no detection of wireless connections

is there any button to turn on/off wireless
?

Hi,

Please first connect your wired network adapter to the wireless router using an ethernet cable (also known as a LAN cable).

In order to gather essential troubleshooting information about your wireless card, please follow this procedure:

Step 1:

If you are using the Gnome interface, open the Terminal console via "Applications->Accessories->Terminal"

If you are using the Unity interface, the easiest way to open the Terminal is to use the 'search' function on the dash. Or you can click on the 'More Apps' button, click on the 'See more results' by the installed section, and find it in that list of applications. A third way, available after you click on the 'More Apps' button, is to go to the search bar, and see that the far right end of it says 'All Applications'. You then click on that, and you'll see the full list. Then you can go to Accessories > Terminal after that.

So the methods in Unity are:
Dash > Search for Terminal
Dash > More Apps > 'See More Results' > Terminal
Dash > More Apps > Accessories > Terminal

Step 2: Please copy-paste the following command from https://help.ubuntu.com/community/WirelessTroubleshootingProcedure in Firefox into the Linux Terminal. Do NOT copy-paste from the Email message into the Terminal, as that will only copy PART of the command. The command STARTS with the word sudo and ENDS with the word lsmod. So please copy-paste the ENTIRE command below from Firefox into a Terminal, press <enter>, then enter password when sudo asks for password, then press enter again.

Tip: If you have a wheel mouse or 3 button mouse you do not need to type commands into the Terminal. Highlight the command written on the page. Move your cursor anywhere in the Terminal and press the wheel or middle button. Automatic Copy and paste! No spelling mistakes! No Typos! No other errors!

sudo apt-get update; sudo apt-get install hwinfo grep rfkill; sudo lshw -C network; rfkill list; sudo iwlist scanning; cat /etc/network/interfaces; cat /etc/lsb-release; lspci -nn; lsusb; sudo lshw -short; uname -a; 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';sudo dmidecode|egrep 'anufact|roduct|erial|elease'; iwconfig; 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'; cat /var/lib/NetworkManager/NetworkManager.state; sudo hwinfo --netcard ; ps -aux|egrep 'wpa|icd|etwork'; sudo lsmod

Step 3: Please post results (copy/paste terminal output) on this thread. The troubleshooters here need to see the full Terminal output from running the above command.

Step 4: Please also specify the exact model and make of your PC (if known) on this thread

Regards,

Mark

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Fetched 13.5MB in 30s (443kB/s)
Reading package lists... Done
W: Duplicate sources.list entry http://archive.canonical.com/ubuntu/ lucid/partner Packages (/var/lib/apt/lists/archive.canonical.com_ubuntu_dists_lucid_partner_binary-i386_Packages)
W: You may want to run apt-get update to correct these problems
Reading package lists... Done
Building dependency tree
Reading state information... Done
grep is already the newest version.
The following extra packages will be installed:
  libhd16
The following packages will be REMOVED:
  brscan
The following NEW packages will be installed:
  hwinfo libhd16 rfkill
0 upgraded, 3 newly installed, 1 to remove and 0 not upgraded.
1 not fully installed or removed.
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Get:1 http://archive.ubuntu.com/ubuntu/ lucid/universe libhd16 16.0-2 [698kB]
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(Reading database ... 405445 files and directories currently installed.)
Removing brscan ...
rmdir: failed to remove `/usr/local/Brother/sane/GrayCmData/BHL': No such file or directory
rmdir: failed to remove `/usr/local/Brother/sane/GrayCmData/BHL2': No such file or directory
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rmdir: failed to remove `/usr/local/Brother/sane/GrayCmData/ZLe': No such file or directory
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rmdir: failed to remove `/usr/local/Brother/sane': No such file or directory
dpkg: error processing brscan (--remove):
 subprocess installed post-removal script returned error exit status 1
Errors were encountered while processing:
 brscan
E: Sub-process /usr/bin/dpkg returned an error code (1)
  *-network UNCLAIMED
       description: Network controller
       product: BCM4312 802.11b/g
       vendor: Broadcom Corporation
       physical id: 0
       bus info: pci@0000:0c:00.0
       version: 01
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list
       configuration: latency=0
       resources: memory:f69fc000-f69fffff
  *-network
       description: Ethernet interface
       product: 88E8040 PCI-E Fast Ethernet Controller
       vendor: Marvell Technology Group Ltd.
       physical id: 0
       bus info: pci@0000:09:00.0
       logical name: eth0
       version: 13
       serial: 00:23:ae:2b:a7:ca
       size: 100MB/s
       capacity: 100MB/s
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=sky2 driverversion=1.28 duplex=full firmware=N/A ip=192.168.0.3 latency=0 link=yes multicast=yes port=twisted pair speed=100MB/s
       resources: irq:44 memory:f68fc000-f68fffff ioport:de00(size=256)
0: dell-wifi: Wireless LAN
 Soft blocked: no
 Hard blocked: no
lo Interface doesn't support scanning.

