Wireless is not working in laptop DV-6 6120TX

Hi,

There are lots of things that can cause Wifi problems. Follow the instructions at the link below and if your are still having problems copy and paste all the results back here. Its a lot of information, don't worry if you can't understand it all. Somebody here will and we can usually help.

Can you also let us know if you are trying Ubuntu out on a Live CD etc, or if Ubuntu is installed on your hard drive.

https://help.ubuntu.com/community/WirelessTroubleshootingProcedure

Thanks for reply Warren..
 I copy and paste all the commands given in step 2 of the link provided by you
and after completing step no.#. i created a new qus.. here outup of all the commands provided too
https://answers.launchpad.net/ubuntu/+source/gnome-nettool/+question/206408
please tell me what to do next.. so that i can solve my problem...

There was no need to open a new question. You could have pasted the results back here,

I note that the problem is with your broadcom Wifi card and that actionparsnip has already solved the problem for you in question #206407.

Please mark this and question #206408 which is a duplicate #206407 as solved unless you have any further issues.

Actually that problem is not solved... by mistake i created two new question of same terminal output.... then action suggested me to remove 1 question... i don't know how to remove that's why i marked it as solved..
but problem remain same... please suggest me what should i do now.. so that i can get my wireless back

Ouput of all the commands given in Step-2 of the provided link
https://help.ubuntu.com/community/WirelessTroubleshootingProcedure
I am using Only ubuntu 12.04 as OS. It's installed in my hdd(640gb) space

Unpacking libhd16 (from .../libhd16_16.0-2.1_amd64.deb) ...
Selecting previously unselected package hwinfo.
Unpacking hwinfo (from .../hwinfo_16.0-2.1_amd64.deb) ...
Processing triggers for man-db ...
Setting up libhal1 (0.5.14-8) ...
Setting up libhd16 (16.0-2.1) ...
Setting up hwinfo (16.0-2.1) ...
Processing triggers for libc-bin ...
ldconfig deferred processing now taking place
shravan@mama:~$ sudo lshw -C network; rfkill list
  *-network
       description: Ethernet interface
       product: RTL8111/8168B PCI Express Gigabit Ethernet controller
       vendor: Realtek Semiconductor Co., Ltd.
       physical id: 0
       bus info: pci@0000:07:00.0
       logical name: eth0
       version: 06
       serial: 2c:27:d7:bb:ed:e8
       size: 1Gbit/s
       capacity: 1Gbit/s
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=full firmware=rtl8168e-3_0.0.4 03/27/12 ip=10.102.43.148 latency=0 link=yes multicast=yes port=MII speed=1Gbit/s
       resources: irq:47 ioport:4000(size=256) memory:c0404000-c0404fff memory:c0400000-c0403fff
  *-network
       description: Wireless interface
       product: BCM4313 802.11b/g/n Wireless LAN Controller
       vendor: Broadcom Corporation
       physical id: 0
       bus info: pci@0000:0d:00.0
       logical name: eth1
       version: 01
       serial: cc:52:af:95:b0:5d
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=wl1 driverversion=5.100.82.38 latency=0 multicast=yes wireless=IEEE 802.11
       resources: irq:17 memory:c4500000-c4503fff
1: hp-wifi: Wireless LAN
 Soft blocked: no
 Hard blocked: no
2: hp-bluetooth: Bluetooth
 Soft blocked: no
 Hard blocked: no
4: brcmwl-1: Wireless LAN
 Soft blocked: no
 Hard blocked: no
6: hci0: Bluetooth
 Soft blocked: no
 Hard blocked: no
shravan@mama:~$ sudo lwlist scanning
sudo: lwlist: command not found
shravan@mama:~$ sudo iwlist scanning
lo Interface doesn't support scanning.

eth1 No scan results

eth0 Interface doesn't support scanning.

