LinuxQuestions.org
Visit the LQ Articles and Editorials section
Go Back   LinuxQuestions.org > Forums > Linux Forums > Linux - Networking
User Name
Password
Linux - Networking This forum is for any issue related to networks or networking.
Routing, network cards, OSI, etc. Anything is fair game.

Notices



Reply
 
Search this Thread
Old 06-17-2013, 07:11 PM   #1
garrettderner
LQ Newbie
 
Registered: Jul 2008
Location: Chicago IL, USA
Distribution: antiX debian
Posts: 14

Rep: Reputation: 0
Trouble configuring a Realtek USB wifi stick. Won't go UP, then treated as ethernet.


I have a new USB dongle wireless adapter, Realtek 8178 (uses 8192CU driver). Frustratingly enough, I had it working, then I changed something. All I did was change its NAME="wlan1" to NAME="wlan0" (and comment out the line for the old wlan0 device) in /etc/udev/rules.d/70-persistent-net.rules. Then (after restarting) I tried to configure it using ceni (which worked before, when it was wlan1). When I tried now, it said something like,

ifconfig unable to set wlan0 UP.

Then I tried, in ceni, removing the configuration, to start over. After that, it seems to think the wifi adapter is an ethernet adapter. Typically ceni shows a list of hardware like:
Hardware interfaces
eth0 ethernet [address] [device name]
wlan0 wireless [address] [device name]

But now it shows wlan0 and the Realtek device, OK, only with "ethernet" instead of "wireless." When I select it and try to configure, it does not scan for wifi networks, it tries to connect a wired network.

My system is Debian Squeeze / antiX, with a liquorix 2.6.35 kernel. I compiled & installed the drivers from a CD that came with the adapter. (Maybe I could have gotten firmware-realtek working, but I didn't try that.) Everything was working until I changed one little name key, which normally you are allowed to change.
 
Old 06-18-2013, 10:45 AM   #2
garrettderner
LQ Newbie
 
Registered: Jul 2008
Location: Chicago IL, USA
Distribution: antiX debian
Posts: 14

Original Poster
Rep: Reputation: 0
Will try fresh install

Regarding the Debian firmware-realtek package: I tried with a recent live CD (Antix 13 full), and it looks like there are severe connection stability issues, using that package with the usb wifi dongle I have. Ceni shows my network at first, but it disappears after I attempt to connect.

I have been looking at the Linux Wireless LAN Support page http://linux-wless.passys.nl/query_hostif.php, searching on rtl81 and reading the comments and links. It seems to confirm there are issues.

Probably the driver from Realtek is my best bet. I have another partition where I can try a fresh Linux install. So I'll try that, using a wired connection to start out with.

One thing I forgot to say yesterday, I did make another change, which could have been what broke it: I uninstalled wicd (and wireless-tools with it), at the same time I changed that name key (to wlan0). I did that because I though ceni would be enough, and would keep things more simple. SO, I will also experiment with putting wicd back.

Last edited by garrettderner; 06-18-2013 at 10:50 AM. Reason: additional thought
 
Old 06-19-2013, 05:36 PM   #3
garrettderner
LQ Newbie
 
Registered: Jul 2008
Location: Chicago IL, USA
Distribution: antiX debian
Posts: 14

Original Poster
Rep: Reputation: 0
Reinstalling wicd fixed things

After I put back wicd (& wireless-tools with it), the Realtek wireless device showed up properly as "wireless" again, in ceni. I was able to configure it.

For some reason it took two reboots, before it would work properly. After the first reboot, ceni showed the adapter as "wlan1", and wicd crashed. After the second reboot, the device shows up as "wlan0" the way I expected. There must have still been some memory of "wlan1" somewhere unknown to me.

It has been working for half an hour. So far so good! I'll see whether it stays stable for longer periods; if so I will mark this Solved.

As I had hoped, the system still suspends and resumes OK, and reconnects to the network when it resumes.

That's using the driver supplied by Realtek.

As for the package, firmware-realtek, I had no luck. I tried it (version 0.36+wheezy) from a fresh install with Mepis 2.6.36 and with Liquorix 2.6.32 kernels, and also from a live CD (antiX Luddite) with a Mepis 3.8 kernel.

Last edited by garrettderner; 06-19-2013 at 06:53 PM. Reason: add version number
 
Old 06-19-2013, 10:24 PM   #4
garrettderner
LQ Newbie
 
Registered: Jul 2008
Location: Chicago IL, USA
Distribution: antiX debian
Posts: 14

Original Poster
Rep: Reputation: 0
Seems solved (& pretty reasonable for a $7 ebay purchase)

OK, I am feeling satisfied that this Realtek rtl8178 (better known as RTL8192) b/n/g usb wireless adapter works OK, as long as I use the factory driver, along with Wicd (or wireless-tools, at least). Good enough, for something for $7 on ebay. I imagine probably someday the Debian driver will work, too.

I looked at the documentation that come with the adapter, and it does say that the driver uses wireless-tools. So all the trouble was because I removed that.

Last edited by garrettderner; 06-20-2013 at 12:11 PM. Reason: add note about docs & wireless-tools and product id.
 
  


Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
No wifi or ethernet - Back Box 2.5 dist, w/ Atheros & Realtek network cards WyattEarp1 Linux - Newbie 34 10-06-2012 12:04 PM
Sitecom wl-345 usb wifi stick won't work backtrack mravatar3 Linux - Wireless Networking 2 02-13-2011 09:37 AM
2 Realtek Ethernet controllers won't work go_joe Linux - Hardware 1 05-04-2008 10:01 AM
Recommended Wifi USB stick. davemar Linux - Hardware 6 01-12-2008 12:34 AM
Ethernet settings won't STICK! Cinematography Mandriva 1 05-04-2005 04:34 AM


All times are GMT -5. The time now is 06:09 AM.

Main Menu
Advertisement
My LQ
Write for LQ
LinuxQuestions.org is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
Syndicate
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
identi.ca: @linuxquestions
Facebook: linuxquestions Google+: linuxquestions
Open Source Consulting | Domain Registration