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Thread: Wireless problems after software update

  1. #1
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    Wireless problems after software update

    I am new to ubuntu and just recently downloaded it on my computer, had a friend install the drivers for me and everything was running flawlessly. Then i got a notification to "update software" and once the computer restarted I lost my ability to connect with the internet through wifi. I'm pretty sure that the computer wont even recognize that i have a wireless band. My computer is a lenovo yogapad 13


    Any help is greatly appreciated. Thanks.
    Last edited by cahmadi26; March 7th, 2014 at 09:36 AM.

  2. #2
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    Re: Wireless problems after software update

    Welcome to the forums cahmadi26 !

    Please follow the "Wireless Script" link in my signature, download and run the script as per instructions there, and post back the report it generates. It will give us all the relevant info to help determine and solve the problem.

    While posting the outputs, please use 'Code' tags. It preserves the output's formatting and makes the post cleaner, compact and more readable. To see a quick 'HowTo' with screenshots, please follow the "Using Code Tags" link in my signature.
    Varun
    Help others by marking threads as [SOLVED], if they are. (See how)
    Wireless Script | Use Code Tags

  3. #3
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    Re: Wireless problems after software update

    I wasn't sure if you wanted all of this but here it is. Thanks for the help.


    The output of code:
    wget -N -t 5 -T 10 http://dl.dropbox.com/u/57264241/wireless_script && chmod +x wireless_script && ./wireless_script
    Code:
    *************** info trace ***************
    
    
    ***** uname -a *****
    
    
    Linux cyrus-Lenovo-IdeaPad-Yoga-13 3.11.0-18-generic #32-Ubuntu SMP Tue Feb 18 21:11:14 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux
    
    
    ***** lsb_release *****
    
    
    Distributor ID:    Ubuntu
    Description:    Ubuntu 13.10
    Release:    13.10
    Codename:    saucy
    
    
    ***** lspci *****
    
    
    
    
    ***** lsusb *****
    
    
    Bus 002 Device 004: ID 5986:029c Acer, Inc 
    Bus 002 Device 003: ID 2047:0855 Texas Instruments 
    Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
    Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
    Bus 001 Device 006: ID 04f3:000a Elan Microelectronics Corp. 
    Bus 001 Device 005: ID 0bda:1724 Realtek Semiconductor Corp. 
    Bus 001 Device 004: ID 0bda:0129 Realtek Semiconductor Corp. RTS5129 Card Reader Controller
    Bus 001 Device 003: ID 0b95:7720 ASIX Electronics Corp. AX88772
    Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
    Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
    Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
    Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
    
    
    ***** PCMCIA Card Info *****
    
    
    
    
    ***** iwconfig *****
    
    
    
    
    ***** rfkill *****
    
    
    0: ideapad_wlan: Wireless LAN
        Soft blocked: no
        Hard blocked: no
    1: ideapad_bluetooth: Bluetooth
        Soft blocked: no
        Hard blocked: no
    
    
    ***** iw reg get *****
    
    
    country 00:
        (2402 - 2472 @ 40), (3, 20)
        (2457 - 2482 @ 40), (3, 20), PASSIVE-SCAN, NO-IBSS
        (2474 - 2494 @ 20), (3, 20), NO-OFDM, PASSIVE-SCAN, NO-IBSS
        (5170 - 5250 @ 40), (3, 20), PASSIVE-SCAN, NO-IBSS
        (5735 - 5835 @ 40), (3, 20), PASSIVE-SCAN, NO-IBSS
    
    
    ***** route -n *****
    
    
    Kernel IP routing table
    Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
    0.0.0.0         144.118.239.254 0.0.0.0         UG    0      0        0 eth0
    144.118.224.0   0.0.0.0         255.255.240.0   U     1      0        0 eth0
    
    
    ***** lsmod *****
    
    
    rtl8192cu              67723  0 
    rtl_usb                18448  1 rtl8192cu
    rtlwifi                63229  2 rtl_usb,rtl8192cu
    rtl8192c_common        49527  1 rtl8192cu
    mac80211              597268  3 rtl_usb,rtlwifi,rtl8192cu
    cfg80211              480503  2 mac80211,rtlwifi
    
