[duplicate] Trouble connecting to wireless networks. Networks show up but wont let me connect.(Had to re-open this problem, link to original post inside)

Here is a link to the original post if the information here doesn't come out correctly.
https://answers.launchpad.net/ubuntu/+source/gnome-nettool/+question/149292

I am using ubuntu 10.10.

Recently I have been having trouble connecting to wireless networks. I have wireless enabled and the networks show up on the "available networks" area, but I can't connect to them for some reason. When I select them, it starts to connect to them, then just stops and says "wireless disconnected".

I have connected to wireless networks before and this has just started to happen. I'm pretty sure that I haven't changed any settings for the wireless. I've tried the usual restart and everything, and the computer is upgraded and working fine, just wireless isn't working.

Any help is appreciated.

Let me know if you need any information about my system.

14 minutes ago
Last reply:
2011-03-18
Related bugs

Link existing bug
Related FAQ:

None

Mark Rijckenberg said on 2011-03-17:
Hi,

Please first connect your network card 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: Open Terminal from "Applications->Accessories->Terminal"

Step 2: Please copy-paste the following command from the https://answers.launchpad.net/ubuntu website 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 restart. 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; 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|CX|eth|ipw|irmware|isl|lbtf|ndiswrapper|NPE|ound|prism|rtl|rt2|rt3|usb|witch|wl'; iwconfig; grep b43 /etc/modprobe.d/*; grep wl /etc/modprobe.d/*; sudo hwinfo --netcard ; sudo lsmod; cat /var/lib/NetworkManager/NetworkManager.state; sudo /etc/init.d/networking restart

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

William Karavites said on 2011-03-17:
I am currently at a University. While In my room I use the Ethernet cable to plug in directly to the wall. It is when I try and access ANY wireless network that I have problems.(i.e- computer labs, cafe's, library)

Does it make a difference that I am using the Universities wireless networks? They have 3 that I can choose from.

I am currently in class right now and will give you the information when I get back to my room.

William Karavites said on 2011-03-18:
This is what I got from the terminal...

