My laptop wireless connection is erratic since upgrading to ubuntu ver 12.

Hi Frank I had this same issue and what worked for me was logging in to my Wireless Router and turning down the speed to 54g.. give that a try and let me know.. :)

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

Thanks sladner84, I tried many times but the flwg. msg.n "Authentication required by wireless network
Password or encryption keys are required to access the wireless network '............'" still pops up after a few seconds.

I don't have a speed adjuster on my router.

Maybe the next version can solve my problem :)

Meanwhile, I'll be using my desktop unless another solution comes along.

Thanks and warmest regards,

Frank.

One last time:

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

Thank you Mark.

FYI, I'm trying to execute your commands from step 1 to 4. But so far, step 1 looks the most difficult.

On my screen I don't have Gnome interface. What I have on my left are icons, "Dash Home", "Home Folder", "Firefox Web Browser", "LibreOfficer Writer", LibreOffice Calc", LibreOffice Impresws", "Ubuntu Softwaare Centre", "Ubuntu One", System Settings" "Work Spaces" and "Rubbish Bin".

On top of the screen I have pull downs menus "File", "Edit", "View", "History", "Bookmarks", "Tools", "Help".

Please advise and sorry to be such a noob, I am more familiar with ms windows.

Google search is our friend:

http://mixeduperic.com/linux/how-to-open-a-terminal-window-in-unity.html

http://www.psychocats.net/ubuntu/terminal

Hi Mark,

I have installed the command that you provided i.e.

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

After installing the above, I rebooted the laptop, but the problem is not solved. The connection is erratic and a dialogue box keep asking to retype my password.

FYI my Laptop is an IBM Thinkpad , Memory 1.2 GIB, Processor Intel Pentium (R) M Processor, 1.70 GHz.
OS Type 32 bit, Disk 38.2 GB.

Thanks.

Please carefully reread the instructions I gave you. I did NOT ask you to give your interpretation of the results. I asked you to send us the full Terminal output of the large command I gave you.

We need the full output of following command:

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

Please copy-paste the Terminal output of the command here:

https://answers.launchpad.net/ubuntu/+source/gnome-nettool/+question/197078

The instructions should be clear.

You skipped step 3:

 "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."