eth0 Interface doesn't support scanning.

auto lo
iface lo inet loopback

DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=10.04
DISTRIB_CODENAME=lucid
DISTRIB_DESCRIPTION="Ubuntu 10.04.4 LTS"
00:00.0 Host bridge [0600]: Intel Corporation Mobile 4 Series Chipset Memory Controller Hub [8086:2a40] (rev 07)
00:02.0 VGA compatible controller [0300]: Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller [8086:2a42] (rev 07)
00:02.1 Display controller [0380]: Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller [8086:2a43] (rev 07)
00:1a.0 USB Controller [0c03]: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #4 [8086:2937] (rev 03)
00:1a.1 USB Controller [0c03]: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #5 [8086:2938] (rev 03)
00:1a.2 USB Controller [0c03]: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #6 [8086:2939] (rev 03)
00:1a.7 USB Controller [0c03]: Intel Corporation 82801I (ICH9 Family) USB2 EHCI Controller #2 [8086:293c] (rev 03)
00:1b.0 Audio device [0403]: Intel Corporation 82801I (ICH9 Family) HD Audio Controller [8086:293e] (rev 03)
00:1c.0 PCI bridge [0604]: Intel Corporation 82801I (ICH9 Family) PCI Express Port 1 [8086:2940] (rev 03)
00:1c.1 PCI bridge [0604]: Intel Corporation 82801I (ICH9 Family) PCI Express Port 2 [8086:2942] (rev 03)
00:1c.2 PCI bridge [0604]: Intel Corporation 82801I (ICH9 Family) PCI Express Port 3 [8086:2944] (rev 03)
00:1c.4 PCI bridge [0604]: Intel Corporation 82801I (ICH9 Family) PCI Express Port 5 [8086:2948] (rev 03)
00:1d.0 USB Controller [0c03]: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #1 [8086:2934] (rev 03)
00:1d.1 USB Controller [0c03]: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #2 [8086:2935] (rev 03)
00:1d.2 USB Controller [0c03]: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #3 [8086:2936] (rev 03)
00:1d.7 USB Controller [0c03]: Intel Corporation 82801I (ICH9 Family) USB2 EHCI Controller #1 [8086:293a] (rev 03)
00:1e.0 PCI bridge [0604]: Intel Corporation 82801 Mobile PCI Bridge [8086:2448] (rev 93)
00:1f.0 ISA bridge [0601]: Intel Corporation ICH9M LPC Interface Controller [8086:2919] (rev 03)
00:1f.2 IDE interface [0101]: Intel Corporation ICH9M/M-E 2 port SATA IDE Controller [8086:2928] (rev 03)
00:1f.3 SMBus [0c05]: Intel Corporation 82801I (ICH9 Family) SMBus Controller [8086:2930] (rev 03)
00:1f.5 IDE interface [0101]: Intel Corporation ICH9M/M-E 2 port SATA IDE Controller [8086:292d] (rev 03)
09:00.0 Ethernet controller [0200]: Marvell Technology Group Ltd. 88E8040 PCI-E Fast Ethernet Controller [11ab:4354] (rev 13)
0c:00.0 Network controller [0280]: Broadcom Corporation BCM4312 802.11b/g [14e4:4315] (rev 01)
Bus 008 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 006 Device 002: ID 1bcf:053a Sunplus Innovation Technology Inc.
Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 003: ID 05ca:180a Ricoh Co., Ltd
Bus 001 Device 002: ID 0bda:0158 Realtek Semiconductor Corp. Mass Storage Device
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
H/W path Device Class Description
====================================================
                             system Portable Compute
/0 bus 0G848F
/0/0 memory 64KiB BIOS
/0/400 processor Intel(R) Core(TM
/0/400/700 memory 128KiB L1 cache
/0/400/701 memory 2MiB L2 cache
/0/400/1.1 processor Logical CPU
/0/400/1.2 processor Logical CPU
/0/1000 memory 4GiB System Memo
/0/1000/0 memory 2GiB DIMM DDR Sy
/0/1000/1 memory 2GiB DIMM DDR Sy
/0/100 bridge Mobile 4 Series
/0/100/2 display Mobile 4 Series
/0/100/2.1 display Mobile 4 Series
/0/100/1a bus 82801I (ICH9 Fam
/0/100/1a.1 bus 82801I (ICH9 Fam
/0/100/1a.2 bus 82801I (ICH9 Fam
/0/100/1a.7 bus 82801I (ICH9 Fam
/0/100/1b multimedia 82801I (ICH9 Fam
/0/100/1c bridge 82801I (ICH9 Fam
/0/100/1c.1 bridge 82801I (ICH9 Fam
/0/100/1c.1/0 network BCM4312 802.11b/
/0/100/1c.2 bridge 82801I (ICH9 Fam
/0/100/1c.2/0 eth0 network 88E8040 PCI-E Fa
/0/100/1c.4 bridge 82801I (ICH9 Fam
/0/100/1d bus 82801I (ICH9 Fam
/0/100/1d.1 bus 82801I (ICH9 Fam
/0/100/1d.2 bus 82801I (ICH9 Fam
/0/100/1d.7 bus 82801I (ICH9 Fam
/0/100/1e bridge 82801 Mobile PCI
/0/100/1f bridge ICH9M LPC Interf
/0/100/1f.2 scsi0 storage ICH9M/M-E 2 port
/0/100/1f.2/0 /dev/sda disk 320GB WDC WD3200
/0/100/1f.2/0/1 /dev/sda1 volume 195GiB Windows N
/0/100/1f.2/0/2 /dev/sda2 volume 98GiB EXT3 volum
/0/100/1f.2/0/3 /dev/sda3 volume 4769MiB Linux sw
/0/100/1f.2/1 /dev/cdrom disk DVD+-RW TS-L633B
/0/100/1f.3 bus 82801I (ICH9 Fam
/0/100/1f.5 storage ICH9M/M-E 2 port
/0/1 scsi4 storage
/0/1/0.0.0 /dev/sdb disk SCSI Disk
/1 power DELL 00
Linux norma-laptop 2.6.38-10-generic #46~lucid1-Ubuntu SMP Wed Jul 6 18:40:11 UTC 2011 i686 GNU/Linux
[ 0.212138] [Firmware Bug]: ACPI: BIOS _OSI(Linux) query ignored
[ 0.336240] ACPI: No dock devices found.
[ 0.336244] HEST: Table not found.
[ 0.410754] usbcore: registered new interface driver usbfs
[ 0.410767] usbcore: registered new interface driver hub
[ 0.410796] usbcore: registered new device driver usb
[ 0.416077] Switching to clocksource hpet
[ 0.419636] Switched to NOHz mode on CPU #0
[ 0.419722] Switched to NOHz mode on CPU #1
[ 0.460598] pnp: PnP ACPI: found 12 devices
[ 0.516620] input: Lid Switch as /devices/LNXSYSTM:00/device:00/PNP0C0D:00/input/input0
[ 0.588026] ACPI: Lid Switch [LID]
[ 0.643568] ERST: Table is not found!
[ 1.025631] isapnp: No Plug & Play device found
[ 1.059849] i2c-core: driver [adp5520] using legacy suspend method
[ 1.059852] i2c-core: driver [adp5520] using legacy resume method
[ 1.088149] hub 1-0:1.0: USB hub found
[ 1.108137] hub 2-0:1.0: USB hub found
[ 1.108518] hub 3-0:1.0: USB hub found
[ 1.108852] hub 4-0:1.0: USB hub found