Hit http://extras.ubuntu.com maverick Release.gpg
Ign http://extras.ubuntu.com/ubuntu/ maverick/main Translation-en
Hit http://archive.canonical.com maverick Release.gpg
Ign http://archive.canonical.com/ubuntu/ maverick/partner Translation-en
Hit http://security.ubuntu.com maverick-security Release.gpg
Ign http://security.ubuntu.com/ubuntu/ maverick-security/main Translation-en
Ign http://security.ubuntu.com/ubuntu/ maverick-security/main Translation-en_GB
Hit http://gb.archive.ubuntu.com maverick Release.gpg
Ign http://gb.archive.ubuntu.com/ubuntu/ maverick/main Translation-en
Hit http://gb.archive.ubuntu.com/ubuntu/ maverick/main Translation-en_GB
Ign http://extras.ubuntu.com/ubuntu/ maverick/main Translation-en_GB
Ign http://archive.canonical.com/ubuntu/ maverick/partner Translation-en_GB
Hit http://extras.ubuntu.com maverick Release
Ign http://gb.archive.ubuntu.com/ubuntu/ maverick/multiverse Translation-en
Hit http://gb.archive.ubuntu.com/ubuntu/ maverick/multiverse Translation-en_GB
Ign http://gb.archive.ubuntu.com/ubuntu/ maverick/restricted Translation-en
Hit http://gb.archive.ubuntu.com/ubuntu/ maverick/restricted Translation-en_GB
Ign http://gb.archive.ubuntu.com/ubuntu/ maverick/universe Translation-en
Hit http://gb.archive.ubuntu.com/ubuntu/ maverick/universe Translation-en_GB
Hit http://gb.archive.ubuntu.com maverick-updates Release.gpg
Hit http://archive.canonical.com maverick Release
Ign http://security.ubuntu.com/ubuntu/ maverick-security/multiverse Translation-en
Ign http://security.ubuntu.com/ubuntu/ maverick-security/multiverse Translation-en_GB
Ign http://security.ubuntu.com/ubuntu/ maverick-security/restricted Translation-en
Ign http://security.ubuntu.com/ubuntu/ maverick-security/restricted Translation-en_GB
Ign http://security.ubuntu.com/ubuntu/ maverick-security/universe Translation-en
Ign http://security.ubuntu.com/ubuntu/ maverick-security/universe Translation-en_GB
Hit http://security.ubuntu.com maverick-security Release
Hit http://ppa.launchpad.net maverick Release.gpg
Ign http://ppa.launchpad.net/bisigi/ppa/ubuntu/ maverick/main Translation-en
Ign http://ppa.launchpad.net/bisigi/ppa/ubuntu/ maverick/main Translation-en_GB
Ign http://gb.archive.ubuntu.com/ubuntu/ maverick-updates/main Translation-en
Ign http://gb.archive.ubuntu.com/ubuntu/ maverick-updates/main Translation-en_GB
Ign http://gb.archive.ubuntu.com/ubuntu/ maverick-updates/multiverse Translation-en
Hit http://ppa.launchpad.net maverick Release.gpg
Ign http://ppa.launchpad.net/team-xbmc/ppa/ubuntu/ maverick/main Translation-en
Ign http://ppa.launchpad.net/team-xbmc/ppa/ubuntu/ maverick/main Translation-en_GB
Hit http://ppa.launchpad.net maverick Release.gpg
Ign http://ppa.launchpad.net/tualatrix/ppa/ubuntu/ maverick/main Translation-en
Ign http://ppa.launchpad.net/tualatrix/ppa/ubuntu/ maverick/main Translation-en_GB
Ign http://gb.archive.ubuntu.com/ubuntu/ maverick-updates/multiverse Translation-en_GB
Ign http://gb.archive.ubuntu.com/ubuntu/ maverick-updates/restricted Translation-en
Ign http://gb.archive.ubuntu.com/ubuntu/ maverick-updates/restricted Translation-en_GB
Ign http://gb.archive.ubuntu.com/ubuntu/ maverick-updates/universe Translation-en
Ign http://gb.archive.ubuntu.com/ubuntu/ maverick-updates/universe Translation-en_GB
Hit http://gb.archive.ubuntu.com maverick Release
Get:1 http://dl.google.com stable Release.gpg [189B]
Hit http://ppa.launchpad.net maverick Release
Hit http://gb.archive.ubuntu.com maverick-updates Release
Ign http://download.skype.com stable Release.gpg
Ign http://download.skype.com/linux/repos/debian/ stable/non-free Translation-en
Hit http://ppa.launchpad.net maverick Release
Hit http://ppa.launchpad.net maverick Release
Hit http://packages.medibuntu.org maverick Release.gpg
Ign http://dl.google.com/linux/deb/ stable/main Translation-en
