-Power=0 dBm   
              Retry  long limit:7   RTS thr:off   Fragment thr:off
              Power Management:on
    Code:
    rob@rob-Vostro-1000:~$ rfkill list
    Last edited by Iowan; January 15th, 2014 at 10:57 PM. Reason: Added code tags

  4. #4
    Join Date
    Aug 2011
    Location
    Berlin, Germany
    Beans
    6,485
    Distro
    Ubuntu Gnome 14.04 Trusty Tahr

    Re: Ubuntu won't make wired connection

    Install the firmware for the LP-PHY chipset:
    Code:
    wget http://media.cdn.ubuntu-de.org/forum/attachments/04/32/2480236-Broadcom_Firmware.tar.gz 
    sudo tar xvf 2480236-Broadcom_Firmware.tar.gz -C /lib/firmware/
    Reboot.

  5. #5
    Join Date
    Mar 2012
    Beans
    83

    Re: Ubuntu won't make wired connection

    I still needed modprobe b44 to connect

    Iran the first commands again and got

    rob@rob-Vostro-1000:~$
    Code:
     cat /etc/resolv.conf
    # Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8)
    #     DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN
    nameserver 127.0.0.1
    search home
    rob@rob-Vostro-1000:~$ ifconfig -a
    eth2      Link encap:Ethernet  HWaddr 00:1d:09:d3:15:2d  
              inet addr:192.168.1.65  Bcast:192.168.1.255  Mask:255.255.255.0
              inet6 addr: fe80::21d:9ff:fed3:152d/64 Scope:Link
              UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
              RX packets:271 errors:0 dropped:0 overruns:0 frame:0
              TX packets:354 errors:0 dropped:0 overruns:0 carrier:0
              collisions:0 txqueuelen:1000 
              RX bytes:124172 (124.1 KB)  TX bytes:55022 (55.0 KB)
              Interrupt:21 
    
    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:16436  Metric:1
              RX packets:616 errors:0 dropped:0 overruns:0 frame:0
              TX packets:616 errors:0 dropped:0 overruns:0 carrier:0
              collisions:0 txqueuelen:0 
              RX bytes:50267 (50.2 KB)  TX bytes:50267 (50.2 KB)
    
    wlan0     Link encap:Ethernet  HWaddr 00:16:44:bf:c9:00  
              BROADCAST MULTICAST  MTU:1500  Metric:1
              RX packets:0 errors:0 dropped:0 overruns:0 frame:0
              TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
              collisions:0 txqueuelen:1000 
              RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)
    
    rob@rob-Vostro-1000:~$ iwconfig
    lo        no wireless extensions.
    
    eth2      no wireless extensions.
    
    wlan0     IEEE 802.11bg  ESSID:off/any  
              Mode:Managed  Access Point: Not-Associated   Tx-Power=0 dBm   
              Retry  long limit:7   RTS thr:off   Fragment thr:off
              Power Management:on
              
    rob@rob-Vostro-1000:~$ rfkill list
    Last edited by Wild Man; January 16th, 2014 at 03:24 AM. Reason: Added code tags

  6. #6
    Join Date
    Feb 2008
    Location
    Texas
    Beans
    16,032
    Distro
    Ubuntu Mate 16.04 Xenial Xerus

    Re: Ubuntu won't make wired connection

    Please use code tags - if you are using New Reply button - highlight text and use the # button in the text box header.

    If using Quick Reply then [code] at the beginning and [/code] at the end.

