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Thread: Network Connection but can't do anything

  1. #1
    Join Date
    Nov 2006
    Beans
    69

    Network Connection but can't do anything

    My MacBook connects to the wireless home network without any problem (to both the 2 ghz and 5 ghz). Full strength. Yet when I try to use any Internet app (browser, email, app update) it says there is no internet connection. Can't understand. Was working without problems for weeks but not now. Haven't installed any new apps other than doing an update. Have Ubuntu 11.10.

  2. #2
    Join Date
    Aug 2011
    Location
    Berlin, Germany
    Beans
    5,652
    Distro
    Ubuntu Gnome 14.04 Trusty Tahr

    Re: Network Connection but can't do anything

    Hi,

    please show:

    Code:
    lspci -nnk | grep -iA2 net
    lsusb
    lsmod
    ifconfig -a
    iwconfig
    cat /var/lib/NetworkManager/NetworkManager.state
    sudo iwlist scan
    cat /etc/resolv.conf

  3. #3
    Join Date
    Nov 2006
    Beans
    69

    Re: Network Connection but can't do anything

    Here it is:


    carl@carl-MacBook:~$ lspci -nnk | grep -iA2 net
    02:00.0 Network controller [0280]: Broadcom Corporation BCM4321 802.11a/b/g/n [14e4:4328] (rev 03)
    Subsystem: Apple Computer Inc. Device [106b:0088]
    Kernel driver in use: wl
    --
    03:00.0 Ethernet controller [0200]: Marvell Technology Group Ltd. 88E8058 PCI-E Gigabit Ethernet Controller [11ab:436a] (rev 13)
    Subsystem: Marvell Technology Group Ltd. Device [11ab:00ba]
    Kernel driver in use: sky2
    carl@carl-MacBook:~$ lspci -nnk | grep -iA2 net
    02:00.0 Network controller [0280]: Broadcom Corporation BCM4321 802.11a/b/g/n [14e4:4328] (rev 03)
    Subsystem: Apple Computer Inc. Device [106b:0088]
    Kernel driver in use: wl
    --
    03:00.0 Ethernet controller [0200]: Marvell Technology Group Ltd. 88E8058 PCI-E Gigabit Ethernet Controller [11ab:436a] (rev 13)
    Subsystem: Marvell Technology Group Ltd. Device [11ab:00ba]
    Kernel driver in use: sky2
    carl@carl-MacBook:~$ lsusb
    Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
    Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
    Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
    Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
    Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
    Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
    Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
    Bus 002 Device 002: ID 05ac:8501 Apple, Inc. Built-in iSight [Micron]
    Bus 007 Device 002: ID 05ac:8242 Apple, Inc. IR Receiver [built-in]
    Bus 007 Device 003: ID 05ac:0229 Apple, Inc. Internal Keyboard/Trackpad (MacBook Pro) (ANSI)
    Bus 003 Device 003: ID 05ac:8205 Apple, Inc. Bluetooth HCI
    carl@carl-MacBook:~$ lsmod
    Module Size Used by
    hid_magicmouse 13570 0
    hidp 22351 1
    bnep 17923 2
    rfcomm 38408 8
    parport_pc 32114 0
    ppdev 12849 0
    binfmt_misc 17292 1
    btusb 18160 4
    bluetooth 148839 28 hidp,bnep,rfcomm,btusb
    snd_hda_codec_realtek 254125 1
    joydev 17393 0
    snd_hda_intel 24262 2
    snd_hda_codec 91754 2 snd_hda_codec_realtek,snd_hda_intel
    snd_hwdep 13276 1 snd_hda_codec
    snd_pcm 80435 2 snd_hda_intel,snd_hda_codec
    appletouch 17318 0
    hid_apple 13166 0
    snd_seq_midi 13132 0
    applesmc 18978 0
    input_polldev 13648 1 applesmc
    lib80211_crypt_tkip 17240 0
    snd_rawmidi 25241 1 snd_seq_midi
    wl 2646601 0
    snd_seq_midi_event 14475 1 snd_seq_midi
    snd_seq 51567 2 snd_seq_midi,snd_seq_midi_event
    snd_timer 28932 2 snd_pcm,snd_seq
    lib80211 14570 2 lib80211_crypt_tkip,wl
    snd_seq_device 14172 3 snd_seq_midi,snd_rawmidi,snd_seq
    i915 505159 3
    snd 55902 13 snd_hda_codec_realtek,snd_hda_intel,snd_hda_codec, snd_hwdep,snd_pcm,snd_rawmidi,snd_seq,snd_timer,sn d_seq_device
    drm_kms_helper 32889 1 i915
    drm 192194 4 i915,drm_kms_helper
    i2c_algo_bit 13199 1 i915
    soundcore 12600 1 snd
    snd_page_alloc 14115 2 snd_hda_intel,snd_pcm
    video 18908 1 i915
    apple_bl 13049 0
    lp 17455 0
    parport 40930 3 parport_pc,ppdev,lp
    usbhid 41905 0
    hid 77367 4 hid_magicmouse,hidp,hid_apple,usbhid
    firewire_ohci 35854 0
    firewire_core 56937 1 firewire_ohci
    crc_itu_t 12627 1 firewire_core
    sky2 49317 0
    carl@carl-MacBook:~$ ifconfig -a
    eth0 Link encap:Ethernet HWaddr 00:1e:c2:0d:25:f6
    UP 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)
    Interrupt:17