                    Frequency:2.432 GHz (Channel 5)
                    Encryption key:on
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s
                              9 Mb/s; 12 Mb/s; 18 Mb/s; 24 Mb/s; 36 Mb/s
                              48 Mb/s; 54 Mb/s
                    Quality=33/100 Signal level=-80 dBm
                    IE: WPA Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (1) : TKIP
                        Authentication Suites (1) : 802.1x
                    Extra: Last beacon: 2072ms ago
          Cell 15 - Address: 72:54:99:4A:8D:EC
                    ESSID:"HG256-4A8DED"
                    Protocol:IEEE 802.11bg
                    Mode:Master
                    Frequency:2.462 GHz (Channel 11)
                    Encryption key:on
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 6 Mb/s; 11 Mb/s
                              9 Mb/s; 12 Mb/s; 18 Mb/s; 24 Mb/s; 36 Mb/s
                              48 Mb/s; 54 Mb/s
                    Quality=35/100 Signal level=-79 dBm
                    IE: WPA Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
                    Extra: Last beacon: 11044ms ago
          Cell 16 - Address: 00:03:52:9E:64:10
                    ESSID:"Wireless@SG"
                    Protocol:IEEE 802.11bg
                    Mode:Master
                    Frequency:2.432 GHz (Channel 5)
                    Encryption key:off
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s
                              9 Mb/s; 12 Mb/s; 18 Mb/s; 24 Mb/s; 36 Mb/s
                              48 Mb/s; 54 Mb/s
                    Quality=67/100 Signal level=-80 dBm
                    Extra: Last beacon: 2072ms ago
          Cell 17 - Address: 00:1F:33:BB:73:FC
                    ESSID:"meera84"
                    Protocol:IEEE 802.11bg
                    Mode:Master
                    Frequency:2.462 GHz (Channel 11)
                    Encryption key:on
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 6 Mb/s; 9 Mb/s
                              11 Mb/s; 12 Mb/s; 18 Mb/s; 24 Mb/s; 36 Mb/s
                              48 Mb/s; 54 Mb/s
                    Quality=31/100 Signal level=-81 dBm
                    IE: WPA Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (2) : CCMP TKIP
                        Authentication Suites (1) : PSK
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (2) : CCMP TKIP
                        Authentication Suites (1) : PSK
                    Extra: Last beacon: 6472ms ago
          Cell 18 - Address: C4:10:8A:19:78:49
                    ESSID:"ALSAGOFF"
                    Protocol:IEEE 802.11bg
                    Mode:Master
                    Frequency:2.462 GHz (Channel 11)
                    Encryption key:on
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 6 Mb/s; 9 Mb/s
                              11 Mb/s; 12 Mb/s; 18 Mb/s; 24 Mb/s; 36 Mb/s
                              48 Mb/s; 54 Mb/s
                    Quality=31/100 Signal level=-81 dBm
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
                    Extra: Last beacon: 9892ms ago
          Cell 19 - Address: 00:14:BF:C2:E7:0A
                    ESSID:"Indian"
                    Protocol:IEEE 802.11g
                    Mode:Master
                    Frequency:2.462 GHz (Channel 11)
                    Encryption key:on
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 6 Mb/s; 9 Mb/s
                              11 Mb/s; 12 Mb/s; 18 Mb/s; 24 Mb/s; 36 Mb/s
                              48 Mb/s; 54 Mb/s
                    Quality=31/100 Signal level=-81 dBm
                    IE: WPA Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (1) : TKIP
                        Authentication Suites (1) : PSK
                    Extra: Last beacon: 4224ms ago
          Cell 20 - Address: F8:D1:11:2E:BA:C2
                    ESSID:"TP-LINK_2EBAC2"
                    Protocol:IEEE 802.11bg
                    Mode:Master
                    Frequency:2.452 GHz (Channel 9)
                    Encryption key:on
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s
                              9 Mb/s; 12 Mb/s; 18 Mb/s; 24 Mb/s; 36 Mb/s
                              48 Mb/s; 54 Mb/s
                    Quality=37/100 Signal level=-78 dBm
                    IE: WPA Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