    
    ***** nm-tool *****
    
    
    NetworkManager Tool
    
    
    State: connected (global)
    
    
    - Device: eth0  [Wired connection 1] -------------------------------------------
      Type:              Wired
      Driver:            asix
      State:             connected
      Default:           yes
      HW Address:        <MAC address removed>
    
    
      Capabilities:
        Carrier Detect:  yes
        Speed:           100 Mb/s
    
    
      Wired Properties
        Carrier:         on
    
    
      IPv4 Settings:
        Address:         144.118.225.67
        Prefix:          20 (255.255.240.0)
        Gateway:         144.118.239.254
    
    
        DNS:             144.118.24.20
        DNS:             144.118.24.10
    
    
    
    
    
    
    ***** NetworkManager.state *****
    [main]
    NetworkingEnabled=true
    WirelessEnabled=true
    WWANEnabled=true
    WimaxEnabled=true
    
    
    ***** NetworkManager.conf *****
    
    
    [main]
    plugins=ifupdown,keyfile,ofono
    dns=dnsmasq
    
    
    [ifupdown]
    managed=false
    
    
    ***** interfaces *****
    
    
    # interfaces(5) file used by ifup(8) and ifdown(8)
    auto lo
    iface lo inet loopback
    
    
    ***** iwlist *****
    
    
    
    
    ***** resolv.conf *****
    
    
    nameserver 127.0.1.1
    search resnet.drexel.edu
    
    
    ***** blacklist *****
    
    
    [/etc/modprobe.d/blacklist-ath_pci.conf]
    blacklist ath_pci
    
    
    [/etc/modprobe.d/blacklist-bcm43.conf]
    blacklist b43
    blacklist b43legacy
    blacklist ssb
    blacklist bcm43xx
    blacklist brcm80211
    blacklist brcmfmac
    blacklist brcmsmac
    blacklist bcma
    
    
    [/etc/modprobe.d/blacklist.conf]
    blacklist evbug
    blacklist usbmouse
    blacklist usbkbd
    blacklist eepro100
    blacklist de4x5
    blacklist eth1394
    blacklist snd_intel8x0m
    blacklist snd_aw2
    blacklist i2c_i801
    blacklist prism54
    blacklist bcm43xx
    blacklist garmin_gps
    blacklist asus_acpi
    blacklist snd_pcsp
    blacklist pcspkr
    blacklist amd76x_edac
    
