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Old 04-27-2006, 10:18 PM   #1
teufelhund
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Registered: Aug 2005
Location: Midwestern USA
Distribution: Slackware 10.2
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wlan0 stopped working


I'm sure this is a repeat thread, but I've searched LQ and Googled to no avail. Anyway...

I had my WUSB11 wireless adapter working perfectly under ndiswrapper 1.13. After shutting down my computer for a day and booting up again, my wireless card suddenly stopped working. I can't get dhcpcd to get an address. In fact, the only affect it has is to take down wlan0 after I have brought it up with the command
Code:
ifconfig wlan0 up
Here are some things that confuse me:
  • This interface worked fine for months on an identical installation (this was only interrupted due to a hard drive crash)
  • Since getting a new hard drive, the adapter has worked well for one to two weeks
  • This is a dual-boot computer with Windows 2000, under which the wireless adapter still works
  • Since the problem started in Linux (Slack 10.2, btw), I have had a puzzling issue in Windows as well. Initially Windows will not recognize my wireless adapter as such...simply as a generic USB device. I have to disconnect it and reconnect it, after which things will work normally.

In the spirit of keeping this post as short as possible, I have posted several logs and configuration files at the following address:
http://www.geocities.com/teufelhund_mv/wlan0.html

Thanks in advance to anyone who is willing to offer some help. (I want to love Linux, not feel white-hot rage...)

Matt
Linux since 2000!
 
Old 04-28-2006, 01:59 AM   #2
basileus
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You are talking about dhcpd... do you really mean dhcpd (=dhcp server) or dhcp client? If you are trying to start dhcpd then you get this kind of weird behavior.

I'd try some of these things:

- Unplug and plug the device in Linux (like you have already done in Windows)
- Reboot your wlan router (most get filled up with something and stop working)
- Verify that _all_ your settings really are as they were before the HD crash
- Verify if you have problems with any other usb devices (usb port problem?)
- Check that the device works 100% ok in Windows, so that hardware problem can be ruled out
- Check if you had updated any packages in Slackware the day before the device stopped working
 
Old 04-28-2006, 06:48 AM   #3
teufelhund
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Quote:
Originally Posted by basileus
You are talking about dhcpd... do you really mean dhcpd (=dhcp server) or dhcp client? If you are trying to start dhcpd then you get this kind of weird behavior.
Sorry...my typo. I meant dhcpcd.

Quote:
Originally Posted by basileus
I'd try some of these things:

- Unplug and plug the device in Linux (like you have already done in Windows)
Already taken care of. (The results are somewhere in /var/log/messages.) It did little to nothing. I don't remember offhand, but I don't think it even registered as a wifi adapter when plugged back in (although it had been recognized as such earlier).

Quote:
Originally Posted by basileus
- Reboot your wlan router (most get filled up with something and stop working)
- Verify that _all_ your settings really are as they were before the HD crash
- Verify if you have problems with any other usb devices (usb port problem?)
- Check that the device works 100% ok in Windows, so that hardware problem can be ruled out
- Check if you had updated any packages in Slackware the day before the device stopped working
I'll check on all of these, thank you. Other than the issue I mentioned, it does work in Windows. (I'll uninstall/reinstall the software and reinstall the driver.) All settings for wireless are the same. Are there other system settings that might affect this? I'll have to check on when the last system update was...after wlan0 was working, but I don't know how long before it stopped.

Thanks again...you've given me some homework to do!

Matt
Redefining since Spring of 2001!
 
Old 05-02-2006, 06:59 PM   #4
johndoe0028
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Have you recently compiled a new kernel?
 
Old 05-02-2006, 08:05 PM   #5
teufelhund
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No kernel recompiles since my re-installation.

I still have yet to follow basileus's advice. It's not because I don't want to, it's because I'm in the last days before college final exams. I'll post my results when I have them.
 
Old 05-03-2006, 09:11 AM   #6
teufelhund
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Registered: Aug 2005
Location: Midwestern USA
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Quick update:

There is definitely a USB port problem on my second USB port. (This is not the one that I am using for my wlan device.) Windows recognized my Sandisk USB drive, but refused to access it (and took about 10 minutes to stop the device so I could remove it). I am currently using the same USB drive on a computer at school, so I know the drive works...must be the port.

I'm hoping my other port isn't getting flaky on me as well. Like I said, it works in Windows (except for having to remove it then plug it in after booting). Maybe that minor issue is indicative of an impending port failure.

Poop.

Matt
 
  


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