                    Extra: Last beacon: 4864ms ago
          Cell 21 - Address: 98:2C:BE:71:EA:F2
                    ESSID:"SINGTEL-5091"
                    Protocol:IEEE 802.11bg
                    Mode:Master
                    Frequency:2.447 GHz (Channel 8)
                    Encryption key:on
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 6 Mb/s; 9 Mb/s
                              11 Mb/s; 12 Mb/s; 18 Mb/s; 24 Mb/s; 36 Mb/s
                              48 Mb/s; 54 Mb/s
                    Quality=35/100 Signal level=-79 dBm
                    IE: WPA Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (2) : CCMP TKIP
                        Authentication Suites (1) : PSK
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (2) : CCMP TKIP
                        Authentication Suites (1) : PSK
                    Extra: Last beacon: 6552ms ago
          Cell 22 - Address: 94:0C:6D:A3:16:7D
                    ESSID:"Empire Motor"
                    Protocol:IEEE 802.11bg
                    Mode:Master
                    Frequency:2.412 GHz (Channel 1)
                    Encryption key:on
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s
                              9 Mb/s; 12 Mb/s; 18 Mb/s; 24 Mb/s; 36 Mb/s
                              48 Mb/s; 54 Mb/s
                    Quality=31/100 Signal level=-81 dBm
                    Extra: Last beacon: 5624ms ago
          Cell 23 - Address: 02:11:87:24:D2:00
                    ESSID:"Free Public WiFi"
                    Protocol:IEEE 802.11g
                    Mode:Ad-Hoc
                    Frequency:2.412 GHz (Channel 1)
                    Encryption key:off
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 6 Mb/s; 9 Mb/s
                              11 Mb/s; 12 Mb/s; 18 Mb/s; 24 Mb/s; 36 Mb/s
                              48 Mb/s; 54 Mb/s
                    Quality=35/100 Signal level=-79 dBm
                    Extra: Last beacon: 1060ms ago
          Cell 24 - Address: 00:02:6F:CC:69:44
                    ESSID:"Hao Jun M1"
                    Protocol:IEEE 802.11bg
                    Mode:Master
                    Frequency:2.447 GHz (Channel 8)
                    Encryption key:on
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 6 Mb/s; 11 Mb/s
                              9 Mb/s; 12 Mb/s; 18 Mb/s; 24 Mb/s; 36 Mb/s
                              48 Mb/s; 54 Mb/s
                    Quality=33/100 Signal level=-80 dBm
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
                    Extra: Last beacon: 4296ms ago
          Cell 25 - Address: F4:EC:38:F2:8C:6A
                    ESSID:"Research"
                    Protocol:IEEE 802.11bg
                    Mode:Master
                    Frequency:2.427 GHz (Channel 4)
                    Encryption key:on
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s
                              9 Mb/s; 12 Mb/s; 18 Mb/s; 24 Mb/s; 36 Mb/s
                              48 Mb/s; 54 Mb/s
                    Quality=37/100 Signal level=-78 dBm
                    Extra: Last beacon: 3860ms ago
          Cell 26 - Address: 00:02:6F:B4:3B:0B
                    ESSID:"theaxis"
                    Protocol:IEEE 802.11bg
                    Mode:Master
                    Frequency:2.457 GHz (Channel 10)
                    Encryption key:on
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s
                              9 Mb/s; 12 Mb/s; 18 Mb/s; 24 Mb/s; 36 Mb/s
                              48 Mb/s; 54 Mb/s
                    Quality=37/100 Signal level=-78 dBm
                    IE: WPA Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (1) : TKIP
                        Authentication Suites (1) : PSK
                    Extra: Last beacon: 6500ms ago
          Cell 27 - Address: 00:22:A4:78:7A:E1
                    ESSID:"leefamily"
                    Protocol:IEEE 802.11bg
                    Mode:Master
                    Frequency:2.452 GHz (Channel 9)
                    Encryption key:on
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 6 Mb/s; 9 Mb/s
                              11 Mb/s; 12 Mb/s; 18 Mb/s; 24 Mb/s; 36 Mb/s
                              48 Mb/s; 54 Mb/s
                    Quality=70/100 Signal level=-58 dBm
                    Extra: Last beacon: 232ms ago