    
    ***** modinfo *****
    
    
    filename:       /lib/modules/3.11.0-18-generic/kernel/drivers/net/wireless/rtlwifi/rtl8192cu/rtl8192cu.ko
    firmware:       rtlwifi/rtl8192cufw_TMSC.bin
    firmware:       rtlwifi/rtl8192cufw_B.bin
    firmware:       rtlwifi/rtl8192cufw_A.bin
    firmware:       rtlwifi/rtl8192cufw.bin
    description:    Realtek 8192C/8188C 802.11n USB wireless
    license:        GPL
    author:         Larry Finger    <Larry.Finger@lwfinger.net>
    author:         Ziv Huang    <ziv_huang@realtek.com>
    author:         Georgia        <georgia@realtek.com>
    srcversion:     6BD4434FB2415C434F73006
    alias:          usb:v7392p7822d*dc*dsc*dp*ic*isc*ip*in*
    alias:          usb:v2357p0100d*dc*dsc*dp*ic*isc*ip*in*
    alias:          usb:v20F4p624Dd*dc*dsc*dp*ic*isc*ip*in*
    alias:          usb:v2019pAB2Bd*dc*dsc*dp*ic*isc*ip*in*
    alias:          usb:v2001p330Ad*dc*dsc*dp*ic*isc*ip*in*
    alias:          usb:v2001p3309d*dc*dsc*dp*ic*isc*ip*in*
    alias:          usb:v2001p3307d*dc*dsc*dp*ic*isc*ip*in*
    alias:          usb:v0E66p0019d*dc*dsc*dp*ic*isc*ip*in*
    alias:          usb:v0DF6p0061d*dc*dsc*dp*ic*isc*ip*in*
    alias:          usb:v0BDAp8186d*dc*dsc*dp*ic*isc*ip*in*
    alias:          usb:v0B05p17ABd*dc*dsc*dp*ic*isc*ip*in*
    alias:          usb:v0846pF001d*dc*dsc*dp*ic*isc*ip*in*
    alias:          usb:v0846p9021d*dc*dsc*dp*ic*isc*ip*in*
    alias:          usb:v07B8p8178d*dc*dsc*dp*ic*isc*ip*in*
    alias:          usb:v07AAp0056d*dc*dsc*dp*ic*isc*ip*in*
    alias:          usb:v0586p341Fd*dc*dsc*dp*ic*isc*ip*in*
    alias:          usb:v050Dp2103d*dc*dsc*dp*ic*isc*ip*in*
    alias:          usb:v050Dp2102d*dc*dsc*dp*ic*isc*ip*in*
    alias:          usb:v050Dp1004d*dc*dsc*dp*ic*isc*ip*in*
    alias:          usb:v2019p1201d*dc*dsc*dp*ic*isc*ip*in*
    alias:          usb:v04F2pAFFCd*dc*dsc*dp*ic*isc*ip*in*
    alias:          usb:v04F2pAFFBd*dc*dsc*dp*ic*isc*ip*in*
    alias:          usb:v04F2pAFF8d*dc*dsc*dp*ic*isc*ip*in*
    alias:          usb:v04F2pAFFAd*dc*dsc*dp*ic*isc*ip*in*
    alias:          usb:v04F2pAFF9d*dc*dsc*dp*ic*isc*ip*in*
    alias:          usb:v04F2pAFF7d*dc*dsc*dp*ic*isc*ip*in*
    alias:          usb:v0BDAp317Fd*dc*dsc*dp*ic*isc*ip*in*
    alias:          usb:v9846p9041d*dc*dsc*dp*ic*isc*ip*in*
    alias:          usb:v4855p0091d*dc*dsc*dp*ic*isc*ip*in*
    alias:          usb:v4855p0090d*dc*dsc*dp*ic*isc*ip*in*
    alias:          usb:v13D3p3359d*dc*dsc*dp*ic*isc*ip*in*
    alias:          usb:v13D3p3358d*dc*dsc*dp*ic*isc*ip*in*
    alias:          usb:v7392p7811d*dc*dsc*dp*ic*isc*ip*in*
    alias:          usb:v20F4p648Bd*dc*dsc*dp*ic*isc*ip*in*
    alias:          usb:v2019pED17d*dc*dsc*dp*ic*isc*ip*in*
    alias:          usb:v2019pAB2Ed*dc*dsc*dp*ic*isc*ip*in*
    alias:          usb:v2019pAB2Ad*dc*dsc*dp*ic*isc*ip*in*
    alias:          usb:v2019p4902d*dc*dsc*dp*ic*isc*ip*in*
    alias:          usb:v2001p3308d*dc*dsc*dp*ic*isc*ip*in*
    alias:          usb:v13D3p3357d*dc*dsc*dp*ic*isc*ip*in*
    alias:          usb:v103Cp1629d*dc*dsc*dp*ic*isc*ip*in*
    alias:          usb:v4856p0091d*dc*dsc*dp*ic*isc*ip*in*
    alias:          usb:v0EB0p9071d*dc*dsc*dp*ic*isc*ip*in*
    alias:          usb:v0DF6p0077d*dc*dsc*dp*ic*isc*ip*in*
    alias:          usb:v0DF6p005Cd*dc*dsc*dp*ic*isc*ip*in*
    alias:          usb:v0DF6p0052d*dc*dsc*dp*ic*isc*ip*in*
    alias:          usb:v0BDAp5088d*dc*dsc*dp*ic*isc*ip*in*
    alias:          usb:v0846p9041d*dc*dsc*dp*ic*isc*ip*in*
    alias:          usb:v07B8p8189d*dc*dsc*dp*ic*isc*ip*in*
    alias:          usb:v07B8p8188d*dc*dsc*dp*ic*isc*ip*in*
    alias:          usb:v06F8pE033d*dc*dsc*dp*ic*isc*ip*in*
    alias:          usb:v050Dp11F2d*dc*dsc*dp*ic*isc*ip*in*
    alias:          usb:v050Dp1102d*dc*dsc*dp*ic*isc*ip*in*
    alias:          usb:v0BDAp817Cd*dc*dsc*dp*ic*isc*ip*in*
    alias:          usb:v0BDAp8178d*dc*dsc*dp*ic*isc*ip*in*
    alias:          usb:v0BDAp8754d*dc*dsc*dp*ic*isc*ip*in*
    alias:          usb:v0BDAp819Ad*dc*dsc*dp*ic*isc*ip*in*
    alias:          usb:v0BDAp818Ad*dc*dsc*dp*ic*isc*ip*in*
    alias:          usb:v0BDAp817Fd*dc*dsc*dp*ic*isc*ip*in*
    alias:          usb:v0BDAp817Ed*dc*dsc*dp*ic*isc*ip*in*
    alias:          usb:v0BDAp817Dd*dc*dsc*dp*ic*isc*ip*in*
    alias:          usb:v0BDAp817Bd*dc*dsc*dp*ic*isc*ip*in*
    alias:          usb:v0BDAp817Ad*dc*dsc*dp*ic*isc*ip*in*
    alias:          usb:v0BDAp8177d*dc*dsc*dp*ic*isc*ip*in*
    alias:          usb:v0BDAp8176d*dc*dsc*dp*ic*isc*ip*in*
    alias:          usb:v0BDAp8170d*dc*dsc*dp*ic*isc*ip*in*
    alias:          usb:v0BDAp018Ad*dc*dsc*dp*ic*isc*ip*in*
    alias:          usb:v0BDAp8191d*dc*dsc*dp*ic*isc*ip*in*
    depends:        rtlwifi,rtl8192c-common,rtl_usb,mac80211
    intree:         Y
    vermagic:       3.11.0-18-generic SMP mod_unload modversions 
    parm:           swenc:Set to 1 for software crypto (default 0)
     (bool)
    parm:           debug:Set debug level (0-5) (default 0) (int)
    