shravan@mama:~$ cat /etc/network/interfaces
auto lo
iface lo inet loopback

shravan@mama:~$ cat /etc/lsb-release
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=12.04
DISTRIB_CODENAME=precise
DISTRIB_DESCRIPTION="Ubuntu 12.04.1 LTS"
shravan@mama:~$ lspci -nn
00:00.0 Host bridge [0600]: Intel Corporation 2nd Generation Core Processor Family DRAM Controller [8086:0104] (rev 09)
00:01.0 PCI bridge [0604]: Intel Corporation Xeon E3-1200/2nd Generation Core Processor Family PCI Express Root Port [8086:0101] (rev 09)
00:02.0 VGA compatible controller [0300]: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller [8086:0116] (rev 09)
00:16.0 Communication controller [0780]: Intel Corporation 6 Series/C200 Series Chipset Family MEI Controller #1 [8086:1c3a] (rev 04)
00:1a.0 USB controller [0c03]: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #2 [8086:1c2d] (rev 05)
00:1b.0 Audio device [0403]: Intel Corporation 6 Series/C200 Series Chipset Family High Definition Audio Controller [8086:1c20] (rev 05)
00:1c.0 PCI bridge [0604]: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 1 [8086:1c10] (rev b5)
00:1c.1 PCI bridge [0604]: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 2 [8086:1c12] (rev b5)
00:1c.2 PCI bridge [0604]: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 3 [8086:1c14] (rev b5)
00:1c.3 PCI bridge [0604]: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 4 [8086:1c16] (rev b5)
00:1d.0 USB controller [0c03]: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #1 [8086:1c26] (rev 05)
00:1f.0 ISA bridge [0601]: Intel Corporation HM65 Express Chipset Family LPC Controller [8086:1c49] (rev 05)
00:1f.2 SATA controller [0106]: Intel Corporation 6 Series/C200 Series Chipset Family 6 port SATA AHCI Controller [8086:1c03] (rev 05)
00:1f.3 SMBus [0c05]: Intel Corporation 6 Series/C200 Series Chipset Family SMBus Controller [8086:1c22] (rev 05)
01:00.0 VGA compatible controller [0300]: Advanced Micro Devices [AMD] nee ATI Seymour [Radeon HD 6400M Series] [1002:6760]
07:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller [10ec:8168] (rev 06)
0d:00.0 Network controller [0280]: Broadcom Corporation BCM4313 802.11b/g/n Wireless LAN Controller [14e4:4727] (rev 01)
13:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. RTS5116 PCI Express Card Reader [10ec:5209] (rev 01)
19:00.0 USB controller [0c03]: NEC Corporation uPD720200 USB 3.0 Host Controller [1033:0194] (rev 04)
shravan@mama:~$ lsusb
Bus 003 Device 002: ID 045e:0745 Microsoft Corp. Nano Transceiver v1.0 for Bluetooth
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 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 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 001 Device 003: ID 138a:0018 Validity Sensors, Inc.
Bus 001 Device 004: ID 064e:e258 Suyin Corp.
Bus 002 Device 004: ID 0a5c:21b4 Broadcom Corp. BCM2070 Bluetooth 2.1 + EDR
shravan@mama:~$ sudo lshw -short
H/W path Device Class Description
=============================================================
                                   system HP Pavilion dv6 Notebook PC (Q
/0 bus 1656
/0/0 memory 1MiB BIOS
/0/11 memory 4GiB System Memory
/0/11/0 memory DIMM [empty]
/0/11/1 memory 4GiB SODIMM DDR3 Synchronous 1