eth0 Interface doesn't support scanning.

auto lo
iface lo inet loopback

DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=12.04
DISTRIB_CODENAME=precise
DISTRIB_DESCRIPTION="Ubuntu 12.04 LTS"
00:00.0 Host bridge [0600]: Intel Corporation 82852/82855 GM/GME/PM/GMV Processor to I/O Controller [8086:3580] (rev 02)
00:00.1 System peripheral [0880]: Intel Corporation 82852/82855 GM/GME/PM/GMV Processor to I/O Controller [8086:3584] (rev 02)
00:00.3 System peripheral [0880]: Intel Corporation 82852/82855 GM/GME/PM/GMV Processor to I/O Controller [8086:3585] (rev 02)
00:02.0 VGA compatible controller [0300]: Intel Corporation 82852/855GM Integrated Graphics Device [8086:3582] (rev 02)
00:02.1 Display controller [0380]: Intel Corporation 82852/855GM Integrated Graphics Device [8086:3582] (rev 02)
00:1d.0 USB controller [0c03]: Intel Corporation 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) USB UHCI Controller #1 [8086:24c2] (rev 01)
00:1d.1 USB controller [0c03]: Intel Corporation 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) USB UHCI Controller #2 [8086:24c4] (rev 01)
00:1d.2 USB controller [0c03]: Intel Corporation 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) USB UHCI Controller #3 [8086:24c7] (rev 01)
00:1d.7 USB controller [0c03]: Intel Corporation 82801DB/DBM (ICH4/ICH4-M) USB2 EHCI Controller [8086:24cd] (rev 01)
00:1e.0 PCI bridge [0604]: Intel Corporation 82801 Mobile PCI Bridge [8086:2448] (rev 81)
00:1f.0 ISA bridge [0601]: Intel Corporation 82801DBM (ICH4-M) LPC Interface Bridge [8086:24cc] (rev 01)
00:1f.1 IDE interface [0101]: Intel Corporation 82801DBM (ICH4-M) IDE Controller [8086:24ca] (rev 01)
00:1f.3 SMBus [0c05]: Intel Corporation 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) SMBus Controller [8086:24c3] (rev 01)
00:1f.5 Multimedia audio controller [0401]: Intel Corporation 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) AC'97 Audio Controller [8086:24c5] (rev 01)
00:1f.6 Modem [0703]: Intel Corporation 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) AC'97 Modem Controller [8086:24c6] (rev 01)
02:00.0 CardBus bridge [0607]: Texas Instruments PCI1510 PC card Cardbus Controller [104c:ac56]
02:02.0 Network controller [0280]: Intel Corporation PRO/Wireless 2200BG [Calexico2] Network Connection [8086:4220] (rev 05)
02:08.0 Ethernet controller [0200]: Intel Corporation 82801DB PRO/100 VE (MOB) Ethernet Controller [8086:103d] (rev 81)
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 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 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 002: ID 046d:c019 Logitech, Inc. Optical Tilt Wheel Mouse
H/W path Device Class Description
=========================================================
                               system Notebook
/0 bus 1834A58
/0/0 memory 144KiB BIOS
/0/6 processor Intel(R) Pentium(R) M processor 1.70GHz
/0/6/a memory 32KiB L1 cache
/0/6/b memory 2MiB L2 cache
/0/25 memory 1280MiB System Memory
/0/25/0 memory 256MiB SODIMM DDR Synchronous
/0/25/1 memory 1GiB SODIMM DDR Synchronous
/0/100 bridge 82852/82855 GM/GME/PM/GMV Processor to I/O Controller
/0/100/0.1 generic 82852/82855 GM/GME/PM/GMV Processor to I/O Controller
/0/100/0.3 generic 82852/82855 GM/GME/PM/GMV Processor to I/O Controller
/0/100/2 display 82852/855GM Integrated Graphics Device
/0/100/2.1 display 82852/855GM Integrated Graphics Device
/0/100/1d bus 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) USB UHCI Controller #1
/0/100/1d.1 bus 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) USB UHCI Controller #2
/0/100/1d.2 bus 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) USB UHCI Controller #3
/0/100/1d.7 bus 82801DB/DBM (ICH4/ICH4-M) USB2 EHCI Controller
/0/100/1e bridge 82801 Mobile PCI Bridge
/0/100/1e/0 bridge PCI1510 PC card Cardbus Controller
/0/100/1e/2 eth1 network PRO/Wireless 2200BG [Calexico2] Network Connection
/0/100/1e/8 eth0 network 82801DB PRO/100 VE (MOB) Ethernet Controller
/0/100/1f bridge 82801DBM (ICH4-M) LPC Interface Bridge
/0/100/1f.1 scsi0 storage 82801DBM (ICH4-M) IDE Controller
/0/100/1f.1/0 /dev/sda disk 40GB HTS541040G9AT00
/0/100/1f.1/0/1 /dev/sda1 volume 35GiB EXT4 volume
/0/100/1f.1/0/2 /dev/sda2 volume 1610MiB Extended partition
/0/100/1f.1/0/2/5 /dev/sda5 volume 1610MiB Linux swap / Solaris partition
/0/100/1f.1/1 /dev/cdrom disk DVD/CDRW UJDA770
