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Thread: Strange problem in just one wifi cafe ...

  1. #1
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    Jun 2012
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    Strange problem in just one wifi cafe ...

    Kubuntu 12.04, acer d270 netbook with broadcom 4313 wireless card. No windows partition anymore.

    This is very strange to me, and I don't know if this may be beyond the scope of this forum, but my wireless does very strange things in just one hotspot cafe in the four ones I go to. Not only is it just in one place, my netbook is apparently the only machine that causes this problem.

    I thought I had it solved. I had mint 13 (ubuntu 12.04 based) installed with the patched older generic non-pae kernel to run the cedarview graphics drivers. As it turns out, that method solves the video problem but can introduce other problems due to holding an older kernel/headers.

    Then I discovered the right way to do that and installed kubuntu 12.04 and installed the drivers through additional drivers after updating the kernel. It worked fine in this place a couple of times. Then yesterday it did it again.

    What happens is that generally it takes forever to configure the network address when I boot kubuntu.

    Then, the network goes dead for everyone else. Of course, they think I'm downloading massive amounts of data (they haven't set up their network very much so it isn't blocked), but I was just browsing with firefox. And I'm not getting decent response either.

    Then I lost connection and when I clicked the network management widget on the panel it couldn't even find their router.

    Like many cafes, their network isn't maintained a whole lot. If at all. If it stopped working it'd take them a week to get someone to look at it. And their baristas aren't any more technically literate than the average one. So not much help there.

    I'm clueless at this point. My other laptops never caused this problem there. Maybe my wireless card just doesn't like poorly configured networks. I'm weak with this sort of thing anyway.

    I haven't set up a firewall yet because I'm still in the process of figuring it out. That could very well be a problem here, but in that case why does it take forever to configure the address in the first place? Everywhere else I go, it's almost always connected by the time boot is complete.

  2. #2
    Join Date
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    Beans
    7,891
    Distro
    Ubuntu Mate 20.04 Focal Fossa

    Re: Strange problem in just one wifi cafe ...

    Please show the outputs of:
    Code:
    lspci -nnk | grep -iA2 net
    lsusb
    lsmod
    iwconfig
    cat /etc/network/interfaces
    cat /etc/resolv.conf
    Plus the outputs when connected there:
    Code:
    iwconfig
    ifconfig -a
    iwlist chan
    sudo iwlist scan
    route -n

  3. #3
    Join Date
    Jun 2012
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    Re: Strange problem in just one wifi cafe ...

    Thanks for the response. I'll get back to you next time I go there.

  4. #4
    Join Date
    Jun 2012
    Beans
    822

    Re: Strange problem in just one wifi cafe ...

    OK, here's what you requested. The first part I was connected to a network that hasn't caused problems. I'll delete their names for privacy.

