Debian (Knoppix) Wireless Card Stopped Working

Hey Everyone,

I'm new to Linux and having difficulty with my wireless card.

I have Knoppix installed to my harddrive and am using an SMC 2632W 802.11b wireless card.

The wireless card was working fine until I went to a conference the other day.  It would not sync up to the wireless AP at the conference, so I ran the "Wavelan" configuration utility.   Boom - it picked up the AP and I was in good shape.

But now that I have returned home, my wireless card no longer works.  I have a solid light on my wireless card, so I know it has associated with my AP at home.  However, when I try to go to the Internet, I get nothing.  Additionally, now when I run the "Wavelan Configuration" program, it says "No Wireless network card found".

If I boot from the Knoppix LIVE CD, the wireless card works fine.  

So somehow, I guess my configuration has gotten out of whack.  I have done quite a bit of searching on google, but I can not figure out how to "reset" my configuration...... I've looked in "etc/pcmcia" in the config, wireless.opts, and a few other files but I do not see anything out of whack.

When the system is first booting up, the feedback on the screen shows "eth0, eth1" up and running, does a few things, then I see a line that says "(RE)starting network services" and everything after that regarding networking fails.

Can someone point me in the right direction on this?
DavehudsnAsked:
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wesly_chenCommented:
Hi,

  Could you post those information?
cat /etc/network/interfaces
ifconfig -a
dmesg  | grep -i eth
lspci -v

And turn off WEP or WPA on the wireless AP if you have those setting.

Wesly
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DavehudsnAuthor Commented:
Hi Wesly --

I have good news / bad news.

The good news is that I just happened to have backed up my system the night before the conference.   I used Norton Ghost, so don't hold it against me ;-)

Anyway, i got frustrated trying to get the wireless working again, so i just restored my system from the previous backup since i didn't really have any new data since the backup.  I also wanted to see if Norton Ghost would really restore my Linux build..... turns out that it worked great and my system is running great, including that fact that wireless is now working again.

So, having said all that, I guess the part I am unclear on is how running "wavelan configuration" wiped out my wireless card.  If you (or someone) could explain to me the following, i would be greatly appreciative:

1)  What does wavelan change?  Why would my wireless card config get wiped out?

2)  What is the proper way to force your wireless card to pick up a new Access Point?  Should i use something like iwconfig to "sense out" or accept a new access point?

Thanks,
Dave

Below is the output of what you asked for, just for completeness, although this is with my "restored" version, which is working:

# /etc/network/interfaces -- configuration file for ifup(8), ifdown(8)

# The loopback interface
# automatically added when upgrading
auto lo
iface lo inet loopback

eth0      Link encap:Ethernet  HWaddr 00:E0:29:9E:4C:C9  
          inet addr:192.168.1.105  Bcast:192.168.1.255  Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:20972 errors:0 dropped:0 overruns:0 frame:0
          TX packets:3146 errors:1 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:6809459 (6.4 MiB)  TX bytes:621151 (606.5 KiB)
          Interrupt:3 Base address:0x100

eth1      Link encap:Ethernet  HWaddr 00:00:86:45:A4:93  
          BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:4 errors:0 dropped:0 overruns:0 carrier:4
          collisions:0 txqueuelen:1000
          RX bytes:0 (0.0 b)  TX bytes:1368 (1.3 KiB)
          Interrupt:11 Base address:0x1800

lo        Link encap:Local Loopback  
          inet addr:127.0.0.1  Mask:255.0.0.0
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:16 errors:0 dropped:0 overruns:0 frame:0
          TX packets:16 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:828 (828.0 b)  TX bytes:828 (828.0 b)


0000:00:00.0 Host bridge: Intel Corp. 440BX/ZX/DX - 82443BX/ZX/DX Host bridge (rev 03)
      Flags: bus master, medium devsel, latency 64
      Memory at f8000000 (32-bit, prefetchable) [size=64M]
      Capabilities: [a0] AGP version 1.0

0000:00:01.0 PCI bridge: Intel Corp. 440BX/ZX/DX - 82443BX/ZX/DX AGP bridge (rev 03) (prog-if 00 [Normal decode])
      Flags: bus master, 66MHz, medium devsel, latency 128
      Bus: primary=00, secondary=01, subordinate=01, sec-latency=64
      Memory behind bridge: f0000000-f7ffffff

0000:00:02.0 CardBus bridge: Texas Instruments PCI1450 (rev 03)
      Subsystem: IBM: Unknown device 0130
      Flags: bus master, medium devsel, latency 168, IRQ 11
      Memory at 50000000 (32-bit, non-prefetchable) [size=4K]
      Bus: primary=00, secondary=02, subordinate=04, sec-latency=176
      Memory window 0: 18000000-183ff000 (prefetchable)
      Memory window 1: 18400000-187ff000
      I/O window 0: 00004000-000040ff
      I/O window 1: 00004400-000044ff
      16-bit legacy interface ports at 0001