/0/100/1f.3 bus 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) SMBus Controller
/0/100/1f.5 multimedia 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) AC'97 Audio Controller
/0/100/1f.6 communication 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) AC'97 Modem Controller
Linux susan 3.2.0-24-generic #37-Ubuntu SMP Wed Apr 25 08:43:52 UTC 2012 i686 i686 i386 GNU/Linux
[ 0.000000] Found optimal setting for mtrr clean up
[ 0.000000] APIC: switched to apic NOOP
[ 0.000000] Kernel command line: BOOT_IMAGE=/boot/vmlinuz-3.2.0-24-generic root=UUID=8e19bc60-8946-467b-9c73-c0d5b43364c2 ro quiet splash vt.handoff=7
[ 0.008087] SMP alternatives: switching to UP code
[ 0.039519] ACPI: EC: EC description table is found, configuring boot EC
[ 0.052610] ACPI: No dock devices found.
[ 0.052613] HEST: Table not found.
[ 0.060268] i2c-core: driver [aat2870] using legacy suspend method
[ 0.060270] i2c-core: driver [aat2870] using legacy resume method
[ 0.060518] usbcore: registered new interface driver usbfs
[ 0.060540] usbcore: registered new interface driver hub
[ 0.060573] usbcore: registered new device driver usb
[ 0.061107] Switching to clocksource pit
[ 0.073620] pnp: PnP ACPI: found 10 devices
[ 0.110861] Switching to clocksource acpi_pm
[ 0.115856] pci 0000:02:08.0: Firmware left e100 interrupts enabled; disabling
[ 0.245485] input: Lid Switch as /devices/LNXSYSTM:00/device:00/PNP0C0D:00/input/input0
[ 0.245634] ACPI: Lid Switch [LID]
[ 0.254051] ERST: Table is not found!
[ 0.348339] hub 1-0:1.0: USB hub found
[ 0.348836] hub 2-0:1.0: USB hub found
[ 0.349192] hub 3-0:1.0: USB hub found
[ 0.349540] hub 4-0:1.0: USB hub found
[ 0.349686] usbcore: registered new interface driver libusual
[ 0.823739] isapnp: No Plug & Play device found
[ 0.996484] usb 3-2: new low-speed USB device number 2 using uhci_hcd
[ 1.233131] BIOS EDD facility v0.16 2004-Jun-25, 0 devices found
[ 1.549604] e100 0000:02:08.0: eth0: addr 0xd0201000, irq 11, MAC addr 00:0a:e4:c4:99:d2
[ 1.575839] input: Logitech USB Optical Mouse as /devices/pci0000:00/0000:00:1d.1/usb3/3-2/3-2:1.0/input/input5
[ 1.577249] generic-usb 0003:046D:C019.0001: input,hidraw0: USB HID v1.11 Mouse [Logitech USB Optical Mouse] on usb-0000:00:1d.1-2/input0
[ 1.577276] usbcore: registered new interface driver usbhid
[ 1.577279] usbhid: USB HID core driver
[ 2.071093] Console: switching to colour frame buffer device 128x48
[ 22.309125] ADDRCONF(NETDEV_UP): eth0: link is not ready
[ 22.444310] lp: driver loaded but no devices found
[ 23.366715] yenta_cardbus 0000:02:00.0: CardBus bridge found [1014:0512]
[ 23.370351] ADDRCONF(NETDEV_UP): eth0: link is not ready
[ 23.371176] ADDRCONF(NETDEV_UP): eth0: link is not ready
[ 23.454031] libipw: 802.11 data/management/control stack, git-1.1.13
[ 23.454037] libipw: Copyright (C) 2004-2005 Intel Corporation <email address hidden>
[ 23.473200] ipw2200: Intel(R) PRO/Wireless 2200/2915 Network Driver, 1.2.2kmprq
[ 23.473206] ipw2200: Copyright(c) 2003-2006 Intel Corporation
[ 23.855950] IBM TrackPoint firmware: 0x0e, buttons: 3/3
[ 23.872746] ADDRCONF(NETDEV_UP): eth0: link is not ready
[ 24.013965] ipw2200 0000:02:02.0: PCI INT A -> Link[LNKF] -> GSI 11 (level, low) -> IRQ 11
[ 24.014000] ipw2200: Detected Intel PRO/Wireless 2200BG Network Connection
[ 24.038042] thinkpad_acpi: WARNING: Outdated ThinkPad BIOS/EC firmware
[ 24.038044] thinkpad_acpi: WARNING: This firmware may be missing critical bug fixes and/or important features
[ 24.113717] thinkpad_acpi: brightness: please report to <email address hidden> whether it works well or not on your ThinkPad
[ 24.514711] ipw2200: Detected geography ZZR (14 802.11bg channels, 0 802.11a channels)
[ 109.820177] e100 0000:02:08.0: eth0: NIC Link is Up 100 Mbps Full Duplex
[ 109.820833] ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
[ 120.032049] eth0: no IPv6 routers present
 Release Date: 11/15/2005
  Serial services are supported (int 14h)
 Manufacturer: IBM
 Product Name: 1834A58
 Serial Number: LVAW148
 Manufacturer: IBM
 Product Name: 1834A58
 Serial Number: 1ZB6L61L200
 Manufacturer: IBM
 Serial Number: Not Available
 Manufacturer: GenuineIntel
 Serial Number: Not Specified
 Manufacturer: Not Specified
 Serial Number: Not Specified
 Manufacturer: Not Specified
 Serial Number: Not Specified
lo no wireless extensions.