    ~$ lspci -nnk | grep -iA2 net
    Code:
    01:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8101E/RTL8102E PCI Express Fast Ethernet controller [10ec:8136] (rev 05)
    Subsystem: Acer Incorporated [ALI] Device [1025:061f]
    Kernel driver in use: r8169
    --
    02:00.0 Network controller [0280]: Broadcom Corporation BCM4313 802.11b/g/n Wireless LAN Controller [14e4:4727] (rev 01)
    Subsystem: Foxconn International, Inc. Device [105b:e042]
    Kernel driver in use: wl
    ~$ lsusb
    Code:
    Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
    Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 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 001 Device 002: ID 1bcf:288a Sunplus Innovation Technology Inc.
    Bus 002 Device 002: ID 045e:0745 Microsoft Corp. Nano Transceiver v1.0 for Bluetooth
    Bus 001 Device 004: ID 0781:5530 SanDisk Corp. Cruzer
    $ lsmod
    Code:
    Module Size Used by
    nls_iso8859_1 12617 1
    nls_cp437 12751 1
    vfat 17308 1
    fat 55605 1 vfat
    usb_storage 39683 1
    usbhid 41937 0
    hid 77428 1 usbhid
    snd_hrtimer 12648 1
    snd_hda_codec_realtek 174313 1
    bnep 17830 2
    rfcomm 38139 0
    bluetooth 158479 10 bnep,rfcomm
    snd_hda_codec_hdmi 31775 1
    parport_pc 32114 0
    ppdev 12849 0
    joydev 17393 0
    acer_wmi 23612 0
    sparse_keymap 13658 1 acer_wmi
    binfmt_misc 17292 1
    snd_hda_intel 32719 3
    snd_hda_codec 109562 3 snd_hda_codec_realtek,snd_hda_codec_hdmi,snd_hda_intel
    uvcvideo 67203 0
    snd_hwdep 13276 1 snd_hda_codec
    videodev 86588 1 uvcvideo
    snd_pcm 80916 3 snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec
    psmouse 86520 0
    serio_raw 13027 0
    snd_seq_midi 13132 0
    lib80211_crypt_tkip 17275 0
    snd_rawmidi 25424 1 snd_seq_midi
    snd_seq_midi_event 14475 1 snd_seq_midi
    snd_seq 51592 3 snd_seq_midi,snd_seq_midi_event
    wl 2906597 0
    snd_timer 28931 3 snd_hrtimer,snd_pcm,snd_seq
    snd_seq_device 14172 3 snd_seq_midi,snd_rawmidi,snd_seq
    cedarview_gfx 381372 4
    snd 62218 17 snd_hda_codec_realtek,snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec,snd_hwdep,snd_pcm,snd_rawmidi,snd_seq,snd_timer,snd_seq_device
    ttm 64734 1 cedarview_gfx
    drm_kms_helper 32561 1 cedarview_gfx
    rts_pstor 353252 0
    drm 196391 6 cedarview_gfx,ttm,drm_kms_helper
    cfg80211 178877 1 wl
    lib80211 14040 2 lib80211_crypt_tkip,wl
    mac_hid 13077 0
    soundcore 14635 1 snd
    snd_page_alloc 14108 2 snd_hda_intel,snd_pcm
    i2c_algo_bit 13199 1 cedarview_gfx
    lp 17455 0
    parport 40930 3 parport_pc,ppdev,lp
    wmi 18744 1 acer_wmi
    video 19115 1 cedarview_gfx
    r8169 56368 0
    $ iwconfig
    Code:
    lo no wireless extensions.
    
    eth1 IEEE 802.11abg ESSID:"*** Name deleted ***"
    Mode:Managed Frequency:2.437 GHz Access Point: 54:04:A6:CA:4E:0D
    Retry long limit:7 RTS thrff Fragment thrff
    Power Managementff
    
    eth0 no wireless extensions.
    $ cat /etc/network/interfaces
    Code:
    auto lo
    iface lo inet loopback
    $ cat /etc/resolv.conf
    Code:
    # 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
    Okay. Now this was while connected to the problematic network.

    Their network worked fine a couple of times before last Friday, and I was the only one there at the time this morning. It seemed slow, but I'm not actually 100% sure it (or me) was malfunctioning. But here goes:

    $ iwconfig
    Code:
    lo no wireless extensions.
    
    eth1 IEEE 802.11abg ESSID:"*** name deleted ***"
    Mode:Managed Frequency:2.412 GHz Access Point: 00:26:82:F5:AF:7C
    Retry long limit:7 RTS thrff Fragment thrff
    Power Managementn
    
    eth0 no wireless extensions.
    ~$ ifconfig -a
    Code:
    eth0 Link encap:Ethernet HWaddr 04:7d:7b:50:97:53
    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:44 Base address:0xc000
    
    eth1 Link encap:Ethernet HWaddr c0:18:85:0e:f5:ac
    inet addr:192.168.0.74 Bcast:192.168.0.255 Mask:255.255.255.0
    inet6 addr: fe80::c218:85ff:fe0e:f5ac/64 Scope:Link
    UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
    RX packets:1849 errors:0 dropped:0 overruns:0 frame:2356
    TX packets:1485 errors:16 dropped:0 overruns:0 carrier:0
    collisions:0 txqueuelen:1000
    RX bytes:2158947 (2.1 MB) TX bytes:197123 (197.1 KB)
    Interrupt:17
    
    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:522 errors:0 dropped:0 overruns:0 frame:0
    TX packets:522 errors:0 dropped:0 overruns:0 carrier:0
    collisions:0 txqueuelen:0
    RX bytes:43838 (43.8 KB) TX bytes:43838 (43.8 KB)
    ~$ iwlist chan
    Code:
    lo no frequency information.
    
