Bdtyktl

I am facing difficulties connecting to wifi on my Lenovo Flex 3 1480 laptop on Ubuntu 14.04. It works fine on Windows. I am attaching wireless-info.txt that I got from :
http://ubuntuforums.org/showthread.php?t=370108

########## wireless info START ##########



Report from: 25 Jan 2016 13:52 MST -0700

Booted last: 25 Jan 2016 13:47 MST -0700

Script from: 27 Sep 2015 00:34 UTC +0000



##### release ###########################



Distributor ID: Ubuntu

Description:    Ubuntu 14.04.3 LTS

Release:    14.04

Codename:   trusty



##### kernel ############################



Linux 3.19.0-49-generic #55~14.04.1-Ubuntu SMP Fri Jan 22 11:24:31 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux



Parameters: ro, quiet, splash, vt.handoff=7



##### desktop ###########################



sed: can't read /root/.dmrc: No such file or directory



Could not be determined.



##### lspci #############################



02:00.0 Network controller [0280]: Qualcomm Atheros Device [168c:0042] (rev 30)

    Subsystem: Lenovo Device [17aa:4035]



03:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev 15)

    Subsystem: Lenovo Device [17aa:3835]

    Kernel driver in use: r8169



##### lsusb #############################



Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub

Bus 001 Device 005: ID 0cf3:e360 Atheros Communications, Inc. 

Bus 001 Device 004: ID 04f3:2083 Elan Microelectronics Corp. 

Bus 001 Device 003: ID 5986:0670 Acer, Inc 

Bus 001 Device 002: ID 046d:c535 Logitech, Inc. 

Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub



##### PCMCIA card info ##################



##### rfkill ############################



0: hci0: Bluetooth

    Soft blocked: no

    Hard blocked: no



##### lsmod #############################



mac80211              638976  0 

cfg80211              532480  1 mac80211

compat                 28672  2 cfg80211,mac80211

ideapad_laptop         24576  0 

sparse_keymap          16384  1 ideapad_laptop

wmi                    20480  0 



##### interfaces ########################



auto lo

iface lo inet loopback



##### ifconfig ##########################



eth0      Link encap:Ethernet  HWaddr   

          inet addr:10.218.104.240  Bcast:10.218.111.255  Mask:255.255.248.0

          inet6 addr: fe80::/64 Scope:Link

          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1

          RX packets:8295 errors:0 dropped:0 overruns:0 frame:0

          TX packets:1212 errors:0 dropped:25 overruns:0 carrier:0

          collisions:0 txqueuelen:1000 

          RX bytes:1871640 (1.8 MB)  TX bytes:156822 (156.8 KB)



##### iwconfig ##########################



eth0      no wireless extensions.



lo        no wireless extensions.



##### route #############################



Kernel IP routing table

Destination     Gateway         Genmask         Flags Metric Ref    Use Iface

0.0.0.0         10.218.104.1    0.0.0.0         UG    0      0        0 eth0

10.218.104.0    0.0.0.0         255.255.248.0   U     1      0        0 eth0



##### resolv.conf #######################



nameserver 127.0.1.1

search cidse.dhcp.asu.edu



##### network managers ##################



Installed:



    NetworkManager



Running:



root      1017     1  0 13:47 ?        00:00:00 NetworkManager



##### NetworkManager info ###############



NetworkManager Tool



State: connected (global)



- Device: eth0  [Wired connection 1] -------------------------------------------

  Type:              Wired

  Driver:            r8169

  State:             connected

  Default:           yes

  HW Address:        



  Capabilities:

    Carrier Detect:  yes

    Speed:           1000 Mb/s



  Wired Properties

    Carrier:         on



  IPv4 Settings:

    Address:         10.218.104.240

    Prefix:          21 (255.255.248.0)

    Gateway:         10.218.104.1



    DNS:             129.219.17.200

    DNS:             129.219.17.5

    DNS:             129.219.13.81



##### NetworkManager.state ##############



[main]

