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Thread: Laptop freezes when connecting to WiFi

  1. #1
    Join Date
    Apr 2013
    Beans
    7

    Question Laptop freezes when connecting to WiFi

    Hi everyone,

    So I recently upgraded my old Core 2 Duo laptop from Vista to Ubuntu 13.04 as I would like to learn how to use Linux. Everything works fine until I try to connect to WiFi (ethernet works fine though). I saw another similar post but I'm not sure if it can apply to me as well, and I don't know if it worked for the guy.

    Anyway, here's the catch: I have 2 wireless adapters. The internal PCI-E one is an Atherox AR928X, while the PCMCIA one uses a Realtek 8176 chip (I keep this card as it also doubles as a USB3 port). So, when I try to connect to WiFi, or when the laptop tells me I'm disconnected, everything just freezes and I have to reboot.

    Could it be an issue with drivers? Or are two wireless cards too many? I'm pretty sure the laptop itself is good enough since it ran Vista and Win7 flawlessly. Also, I tried Mint for a short while, but didn't have WiFi problems. Any ideas? Thanks in advance!

    Additional info: the primary disk is a 64gb Kingston ssd (upgraded), secondary drive slot is empty, and to run any linux distro I have to boot with ACPI off.
    Thanks again!

  2. #2
    Join Date
    Aug 2011
    Location
    Berlin, Germany
    Beans
    4,955
    Distro
    Xubuntu 12.04 Precise Pangolin

    Re: Laptop freezes when connecting to WiFi

    Please open a terminal with CTRL+ALT+T and show these outputs:
    Code:
    lspci -nnk | grep -iA2 net
    lsusb
    lsmod
    iwconfig
    rfkill list
    sudo iwlist scan

  3. #3
    Join Date
    Apr 2013
    Beans
    7

    Re: Laptop freezes when connecting to WiFi

    Sorry it took so long, it was a race against time. Also, it seems like the graphics driver crashed when everything froze. Yay! Funky colours!

    Code:
    mc837@Mc837-X71SL:~$ lspci -nnk | grep -iA2 net
    
    00:04.0 Ethernet controller [0200]: Silicon Integrated Systems [SiS] 191 Gigabit Ethernet Adapter [1039:0191] (rev 02)
        Subsystem: ASUSTeK Computer Inc. Device [1043:1815]
        Kernel driver in use: sis190
    --
    02:00.0 Network controller [0280]: Atheros Communications Inc. AR928X Wireless Network Adapter (PCI-Express) [168c:002a] (rev 01)
        Subsystem: AzureWave AW-NE771 802.11bgn Wireless Mini PCIe Card [AR9281] [1a3b:1067]
        Kernel driver in use: ath9k
    
    
    
    mc837@Mc837-X71SL:~$ lsusb
    
    Bus 001 Device 002: ID 04f2:b012 Chicony Electronics Co., Ltd 1.3 MPixel UVC Webcam
    Bus 001 Device 004: ID 0bda:8176 Realtek Semiconductor Corp. RTL8188CUS 802.11n WLAN Adapter
    Bus 001 Device 005: ID 058f:6387 Alcor Micro Corp. Flash Drive
    Bus 003 Device 002: ID 0b05:1751 ASUSTek Computer, Inc. BT-253 Bluetooth Adapter
    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:0002 Linux Foundation 2.0 root hub
    Bus 005 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
    
    
    