Ign http://download.skype.com/linux/repos/debian/ stable/non-free Translation-en_GB
Ign http://download.skype.com stable Release
Ign http://packages.medibuntu.org/ maverick/free Translation-en
Ign http://download.skype.com stable/non-free Sources
Ign http://download.skype.com stable/non-free i386 Packages/DiffIndex
Ign http://packages.medibuntu.org/ maverick/free Translation-en_GB
Ign http://download.skype.com stable/non-free Sources
Ign http://dl.google.com/linux/deb/ stable/main Translation-en_GB
Hit http://extras.ubuntu.com maverick/main Sources
Hit http://download.skype.com stable/non-free i386 Packages
Ign http://packages.medibuntu.org/ maverick/non-free Translation-en
Hit http://archive.canonical.com maverick/partner Sources
Hit http://extras.ubuntu.com maverick/main i386 Packages
Hit http://archive.canonical.com maverick/partner i386 Packages
Err http://download.skype.com stable/non-free Sources
  404 Not Found
Ign http://packages.medibuntu.org/ maverick/non-free Translation-en_GB
Hit http://security.ubuntu.com maverick-security/main Sources
Hit http://security.ubuntu.com maverick-security/restricted Sources
Hit http://security.ubuntu.com maverick-security/universe Sources
Hit http://security.ubuntu.com maverick-security/multiverse Sources
Hit http://security.ubuntu.com maverick-security/main i386 Packages
Hit http://security.ubuntu.com maverick-security/restricted i386 Packages
Hit http://security.ubuntu.com maverick-security/universe i386 Packages
Hit http://security.ubuntu.com maverick-security/multiverse i386 Packages
Hit http://packages.medibuntu.org maverick Release
Hit http://ppa.launchpad.net maverick/main Sources
Hit http://ppa.launchpad.net maverick/main i386 Packages
Hit http://gb.archive.ubuntu.com maverick/main Sources
Hit http://gb.archive.ubuntu.com maverick/restricted Sources
Hit http://gb.archive.ubuntu.com maverick/universe Sources
Hit http://gb.archive.ubuntu.com maverick/multiverse Sources
Hit http://gb.archive.ubuntu.com maverick/main i386 Packages
Hit http://gb.archive.ubuntu.com maverick/restricted i386 Packages
Hit http://gb.archive.ubuntu.com maverick/universe i386 Packages
Hit http://gb.archive.ubuntu.com maverick/multiverse i386 Packages
Hit http://gb.archive.ubuntu.com maverick-updates/main Sources
Hit http://gb.archive.ubuntu.com maverick-updates/restricted Sources
Hit http://gb.archive.ubuntu.com maverick-updates/universe Sources
Hit http://gb.archive.ubuntu.com maverick-updates/multiverse Sources
Hit http://gb.archive.ubuntu.com maverick-updates/main i386 Packages
Hit http://gb.archive.ubuntu.com maverick-updates/restricted i386 Packages
Hit http://gb.archive.ubuntu.com maverick-updates/universe i386 Packages
Hit http://gb.archive.ubuntu.com maverick-updates/multiverse i386 Packages
Hit http://ppa.launchpad.net maverick/main Sources
Hit http://ppa.launchpad.net maverick/main i386 Packages
Hit http://ppa.launchpad.net maverick/main i386 Packages
Hit http://packages.medibuntu.org maverick/free Sources
Hit http://packages.medibuntu.org maverick/non-free Sources
Hit http://packages.medibuntu.org maverick/free i386 Packages
Hit http://packages.medibuntu.org maverick/non-free i386 Packages
Ign http://dl.google.com/linux/deb/ stable/non-free Translation-en
Ign http://dl.google.com/linux/deb/ stable/non-free Translation-en_GB
Get:2 http://dl.google.com stable Release.gpg [197B]
Ign http://dl.google.com/linux/chrome/deb/ stable/main Translation-en
Ign http://dl.google.com/linux/chrome/deb/ stable/main Translation-en_GB
Get:3 http://dl.google.com stable Release [2,544B]
Get:4 http://dl.google.com stable Release [1,347B]
Get:5 http://dl.google.com stable/main i386 Packages [1,064B]
Fetched 5,341B in 9s (556B/s)
W: Failed to fetch http://dl.google.com/linux/deb/dists/stable/Release Unable to find expected entry non-free/source/Sources in Meta-index file (malformed Release file?)