    
    filename:       /lib/modules/3.11.0-18-generic/kernel/drivers/net/wireless/rtlwifi/rtl_usb.ko
    description:    USB basic driver for rtlwifi
    license:        GPL
    author:         Larry Finger    <Larry.FInger@lwfinger.net>
    author:         Realtek WlanFAE    <wlanfae@realtek.com>
    author:         lizhaoming    <chaoming_li@realsil.com.cn>
    srcversion:     869111DAE2B855A98C64397
    depends:        rtlwifi,mac80211
    intree:         Y
    vermagic:       3.11.0-18-generic SMP mod_unload modversions 
    
    
    filename:       /lib/modules/3.11.0-18-generic/kernel/drivers/net/wireless/rtlwifi/rtlwifi.ko
    description:    Realtek 802.11n PCI wireless core
    license:        GPL
    author:         Larry Finger    <Larry.FInger@lwfinger.net>
    author:         Realtek WlanFAE    <wlanfae@realtek.com>
    author:         lizhaoming    <chaoming_li@realsil.com.cn>
    srcversion:     9985D829F92712EC7AE7D4E
    depends:        mac80211,cfg80211
    intree:         Y
    vermagic:       3.11.0-18-generic SMP mod_unload modversions 
    
    
    filename:       /lib/modules/3.11.0-18-generic/kernel/drivers/net/wireless/rtlwifi/rtl8192c/rtl8192c-common.ko
    description:    Realtek 8192C/8188C 802.11n PCI wireless
    license:        GPL
    author:         Larry Finger    <Larry.Finger@lwfinger.net>
    author:         Ziv Huang    <ziv_huang@realtek.com>
    author:         Georgia        <georgia@realtek.com>
    author:         Realtek WlanFAE    <wlanfae@realtek.com>
    author:         lizhaoming    <chaoming_li@realsil.com.cn>
    srcversion:     D6221EBE7F9AFB5C639D02D
    depends:        
    intree:         Y
    vermagic:       3.11.0-18-generic SMP mod_unload modversions 
    