    eth1 Link encap:Ethernet HWaddr 00:1e:52:c5:87:8e
    inet addr:192.168.0.6 Bcast:192.168.0.255 Mask:255.255.255.0
    inet6 addr: fe80::21e:52ff:fec5:878e/64 Scope:Link
    UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
    RX packets:171 errors:0 dropped:0 overruns:0 frame:1259
    TX packets:214 errors:21 dropped:0 overruns:0 carrier:0
    collisions:0 txqueuelen:1000
    RX bytes:30021 (30.0 KB) TX bytes:24214 (24.2 KB)
    Interrupt:16

    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:116 errors:0 dropped:0 overruns:0 frame:0
    TX packets:116 errors:0 dropped:0 overruns:0 carrier:0
    collisions:0 txqueuelen:0
    RX bytes:8984 (8.9 KB) TX bytes:8984 (8.9 KB)

    carl@carl-MacBook:~$ iwconfig
    lo no wireless extensions.

    eth0 no wireless extensions.

    eth1 IEEE 802.11 Access Point: Not-Associated
    Link Quality:5 Signal level:212 Noise level:199
    Rx invalid nwid:0 invalid crypt:0 invalid misc:0

    carl@carl-MacBook:~$ cat /var/lib/NetworkManager/NetworkManager.state

    [main]
    NetworkingEnabled=true
    WirelessEnabled=true
    WWANEnabled=true
    WimaxEnabled=true
    carl@carl-MacBook:~$ sudo iwlist scan
    [sudo] password for carl:
    lo Interface doesn't support scanning.

    eth0 Interface doesn't support scanning.