NetworkingEnabled=true

WirelessEnabled=true

WWANEnabled=true

WimaxEnabled=true



##### NetworkManager.conf ###############



[main]

plugins=ifupdown,keyfile,ofono

dns=dnsmasq



[ifupdown]

managed=false



##### NetworkManager profiles ###########



[[/etc/NetworkManager/system-connections/Wi-Fi connection 1]] (600 root)

[connection] id=Wi-Fi connection 1 | type=802-11-wireless

[802-11-wireless] ssid=asu

[ipv6] method=auto

[ipv4] method=auto



##### iw reg get ########################



Region: America/Phoenix (based on set time zone)



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



##### iwlist channels ###################



eth0      no frequency information.



lo        no frequency information.



##### iwlist scan #######################



eth0      Interface doesn't support scanning.



lo        Interface doesn't support scanning.



##### module infos ######################



[mac80211]

filename:       /lib/modules/3.19.0-49-generic/updates/dkms/mac80211.ko

license:        GPL

description:    IEEE 802.11 subsystem

version:        backported from  () using backports 

srcversion:     BEF453E7AC487F911F8EDBF

depends:        cfg80211,compat

vermagic:       3.19.0-49-generic SMP mod_unload modversions 

parm:           max_nullfunc_tries:Maximum nullfunc tx tries before disconnecting (reason 4). (int)

parm:           max_probe_tries:Maximum probe tries before disconnecting (reason 4). (int)

parm:           beacon_loss_count:Number of beacon intervals before we decide beacon was lost. (int)

parm:           probe_wait_ms:Maximum time(ms) to wait for probe response before disconnecting (reason 4). (int)

parm:           ieee80211_default_rc_algo:Default rate control algorithm for mac80211 to use (charp)



[cfg80211]

filename:       /lib/modules/3.19.0-49-generic/updates/dkms/cfg80211.ko

version:        backported from  () using backports 

description:    wireless configuration support

license:        GPL

author:         Johannes Berg

srcversion:     F6775E4370E54D5795E4BE2

depends:        compat

vermagic:       3.19.0-49-generic SMP mod_unload modversions 

parm:           ieee80211_regdom:IEEE 802.11 regulatory domain code (charp)

parm:           cfg80211_disable_40mhz_24ghz:Disable 40MHz support in the 2.4GHz band (bool)



##### module parameters #################



[mac80211]

beacon_loss_count: 7

ieee80211_default_rc_algo: minstrel_ht

max_nullfunc_tries: 2

max_probe_tries: 5

probe_wait_ms: 500



[cfg80211]

cfg80211_disable_40mhz_24ghz: N

ieee80211_regdom: 00



##### /etc/modules ######################



lp

rtc



##### modprobe options ##################



[/etc/modprobe.d/ath10k_core.conf]

options ath10k_core skip_otp=y



[/etc/modprobe.d/ath10k-dkms.conf]

options ath10k_core skip_otp=1



[/etc/modprobe.d/ath9k.conf]

options ath9k nohwcrypt=1



[/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



[/etc/modprobe.d/blacklist-rare-network.conf]

alias net-pf-3 off

alias net-pf-6 off

alias net-pf-9 off

alias net-pf-11 off

alias net-pf-12 off

alias net-pf-19 off

alias net-pf-21 off

alias net-pf-36 off



[/etc/modprobe.d/iwlwifi.conf]

remove iwlwifi 

(/sbin/lsmod | grep -o -e ^iwlmvm -e ^iwldvm -e ^iwlwifi | xargs /sbin/rmmod) 

&& /sbin/modprobe -r mac80211



[/etc/modprobe.d/mlx4.conf]

softdep mlx4_core post: mlx4_en



##### rc.local ##########################



exit 0



##### pm-utils ##########################



##### udev rules ########################



[/etc/udev/rules.d/70-persistent-net.rules]

# PCI device 0x10ec:0x8168 (r8169)

SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="eth*", NAME="eth0"



##### dmesg #############################



[   13.723430] wl: module license 'MIXED/Proprietary' taints kernel.