/0/19 processor Intel(R) Core(TM) i5-2410M CPU
/0/19/1b memory 32KiB L1 cache
/0/19/1c memory 256KiB L2 cache
/0/19/1d memory 3MiB L3 cache
/0/1a memory 32KiB L1 cache
/0/100 bridge 2nd Generation Core Processor
/0/100/1 bridge Xeon E3-1200/2nd Generation Co
/0/100/1/0 display Seymour [Radeon HD 6400M Serie
/0/100/2 display 2nd Generation Core Processor
/0/100/16 communication 6 Series/C200 Series Chipset F
/0/100/1a bus 6 Series/C200 Series Chipset F
/0/100/1b multimedia 6 Series/C200 Series Chipset F
/0/100/1c bridge 6 Series/C200 Series Chipset F
/0/100/1c/0 eth0 network RTL8111/8168B PCI Express Giga
/0/100/1c.1 bridge 6 Series/C200 Series Chipset F
/0/100/1c.1/0 eth1 network BCM4313 802.11b/g/n Wireless L
/0/100/1c.2 bridge 6 Series/C200 Series Chipset F
/0/100/1c.2/0 scsi6 generic RTS5116 PCI Express Card Reade
/0/100/1c.2/0/0.0.0 /dev/sdb disk xD/SD/M.S.
/0/100/1c.2/0/0.0.0/0 /dev/sdb disk
/0/100/1c.3 bridge 6 Series/C200 Series Chipset F
/0/100/1c.3/0 bus uPD720200 USB 3.0 Host Control
/0/100/1d bus 6 Series/C200 Series Chipset F
/0/100/1f bridge HM65 Express Chipset Family LP
/0/100/1f.2 scsi0 storage 6 Series/C200 Series Chipset F
/0/100/1f.2/0 /dev/sda disk 640GB TOSHIBA MK6465GS
/0/100/1f.2/0/1 /dev/sda1 volume 592GiB EXT4 volume
/0/100/1f.2/0/2 /dev/sda2 volume 4043MiB Extended partition
/0/100/1f.2/0/2/5 /dev/sda5 volume 4043MiB Linux swap / Solaris p
/0/100/1f.2/1 /dev/cdrom disk DVD RW AD-7721H
/0/100/1f.3 bus 6 Series/C200 Series Chipset F
/1 power MU06055
shravan@mama:~$ uname -a
Linux mama 3.2.0-29-generic #46-Ubuntu SMP Fri Jul 27 17:03:23 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux
shravan@mama:~$ dmesg | egrep 'acx|at76|ath|b43|bcm|brcm|CX|eth|ipw|ireless|irmware|isl|lbtf|orinoco|ndiswrapper|NPE|ound|p54|prism|rtl|rt2|rt3|rt5|rt6|rt7|usb|witch|wl'
[ 0.000000] DMI: Hewlett-Packard HP Pavilion dv6 Notebook PC/1656, BIOS F.1B 10/05/2011
[ 0.000000] No AGP bridge found
[ 0.000000] found SMP MP-table at [ffff8800000fe1b0] fe1b0
[ 0.000000] No NUMA configuration found
[ 0.000000] No AGP bridge found
[ 0.955923] [Firmware Bug]: ACPI: BIOS _OSI(Linux) query ignored
[ 1.045521] ACPI: ACPI Dock Station Driver: 1 docks/bays found
[ 1.045523] HEST: Table not found.
[ 1.095927] i2c-core: driver [aat2870] using legacy suspend method
[ 1.095930] i2c-core: driver [aat2870] using legacy resume method
[ 1.096074] usbcore: registered new interface driver usbfs
[ 1.096083] usbcore: registered new interface driver hub
[ 1.096105] usbcore: registered new device driver usb
[ 1.106750] Switching to clocksource hpet
[ 1.114601] pnp: PnP ACPI: found 13 devices
[ 1.213602] input: Lid Switch as /devices/LNXSYSTM:00/device:00/PNP0A08:00/device:02/PNP0C0D:00/input/input0
[ 1.215931] ACPI: Lid Switch [LID]
[ 1.232047] ERST: Table is not found!
[ 1.466742] hub 1-0:1.0: USB hub found
[ 1.486717] hub 2-0:1.0: USB hub found
[ 1.487352] hub 3-0:1.0: USB hub found
[ 1.490560] hub 4-0:1.0: USB hub found
[ 1.542606] usbcore: registered new interface driver libusual
[ 1.569426] BIOS EDD facility v0.16 2004-Jun-25, 0 devices found
[ 1.778435] usb 1-1: new high-speed USB device number 2 using ehci_hcd
[ 1.910896] hub 1-1:1.0: USB hub found