    mc837@Mc837-X71SL:~$ lsmod
    
    Module                  Size  Used by
    nls_iso8859_1          12713  1 
    usb_storage            57204  1 
    parport_pc             32688  0 
    ppdev                  17073  0 
    rfcomm                 42641  12 
    bnep                   18036  2 
    arc4                   12615  4 
    joydev                 17377  0 
    coretemp               13355  0 
    ath9k                 149924  0 
    ath9k_common           14055  1 ath9k
    snd_hda_codec_realtek    78399  1 
    snd_hda_intel          39619  3 
    ath9k_hw              413680  2 ath9k_common,ath9k
    uvcvideo               80847  0 
    snd_hda_codec         136128  2 snd_hda_codec_realtek,snd_hda_intel
    snd_hwdep              13602  1 snd_hda_codec
    rtl8192cu              67699  0 
    snd_pcm                97451  2 snd_hda_codec,snd_hda_intel
    snd_page_alloc         18710  2 snd_pcm,snd_hda_intel
    rtlwifi                79673  1 rtl8192cu
    snd_seq_midi           13324  0 
    snd_seq_midi_event     14899  1 snd_seq_midi
    snd_rawmidi            30180  1 snd_seq_midi
    ath                    23827  3 ath9k_common,ath9k,ath9k_hw
    videobuf2_vmalloc      13056  1 uvcvideo
    rtl8192c_common        48779  1 rtl8192cu
    snd_seq                61554  2 snd_seq_midi_event,snd_seq_midi
    videobuf2_memops       13202  1 videobuf2_vmalloc
    snd_seq_device         14497  3 snd_seq,snd_rawmidi,snd_seq_midi
    snd_timer              29425  2 snd_pcm,snd_seq
    mac_hid                13205  0 
    videobuf2_core         40513  1 uvcvideo
    mac80211              606411  4 ath9k,rtlwifi,rtl8192c_common,rtl8192cu
    r852                   18241  0 
    videodev              129260  2 uvcvideo,videobuf2_core
    ttm                    83187  0 
    sm_common              16860  1 r852
    snd                    68876  15 snd_hda_codec_realtek,snd_hwdep,snd_timer,snd_pcm,snd_seq,snd_rawmidi,snd_hda_codec,snd_hda_intel,snd_seq_device
    cfg80211              510937  4 ath,ath9k,mac80211,rtlwifi
    btusb                  18334  0 
    nand                   58949  2 r852,sm_common
    microcode              22881  0 
    nand_ecc               13273  1 nand
    psmouse                95870  0 
    drm_kms_helper         49394  0 
    drm                   286313  2 ttm,drm_kms_helper
    bluetooth             228619  22 bnep,btusb,rfcomm
    serio_raw              13215  0 
    i2c_algo_bit           13413  0 
    nand_bch               13147  1 nand
    bch                    17434  1 nand_bch
    nand_ids               12723  1 nand
    r592                   18019  0 
    mtd                    45202  2 nand,sm_common
    soundcore              12680  1 snd
    memstick               16554  1 r592
    sis_agp                13327  0 
    lp                     17759  0 
    parport                46345  3 lp,ppdev,parport_pc
    pata_acpi              13038  0 
    sdhci_pci              18590  0 
    sdhci                  32522  1 sdhci_pci
    firewire_ohci          40103  0 
    firewire_core          64508  1 firewire_ohci
    sata_sis               12823  2 
    sis190                 22625  0 
    crc_itu_t              12707  1 firewire_core
    
    
    
    mc837@Mc837-X71SL:~$ iwconfig
    
    wlan1     IEEE 802.11bgn  ESSID:off/any  
              Mode:Managed  Access Point: Not-Associated   Tx-Power=20 dBm   
              Retry  long limit:7   RTS thr=2347 B   Fragment thr:off
              Power Management:off
              
    eth0      no wireless extensions.
    
    lo        no wireless extensions.
    
    wlan0     IEEE 802.11bgn  ESSID:off/any  
              Mode:Managed  Access Point: Not-Associated   Tx-Power=16 dBm   
              Retry  long limit:7   RTS thr:off   Fragment thr:off
              Power Management:off
              
    
    
     mc837@Mc837-X71SL:~$ rfkill list
    
    0: hci0: Bluetooth
        Soft blocked: no
        Hard blocked: no
    1: phy0: Wireless LAN
        Soft blocked: no
        Hard blocked: no
    2: phy1: Wireless LAN
        Soft blocked: no
        Hard blocked: no
    
    
    
    mc837@Mc837-X71SL:~$ sudo iwlist scan
    
    wlan1     No scan results
    
    eth0      Interface doesn't support scanning.
    