[   13.725722] wl: disagrees about version of symbol wiphy_new_nm

[   13.725723] wl: Unknown symbol wiphy_new_nm (err -22)

[   13.725736] wl: disagrees about version of symbol wiphy_register

[   13.725737] wl: Unknown symbol wiphy_register (err -22)

[   13.725783] wl: disagrees about version of symbol wiphy_unregister

[   13.725784] wl: Unknown symbol wiphy_unregister (err -22)

[   13.725798] wl: disagrees about version of symbol __ieee80211_get_channel

[   13.725799] wl: Unknown symbol __ieee80211_get_channel (err -22)

[   13.725832] wl: disagrees about version of symbol wiphy_free

[   13.725833] wl: Unknown symbol wiphy_free (err -22)

[   14.123327] ath: disagrees about version of symbol wiphy_apply_custom_regulatory

[   14.123331] ath: Unknown symbol wiphy_apply_custom_regulatory (err -22)

[   14.123338] ath: disagrees about version of symbol __ieee80211_get_channel

[   14.123339] ath: Unknown symbol __ieee80211_get_channel (err -22)

[   14.123346] ath: disagrees about version of symbol freq_reg_info

[   14.123347] ath: Unknown symbol freq_reg_info (err -22)

[   21.831480] r8169 0000:03:00.0 eth0: link down

[   21.831527] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready

[   26.392468] r8169 0000:03:00.0 eth0: link up

[   26.392477] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready

[   51.394064] r8169 0000:03:00.0 eth0: link down (repeated 2 times)

[  120.582163] r8169 0000:03:00.0 eth0: link up



########## wireless info END ############

Please indicate why I am getting "network unclaimed". I have tried following the following, without any positive results. Ethernet works fine.

https://askubuntu.com/a/708103/497674
https://askubuntu.com/a/481221/497674

Edit 1: Adding dkms status

root@ankita-Flex-3-1480:/home/ankita# dkms status

backath10k, 2.0, 3.13.0-77-generic, x86_64: installed

backath10k, 2.0, 3.19.0-47-generic, x86_64: installed

backath10k, 2.0, 3.19.0-49-generic, x86_64: installed

bcmwl, 6.30.223.248+bdcom, 3.13.0-77-generic, x86_64: installed

bcmwl, 6.30.223.248+bdcom, 3.19.0-47-generic, x86_64: installed

bcmwl, 6.30.223.248+bdcom, 3.19.0-49-generic, x86_64: installed

root@ankita-Flex-3-1480:/home/ankita# sudo apt-get remove bcmwl-kernel-source broadcom-sta-common broadcom-sta-dkms

Reading package lists... Done

Building dependency tree       

Reading state information... Done

E: Unable to locate package broadcom-sta-common

E: Unable to locate package broadcom-sta-dkms

Thanks in advance

This issue was resolved using the comments posted by Jeremy31 in the question. Using sudo dkms remove backath10k/2.0 --all and rebooting.

First, I suggest you remove the incorrect and probably conflicting driver. At the terminal:

sudo apt-get purge bcmwl-kernel-source

Reboot and then run:

sudo modprobe ath10k_pci && dmesg | grep ath

Post the result and, depending on the outcome, I will further edit my answer to propose a solution.

The first link you gave is the correct method; however, it appears that something has gone wrong with the compile process. Let's see if we can fix it:

cd backports-20151120

make clean

make defconfig-wifi

make

sudo make install

sudo modprobe ath10k_pci

Any improvement? If not, reboot and post again:

dmesg | grep ath

This one solved my problem

sudo aptitude install linux-image-extra-4.4.0-43-generic

• You might want to check which is the latest version when you install it. (try typing until "image-extra-" and use the auto-complete with tab to find the latest)


• my hardware: intel wifi "Centrino Ultimate-N 6300" on lenovo x201

I've uploaded the installed OS using below Settings-> About This Computer -> Details -> Overview -> Install Update

This option will do necessary updates automatically and resolve all the issue