  7. #7
    Join Date
    Mar 2012
    Beans
    83

    Re: Ubuntu won't make wired connection

    Is this correct?
    Code:
    lspci -nnk | grep -iA2 net
    05:00.0 Network controller [0280]: Broadcom Corporation BCM4312 802.11b/g LP-PHY [14e4:4315] (rev 01)
        Subsystem: Dell Wireless 1395 WLAN Mini-Card [1028:000b]
        Kernel driver in use: b43-pci-bridge
    --
    08:00.0 Ethernet controller [0200]: Broadcom Corporation BCM4401-B0 100Base-TX [14e4:170c] (rev 02)
        Subsystem: Dell Device [1028:022a]
        Kernel driver in use: b44
    Code:
    lsmod
    Module                  Size  Used by
    b44                    31364  0 
    arc4                   12473  2 
    b43                   342801  0 
    mac80211              436493  1 b43
    cfg80211              178877  2 b43,mac80211
    bcma                   25651  1 b43
    ssb                    50691  2 b44,b43
    joydev                 17393  0 
    dell_wmi               12601  0 
    snd_hda_codec_idt      60251  1 
    sparse_keymap          13658  1 dell_wmi
    snd_hda_intel          32719  2 
    snd_hda_codec         109562  2 snd_hda_codec_idt,snd_hda_intel
    snd_hwdep              13276  1 snd_hda_codec
    snd_pcm                80916  2 snd_hda_intel,snd_hda_codec
    snd_seq_midi           13132  0 
    dell_laptop            17767  0 
    snd_rawmidi            25424  1 snd_seq_midi
    dcdbas                 14098  1 dell_laptop
    snd_seq_midi_event     14475  1 snd_seq_midi
    snd_seq                51592  2 snd_seq_midi,snd_seq_midi_event
    radeon                738095  4 
    snd_timer              28931  2 snd_pcm,snd_seq
    snd_seq_device         14172  3 snd_seq_midi,snd_rawmidi,snd_seq
    psmouse                86546  0 
    ttm                    65344  1 radeon
    drm_kms_helper         45466  1 radeon
    serio_raw              13027  0 
    drm                   197641  6 radeon,ttm,drm_kms_helper
    snd                    62218  13 snd_hda_codec_idt,snd_hda_intel,snd_hda_codec,snd_hwdep,snd_pcm,snd_rawmidi,snd_seq,snd_timer,snd_seq_device
    soundcore              14635  1 snd
    k8temp                 12905  0 
    sp5100_tco             13495  0 
    snd_page_alloc         14108  2 snd_hda_intel,snd_pcm
    i2c_piix4              13093  0 
    i2c_algo_bit           13199  1 radeon
    rfcomm                 38139  0 
    bnep                   17830  2 
    parport_pc             32114  0 
    bluetooth             158447  10 rfcomm,bnep
    ppdev                  12849  0 
    shpchp                 32265  0 
    wmi                    18744  1 dell_wmi
    ati_agp                13242  0 
    video                  19115  0 
    mac_hid                13077  0 
    lp                     17455  0 
    parport                40930  3 parport_pc,ppdev,lp
    sdhci_pci              18324  0 
    sdhci                  28241  1 sdhci_pci
    pata_atiixp            12999  0 
    usbhid                 41937  0 
    hid                    81731  1 usbhid
    Code:
    cat /etc/network/interfaces
    auto lo
    iface lo inet loopback
    Code:
    cat /etc/resolv.conf
    # Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8)
    #     DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN
    nameserver 127.0.0.1
    search home
    Code:
    ifconfig -a
    eth2      Link encap:Ethernet  HWaddr 00:1d:09:d3:15:2d  
              inet addr:192.168.1.65  Bcast:192.168.1.255  Mask:255.255.255.0
              inet6 addr: fe80::21d:9ff:fed3:152d/64 Scope:Link
              UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
              RX packets:133165 errors:0 dropped:0 overruns:0 frame:0
              TX packets:80566 errors:0 dropped:0 overruns:0 carrier:0
              collisions:0 txqueuelen:1000 
              RX bytes:189058685 (189.0 MB)  TX bytes:7655856 (7.6 MB)
              Interrupt:21 
    
    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:16436  Metric:1
              RX packets:1481 errors:0 dropped:0 overruns:0 frame:0
              TX packets:1481 errors:0 dropped:0 overruns:0 carrier:0
              collisions:0 txqueuelen:0 
              RX bytes:133921 (133.9 KB)  TX bytes:133921 (133.9 KB)
    
    wlan0     Link encap:Ethernet  HWaddr 00:16:44:bf:c9:00  
              BROADCAST MULTICAST  MTU:1500  Metric:1
              RX packets:0 errors:0 dropped:0 overruns:0 frame:0
              TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
              collisions:0 txqueuelen:1000 
              RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)
    Code:
    iwconfig
    lo        no wireless extensions.
    
    eth2      no wireless extensions.
    
    wlan0     IEEE 802.11bg  ESSID:off/any  
              Mode:Managed  Access Point: Not-Associated   Tx-Power=0 dBm   
              Retry  long limit:7   RTS thr:off   Fragment thr:off
              Power Management:on
    Code:
    rfkill list
    0: phy0: Wireless LAN
        Soft blocked: no
        Hard blocked: no

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