    lo        Interface doesn't support scanning.
    
    wlan0     Scan completed :
              Cell 01 - Address: 00:0B:3B:22:87:6E
                        Channel:6
                        Frequency:2.437 GHz (Channel 6)
                        Quality=42/70  Signal level=-68 dBm  
                        Encryption key:off
                        ESSID:"devolo"
                        Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s
                        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
                        Mode:Master
                        Extra:tsf=0000002bc51579fe
                        Extra: Last beacon: 28ms ago
                        IE: Unknown: 00066465766F6C6F
                        IE: Unknown: 010482848B96
                        IE: Unknown: 030106
                        IE: Unknown: 2A0104
                        IE: Unknown: 32080C1218243048606C
              Cell 02 - Address: 00:1E:52:7C:16:D2
                        Channel:11
                        Frequency:2.462 GHz (Channel 11)
                        Quality=41/70  Signal level=-69 dBm  
                        Encryption key:on
                        ESSID:"Apple Network Paola"
                        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=000000927cf47e48
                        Extra: Last beacon: 28ms ago
                        IE: Unknown: 00134170706C65204E6574776F726B2050616F6C61
                        IE: Unknown: 010882848B960C121824
                        IE: Unknown: 03010B
                        IE: Unknown: 0706415420010D1E
                        IE: Unknown: 2A0100
                        IE: Unknown: 32043048606C
                        IE: IEEE 802.11i/WPA2 Version 1
                            Group Cipher : TKIP
                            Pairwise Ciphers (2) : CCMP TKIP
                            Authentication Suites (1) : PSK
                        IE: Unknown: 2D1A0C501BFFFF000000000000000000000000000000000000000000
                        IE: Unknown: 3D160B000400000000000000000000000000000000000000
                        IE: Unknown: 46050200010000
                        IE: WPA Version 1
                            Group Cipher : TKIP
                            Pairwise Ciphers (1) : TKIP
                            Authentication Suites (1) : PSK
                        IE: Unknown: DD180050F2020101010003A4000027A4000042435E0062322F00
                        IE: Unknown: DD0700039301690120
                        IE: Unknown: DD0E0017F20700010106001E527C16D2
                        IE: Unknown: DD0B0017F20100010100000003
              Cell 03 - Address: 00:90:D0:DB:F4:30
                        Channel:1
                        Frequency:2.412 GHz (Channel 1)
                        Quality=30/70  Signal level=-80 dBm  
                        Encryption key:on
                        ESSID:"WLan748FEB"
                        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=0000009278d4c354
                        Extra: Last beacon: 4120ms ago
                        IE: Unknown: 000A574C616E373438464542
                        IE: Unknown: 010882848B962430486C
                        IE: Unknown: 030101
                        IE: Unknown: 2A0100
                        IE: Unknown: 2F0100
                        IE: Unknown: 32040C121860
                        IE: Unknown: DD090010180200F0000000
                        IE: WPA Version 1
                            Group Cipher : TKIP
                            Pairwise Ciphers (1) : TKIP
                            Authentication Suites (1) : PSK
                        IE: Unknown: DD180050F2020101880003A4000027A4000042435E0062322F00
              Cell 04 - Address: 00:0B:3B:3E:67:00
                        Channel:6
                        Frequency:2.437 GHz (Channel 6)
                        Quality=29/70  Signal level=-81 dBm  
                        Encryption key:off
                        ESSID:"devolo"
                        Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s
                        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
                        Mode:Master
                        Extra:tsf=000000a44073215e
                        Extra: Last beacon: 680ms ago
                        IE: Unknown: 00066465766F6C6F
                        IE: Unknown: 010482848B96
                        IE: Unknown: 030106
                        IE: Unknown: 050400010000
                        IE: Unknown: 2A0104
                        IE: Unknown: 32080C1218243048606C
    Thanks again!