W: Failed to fetch http://download.skype.com/linux/repos/debian/dists/stable/non-free/source/Sources.gz 404 Not Found

E: Some index files failed to download, they have been ignored, or old ones used instead.
Reading package lists... Done
Building dependency tree
Reading state information... Done
grep is already the newest version.
hwinfo is already the newest version.
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
  *-network
       description: Ethernet interface
       product: 82566MC Gigabit Network Connection
       vendor: Intel Corporation
       physical id: 19
       bus info: pci@0000:00:19.0
       logical name: eth0
       version: 03
       serial: 00:e0:b8:d0:53:b4
       size: 10MB/s
       capacity: 1GB/s
       width: 32 bits
       clock: 33MHz
       capabilities: pm msi bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=e1000e driverversion=1.0.2-k4 duplex=full firmware=0.3-0 ip=144.173.212.94 latency=0 link=yes multicast=yes port=twisted pair speed=10MB/s
       resources: irq:43 memory:f8500000-f851ffff memory:f8524000-f8524fff ioport:1800(size=32)
  *-network
       description: Wireless interface
       product: PRO/Wireless 3945ABG [Golan] Network Connection
       vendor: Intel Corporation
       physical id: 0
       bus info: pci@0000:02:00.0
       logical name: wlan0
       version: 02
       serial: 00:1c:bf:a4:ae:11
       width: 32 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=iwl3945 driverversion=2.6.35-28-generic firmware=15.32.2.9 latency=0 link=no multicast=yes wireless=IEEE 802.11abg
       resources: irq:45 memory:f8100000-f8100fff
0: phy0: Wireless LAN
 Soft blocked: no
 Hard blocked: no
1: hci0: Bluetooth
 Soft blocked: no
 Hard blocked: no
lo Interface doesn't support scanning.

eth0 Interface doesn't support scanning.