eth1 IEEE 802.11bg ESSID:"p\xE9>\xA1A\xE1\xFCg>\x01~\x97\xEA\xDCk\x96\x8F8\*\xEC\xB0;\xFB2\xAF<T\xEC\x18\xDB\"
          Mode:Managed Frequency:2.432 GHz Access Point: Not-Associated
          Bit Rate:0 kb/s Tx-Power=20 dBm Sensitivity=8/0
          Retry limit:7 RTS thr:off Fragment thr:off
          Power Management:off
          Link Quality:0 Signal level:0 Noise level:0
          Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
          Tx excessive retries:0 Invalid misc:0 Missed beacon:0

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
blacklist eth1394
# replaced by p54pci
blacklist prism54
# replaced by b43 and ssb.
blacklist bcm43xx
blacklist uart6850
blacklist twl4030_wdt

[main]
NetworkingEnabled=true
WirelessEnabled=false
WWANEnabled=true
> hal.1: read hal dataprocess 2260: 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
25: PCI 202.0: 0282 WLAN controller
  [Created at pci.318]
  Unique ID: JNkJ.yFKtihCJThD
  Parent ID: 6NW+.+ISWpD3pbdC
  SysFS ID: /devices/pci0000:00/0000:00:1e.0/0000:02:02.0
  SysFS BusID: 0000:02:02.0
  Hardware Class: network
  Model: "Intel IBM ThinkPad R50e"
  Vendor: pci 0x8086 "Intel Corporation"
  Device: pci 0x4220 "PRO/Wireless 2200BG [Calexico2] Network Connection"
  SubVendor: pci 0x8086 "Intel Corporation"
  SubDevice: pci 0x2712 "IBM ThinkPad R50e"
  Revision: 0x05
  Driver: "ipw2200"
  Driver Modules: "ipw2200"
  Device File: eth1
  Features: WLAN
  Memory Range: 0xd0200000-0xd0200fff (rw,non-prefetchable)
  IRQ: 11 (226632 events)
  HW Address: 00:16:6f:0d:e8:a5
  Link detected: no
  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 11 6 9 12 18 24 36 48 54
  WLAN encryption modes: WEP40 WEP104 TKIP CCMP
  WLAN authentication modes: open sharedkey wpa-psk wpa-eap
  Requires: ipw-firmware
  Module Alias: "pci:v00008086d00004220sv00008086sd00002712bc02sc80i00"
  Driver Info #0:
    Driver Status: ipw2200 is active
    Driver Activation Cmd: "modprobe ipw2200"
  Config Status: cfg=new, avail=yes, need=no, active=unknown
  Attached to: #18 (PCI bridge)