[ 1.112183] hub 5-0:1.0: USB hub found
[ 1.112496] hub 6-0:1.0: USB hub found
[ 1.112811] hub 7-0:1.0: USB hub found
[ 1.113136] hub 8-0:1.0: USB hub found
[ 1.141551] device-mapper: multipath: version 1.2.0 loaded
[ 1.141553] device-mapper: multipath round-robin: version 1.0.0 loaded
[ 1.145623] BIOS EDD facility v0.16 2004-Jun-25, 0 devices found
[ 1.424579] usb 1-5: new high speed USB device using ehci_hcd and address 2
[ 1.692054] usb 1-6: new high speed USB device using ehci_hcd and address 3
[ 1.850944] usbcore: registered new interface driver uas
[ 1.854957] sky2 0000:09:00.0: eth0: addr 00:23:ae:2b:a7:ca
[ 1.870625] scsi4 : usb-storage 1-5:1.0
[ 1.871979] usbcore: registered new interface driver usb-storage
[ 2.132073] usb 6-2: new low speed USB device using uhci_hcd and address 2
[ 2.352221] Console: switching to colour frame buffer device 170x48
[ 2.354806] input: 2.4GHz 2way RF Receiver as /devices/pci0000:00/0000:00:1d.0/usb6/6-2/6-2:1.0/input/input4
[ 2.355197] generic-usb 0003:1BCF:053A.0001: input,hiddev0,hidraw0: USB HID v1.00 Mouse [2.4GHz 2way RF Receiver] on usb-0000:00:1d.0-2/input0
[ 2.355299] usbcore: registered new interface driver usbhid
[ 2.355301] usbhid: USB HID core driver
[ 2.357273] [Firmware Bug]: Duplicate ACPI video bus devices for the same VGA controller, please try module parameter "video.allow_duplicates=1"if the current driver doesn't work.
[ 31.045263] lp: driver loaded but no devices found
[ 31.260507] uvcvideo: Found UVC 1.00 device Integrated Webcam (05ca:180a)
[ 31.264270] input: Integrated Webcam as /devices/pci0000:00/0000:00:1a.7/usb1/1-6/1-6:1.0/input/input6
[ 31.264399] usbcore: registered new interface driver uvcvideo
[ 31.569105] input: HDA Intel Mic at Ext Right Jack as /devices/pci0000:00/0000:00:1b.0/sound/card0/input8
[ 31.569329] input: HDA Intel HP Out at Ext Right Jack as /devices/pci0000:00/0000:00:1b.0/sound/card0/input9
[ 31.999645] apm: BIOS not found.
[ 32.252952] sky2 0000:09:00.0: eth0: enabling interface
[ 32.253906] ADDRCONF(NETDEV_UP): eth0: link is not ready
[ 35.966151] sky2 0000:09:00.0: eth0: Link is up at 100 Mbps, full duplex, flow control both
[ 35.966328] ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
[ 46.472031] eth0: no IPv6 routers present
 Release Date: 02/25/2009
  Serial services are supported (int 14h)
 Manufacturer: Dell Inc.
 Product Name: Inspiron 1545
 Serial Number: G0T79H1
 Manufacturer: Dell Inc.
 Product Name: 0G848F
 Serial Number: .G0T79H1.CN7016694A07RA.
 Manufacturer: Dell Inc.
 Serial Number: G0T79H1
 Manufacturer: Intel
 Serial Number: Not Specified
 Manufacturer: CE00000000000000
 Serial Number: 767AC033
 Manufacturer: CE00000000000000
 Serial Number: 551BADC4
 Manufacturer: TH
 SBDS Serial Number: 0001
 SBDS Manufacture Date: 2012-03-24
lo no wireless extensions.

