!WiFi is very flaky with my Lenovo 3000 N100.<<BR>>
I'm running Kubuntu Gutsy.<<BR>>
It uses a PRO/Wireless 3945ABG card.<<BR>>
Below are the output of some commands with a possible fix at the end.
~-{{{
$ sudo lspci -vvv
-----------------
03:00.0 Network controller: Intel Corporation PRO/Wireless 3945ABG Network Connection (rev 02)
Subsystem: Intel Corporation Unknown device 1010
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B-
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR-
Latency: 0, Cache Line Size: 64 bytes
Interrupt: pin A routed to IRQ 17
Region 0: Memory at d0000000 (32-bit, non-prefetchable) [size=4K]
Capabilities: [c8] Power Management version 2
Flags: PMEClk- DSI+ D1- D2- AuxCurrent=0mA PME(D0+,D1-,D2-,D3hot+,D3cold+)
Status: D0 PME-Enable- DSel=0 DScale=0 PME-
Capabilities: [d0] Message Signalled Interrupts: Mask- 64bit+ Queue=0/0 Enable-
Address: 0000000000000000 Data: 0000
Capabilities: [e0] Express Legacy Endpoint IRQ 0
Device: Supported: MaxPayload 128 bytes, PhantFunc 0, ExtTag-
Device: Latency L0s <512ns, L1 unlimited
Device: AtnBtn- AtnInd- PwrInd-
Device: Errors: Correctable- Non-Fatal- Fatal- Unsupported-
Device: RlxdOrd+ ExtTag- PhantFunc- AuxPwr- NoSnoop+
Device: MaxPayload 128 bytes, MaxReadReq 128 bytes
Link: Supported Speed 2.5Gb/s, Width x1, ASPM L0s L1, Port 0
Link: Latency L0s <128ns, L1 <64us
Link: ASPM L0s L1 Enabled RCB 64 bytes CommClk+ ExtSynch-
Link: Speed 2.5Gb/s, Width x1
$ iwconfig > ipw3945.out
------------------------
eth1 IEEE 802.11g ESSID:"TetraSys"
Mode:Managed Frequency:2.437 GHz Access Point: 00:1A:70:87:A9:84
Bit Rate:54 Mb/s Tx-Power:15 dBm
Retry limit:15 RTS thr:off Fragment thr:off
Power Management:off
Link Quality=93/100 Signal level=-40 dBm Noise level=-41 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:1696 Missed beacon:0
$ sudo lshw -C network >> ipw3945.out
-----------------------------------
*-network
description: Wireless interface
product: PRO/Wireless 3945ABG Network Connection
vendor: Intel Corporation
physical id: 0
bus info: pci@0000:03:00.0
logical name: eth1
version: 02
serial: 00:18:de:0c:f7:b7
width: 32 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=ipw3945 driverversion=1.2.2mp firmware=14.2 1:0 () ip=192.168.2.103 latency=0 link=yes module=ipw3945 multicast=yes wireless=IEEE 802.11g
*-network
description: Ethernet interface
product: RTL-8139/8139C/8139C+
vendor: Realtek Semiconductor Co., Ltd.
physical id: 1
bus info: pci@0000:05:01.0
logical name: eth0
version: 10
serial: 00:0f:b0:cc:2f:1d
size: 10MB/s
capacity: 100MB/s
width: 32 bits
clock: 33MHz
capabilities: pm bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=8139too driverversion=0.9.28 duplex=half latency=64 link=no maxlatency=64 mingnt=32 module=8139too multicast=yes port=MII speed=10MB/s
$ iwlist eth1 scan
------------------
eth1 Scan completed :
Cell 01 - Address: 00:1A:70:87:A9:84
ESSID:"TetraSys"
Protocol:IEEE 802.11bg
Mode:Master
Channel:6
Frequency:2.437 GHz (Channel 6)
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=96/100 Signal level=-32 dBm Noise level=-32 dBm
IE: WPA Version 1
Group Cipher : WEP-40
Pairwise Ciphers (1) : WEP-40
Authentication Suites (1) : PSK
Extra: Last beacon: 12ms ago
## TRY THIS ##
$ sudo nano /etc/modprobe.d/blacklist
Add Lines
#still trying to fix the gd wireless (or some other comment so you rememberwhy it was done)
blacklist ipv6
}}}-~