    eth1 26 channels in total; available frequencies :
    Channel 01 : 2.412 GHz
    Channel 02 : 2.417 GHz
    Channel 03 : 2.422 GHz
    Channel 04 : 2.427 GHz
    Channel 05 : 2.432 GHz
    Channel 06 : 2.437 GHz
    Channel 07 : 2.442 GHz
    Channel 08 : 2.447 GHz
    Channel 09 : 2.452 GHz
    Channel 10 : 2.457 GHz
    Channel 11 : 2.462 GHz
    Channel 12 : 2.467 GHz
    Channel 13 : 2.472 GHz
    Channel 14 : 2.484 GHz
    Channel 36 : 5.18 GHz
    Channel 38 : 5.19 GHz
    Channel 40 : 5.2 GHz
    Channel 42 : 5.21 GHz
    Channel 44 : 5.22 GHz
    Channel 46 : 5.23 GHz
    Channel 48 : 5.24 GHz
    Channel 149 : 5.745 GHz
    Channel 153 : 5.765 GHz
    Channel 157 : 5.785 GHz
    Channel 161 : 5.805 GHz
    Channel 165 : 5.825 GHz
    Current Frequency=2.412 GHz (Channel 1)
    
    eth0 no frequency information.
    ~$ sudo iwlist scan
    Code:
    lo Interface doesn't support scanning.
    