[ 1.926009] r8169 0000:07:00.0: eth0: RTL8168evl/8111evl at 0xffffc9000067a000, 2c:27:d7:bb:ed:e8, XID 0c900800 IRQ 47
[ 1.926013] r8169 0000:07:00.0: eth0: jumbo features [frames: 9200 bytes, tx checksumming: ko]
[ 2.022373] usb 2-1: new high-speed USB device number 2 using ehci_hcd
[ 2.154921] hub 2-1:1.0: USB hub found
[ 2.166258] Switching to clocksource tsc
[ 2.226333] usb 1-1.1: new full-speed USB device number 3 using ehci_hcd
[ 2.390436] usb 1-1.2: new high-speed USB device number 4 using ehci_hcd
[ 15.064151] ADDRCONF(NETDEV_UP): eth0: link is not ready
[ 15.155145] wl: module license 'MIXED/Proprietary' taints kernel.
[ 15.161301] lp: driver loaded but no devices found
[ 15.195548] wl 0000:0d:00.0: PCI INT A -> GSI 17 (level, low) -> IRQ 17
[ 15.195557] wl 0000:0d:00.0: setting latency timer to 64
[ 15.239452] eth1: Broadcom BCM4727 802.11 Hybrid Wireless Controller 5.100.82.38
 (064e:e258)1] uvcvideo: Found UVC 1.00 device HP TrueVision HD
 as /devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.2/1-1.2:1.0/input/input4
[ 15.292657] usbcore: registered new interface driver uvcvideo
[ 16.017696] Console: switching to colour frame buffer device 240x67
[ 16.128237] [Firmware Bug]: ACPI(PEGP) defines _DOD but not _DOS
[ 16.243471] lis3lv02d: 8 bits 3DC sensor found
[ 16.315216] type=1400 audit(1345542677.251:8): apparmor="STATUS" operation="profile_load" name="/usr/lib/telepathy/mission-control-5" pid=1187 comm="apparmor_parser"
[ 16.315589] type=1400 audit(1345542677.251:9): apparmor="STATUS" operation="profile_load" name="/usr/lib/telepathy/telepathy-*" pid=1187 comm="apparmor_parser"
[ 16.403154] usb 2-1.5: new full-speed USB device number 3 using ehci_hcd
[ 16.567771] r8169 0000:07:00.0: eth0: link down
[ 16.568101] ADDRCONF(NETDEV_UP): eth0: link is not ready
[ 16.568381] ADDRCONF(NETDEV_UP): eth0: link is not ready
[ 16.601558] usbcore: registered new interface driver btusb
[ 16.603437] ADDRCONF(NETDEV_UP): eth1: link is not ready
[ 16.928736] input: HDA Intel PCH HDMI/DP,pcm=3 as /devices/pci0000:00/0000:00:1b.0/sound/card0/input10
[ 16.928835] input: HDA Intel PCH Mic as /devices/pci0000:00/0000:00:1b.0/sound/card0/input11
[ 16.928921] input: HDA Intel PCH Front Headphone as /devices/pci0000:00/0000:00:1b.0/sound/card0/input12
[ 95.125927] r8169 0000:07:00.0: eth0: link up
[ 95.126762] ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
[ 105.469212] eth0: no IPv6 routers present
[ 1688.501917] wl 0000:0d:00.0: PCI INT A disabled
[ 1688.502255] wl 0000:0d:00.0: PCI INT A -> GSI 17 (level, low) -> IRQ 17
[ 1688.502274] wl 0000:0d:00.0: setting latency timer to 64
[ 1688.570348] ADDRCONF(NETDEV_UP): eth1: link is not ready
[ 1688.817070] eth1: Broadcom BCM4727 802.11 Hybrid Wireless Controller 5.100.82.38
[ 1712.365214] usb 2-1.5: USB disconnect, device number 3
[ 1723.071824] usb 2-1.5: new full-speed USB device number 4 using ehci_hcd
[ 3975.064067] wl 0000:0d:00.0: PCI INT A disabled
[ 3976.541406] wl 0000:0d:00.0: restoring config space at offset 0xf (was 0x100, writing 0x103)
[ 3976.542114] wl 0000:0d:00.0: PCI INT A -> GSI 17 (level, low) -> IRQ 17
[ 3976.542125] wl 0000:0d:00.0: setting latency timer to 64