    eth1 Scan completed :
    Cell 01 - Address: C4:3D:C7:8E:CE:15
    ESSID:"Lucas Network 2.4ghz b/g/n/"
    Mode:Managed
    Frequency:2.457 GHz (Channel 10)
    Quality:5/5 Signal level:-31 dBm Noise level:-92 dBm
    IE: IEEE 802.11i/WPA2 Version 1
    Group Cipher : CCMP
    Pairwise Ciphers (1) : CCMP
    Authentication Suites (1) : PSK
    IE: Unknown: DD860050F204104A0001101044000102103B00010310470010 00000000000010000000C43DC78ECE151021000D4E65746765 61722C20496E632E10230008574E4452333730301024000456 314831104200046E6F6E651054000800060050F20400011011 0017574E445233373030763228576972656C65737320415029 100800020086103C000103
    Encryption keyn
    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s
    9 Mb/s; 12 Mb/s; 18 Mb/s; 24 Mb/s; 36 Mb/s
    48 Mb/s; 54 Mb/s
    Cell 02 - Address: 00:E0:98:CC:27:AB
    ESSID:"awanas1"
    Mode:Managed
    Frequency:2.437 GHz (Channel 6)
    Quality:1/5 Signal level:-82 dBm Noise level:-92 dBm
    Encryption keyn
    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 22 Mb/s
    6 Mb/s; 9 Mb/s; 12 Mb/s; 18 Mb/s; 24 Mb/s
    36 Mb/s; 48 Mb/s; 54 Mb/s
    Cell 03 - Address: C4:3D:C7:8E:CE:17
    ESSID:"Lucas Network 5ghz a/n"
    Mode:Managed
    Frequency:5.23 GHz
    Quality:5/5 Signal level:-46 dBm Noise level:-92 dBm
    IE: IEEE 802.11i/WPA2 Version 1
    Group Cipher : CCMP
    Pairwise Ciphers (1) : CCMP
    Authentication Suites (1) : PSK
    IE: Unknown: DD860050F204104A0001101044000102103B00010310470010 00000000000010000000C43DC78ECE151021000D4E65746765 61722C20496E632E10230008574E4452333730301024000456 314831104200046E6F6E651054000800060050F20400011011 0017574E445233373030763228576972656C65737320415029 100800020086103C000103
    Encryption keyn
    Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 18 Mb/s; 24 Mb/s
    36 Mb/s; 48 Mb/s; 54 Mb/s

    carl@carl-MacBook:~$ cat /etc/resolv.conf
    # Generated by NetworkManager
    nameserver 192.168.0.252

  4. #4
    Join Date
    Aug 2011
    Location
    Berlin, Germany
    Beans
    5,652
    Distro
    Ubuntu Gnome 14.04 Trusty Tahr

    Re: Network Connection but can't do anything

    I forgot to ask:

    rfkill list

  5. #5
    Join Date
    Nov 2006
    Beans
    69

    Re: Network Connection but can't do anything

    0: brcmwl-0: Wireless LAN
    Soft blocked: no
    Hard Blocked: no
    2: hci0: Bluetooth
    Soft Blocked: no
    Hard Blocked: no

  6. #6
    Join Date
    Aug 2011
    Location
    Berlin, Germany
    Beans
    5,652
    Distro
    Ubuntu Gnome 14.04 Trusty Tahr

    Re: Network Connection but can't do anything

    Blacklist the module "brcm80211" and reboot.

  7. #7
    Join Date
    Nov 2006
    Beans
    69

    Re: Network Connection but can't do anything

    I'm sure I'm to edit a file to do that but, excuse my ignorance, what file and where is it at?

  8. #8
    Join Date
    Aug 2011
    Location
    Berlin, Germany
    Beans
    5,652
    Distro
    Ubuntu Gnome 14.04 Trusty Tahr

    Re: Network Connection but can't do anything

    In one line:

    Code:
    echo "blacklist brcm80211" | sudo tee -a /etc/modprobe.d/blacklist.conf
    or
    Code:
    gksu gedit /etc/modprobe.d/blacklist.conf
    and add the line
    Code:
    blacklist brcm80211
    save, close gedit, and reboot

  9. #9
    Join Date
    Nov 2006
    Beans
    69

    Re: Network Connection but can't do anything

    That did it!!! Thanks!!!!!!!!!!

  10. #10
    Join Date
    Nov 2006
    Beans
    69

    Re: Network Connection but can't do anything

    I spoke too soon. It was working then I got busy doing something else. And it was not connecting to any site like before. I rebooted but still have the same situation. Anything else I can try?

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