    eth1 Scan completed :
    Cell 01 - Address: 00:26:82:F5:AF:7C
    Channel:1
    Frequency:2.412 GHz (Channel 1)
    Quality=70/70 Signal level=-40 dBm
    Encryption keyn
    ESSID:"T.A.N."
    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 18 Mb/s
    24 Mb/s; 36 Mb/s; 54 Mb/s
    Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 48 Mb/s
    Mode:Master
    Extra:tsf=0000000000000000
    Extra: Last beacon: 88ms ago
    IE: Unknown: 0006542E412E4E2E
    IE: Unknown: 010882848B962430486C
    IE: Unknown: 030101
    IE: Unknown: 2A0104
    IE: Unknown: 2F0104
    IE: IEEE 802.11i/WPA2 Version 1
    Group Cipher : CCMP
    Pairwise Ciphers (1) : CCMP
    Authentication Suites (1) : PSK
    IE: Unknown: 32040C121860
    IE: Unknown: 2D1AFC181BFFFF000000000000000000000000000000000000000000
    IE: Unknown: 3D1601001700000000000000000000000000000000000000
    IE: Unknown: DD090010180225F02C0000
    IE: Unknown: DD180050F2020101800003A4000027A4000042435E0062322F00
    Cell 02 - Address: AC:81:12:C4:A9:52
    Channel:1
    Frequency:2.412 GHz (Channel 1)
    Quality=22/70 Signal level=-88 dBm
    Encryption keyn
    ESSID:"Web Waves"
    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 18 Mb/s
    24 Mb/s; 36 Mb/s; 54 Mb/s
    Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 48 Mb/s
    Mode:Master
    Extra:tsf=0000000000000000
    Extra: Last beacon: 88ms ago
    IE: Unknown: 0009576562205761766573
    IE: Unknown: 010882848B962430486C
    IE: Unknown: 030101
    IE: Unknown: 050400010000
    IE: Unknown: 2A0102
    IE: Unknown: 2F0102
    IE: IEEE 802.11i/WPA2 Version 1
    Group Cipher : CCMP
    Pairwise Ciphers (1) : CCMP
    Authentication Suites (1) : PSK
    IE: Unknown: 32040C121860
    IE: Unknown: 2D1AFC181BFFFF000000000000000000000000000000000000000000
    IE: Unknown: 3D1601001700000000000000000000000000000000000000
    IE: Unknown: DD090010180201F02C0000
    IE: Unknown: DD180050F2020101800003A4000027A4000042435E0062322F00
    Cell 03 - Address: 00:20:A6:6E:78:B1
    Channel:1
    Frequency:2.412 GHz (Channel 1)
    Quality=36/70 Signal level=-74 dBm
    Encryption keyn
    ESSID:"MRE-Wolfville"
    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s
    12 Mb/s; 24 Mb/s; 36 Mb/s
    Bit Rates:9 Mb/s; 18 Mb/s; 48 Mb/s; 54 Mb/s
    Mode:Master
    Extra:tsf=0000000000000000
    Extra: Last beacon: 88ms ago
    IE: Unknown: 000D4D52452D576F6C6676696C6C65
    IE: Unknown: 010882848B960C183048
    IE: Unknown: 030101
    IE: Unknown: 050400010000
    IE: Unknown: 0706434120010B1B
    IE: Unknown: 2A0102
    IE: Unknown: 32041224606C
    IE: WPA Version 1
    Group Cipher : TKIP
    Pairwise Ciphers (1) : TKIP
    Authentication Suites (1) : PSK
    IE: Unknown: DD0900037F01010006FF7F
    IE: Unknown: DD0C00037F020101000002A44000
    Cell 04 - Address: 1C:AF:F7A:F93
    Channel:2
    Frequency:2.417 GHz (Channel 2)
    Quality=20/70 Signal level=-90 dBm
    Encryption keyn
    ESSID:"Harvest"
    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
    Bit Rates:24 Mb/s; 36 Mb/s; 48 Mb/s; 54 Mb/s
    Mode:Master
    Extra:tsf=0000000000000000
    Extra: Last beacon: 88ms ago
    IE: Unknown: 000748617276657374
    IE: Unknown: 010882848B960C121824
    IE: Unknown: 030102
    IE: Unknown: 050400010000
    IE: Unknown: 2A0100
    IE: IEEE 802.11i/WPA2 Version 1
    Group Cipher : TKIP
    Pairwise Ciphers (2) : CCMP TKIP
    Authentication Suites (1) : PSK
    IE: WPA Version 1
    Group Cipher : TKIP
    Pairwise Ciphers (2) : CCMP TKIP
    Authentication Suites (1) : PSK
    IE: Unknown: 32043048606C
    IE: Unknown: DD180050F2020101820003A4000027A4000042435E0062322F00
    IE: Unknown: DD1E00904C334C101BFFFF000000000000000000000000000000000000000000
    IE: Unknown: 2D1A4C101BFFFF000000000000000000000000000000000000000000
    IE: Unknown: DD1A00904C3402080800000000000000000000000000000000000000
    IE: Unknown: 3D1602080800000000000000000000000000000000000000
    IE: Unknown: 4A0E14000A002C01C800140005001900
    IE: Unknown: 7F0101
    IE: Unknown: DD0900037F01010000FF7F
    IE: Unknown: DD0A00037F04010000004000
    Cell 05 - Address: 20:10:7A:95:43:B5
    Channel:6
    Frequency:2.437 GHz (Channel 6)
    Quality=25/70 Signal level=-85 dBm
    Encryption keyn
    ESSID:"MOTOROLA-C260C"
    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 18 Mb/s
    24 Mb/s; 36 Mb/s; 54 Mb/s
    Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 48 Mb/s
    Mode:Master
    Extra:tsf=0000000000000000
    Extra: Last beacon: 88ms ago
    IE: Unknown: 000E4D4F544F524F4C412D4332363043
    IE: Unknown: 010882848B962430486C
    IE: Unknown: 030106
    IE: Unknown: 050400010000
    IE: Unknown: 2A0100
    IE: Unknown: 2F0100
    IE: IEEE 802.11i/WPA2 Version 1
    Group Cipher : CCMP
    Pairwise Ciphers (1) : CCMP
    Authentication Suites (1) : PSK
    IE: Unknown: 32040C121860
    IE: Unknown: 2D1AFC181BFFFF000000000000000000000000000000000000000000
    IE: Unknown: 3D1606080000000000000000000000000000000000000000
    IE: Unknown: DD090010180200F02C0000
    IE: Unknown: DD180050F2020101800003A4000027A4000042435E0062322F00
    Cell 06 - Address: 00:26:82:C7:BA:7F
    Channel:6
    Frequency:2.437 GHz (Channel 6)
    Quality=20/70 Signal level=-90 dBm
    Encryption keyn
    ESSID:"meow"
    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 18 Mb/s
    24 Mb/s; 36 Mb/s; 54 Mb/s
    Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 48 Mb/s
    Mode:Master
    Extra:tsf=0000000000000000
    Extra: Last beacon: 88ms ago
    IE: Unknown: 00046D656F77
    IE: Unknown: 010882848B962430486C
    IE: Unknown: 030106
    IE: Unknown: 050400010000
    IE: Unknown: 2A0100
    IE: Unknown: 2F0100
    IE: IEEE 802.11i/WPA2 Version 1
    Group Cipher : TKIP
    Pairwise Ciphers (2) : CCMP TKIP
    Authentication Suites (1) : PSK
    IE: Unknown: 32040C121860
    IE: Unknown: 2D1AFC181BFFFF000000000000000000000000000000000000000000
    IE: Unknown: 3D1606081500000000000000000000000000000000000000
    IE: Unknown: DD090010180201F02C0000
    IE: Unknown: DD180050F2020101800003A4000027A4000042435E0062322F00
    Cell 07 - Address: 00:22:3F:E5:CC8
    Channel:7
    Frequency:2.442 GHz (Channel 7)
    Quality=21/70 Signal level=-89 dBm
    Encryption keyn
    ESSID:"TOW SECURE"
    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 6 Mb/s; 9 Mb/s
    11 Mb/s; 12 Mb/s; 18 Mb/s
    Bit Rates:24 Mb/s; 36 Mb/s; 48 Mb/s; 54 Mb/s
    Mode:Master
    Extra:tsf=0000000000000000
    Extra: Last beacon: 88ms ago
    IE: Unknown: 000A544F5720534543555245
    IE: Unknown: 010882848B0C12961824
    IE: Unknown: 030107
    IE: Unknown: 050400010000
    IE: Unknown: 0706555320010B1B
    IE: Unknown: 2A0100
    IE: Unknown: 32043048606C
    IE: IEEE 802.11i/WPA2 Version 1
    Group Cipher : TKIP
    Pairwise Ciphers (2) : TKIP CCMP
    Authentication Suites (1) : PSK
    Preauthentication Supported
    IE: Unknown: DD0A0002BC0100223FE5CCD8
    