eth0 no wireless extensions.

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-kernel-source. All changes to this file will be lost.
blacklist b43
blacklist b43legacy
blacklist bcm43xx
blacklist eth1394
# replaced by p54pci
blacklist prism54
# replaced by b43 and ssb.
blacklist bcm43xx
blacklist uart6850
blacklist twl4030_wdt

[main]
NetworkingEnabled=true
WirelessEnabled=true
WWANEnabled=true
sudo: hwinfo: command not found
Warning: bad ps syntax, perhaps a bogus '-'? See http://procps.sf.net/faq.html
root 776 0.0 0.1 16700 3848 ? Ssl 16:43 0:00 NetworkManager
root 1112 0.0 0.0 4884 1524 ? S 16:43 0:00 /sbin/wpa_supplicant -u -s
root 1643 0.0 0.0 2280 1048 ? S 16:43 0:00 /sbin/dhclient -d -sf /usr/lib/NetworkManager/nm-dhcp-client.action -pf /var/run/dhclient-eth0.pid -lf /var/lib/dhcp3/dhclient-fc39ddc6-a8b3-425d-820c-39ba82cbdae6-eth0.lease -cf /var/run/nm-dhclient-eth0.conf eth0
norma 2547 0.0 0.0 3368 752 pts/0 S+ 17:16 0:00 egrep wpa|icd|etwork
Module Size Used by
binfmt_misc 17258 1
ppdev 12900 0
snd_hda_codec_idt 60334 1
snd_hda_intel 23958 2
snd_hda_codec 90489 2 snd_hda_codec_idt,snd_hda_intel
snd_hwdep 13272 1 snd_hda_codec
snd_pcm 75935 2 snd_hda_intel,snd_hda_codec
snd_seq_midi 13132 0
dell_wmi 12601 0
snd_rawmidi 25157 1 snd_seq_midi
sparse_keymap 13658 1 dell_wmi
dell_laptop 13440 0
snd_seq_midi_event 14475 1 snd_seq_midi
snd_seq 51256 2 snd_seq_midi,snd_seq_midi_event
snd_timer 28705 2 snd_pcm,snd_seq
snd_seq_device 14130 3 snd_seq_midi,snd_rawmidi,snd_seq
joydev 17313 0
dcdbas 14054 1 dell_laptop
uvcvideo 66427 0
videodev 75054 1 uvcvideo
snd 55314 13 snd_hda_codec_idt,snd_hda_intel,snd_hda_codec,snd_hwdep,snd_pcm,snd_rawmidi,snd_seq,snd_timer,snd_seq_device
psmouse 73265 0
serio_raw 13024 0
soundcore 12600 1 snd
snd_page_alloc 14036 2 snd_hda_intel,snd_pcm
lp 13349 0
parport 36664 2 ppdev,lp
usbhid 45576 0
hid 76914 1 usbhid
i915 466740 2
usb_storage 43811 0
uas 17587 0
sky2 48933 0
drm_kms_helper 40662 1 i915
drm 184124 3 i915,drm_kms_helper
i2c_algo_bit 13152 1 i915
video 18792 1 i915
ramzswap 13163 0
xvmalloc 13474 1 ramzswap

I don't know if this information went through so I'm sending it once more.
Then for step 4: DELL Inspiron 1545 laptop

sorry,

I think that you are trying to use the wrong wireless driver.

Please try the b43 driver and firmware instead of the wl driver.

Please copy-paste the following commands into the Terminal (using a working, WIRED Internet connection):

sudo apt-get update
sudo apt-get remove --purge bcmwl-kernel-source
sudo apt-get install firmware-b43-lpphy-installer

Then please run the following command:

gksudo gedit /etc/modprobe.d/blacklist.conf

Using the gedit editor, please REMOVE the following configuration lines in
the /etc/modprobe.d/blacklist.conf file:

blacklist b43
blacklist b43legacy

SAVE the change to the /etc/modprobe.d/blacklist.conf file after
removing the configuration lines.

Then reboot and retest wireless.

Source: https://answers.launchpad.net/ubuntu/+source/gnome-nettool/+question/178531

If that does not help, please install Ubuntu 12.04 LTS and then redo the procedure I just gave you.....