wlan0 No scan results

auto lo
iface lo inet loopback

DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=10.10
DISTRIB_CODENAME=maverick
DISTRIB_DESCRIPTION="Ubuntu 10.10"
00:00.0 Host bridge [0600]: Intel Corporation Mobile PM965/GM965/GL960 Memory Controller Hub [8086:2a00] (rev 03)
00:01.0 PCI bridge [0604]: Intel Corporation Mobile PM965/GM965/GL960 PCI Express Root Port [8086:2a01] (rev 03)
00:19.0 Ethernet controller [0200]: Intel Corporation 82566MC Gigabit Network Connection [8086:104d] (rev 03)
00:1a.0 USB Controller [0c03]: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #4 [8086:2834] (rev 03)
00:1a.1 USB Controller [0c03]: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #5 [8086:2835] (rev 03)
00:1a.7 USB Controller [0c03]: Intel Corporation 82801H (ICH8 Family) USB2 EHCI Controller #2 [8086:283a] (rev 03)
00:1b.0 Audio device [0403]: Intel Corporation 82801H (ICH8 Family) HD Audio Controller [8086:284b] (rev 03)
00:1c.0 PCI bridge [0604]: Intel Corporation 82801H (ICH8 Family) PCI Express Port 1 [8086:283f] (rev 03)
00:1d.0 USB Controller [0c03]: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #1 [8086:2830] (rev 03)
00:1d.1 USB Controller [0c03]: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #2 [8086:2831] (rev 03)
00:1d.2 USB Controller [0c03]: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #3 [8086:2832] (rev 03)
00:1d.7 USB Controller [0c03]: Intel Corporation 82801H (ICH8 Family) USB2 EHCI Controller #1 [8086:2836] (rev 03)
00:1e.0 PCI bridge [0604]: Intel Corporation 82801 Mobile PCI Bridge [8086:2448] (rev f3)
00:1f.0 ISA bridge [0601]: Intel Corporation 82801HEM (ICH8M) LPC Interface Controller [8086:2815] (rev 03)
00:1f.1 IDE interface [0101]: Intel Corporation 82801HBM/HEM (ICH8M/ICH8M-E) IDE Controller [8086:2850] (rev 03)
00:1f.2 SATA controller [0106]: Intel Corporation 82801HBM/HEM (ICH8M/ICH8M-E) SATA AHCI Controller [8086:2829] (rev 03)
00:1f.3 SMBus [0c05]: Intel Corporation 82801H (ICH8 Family) SMBus Controller [8086:283e] (rev 03)
01:00.0 VGA compatible controller [0300]: ATI Technologies Inc M71 [Mobility Radeon X2100] (Secondary) [1002:7211] (rev ce)
02:00.0 Network controller [0280]: Intel Corporation PRO/Wireless 3945ABG [Golan] Network Connection [8086:4222] (rev 02)
03:09.0 CardBus bridge [0607]: Texas Instruments PCIxx12 Cardbus Controller [104c:8039]
03:09.1 FireWire (IEEE 1394) [0c00]: Texas Instruments PCIxx12 OHCI Compliant IEEE 1394 Host Controller [104c:803a]
03:09.2 Mass storage controller [0180]: Texas Instruments 5-in-1 Multimedia Card Reader (SD/MMC/MS/MS PRO/xD) [104c:803b]
03:09.3 SD Host controller [0805]: Texas Instruments PCIxx12 SDA Standard Compliant SD Host Controller [104c:803c]
Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
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 002: ID 0483:2016 SGS Thomson Microelectronics Fingerprint Reader
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 002: ID 0a5c:2101 Broadcom Corp. Bluetooth Controller
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 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
H/W path Device Class Description
==========================================================
                                   system C-142XL
/0 bus Motherboard
/0/0 memory 107KiB BIOS
/0/4 processor Intel(R) Core(TM)2 Duo CPU T8
/0/4/5 memory 64KiB L1 cache
/0/4/6 memory 3MiB L2 cache
/0/4/0.1 processor Logical CPU
/0/4/0.2 processor Logical CPU
/0/f memory 3GiB System Memory
/0/f/0 memory 1GiB DIMM DDR2 Synchronous 667 MH
/0/f/1 memory 2GiB DIMM DDR2 Synchronous 667 MH
/0/1 processor
/0/1/0.1 processor Logical CPU
/0/1/0.2 processor Logical CPU
/0/100 bridge Mobile PM965/GM965/GL960 Memory C
/0/100/1 bridge Mobile PM965/GM965/GL960 PCI Expr
/0/100/1/0 display M71 [Mobility Radeon X2100] (Seco
/0/100/19 eth0 network 82566MC Gigabit Network Connectio
/0/100/1a bus 82801H (ICH8 Family) USB UHCI Con
/0/100/1a.1 bus 82801H (ICH8 Family) USB UHCI Con
/0/100/1a.7 bus 82801H (ICH8 Family) USB2 EHCI Co
/0/100/1b multimedia 82801H (ICH8 Family) HD Audio Con
/0/100/1c bridge 82801H (ICH8 Family) PCI Express
/0/100/1c/0 wlan0 network PRO/Wireless 3945ABG [Golan] Netw
/0/100/1d bus 82801H (ICH8 Family) USB UHCI Con
/0/100/1d.1 bus 82801H (ICH8 Family) USB UHCI Con