    eth0 Interface doesn't support scanning.
    ~$ route -n
    Code:
    Kernel IP routing table
    Destination Gateway Genmask Flags Metric Ref Use Iface
    0.0.0.0 192.168.0.1 0.0.0.0 UG 0 0 0 eth1
    169.254.0.0 0.0.0.0 255.255.0.0 U 1000 0 0 eth1
    192.168.0.0 0.0.0.0 255.255.255.0 U 2 0 0 eth1
    Hope that makes sense to semebody ....
    Last edited by matt_symes; April 9th, 2013 at 07:04 PM. Reason: Please use code tags for terminal output

  5. #5
    Join Date
    Aug 2011
    Location
    Berlin, Germany
    Beans
    7,891
    Distro
    Ubuntu Mate 20.04 Focal Fossa

    Re: Strange problem in just one wifi cafe ...

    Same as here:

    http://ubuntuforums.org/showthread.p...1#post12590901

    If your kernel is 3.5 that enough. If it is 3.2 you need to install the 3.6-backport-modules

  6. #6
    Join Date
    Jun 2012
    Beans
    822

    Re: Strange problem in just one wifi cafe ...

    Thanks for the response.

    Kernel is 3.2.0-40-generic-pae. I didn't think cedarview graphics worked with ubuntu (kubuntu actually) 12.10 so no kernel 3.5.

    sudo apt-get install 3.6-backport-modules didn't find any package by that name.

    On top of that, I just did a system update which updated the kernel to 3.2.0-40 and the screen brightness control no longer works!!!! At least it still recognizes the refresh rate. But that's another thread. Maybe it overwrote a config file I had to modify before. This just happened.

    So do I do what your link suggests? I don't know how to clean up the old config either.

    Or should I just upgrade to 12.10? Will the cedarview proprietary drivers still work?

  7. #7
    Join Date
    Jun 2012
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    Re: Strange problem in just one wifi cafe ...

    I just tried more searching for 3.6-backport-module.

    I'm led to something that strongly recommended I use apt or synaptic instead, but didn't name anything I could find on synaptic except for something described as an "empty package" for compatibility on kernel updates. That doesn't sound useful.

    Never had this much trouble with synaptic before, and I'm even more confused.

  8. #8
    Join Date
    Jun 2012
    Beans
    822

    Re: Strange problem in just one wifi cafe ...

    OK, I've calmed down slightly. Losing my screen brightness control as well a couple of hours ago has me more discombobulated.

    I found this and installed it: linux-backports-modules-cw-3.6-precise-generic. Seemed like the right one.

    The wireless worked on reboot, but I'm not hooked into the network I had problems with. Hopefully it works.

  9. #9
    Join Date
    Jun 2012
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    822

    Re: Strange problem in just one wifi cafe ...

    I'm connected to the problematic network. There's another guy here playing an online mmrpg game, and it's working for him. Before I was knocking people pretty much clear off the wireless.

    I'll give it another try or two and mark this solved.

    Thanks for the responses.

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