  4. #4
    Join Date
    Aug 2011
    Location
    Berlin, Germany
    Beans
    4,955
    Distro
    Xubuntu 12.04 Precise Pangolin

    Re: Laptop freezes when connecting to WiFi

    Try to update the rtl8188cus driver:
    Code:
    sudo apt-get install linux-headers-$(uname -r) linux-headers-generic build-essential dkms
    wget https://realtek-8188cus-wireless-drivers-3444749-ubuntu-1304.googlecode.com/files/rtl8192cu-tjp-dkms_1.6_all.deb
    sudo dpkg -i rtl8192cu*.deb
    echo -e "blacklist rtl8192cu\nblacklist rtl8192c_common\nblacklist rtlwifi" | sudo tee -a /etc/modprobe.d/blacklist.conf
    Reboot.

    Do you use a proprietary VGA driver?

    Edit: Please show:

    Code:
    lspci -nnk | grep -iA2 VGA
    Last edited by praseodym; May 12th, 2013 at 04:31 PM.

  5. #5
    Join Date
    Apr 2013
    Beans
    7

    Re: Laptop freezes when connecting to WiFi

    Trying to update the drivers now, difficult since ethernet is giving problems too now. Could I perhaps download the packages from my desktop and install them manually?

    Meanwhile, the VGA info.
    Code:
    mc837@Mc837-X71SL:~$ lspci -nnk | grep -iA2 VGA
    01:00.0 VGA compatible controller [0300]: NVIDIA Corporation G98 [GeForce 9300M GS] [10de:06e9] (rev a1)
        Subsystem: ASUSTeK Computer Inc. U6V laptop [1043:19b2]
    02:00.0 Network controller [0280]: Atheros Communications Inc. AR928X Wireless Network Adapter (PCI-Express) [168c:002a] (rev 01)
    Will update about the drivers ASAP.
    Last edited by Mc837; May 12th, 2013 at 08:27 PM.

  6. #6
    Join Date
    Aug 2011
    Location
    Berlin, Germany
    Beans
    4,955
    Distro
    Xubuntu 12.04 Precise Pangolin

    Re: Laptop freezes when connecting to WiFi

    Boot into the recovery mode with networking and install the VGA driver:
    Code:
    sudo apt-get install --reinstall linux-headers-$(uname -r) build-essential nvidia-current dkms
    Reboot.

  7. #7
    Join Date
    Apr 2013
    Beans
    7

    Re: Laptop freezes when connecting to WiFi

    Quote Originally Posted by praseodym View Post
    Code:
    sudo apt-get install linux-headers-$(uname -r) linux-headers-generic build-essential dkms
    wget https://realtek-8188cus-wireless-drivers-3444749-ubuntu-1304.googlecode.com/files/rtl8192cu-tjp-dkms_1.6_all.deb
    sudo dpkg -i rtl8192cu*.deb
     echo -e "blacklist rtl8192cu\nblacklist rtl8192c_common\nblacklist rtlwifi" | sudo tee -a /etc/modprobe.d/blacklist.conf
    Code:
    sudo apt-get install --reinstall linux-headers-$(uname -r) build-essential nvidia-current dkms
    Had to boot in recovery mode with generic display drivers AND networking, but managed to do all of the above. Rebooted and logged in and everything works perfectly now, a lot faster and responsive, and no freezing. Thank you so much!

  8. #8
    Join Date
    Aug 2011
    Location
    Berlin, Germany
    Beans
    4,955
    Distro
    Xubuntu 12.04 Precise Pangolin

    Re: Laptop freezes when connecting to WiFi

    Please check now:

    "uname -a"

  9. #9
    Join Date
    Apr 2013
    Beans
    7

    Re: Laptop freezes when connecting to WiFi

    Code:
    Linux Mc837-X71SL 3.8.0-19-generic #30-Ubuntu SMP Wed May 1 16:35:23 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux

  10. #10
    Join Date
    Aug 2011
    Location
    Berlin, Germany
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    Distro
    Xubuntu 12.04 Precise Pangolin

    Re: Laptop freezes when connecting to WiFi

    Ok, no need to do more.

    Have fun.

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