/0/100/1d.2 bus 82801H (ICH8 Family) USB UHCI Con
/0/100/1d.7 bus 82801H (ICH8 Family) USB2 EHCI Co
/0/100/1e bridge 82801 Mobile PCI Bridge
/0/100/1e/9 bridge PCIxx12 Cardbus Controller
/0/100/1e/9.1 bus PCIxx12 OHCI Compliant IEEE 1394
/0/100/1e/9.2 storage 5-in-1 Multimedia Card Reader (SD
/0/100/1e/9.3 generic PCIxx12 SDA Standard Compliant SD
/0/100/1f bridge 82801HEM (ICH8M) LPC Interface Co
/0/100/1f.1 scsi0 storage 82801HBM/HEM (ICH8M/ICH8M-E) IDE
/0/100/1f.1/0.0.0 /dev/cdrom disk DVD RW AD-7560A
/0/100/1f.2 scsi2 storage 82801HBM/HEM (ICH8M/ICH8M-E) SATA
/0/100/1f.2/0.0.0 /dev/sda disk 250GB ST9250827AS
/0/100/1f.2/0.0.0/1 /dev/sda1 volume 224GiB EXT4 volume
/0/100/1f.2/0.0.0/2 /dev/sda2 volume 8997MiB Extended partition
/0/100/1f.2/0.0.0/2/5 /dev/sda5 volume 8997MiB Linux swap / Solaris part
/0/100/1f.3 bus 82801H (ICH8 Family) SMBus Contro
/1 power MAL42b
Linux will-C-142XL 2.6.35-28-generic #49-Ubuntu SMP Tue Mar 1 14:40:58 UTC 2011 i686 GNU/Linux
[ 0.000000] Phoenix BIOS detected: BIOS may corrupt low RAM, working around it.
[ 0.000000] found SMP MP-table at [c00f6ab0] f6ab0
[ 0.000000] ACPI: BIOS bug: multiple APIC/MADT found, using 0
[ 0.245600] ACPI: ACPI Dock Station Driver: 3 docks/bays found
[ 0.286244] HEST: Table is not found!
[ 0.287181] usbcore: registered new interface driver usbfs
[ 0.287213] usbcore: registered new interface driver hub
[ 0.287275] usbcore: registered new device driver usb
[ 0.296064] Switching to clocksource tsc
[ 0.333839] pnp: PnP ACPI: found 11 devices
[ 0.891628] input: Lid Switch as /devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0D:00/input/input0
[ 0.893718] ACPI: Lid Switch [LID]
[ 0.901591] Switching to clocksource hpet
[ 0.922514] ERST: Table is not found!
[ 0.953295] hub 1-0:1.0: USB hub found
[ 0.973293] hub 2-0:1.0: USB hub found
[ 0.974019] hub 3-0:1.0: USB hub found
[ 0.974641] hub 4-0:1.0: USB hub found
[ 0.975236] hub 5-0:1.0: USB hub found
[ 0.975847] hub 6-0:1.0: USB hub found
[ 0.976435] hub 7-0:1.0: USB hub found
[ 0.985351] device-mapper: multipath: version 1.1.1 loaded
[ 0.985357] device-mapper: multipath round-robin: version 1.0.0 loaded
[ 0.990611] BIOS EDD facility v0.16 2004-Jun-25, 0 devices found
[ 1.278216] isapnp: No Plug & Play device found
[ 1.489217] sdhci-pci 0000:03:09.3: SDHCI controller found [104c:803c] (rev 0)
[ 1.616061] usb 3-1: new full speed USB device using uhci_hcd and address 2
[ 1.763502] e1000e 0000:00:19.0: eth0: (PCI Express:2.5GB/s:Width x1) 00:e0:b8:d0:53:b4
[ 1.763505] e1000e 0000:00:19.0: eth0: Intel(R) PRO/1000 Network Connection
[ 1.763530] e1000e 0000:00:19.0: eth0: MAC: 6, PHY: 6, PBA No: ffffff-0ff
[ 2.028037] usb 4-1: new full speed USB device using uhci_hcd and address 2
[ 20.147044] lp: driver loaded but no devices found
[ 20.443261] iwl3945: Intel(R) PRO/Wireless 3945ABG/BG Network Connection driver for Linux, in-tree:s
[ 20.443265] iwl3945: Copyright(c) 2003-2010 Intel Corporation
[ 20.443338] iwl3945 0000:02:00.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16
[ 20.443352] iwl3945 0000:02:00.0: setting latency timer to 64
[ 20.499005] iwl3945 0000:02:00.0: Tunable channels: 11 802.11bg, 13 802.11a channels
[ 20.499009] iwl3945 0000:02:00.0: Detected Intel Wireless WiFi Link 3945ABG
[ 20.499285] iwl3945 0000:02:00.0: irq 45 for MSI/MSI-X
[ 20.571858] yenta_cardbus 0000:03:09.0: CardBus bridge found [107b:0290]
[ 20.747808] usbcore: registered new interface driver btusb
[ 21.188960] phy0: Selected rate control algorithm 'iwl-3945-rs'
[ 21.536560] input: HDA Intel Mic at Ext Front Jack as /devices/pci0000:00/0000:00:1b.0/sound/card0/input7
[ 21.536747] input: HDA Intel HP Out at Ext Front Jack as /devices/pci0000:00/0000:00:1b.0/sound/card0/input8
[ 21.648160] Console: switching to colour frame buffer device 160x48
[ 22.277345] ADDRCONF(NETDEV_UP): eth0: link is not ready
[ 22.501327] iwl3945 0000:02:00.0: loaded firmware version 15.32.2.9
[ 22.581342] ADDRCONF(NETDEV_UP): wlan0: link is not ready
[ 23.716894] e1000e: eth0 NIC Link is Up 10 Mbps Full Duplex, Flow Control: None
[ 23.716899] e1000e 0000:00:19.0: eth0: 10/100 speed: disabling TSO
[ 23.717080] ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
[ 34.088013] eth0: no IPv6 routers present
lo no wireless extensions.

