the problem got solved by inter changing configuration to various options
given in network edit . I change d to automatic to manual and then to local
links.. after opting to local links some local configuration appeared in
IPv4 section,, Here i changed /edited to my service provider's IP, net-mask
and dns server... LOL wifi now ok. Ubuntu 15-.04.

See i am not a technical person but have turned to a best driver for Ubuntu.

On 18 September 2015 at 15:07, Christopher M. Penalver <
<email address hidden>> wrote:

> govind, as this report is closed, it has nothing to do with your problem.
> If you want your issue addressed, please file a new report via a terminal:
> ubuntu-bug linux
>
> Please feel free to subscribe me to it.
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1442411
>
> Title:
>   Intel 3160 wireless card no longer able to connect to wifi networks
>
> Status in System76:
>   Fix Released
> Status in linux package in Ubuntu:
>   Fix Released
> Status in linux source package in Vivid:
>   Fix Released
>
> Bug description:
>   [Impact]
>
>   Laptop: Lenovo Y70 Touch
>   Wireless Card: Intel Corporation Wireless 3160 (rev 93)
>
>   When running Ubuntu Gnome 14.10 (on a live USB drive) I am able to
>   connect to wifi networks without any issue. When running Ubuntu Gnome
>   15.04 (either on live USB or installed and fully updated) I am able to
>   see the list of available wifi networks, but not able to connect.
>   Selecting one and entering the password makes the network manager
>   applet indicate that it is "Connecting..." but then it gives up after
>   about a minute or so and reverts back to "Not Connected". I have
>   tested this without network encryption as well, and the same result
>   occurs.
>
>   [Test Case]
>
>   I have ran a wifi debugging script, here is the output:
>
>   For Ubuntu 14.10 - http://pastebin.com/aLUhTyrM
>   For Ubuntu 15.04 - http://pastebin.com/f0yRjQUC
>
>   Again, the card seems to work perfectly on 14.10, but is unable to
>   connect to any networks on 15.04.
>
>   [Fix]
>
>   commit afcee962b09842d0f4191beb4a2d08251b4c7705 upstream
>
>   [Workaround]
>
>   Boot with bluetooth turned off. If the computer boots with the
>   bluetooth turned on, the wifi will not work, even if you first turn
>   off the bluetooth. A restart is needed.
>
>   ---
>   ApportVersion: 2.17-0ubuntu2
>   Architecture: amd64
>   AudioDevicesInUse:
>    USER        PID ACCESS COMMAND
>    /dev/snd/controlC0:  mboratko   1609 F.... pulseaudio
>    /dev/snd/controlC1:  mboratko   1609 F.... pulseaudio
>   CurrentDesktop: GNOME
>   DistroRelease: Ubuntu 15.04
>   EcryptfsInUse: Yes
>   InstallationDate: Installed on 2015-04-10 (0 days ago)
>   InstallationMedia: Ubuntu-GNOME 15.04 "Vivid Vervet" - Beta amd64
> (20150326)
>   MachineType: LENOVO 80DU
>   Package: linux (not installed)
>   ProcEnviron:
>    TERM=xterm
>    PATH=(custom, no user)
>    XDG_RUNTIME_DIR=<set>
>    LANG=en_US.UTF-8
>    SHELL=/bin/bash
>   ProcFB: 0 inteldrmfb
>   ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-12-generic.efi.signed
> root=UUID=0fb46cba-f7ac-4bc5-aa7d-5f6aa74636c1 ro quiet splash vt.handoff=7
>   ProcVersionSignature: Ubuntu 3.19.0-12.12-generic 3.19.3
>   RelatedPackageVersions:
>    linux-restricted-modules-3.19.0-12-generic N/A
>    linux-backports-modules-3.19.0-12-generic  N/A
>    linux-firmware                             1.143
>   Tags:  vivid
>   UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev'
>   Uname: Linux 3.19.0-12-generic x86_64
>   UpgradeStatus: No upgrade log present (probably fresh install)
>   UserGroups: adm bumblebee cdrom dip lpadmin plugdev sambashare sudo
>   _MarkForUpload: True
>   dmi.bios.date: 02/11/2015
>   dmi.bios.vendor: LENOVO
>   dmi.bios.version: 9ECN37WW(V2.01)
>   dmi.board.asset.tag: 31900058WIN
>   dmi.board.name: Lenovo Y70-70 Touch
>   dmi.board.vendor: LENOVO
>   dmi.board.version: 31900058WIN
>   dmi.chassis.asset.tag: 31900058WIN
>   dmi.chassis.type: 10
>   dmi.chassis.vendor: LENOVO
>   dmi.chassis.version: Lenovo Y70-70 Touch
>   dmi.modalias:
> dmi:bvnLENOVO:bvr9ECN37WW(V2.01):bd02/11/2015:svnLENOVO:pn80DU:pvrLenovoY70-70Touch:rvnLENOVO:rnLenovoY70-70Touch:rvr31900058WIN:cvnLENOVO:ct10:cvrLenovoY70-70Touch:
>   dmi.product.name: 80DU
>   dmi.product.version: Lenovo Y70-70 Touch
>   dmi.sys.vendor: LENOVO
>
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