26: PCI 208.0: 0200 Ethernet controller
  [Created at pci.318]
  Unique ID: rBUF.j_9oCd4cXw8
  Parent ID: 6NW+.+ISWpD3pbdC
  SysFS ID: /devices/pci0000:00/0000:00:1e.0/0000:02:08.0
  SysFS BusID: 0000:02:08.0
  Hardware Class: network
  Model: "IBM ThinkPad R40"
  Vendor: pci 0x8086 "Intel Corporation"
  Device: pci 0x103d "82801DB PRO/100 VE (MOB) Ethernet Controller"
  SubVendor: pci 0x1014 "IBM"
  SubDevice: pci 0x0522 "ThinkPad R40"
  Revision: 0x81
  Driver: "e100"
  Driver Modules: "e100"
  Device File: eth0
  Memory Range: 0xd0201000-0xd0201fff (rw,non-prefetchable)
  I/O Ports: 0x7000-0x703f (rw)
  IRQ: 11 (226632 events)
  HW Address: 00:0a:e4:c4:99:d2
  Link detected: yes
  Module Alias: "pci:v00008086d0000103Dsv00001014sd00000522bc02sc00i00"
  Driver Info #0:
    Driver Status: e100 is active
    Driver Activation Cmd: "modprobe e100"
  Driver Info #1:
    Driver Status: eepro100 is not active
    Driver Activation Cmd: "modprobe eepro100"
  Config Status: cfg=new, avail=yes, need=no, active=unknown
  Attached to: #18 (PCI bridge)
Warning: bad ps syntax, perhaps a bogus '-'? See http://procps.sf.net/faq.html
root 571 0.0 0.4 31176 5212 ? Ssl 20:11 0:00 NetworkManager
root 987 0.0 0.1 5940 2108 ? Ss 20:11 0:00 /sbin/wpa_supplicant -B -P /run/sendsigs.omit.d/wpasupplicant.pid -u -s -O /var/run/wpa_supplicant
root 1450 0.0 0.0 2908 1256 ? S 20:13 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-75b59fca-f2b6-42bb-b1a5-d897793dcc29-eth0.lease -cf /var/run/nm-dhclient-eth0.conf eth0
nobody 1454 0.0 0.0 5384 1140 ? S 20:13 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
susan 2276 0.0 0.0 4368 788 pts/0 S+ 20:50 0:00 egrep --color=auto wpa|icd|etwork
Module Size Used by
joydev 17393 0
dm_crypt 22528 0
snd_intel8x0 33455 2
snd_ac97_codec 106082 1 snd_intel8x0
ac97_bus 12642 1 snd_ac97_codec
snd_pcm 80845 2 snd_intel8x0,snd_ac97_codec
thinkpad_acpi 73942 0
pcmcia 39791 0
snd_seq_midi 13132 0
snd_rawmidi 25424 1 snd_seq_midi
snd_seq_midi_event 14475 1 snd_seq_midi
snd_seq 51567 2 snd_seq_midi,snd_seq_midi_event
ipw2200 146176 0
libipw 46701 1 ipw2200
snd_timer 28931 2 snd_pcm,snd_seq
snd_seq_device 14172 3 snd_seq_midi,snd_rawmidi,snd_seq
psmouse 87213 0
cfg80211 178679 2 ipw2200,libipw
yenta_socket 27428 0
pcmcia_rsrc 18367 1 yenta_socket
pcmcia_core 21511 3 pcmcia,yenta_socket,pcmcia_rsrc
snd 62064 12 snd_intel8x0,snd_ac97_codec,snd_pcm,thinkpad_acpi,snd_rawmidi,snd_seq,snd_timer,snd_seq_device
serio_raw 13027 0
lib80211 14040 2 ipw2200,libipw
snd_page_alloc 14115 2 snd_intel8x0,snd_pcm
soundcore 14635 1 snd
rfcomm 38139 0
shpchp 32325 0
nvram 14029 1 thinkpad_acpi
bnep 17830 2
bluetooth 158438 10 rfcomm,bnep
parport_pc 32114 1
ppdev 12849 0
binfmt_misc 17292 1
mac_hid 13077 0
lp 17455 0
parport 40930 3 parport_pc,ppdev,lp
i915 414568 2
e100 36289 0
usbhid 41906 0
hid 77367 1 usbhid
drm_kms_helper 45466 1 i915
drm 197692 3 i915,drm_kms_helper
i2c_algo_bit 13199 1 i915
video 19068 1 i915
susan@susan:~$

I suggest the following:

1) Log into your wireless router

2) temporarily disable encryption and enable SSID broadcasting on your wireless access point (unhide the SSID, if the SSID is hidden)

3) change the SSID name to something simple, without spaces or special characters in the SSID name

4) force the router to use Wireless-G transmission speeds (54MB/s)

5) change the wireless transmission channel to a unique channel number that is NOT being used by the 26 (!!!!!!!!!) other wireless access points. It is likely that wireless interference from other wireless access points is causing the wireless disconnects to occur.

6) install wicd as a replacement for NetworkManager. Set eth1 as wireless interface name in the wicd configuration panel.
Run this command in a Terminal to install wicd:

sudo apt-get update && sudo apt-get install wicd

Then reboot and retest wireless.

Your wireless issue might be linked to the following bugreport:

https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/908380

So I also suggest this workaround, which can be used in combination with my previous suggestions:

https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/908380/comments/61