eth0 no wireless extensions.

wlan0 IEEE 802.11abg ESSID:off/any
          Mode:Managed Access Point: Not-Associated Tx-Power=15 dBm
          Retry long limit:7 RTS thr:off Fragment thr:off
          Power Management:off

/etc/modprobe.d/blacklist.conf:# replaced by b43 and ssb.
/etc/modprobe.d/blacklist-watchdog.conf:blacklist twl4030_wdt
/etc/modprobe.d/intel-5300-iwlagn-disable11n.conf:options iwlagn 11n_disable=1
10: PCI 19.0: 0200 Ethernet controller
  [Created at pci.318]
  UDI: /org/freedesktop/Hal/devices/pci_8086_104d
  Unique ID: rBUF.Ph7XoVW9uU9
  SysFS ID: /devices/pci0000:00/0000:00:19.0
  SysFS BusID: 0000:00:19.0
  Hardware Class: network
  Model: "Intel 82566MC Gigabit Network Connection"
  Vendor: pci 0x8086 "Intel Corporation"
  Device: pci 0x104d "82566MC Gigabit Network Connection"
  SubVendor: pci 0x107b "Gateway 2000"
  SubDevice: pci 0x0290
  Revision: 0x03
  Driver: "e1000e"
  Driver Modules: "e1000e"
  Device File: eth0
  Memory Range: 0xf8500000-0xf851ffff (rw,non-prefetchable)
  Memory Range: 0xf8524000-0xf8524fff (rw,non-prefetchable)
  I/O Ports: 0x1800-0x181f (rw)
  IRQ: 43 (4574 events)
  HW Address: 00:e0:b8:d0:53:b4
  Link detected: yes
  Module Alias: "pci:v00008086d0000104Dsv0000107Bsd00000290bc02sc00i00"
  Driver Info #0:
    Driver Status: e1000e is active
    Driver Activation Cmd: "modprobe e1000e"
  Config Status: cfg=new, avail=yes, need=no, active=unknown