    
    
    
    ***** udev rules *****
    
    
    # USB device 0x:0x (rtl8723au)
    SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="<MAC address removed>", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="wlan*", NAME="wlan0"
    
    
    # USB device 0x:0x (asix)
    SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="<MAC address removed>", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="eth*", NAME="eth0"
    
    
    ***** dmesg *****
    
    
    
    
    ****************** done ******************

  4. #4
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    Ubuntu 12.04 Precise Pangolin

    Re: Wireless problems after software update

    Yes I do need the complete output, and if the above one IS the complete output, there is something seriously wrong with the update that happened.

    The lspci part being empty (unless you missed it while 'selectively' copy-pasting) indicates a possible broken update.

    As for the wireless part, you seem to have currently loaded a wrong driver "rtl8192cu" for it. Did you use an external USB adapter? If not, that is something that you or your friend may have done while trying random suggestions.

    Anyway, from what I can see from the output, you need a very new driver which is neither in the kernel, nor on Realtek's official website. You'll have to follow this procedure to download and install it : http://askubuntu.com/a/358479 (Thanks to david, @ askubuntu)

    And you'll have to repeat the installation part EveryTime your kernel is upgraded, until the driver is included in kernel itself.

    Try the procedure in the given link, and if you get any errors, post back the error you get.

    If the installation goes smoothly, you may additionally need to remove the driver rtl8192cu if it is somehow forced to load automatically. Post back how it goes, and we'll sort it out as and if required.
    Last edited by varunendra; March 12th, 2014 at 01:52 AM.
    Varun
    Help others by marking threads as [SOLVED], if they are. (See how)
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  5. #5
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    Re: Wireless problems after software update

    It works again! thank you so much. Do you still recommend that I remove the other driver?

  6. #6
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    Re: Wireless problems after software update

    You're welcome!

    Quote Originally Posted by cahmadi26 View Post
    Do you still recommend that I remove the other driver?
    Yes, please do so if you have done something to 'force' load it (like adding it to /etc/modules or /etc/rc.local files). If there are no devices that need it, it *may* conflict with the driver that is actually needed and is being used. Loading multiple drivers sharing same resources is never a good idea unless necessary.

    And if a device really needs the other driver (rtl8192cu), it will load automatically when needed.

    That being said, of course it is not necessary if things are working and you are not very sure of what you'd be doing to remove the other driver. But in case of problems, do it the first thing.
    Varun
    Help others by marking threads as [SOLVED], if they are. (See how)
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  7. #7
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    Re: Wireless problems after software update

    Super helpful, thanks, also worked for me.

  8. #8
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    Re: Wireless problems after software update

    All credits go to the nice post by David @ AskUbuntu.
    Varun
    Help others by marking threads as [SOLVED], if they are. (See how)
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  9. #9
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    Re: Wireless problems after software update

    ok, so 1 problem though, now it seems to randomly drop the wifi connection, if I turn it off and back on it will work fine, until it drops again. If I remove the rtl8192 module, the wifi goes with it.
    Last edited by Murdoc_of_puts; March 12th, 2014 at 05:13 PM.

  10. #10
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    Re: Wireless problems after software update

    Quote Originally Posted by Murdoc_of_puts View Post
    ok, so 1 problem though, now it seems to randomly drop the wifi connection, if I turn it off and back on it will work fine, until it drops again. If I remove the rtl8192 module, the wifi goes with it.
    I wouldn't expect too much from an experimental driver, but perhaps you should post a new thread of your own with a detailed description of the problem and whatever you have tried. Along with the description, also post the "wireless_script" report for technical details.

    Feel free to post a link to it here or PM me (or other potential helpers) to take a look at it. Maybe we could try some further tweaks to make it work better.
    Varun
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