0000:00:02.1 CardBus bridge: Texas Instruments PCI1450 (rev 03)
      Subsystem: IBM: Unknown device 0130
      Flags: bus master, medium devsel, latency 168, IRQ 11
      Memory at 50100000 (32-bit, non-prefetchable) [size=4K]
      Bus: primary=00, secondary=05, subordinate=07, sec-latency=176
      Memory window 0: 18800000-18bff000 (prefetchable)
      Memory window 1: 18c00000-18fff000
      I/O window 0: 00004800-000048ff
      I/O window 1: 00004c00-00004cff
      16-bit legacy interface ports at 0001

0000:00:03.0 Ethernet controller: 3Com Corporation 3c556B CardBus [Tornado] (rev 20)
      Subsystem: 3Com Corporation: Unknown device 6356
      Flags: bus master, medium devsel, latency 80, IRQ 11
      I/O ports at 1800 [size=256]
      Memory at e8101400 (32-bit, non-prefetchable) [size=128]
      Memory at e8101000 (32-bit, non-prefetchable) [size=128]
      Expansion ROM at <unassigned> [disabled] [size=128K]
      Capabilities: [50] Power Management version 2

0000:00:03.1 Communication controller: 3Com Corporation Mini PCI 56k Winmodem (rev 20)
      Subsystem: 3Com Corporation: Unknown device 6159
      Flags: medium devsel, IRQ 11
      I/O ports at 2000 [size=256]
      Memory at e8101c00 (32-bit, non-prefetchable) [size=256]
      Memory at e8101800 (32-bit, non-prefetchable) [size=128]
      Capabilities: [50] Power Management version 2

0000:00:05.0 Multimedia audio controller: Cirrus Logic CS 4614/22/24 [CrystalClear SoundFusion Audio Accelerator] (rev 01)
      Subsystem: IBM: Unknown device 0153
      Flags: bus master, slow devsel, latency 64, IRQ 11
      Memory at e8100000 (32-bit, non-prefetchable) [size=4K]
      Memory at e8000000 (32-bit, non-prefetchable) [size=1M]
      Capabilities: [40] Power Management version 2

0000:00:07.0 Bridge: Intel Corp. 82371AB/EB/MB PIIX4 ISA (rev 02)
      Flags: bus master, medium devsel, latency 0

0000:00:07.1 IDE interface: Intel Corp. 82371AB/EB/MB PIIX4 IDE (rev 01) (prog-if 80 [Master])
      Flags: bus master, medium devsel, latency 64
      I/O ports at 1c00 [size=16]

0000:00:07.2 USB Controller: Intel Corp. 82371AB/EB/MB PIIX4 USB (rev 01) (prog-if 00 [UHCI])
      Flags: bus master, medium devsel, latency 64, IRQ 11
      I/O ports at 1c20 [size=32]

0000:00:07.3 Bridge: Intel Corp. 82371AB/EB/MB PIIX4 ACPI (rev 03)
 Flags: medium devsel, IRQ 9

0000:01:00.0 VGA compatible controller: S3 Inc. 86C270-294 Savage/IX-MV (rev 11) (prog-if 00 [VGA])
 Subsystem: IBM ThinkPad T20
 Flags: bus master, 66MHz, medium devsel, latency 64, IRQ 11
 Memory at f0000000 (32-bit, non-prefetchable) [size=128M]
 Expansion ROM at <unassigned> [disabled] [size=64K]
 Capabilities: [dc] Power Management version 1
 Capabilities: [80] AGP version 1.0


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wesly_chenCommented:
Sorry, I never used wavelan so I can't tell you what did it change.

You said you use SMC 2632W 802.11b wireless card. However, lspci shows you have 3Com 3c556B CardBus [Tornado]
and 3Com PCI 56k Winmodem (both share IRQ 11). I don't see SMC card.....

Your /etc/network/interfaces should have a line
iface eth0 inet dhcp

Then you can use
ifdown eth0
ifup eth0
to bring down / up the eth0 to force it pick up the new AP.

Wesly
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DavehudsnAuthor Commented:

FOR MODERATOR -- I NO LONGER SEE AN OPTION TO CLOSE OUT / CANCEL THIS QUESTION......  PLEASE  CLOSE THIS QUESTION AS UNANSWERED.
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DavehudsnAuthor Commented:
Wesly,

Your answer didn't give me exactly what I needed, but it helped me with some details I didn't know under Linux.
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