26: PCI 200.0: 0282 WLAN controller
  [Created at pci.318]
  UDI: /org/freedesktop/Hal/devices/pci_8086_4222
  Unique ID: y9sn.QcgIbfETkb6
  Parent ID: z8Q3.hvnkGJmkl+0
  SysFS ID: /devices/pci0000:00/0000:00:1c.0/0000:02:00.0
  SysFS BusID: 0000:02:00.0
  Hardware Class: network
  Model: "Intel PRO/Wireless 3945ABG Network Connection"
  Vendor: pci 0x8086 "Intel Corporation"
  Device: pci 0x4222 "PRO/Wireless 3945ABG [Golan] Network Connection"
  SubVendor: pci 0x8086 "Intel Corporation"
  SubDevice: pci 0x1000 "PRO/Wireless 3945ABG Network Connection"
  Revision: 0x02
  Driver: "iwl3945"
  Driver Modules: "iwl3945"
  Device File: wlan0
  Features: WLAN
  Memory Range: 0xf8100000-0xf8100fff (rw,non-prefetchable)
  IRQ: 45 (535 events)
  HW Address: 00:1c:bf:a4:ae:11
  Link detected: no
  WLAN channels: 1 2 3 4 5 6 7 8 9 10 11 36 40 44 48 52 56 60 64 149 153 157 161 165
  WLAN frequencies: 2.412 2.417 2.422 2.427 2.432 2.437 2.442 2.447 2.452 2.457 2.462 5.18 5.2 5.22 5.24 5.26 5.28 5.3 5.32 5.745 5.765 5.785 5.805 5.825
  WLAN encryption modes: WEP40 WEP104 TKIP CCMP
  WLAN authentication modes: open sharedkey wpa-psk wpa-eap
  Module Alias: "pci:v00008086d00004222sv00008086sd00001000bc02sc80i00"
  Driver Info #0:
    Driver Status: iwl3945 is active
    Driver Activation Cmd: "modprobe iwl3945"
  Config Status: cfg=new, avail=yes, need=no, active=unknown
  Attached to: #15 (PCI bridge)
Module Size Used by
rfcomm 33811 4
binfmt_misc 6599 1
sco 7998 2
bnep 9542 2
l2cap 37008 16 rfcomm,bnep
parport_pc 26058 0
ppdev 5556 0
snd_hda_codec_idt 54919 1
snd_hda_intel 22235 2
snd_hda_codec 87552 2 snd_hda_codec_idt,snd_hda_intel
snd_hwdep 5040 1 snd_hda_codec
snd_pcm 71475 2 snd_hda_intel,snd_hda_codec
snd_seq_midi 4588 0
snd_rawmidi 17783 1 snd_seq_midi
snd_seq_midi_event 6047 1 snd_seq_midi
snd_seq 47174 2 snd_seq_midi,snd_seq_midi_event
snd_timer 19067 2 snd_pcm,snd_seq
joydev 8767 0
snd_seq_device 5744 3 snd_seq_midi,snd_rawmidi,snd_seq
pcmcia 35973 0
arc4 1165 2
snd 49038 13 snd_hda_codec_idt,snd_hda_intel,snd_hda_codec,snd_hwdep,snd_pcm,snd_rawmidi,snd_seq,snd_timer,snd_seq_device
btusb 10969 2
bluetooth 50500 9 rfcomm,sco,bnep,l2cap,btusb
soundcore 880 1 snd
yenta_socket 21518 0
pcmcia_rsrc 10566 1 yenta_socket
radeon 829255 3
iwl3945 85550 0
iwlcore 127415 1 iwl3945
ttm 56633 1 radeon
drm_kms_helper 30200 1 radeon
mac80211 231959 2 iwl3945,iwlcore
drm 168060 5 radeon,ttm,drm_kms_helper
tifm_7xx1 3766 0
snd_page_alloc 7120 2 snd_hda_intel,snd_pcm
i2c_algo_bit 5168 1 radeon
psmouse 59033 0
video 18712 0
lp 7342 0
serio_raw 4022 0
cfg80211 144694 3 iwl3945,iwlcore,mac80211
intel_agp 26566 0
agpgart 32011 3 ttm,drm,intel_agp
pcmcia_core 14657 3 pcmcia,yenta_socket,pcmcia_rsrc
tifm_core 6089 1 tifm_7xx1
output 1883 1 video
parport 31492 3 parport_pc,ppdev,lp
e1000e 132956 0
firewire_ohci 21234 0
ahci 19198 2
sdhci_pci 6601 0
sdhci 15922 1 sdhci_pci
firewire_core 46643 1 firewire_ohci
crc_itu_t 1383 1 firewire_core
led_class 2633 1 sdhci
libahci 21728 1 ahci

[main]
NetworkingEnabled=true
WirelessEnabled=true
WWANEnabled=true
Ignoring unknown interface eth0=eth0.

William Karavites said on 2011-03-18:
Here is some more system info:

http://imgur.com/oy3TK

It is a Gateway Tablet C-142-XL

Mark Rijckenberg said on 2011-03-18:
Please first execute these steps:

Step 1) run the following command in a Terminal:

sudo touch /etc/modprobe.d/iwl3945.conf

gksudo gedit /etc/modprobe.d/iwl3945.conf

Step 2) Using the gedit editor, add the following configuration lines into the /etc/modprobe.d/iwl3945.conf file:

alias wlan0 iwl3945
options iwl3945 disable_hw_scan=1 hwcrypto=1

Step 3) Then reboot and retest wireless.

If that does not help, please try this procedure:

http://ubuntuforums.org/showpost.php?p=9102317&postcount=6

Then reboot and retest wireless again.

William Karavites said 14 minutes ago:
I tried that and now my wireless doesn't work at all. It wont recognize ANY wireless networks lol.