wireless network issue in ubuntu 14.04

[Madhavadas]

root@kolpadam-ubuntu-1:/home/kolpadam# nmcli nm
RUNNING STATE WIFI-HARDWARE WIFI WWAN-HARDWARE WWAN
running connected enabled enabled enabled disabled
root@kolpadam-ubuntu-1:/home/kolpadam# lspci -knn | grep Net -A2
02:00.0 Network controller [0280]: Intel Corporation Device [8086:24fb] (rev 10)
 Subsystem: Intel Corporation Device [8086:2110]

unable to connect to wireless access point.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: linux-image-3.13.0-121-generic 3.13.0-121.170
ProcVersionSignature: Ubuntu 3.13.0-121.170-generic 3.13.11-ckt39
Uname: Linux 3.13.0-121-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.24
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: kolpadam 1916 F.... pulseaudio
 /dev/snd/seq: timidity 1148 F.... timidity
Date: Sat Jun 24 17:11:23 2017
HibernationDevice: RESUME=UUID=4e5377b0-0756-4876-a7be-d9a6ea757e2d
InstallationDate: Installed on 2017-06-25 (-1 days ago)
InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
IwConfig:
 eth0 no wireless extensions.

 lo no wireless extensions.
Lsusb:
 Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
 Bus 001 Device 004: ID 0bda:0129 Realtek Semiconductor Corp. RTS5129 Card Reader Controller
 Bus 001 Device 003: ID 0bda:57b3 Realtek Semiconductor Corp.
 Bus 001 Device 002: ID 8087:0aa7 Intel Corp.
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: Acer Aspire ES1-572
ProcEnviron:
 LANGUAGE=en_IN:en
 TERM=xterm
 PATH=(custom, no user)
 LANG=en_IN
 SHELL=/bin/bash
ProcFB: 0 VESA VGA
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-121-generic root=UUID=dd3a845f-1b92-4a5f-b6f8-1641c0ca88b3 ro quiet splash vt.handoff=7
PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon.
RelatedPackageVersions:
 linux-restricted-modules-3.13.0-121-generic N/A
 linux-backports-modules-3.13.0-121-generic N/A
 linux-firmware 1.127.23
SourcePackage: linux
StagingDrivers: rts5139
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 11/02/2016
dmi.bios.vendor: Insyde Corp.
dmi.bios.version: V1.06
dmi.board.asset.tag: Type2 - Board Serial Number
dmi.board.name: T-Rex_SK
dmi.board.vendor: Acer
dmi.board.version: V1.06
dmi.chassis.type: 10
dmi.chassis.vendor: Acer
dmi.chassis.version: V1.06
dmi.modalias: dmi:bvnInsydeCorp.:bvrV1.06:bd11/02/2016:svnAcer:pnAspireES1-572:pvrV1.06:rvnAcer:rnT-Rex_SK:rvrV1.06:cvnAcer:ct10:cvrV1.06:
dmi.product.name: Aspire ES1-572
dmi.product.version: V1.06
dmi.sys.vendor: Acer

[Joseph Salisbury (jsalisbury)]

This change was made by a bot.

[Joseph Salisbury (jsalisbury)]

Did this issue start happening after an update/upgrade? Was there a prior kernel version where you were not having this particular problem?

Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v4.12 kernel[0].

If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'.

If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'.

Once testing of the upstream kernel is complete, please mark this bug as "Confirmed".

Thanks in advance.

[0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.12

[Launchpad Janitor (janitor)]

[Expired for linux (Ubuntu) because there has been no activity for 60 days.]