[ 3976.550498] usb usb3: root hub lost power or was reset
[ 3976.550499] usb usb4: root hub lost power or was reset
[ 3976.804662] usb 2-1.5: reset full-speed USB device number 4 using ehci_hcd
[ 3976.898953] btusb 2-1.5:1.0: no reset_resume for driver btusb?
[ 3976.898962] btusb 2-1.5:1.1: no reset_resume for driver btusb?
[ 3976.968569] usb 1-1.1: reset full-speed USB device number 3 using ehci_hcd
[ 3977.062271] PM: resume of drv:usb dev:1-1.1:1.0 complete after 507.564 msecs
[ 3977.132470] usb 1-1.2: reset high-speed USB device number 4 using ehci_hcd
[ 3977.148427] PM: resume of drv:usb dev:2-1.5:1.0 complete after 593.451 msecs
[ 3977.148431] PM: resume of drv:usb dev:2-1.5:1.1 complete after 593.387 msecs
[ 3977.148440] PM: resume of drv:usb dev:2-1.5:1.3 complete after 593.293 msecs
[ 3977.148443] PM: resume of drv:usb dev:2-1.5:1.2 complete after 593.347 msecs
[ 3980.167591] r8169 0000:07:00.0: eth0: link down
[ 3980.168000] ADDRCONF(NETDEV_UP): eth0: link is not ready
[ 4082.508800] r8169 0000:07:00.0: eth0: link up
[ 4082.509541] ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
[ 4093.504488] eth0: no IPv6 routers present
[ 4138.745381] usb 3-2: new full-speed USB device number 2 using xhci_hcd
[ 4138.818578] input: Microsoft Microsoft\xffffffc2\xffffffae\xffffffae 2.4GHz Transceiver v8.0 as /devices/pci0000:00/0000:00:1c.3/0000:19:00.0/usb3/3-2/3-2:1.0/input/input13
[ 4138.818832] generic-usb 0003:045E:0745.0001: input,hidraw0: USB HID v1.11 Keyboard [Microsoft Microsoft\xffffffc2\xffffffae\xffffffae 2.4GHz Transceiver v8.0] on usb-0000:19:00.0-2/input0
[ 4138.832116] input: Microsoft Microsoft\xffffffc2\xffffffae\xffffffae 2.4GHz Transceiver v8.0 as /devices/pci0000:00/0000:00:1c.3/0000:19:00.0/usb3/3-2/3-2:1.1/input/input14
[ 4138.832540] generic-usb 0003:045E:0745.0002: input,hidraw1: USB HID v1.11 Mouse [Microsoft Microsoft\xffffffc2\xffffffae\xffffffae 2.4GHz Transceiver v8.0] on usb-0000:19:00.0-2/input1
[ 4138.885652] input: Microsoft Microsoft\xffffffc2\xffffffae\xffffffae 2.4GHz Transceiver v8.0 as /devices/pci0000:00/0000:00:1c.3/0000:19:00.0/usb3/3-2/3-2:1.2/input/input15
[ 4138.886467] generic-usb 0003:045E:0745.0003: input,hiddev0,hidraw2: USB HID v1.11 Device [Microsoft Microsoft\xffffffc2\xffffffae\xffffffae 2.4GHz Transceiver v8.0] on usb-0000:19:00.0-2/input2
[ 4138.886537] usbcore: registered new interface driver usbhid
[ 4138.886544] usbhid: USB HID core driver
shravan@mama:~$ sudo dmidecode|egrep
Usage: egrep [OPTION]... PATTERN [FILE]...
Try `egrep --help' for more information.
shravan@mama:~$ sudo dmidecode|egrep 'anufact|roduct|erial|elease'
 Release Date: 10/05/2011
 Manufacturer: Hewlett-Packard
 Product Name: HP Pavilion dv6 Notebook PC
 Serial Number: 5CH1180ZCN
 Manufacturer: Hewlett-Packard
 Product Name: 1656
 Serial Number: PBZJR01HT0D2U5
 Manufacturer: Hewlett-Packard
 Serial Number: Chassis Serial Number
 Manufacturer: 13-42
 SBDS Serial Number: 1AEA
 SBDS Manufacture Date: 2011-02-11
 Manufacturer: Not Specified
 Serial Number: Not Specified
 Manufacturer: Micron Technology
 Serial Number: FD604824
 Manufacturer: Intel(R) Corporation
 Serial Number: Not Specified
shravan@mama:~$ iwconfig
lo no wireless extensions.

