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Old 10-02-2010, 10:56 PM   #1
sysrez
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Wireless N USB dongle Edimaxx EW-7811Un


I bought this Wireless N USB dongle today and it works fine in Windows.

But when I plug it into my Ubuntu Netbook, nothing happens? I'm guessing this is a driver issue and there is a driver available on their website but I have no idea what to do with it as I have never manually installed a Linux driver before. I tried looking up some tutorials but all the methods seem completely different between specific hardware.

The driver is available here : http://www.edimax.com/en/support_det...id=1&pl2_id=44
 
Old 10-02-2010, 11:04 PM   #2
Timothy Miller
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That download is the source code for the driver. You'd have to compile it yourself. If they have readily available open source drivers, it's a VERY good chance that support for it is already in the more recent kernels. Have you opened your network manager to see if it sees the adapter, or checked ifconfig to see if it is seeing another network interface?

What version of Ubuntu?
 
Old 10-02-2010, 11:10 PM   #3
sysrez
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Ubuntu 10.4.1

ifconfig only lists eth0, lo and wlan0 which is my internal wlan card. My network manager do you mean "Network tools"? There is a devices section in there but again it only mentions those three devices.

I have also Disabled the wireless card via the physical switch on my netbook but still does nothing.

According to this article though I need to compile the driver.

Quote:
USB N Dongle: I also own one single Edimax 802.11N dongle. Now with Ubuntu 9.10, I needed to compile the driver. This meant editing one file, turning two nos into two yeses and then typing make and make install. Not difficult, rather, just not familiar to most folks. To be safe, I did the same thing with Ubuntu 10.04. Turned out, however, that I needed to edit the blacklist file with three words and hit save and reboot to get it working. Again, easy, but not info that Ubuntu provided to me. The speeds for the dongle were fantastic; I could not be happier.
That is reassuring but unfortunately I don't know how to compile drivers, so if somebody could point me into the right direction please?

Last edited by sysrez; 10-03-2010 at 12:56 AM.
 
Old 10-03-2010, 01:06 AM   #4
rob.rice
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unpack the .tar.gz .tgz .tbz what ever (do a "man tar" from the command line to find out how)
then read the README file to find out how to install it
most of the time it's just a "make" then as root "make install" not very likely but you may need to do a ./configure to start with

Last edited by rob.rice; 10-03-2010 at 01:09 AM.
 
Old 10-03-2010, 01:12 AM   #5
sysrez
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I'll take another look in the Readme I may have missed something.

EDIT:Oh my god that was so easy -_-. The read me file didn't help, instead there was a PPT amongst the documentation with step by step instructions.

Thanks for the help guys, I will look into the folders more carefully and read documentation next time.

Just discovered another problem. Now if I'm correct, 150mbit/sec = 18mbyte/sec?

I'm only getting half of that? I'm juggling between it either being a Network problem or some kind of USB limitation but the network setup seems fine, max TX rate is 300mbit/sec and all LAN connections are gigabit. I took into account the fact that the file I'm uploading from the Ubuntu netbook is on an NTFS partition, though that doesn't seem like the limitation because I just downloaded a file from my desktop to my NTFS partition and onto my EXT3 partitions with the same speed.

Last edited by sysrez; 10-03-2010 at 02:09 AM.
 
Old 10-03-2010, 09:07 AM   #6
Timothy Miller
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Also depends on your router, distance, and how many antennas it uses. Such as the Intel 5100 Wireless-N is a 2x1 card. Advertised as 300 Mbps capable. But unless you're setting within 5 feet of a wireless point, you'll never get ANYWHERE near that. You'll get speeds very similar to what you see, 120-180 Mbps. It's very likely this is a 2x1 implementation similar to that.
 
Old 10-03-2010, 09:58 AM   #7
sysrez
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Router is about half a metre away. It is a TP link TL-WR1043ND Wireless N Gigabit router with three antennas.

The wireless N dongle is advertised as 150mbps and I'm only getting about 80mbps tops.

Last edited by sysrez; 10-03-2010 at 10:00 AM.
 
Old 10-03-2010, 11:21 AM   #8
Timothy Miller
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The router only uses 2 antennas though. No current Wireless-N router actually uses all 3 actively. They generally use 2 with the 3rd for increased reliability, but don't actively transmit or recieve on it.

If it's advertised as 150 Mbps, then max you'd ever actually see would be about 130 Mbps (software overhead). No idea if you're that close to the router why you'd get such a lower speed.
 
Old 10-04-2010, 12:59 PM   #9
sysrez
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Would anyone else have any idea why I'm getting such a low speed? :S
 
Old 10-29-2010, 01:29 AM   #10
bystanding
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Well, it just because EW-7811Un only support to 150mbit/s, please check the product page.

So you have already got the max speed of it.
 
Old 10-30-2010, 05:50 AM   #11
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Like you, had trouble with wireless connections, but found
a nice solution with the 'GetNet' USB adapter.
See my post on it.......


http://www.linuxquestions.org/questi...dapter-841356/


Hope this helps
 
Old 08-21-2011, 05:37 AM   #12
cloud5trike
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Quote:
Originally Posted by sysrez View Post
I'll take another look in the Readme I may have missed something.

EDIT:Oh my god that was so easy -_-. The read me file didn't help, instead there was a PPT amongst the documentation with step by step instructions.

Thanks for the help guys, I will look into the folders more carefully and read documentation next time.

Just discovered another problem. Now if I'm correct, 150mbit/sec = 18mbyte/sec?

I'm only getting half of that? I'm juggling between it either being a Network problem or some kind of USB limitation but the network setup seems fine, max TX rate is 300mbit/sec and all LAN connections are gigabit. I took into account the fact that the file I'm uploading from the Ubuntu netbook is on an NTFS partition, though that doesn't seem like the limitation because I just downloaded a file from my desktop to my NTFS partition and onto my EXT3 partitions with the same speed.
I have the same one too. I have the driver source code and manual (ppt file) but I can't still install it
Could you step by step manual
After type 'make' as root then ./clean but it inform permission denied... that's all
 
  


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