eth1 IEEE 802.11 Access Point: Not-Associated
          Link Quality:5 Signal level:0 Noise level:161
          Rx invalid nwid:0 invalid crypt:0 invalid misc:0

eth0 no wireless extensions.

shravan@mama:~$ cat /etc/modprobe.d/* | egrep
Usage: egrep [OPTION]... PATTERN [FILE]...
Try `egrep --help' for more information.
shravan@mama:~$ cat/etc/modprobe.d/* | egrep
bash: cat/etc/modprobe.d/*: No such file or directory
Usage: egrep [OPTION]... PATTERN [FILE]...
Try `egrep --help' for more information.
shravan@mama:~$ cat /etc/modprobe.d/* | egrep 'acx|at76|ath|b43|bcm|brcm|CX|eth|ipw|irmware|isl|lbtf|orinoco|ndiswrapper|NPE|p54|prism|rtl|rt2|rt3|rt6|rt7|wmi|witch|wl'
install snd-rawmidi /sbin/modprobe --ignore-install snd-rawmidi $CMDLINE_OPTS && { /sbin/modprobe --quiet --use-blacklist snd-seq-midi ; : ; }
# which ath5k cannot recover. To prevent this condition, stop
blacklist ath_pci
# Warning: This file is autogenerated by bcmwl. All changes to this file will be lost.
blacklist b43
blacklist b43legacy
blacklist bcm43xx
blacklist brcm80211
blacklist brcmfmac
blacklist brcmsmac
blacklist bcma
blacklist eth1394
# replaced by p54pci
blacklist prism54
# replaced by b43 and ssb.
blacklist bcm43xx
blacklist uart6850
blacklist twl4030_wdt
shravan@mama:~$ cat /var/lib/NetworkManager/NetworkManager.state

[main]
NetworkingEnabled=true
WirelessEnabled=true
WWANEnabled=true
WimaxEnabled=true
shravan@mama:~$ sudo hwinfo --netcard
> hal.1: read hal dataprocess 25087: arguments to dbus_move_error() were incorrect, assertion "(dest) == NULL || !dbus_error_is_set ((dest))" failed in file ../../dbus/dbus-errors.c line 282.
This is normally a bug in some application using the D-Bus library.
libhal.c 3483 : Error unsubscribing to signals, error=The name org.freedesktop.Hal was not provided by any .service files
23: PCI 700.0: 0200 Ethernet controller
  [Created at pci.318]
  Unique ID: rBUF.1FxVRIQujhF
  Parent ID: z8Q3.TvhVMXZK9V2
  SysFS ID: /devices/pci0000:00/0000:00:1c.0/0000:07:00.0
  SysFS BusID: 0000:07:00.0
  Hardware Class: network
  Model: "Realtek RTL8111/8168B PCI Express Gigabit Ethernet controller"
  Vendor: pci 0x10ec "Realtek Semiconductor Co., Ltd."
  Device: pci 0x8168 "RTL8111/8168B PCI Express Gigabit Ethernet controller"
  SubVendor: pci 0x103c "Hewlett-Packard Company"
  SubDevice: pci 0x1656
  Revision: 0x06
  Driver: "r8169"
  Driver Modules: "r8169"
  Device File: eth0
  I/O Ports: 0x4000-0x4fff (rw)
  Memory Range: 0xc0404000-0xc0404fff (ro,non-prefetchable)
  Memory Range: 0xc0400000-0xc0403fff (ro,non-prefetchable)
  IRQ: 47 (132801 events)
  HW Address: 2c:27:d7:bb:ed:e8
  Link detected: yes
  Module Alias: "pci:v000010ECd00008168sv0000103Csd00001656bc02sc00i00"
  Driver Info #0:
    Driver Status: r8169 is active
    Driver Activation Cmd: "modprobe r8169"
  Config Status: cfg=new, avail=yes, need=no, active=unknown
  Attached to: #14 (PCI bridge)

24: PCI d00.0: 0282 WLAN controller
  [Created at pci.318]
  Unique ID: JNkJ.AGWX_IMf7TD
  Parent ID: qTvu.Vka+JgokCG3
  SysFS ID: /devices/pci0000:00/0000:00:1c.1/0000:0d:00.0
  SysFS BusID: 0000:0d:00.0
  Hardware Class: network
  Model: "Broadcom WLAN controller"
  Vendor: pci 0x14e4 "Broadcom"
  Device: pci 0x4727
  SubVendor: pci 0x103c "Hewlett-Packard Company"
  SubDevice: pci 0x1483
  Revision: 0x01
  Driver: "wl"
  Driver Modules: "wl"
  Device File: eth1
  Features: WLAN
  Memory Range: 0xc4500000-0xc4503fff (rw,non-prefetchable)
  IRQ: 17 (3729 events)
  HW Address: cc:52:af:95:b0:5d
  Link detected: yes
  WLAN channels: 1 2 3 4 5 6 7 8 9 10 11 12 13 14
  WLAN frequencies: 2.412 2.417 2.422 2.427 2.432 2.437 2.442 2.447 2.452 2.457 2.462 2.467 2.472 2.484
  WLAN bitrates: 1 2 5.5 6 9 11 12 18 24 36 48 54 7 14.5 21.5 29 43.5 58 65 72
  WLAN encryption modes: WEP40 WEP104 WEP256 WEP128 TKIP CCMP
  WLAN authentication modes: open sharedkey wpa-psk wpa-eap
  Module Alias: "pci:v000014E4d00004727sv0000103Csd00001483bc02sc80i00"
  Driver Info #0:
    Driver Status: brcmsmac is not active
    Driver Activation Cmd: "modprobe brcmsmac"
  Driver Info #1:
    Driver Status: bcma is not active
    Driver Activation Cmd: "modprobe bcma"
  Driver Info #2:
    Driver Status: wl is active
    Driver Activation Cmd: "modprobe wl"
  Config Status: cfg=new, avail=yes, need=no, active=unknown
  Attached to: #15 (PCI bridge)
shravan@mama:~$ ps -aux|egrep 'wpa|icd|etwork'
Warning: bad ps syntax, perhaps a bogus '-'? See http://procps.sf.net/faq.html
root 1134 0.0 0.1 237848 5804 ? Ssl 15:21 0:01 NetworkManager
root 18873 0.0 0.0 31692 2312 ? Ss 15:49 0:03 /sbin/wpa_supplicant -B -P /run/sendsigs.omit.d/wpasupplicant.pid -u -s -O /var/run/wpa_supplicant
root 23488 0.0 0.0 7256 1572 ? S 16:54 0:00 /sbin/dhclient -d -4 -sf /usr/lib/NetworkManager/nm-dhcp-client.action -pf /var/run/sendsigs.omit.d/network-manager.dhclient-eth0.pid -lf /var/lib/dhcp/dhclient-2660571d-34f5-4cee-867b-79871f2292ac-eth0.lease -cf /var/run/nm-dhclient-eth0.conf eth0
nobody 23494 0.0 0.0 33016 1276 ? S 16:54 0:00 /usr/sbin/dnsmasq --no-resolv --keep-in-foreground --no-hosts --bind-interfaces --pid-file=/var/run/sendsigs.omit.d/network-manager.dnsmasq.pid --listen-address=127.0.0.1 --conf-file=/var/run/nm-dns-dnsmasq.conf --cache-size=0 --proxy-dnssec
shravan 25139 0.0 0.0 13580 924 pts/0 S+ 17:11 0:00 egrep --color=auto wpa|icd|etwork
shravan@mama:~$ sudo lsmod
Module Size Used by
usbhid 47199 0
hid 99559 1 usbhid
snd_hda_codec_hdmi 32474 1
snd_hda_codec_idt 70795 1
btusb 18288 2
rfcomm 47604 12
bnep 18281 2
bluetooth 180104 25 btusb,rfcomm,bnep
parport_pc 32866 0
ppdev 17113 0
joydev 17693 0
hp_wmi 18092 0
sparse_keymap 13890 1 hp_wmi
snd_hda_intel 33773 3
snd_hda_codec 127706 3 snd_hda_codec_hdmi,snd_hda_codec_idt,snd_hda_intel
snd_hwdep 13668 1 snd_hda_codec
snd_pcm 97188 3 snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec
snd_seq_midi 13324 0
snd_rawmidi 30748 1 snd_seq_midi
snd_seq_midi_event 14899 1 snd_seq_midi
snd_seq 61896 2 snd_seq_midi,snd_seq_midi_event
hp_accel 25976 0
lis3lv02d 19876 1 hp_accel
input_polldev 13896 1 lis3lv02d
uvcvideo 72627 0
videodev 98259 1 uvcvideo
v4l2_compat_ioctl32 17128 1 videodev
snd_timer 29990 2 snd_pcm,snd_seq
snd_seq_device 14540 3 snd_seq_midi,snd_rawmidi,snd_seq
wmi 19256 1 hp_wmi
psmouse 87692 0
lib80211_crypt_tkip 17390 0
snd 78855 16 snd_hda_codec_hdmi,snd_hda_codec_idt,snd_hda_intel,snd_hda_codec,snd_hwdep,snd_pcm,snd_rawmidi,snd_seq,snd_timer,snd_seq_device
serio_raw 13211 0
fglrx 3263886 203
mac_hid 13253 0
wl 2568210 0
i915 472941 2
drm_kms_helper 46978 1 i915
drm 242038 3 i915,drm_kms_helper
soundcore 15091 1 snd
i2c_algo_bit 13423 1 i915
mei 41616 0
snd_page_alloc 18529 2 snd_hda_intel,snd_pcm
coretemp 13525 0
video 19596 1 i915
rts_pstor 445196 0
lib80211 14381 2 lib80211_crypt_tkip,wl
lp 17799 0
parport 46562 3 parport_pc,ppdev,lp
r8169 62099 0
shravan@mama:~$ ^C

Have you tried following the instructions here

https://help.ubuntu.com/community/WifiDocs/Driver/bcm43xx

What was the result?

Can you also open a terminal and provide us with the output of the following command

sudo iwlist scan

here is the output of few commands
https://help.ubuntu.com/community/WifiDocs/Driver/bcm43xx
2nd command of the given link is not working.. :(

shravan@mama:~$ lspci -vvnn | grep 14e4
0d:00.0 Network controller [0280]: Broadcom Corporation BCM4313 802.11b/g/n Wireless LAN Controller [14e4:4727] (rev 01)
shravan@mama:~$ 03:00.0 Network controller [0280]: Broadcom Corporation BCM4313 802.11b/g/n Wireless LAN Controller [14e4:4727] (rev 01)
bash: syntax error near unexpected token `('
shravan@mama:~$ sudo iwlist scan
[sudo] password for shravan:
lo Interface doesn't support scanning.

eth1 No scan results

eth0 Interface doesn't support scanning.

shravan@mama:~$

OK this has established your wifi card is a

Broadcom Corporation BCM4313 802.11b/g/n Wireless LAN Controller

and your PCI-ID is 14e4:4727 which unfortunately is not currently supported see

http://www.linuxwireless.org/en/users/Drivers/b43#Supported_devices

One option would be to buy a USB Wifi dongle. Some models work better than others however

Check the list at the link below to ensure the one you buy has been tested first

https://help.ubuntu.com/community/WifiDocs/WirelessCardsSupported

but ... few day's back my wifi works... then how suddenly this problem arises..?

When was wifi working?

What has changed since? Any updates or new software for example

it was working a week ago..
i installed jupiter to soleve the heating issue.. then there are lots of option disable wifi disable bluetooth disable touchpad.. i dibled once all after that no way i can able to enable it.. and error message is coming youe wireless is disabled by hardware..

I have just had a search with Google and the problem appears to be Jupiter. I have found a few people with the same problem.

I have no experience of Jupiter so I suggest you close this question and open a new one:

Wifi disabled by Jupiter how do I re-enable?

This you put you back at the top of the list and may get a response from someone who has used this package