Ubuntu Networking :: Managing / Changing Multiple Wireless Adapters?

Jan 2, 2011

I'm in a spot where my wireless access is about 200 ft from my computer so I bought a tl-wn721 adapter. I have already gotten the drivers for it but somehow I am still stuck with my wireless adapter built in to my sony vaio sz220 (yeah I know it's old...that's why I run ubuntu). So how do I change wireless adapters? The system does say that the realtek drivers associated with the 721 adapter are in use and enabled but in Win 7 I have much higher signal than what is currently displayed. Usually it's somewhere in the high 80 or 90s. Now it's hard to even get 70 and that's how I know that I'm on my built in adapter. I ran lspci -nn and this was my output. I might just not be searching for the right thing. BTW I'm running 10.04 LTS.

00:00.0 Host bridge [0600]: Intel Corporation Mobile 945GM/PM/GMS, 943/940GML and 945GT Express Memory Controller Hub [8086:27a0] (rev 03)
00:01.0 PCI bridge [0604]: Intel Corporation Mobile 945GM/PM/GMS, 943/940GML and 945GT Express PCI Express Root Port [8086:27a1] (rev 03)


Like some others I have found people are having problems with network manager from time to time. It seems that wicd is the solution. Will this work with ubuntu 10.04?

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Networking :: Routing Torrents With Multiple Connections / Adapters

Jul 8, 2010

Running Fedora 13 and have it working great acting as my firewall/router/samba server etc. The problem is the connection is shared by a fair number of us and the ISP is getting annoyed with the amount of torrent traffic. One of us has access to a wireless network and we'd like to figure out how to route some of the traffic through that without having to disconnect from the current network. I put a wireless card in the fedora box and can connect to the wireless but then it messes up the current network and pretty much nothing works.

At the least if I could run a torrent client (e.g. ktorrent or whatever) on the Linux box and have it download through the wireless card on tcp port XXXXX I would be happy. The torrent client and those tcp/udp ports can be dedicated to that wireless card, the rest of the network doesn't need to get involved if that makes things simpler. Not looking for a step by step tutorial, just an explanation of what needs to be done and a shove in the right direction. My experience is limited to single WAN connections up to this point.

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Ubuntu Networking :: What Wireless USB Adapters Everyone Is Using

Nov 24, 2010

I am in the market for a decent USB Wireless Adapter for Ubuntu 10.10 I just wondered what USB adapters everyone is using? Just hoping to get an idea of the better ones that people use.

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Ubuntu Networking :: Cant Get Wireless Working - Have 2 Adapters ?

Mar 24, 2010

I have a Netgear WG111T USB and a Edimax EW-7711UAn USB.

I have the latest version of ubuntu.

I have installed ndiswrapper, and loaded the windows drivers in for the netgear, and it will show up in iwconfig but wont connect to anything, I got rid of network manager and installed wicd as I heard that may solve the problem, to no avail.

The Edimax one, I got because I read it worked straight out of the box, but looking into it apparently i need to compile the firmware from ralinks website, but I get errors with that.

Im not too fussed what one I use as long as I get a wireless connection, currently i have it connected to my laptop through a cable and bridging the connections.

If I type in iwconfig with the edimax:


iwconfig with the netgear:


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Ubuntu Networking :: 1 Switch For 2 Wireless Network Adapters

Oct 13, 2010

I am using 2 wireless network adaptors,one intel 5300 AGN (driver iwlagn)and the other one smc ezconnect ( driver zd1211rw), a usb adaptor The intel 5300 AGN has a hardware switch.

However, everytime i turn off the hardware switch of intel 5300 AGN, the smc ezconnect adaptor is turned off too. How to I prevent this(how to make 2 switch for 2 adaptors?)

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Fedora Networking :: What Wireless Adapters Work Out Of The Box For Fc11

Oct 27, 2009

I know theres a thread for this for fc9 but thats probably kind of outdated now. So I am trying to set up a wireless connection for a pc in my bedroom and just want something that will work out of the box.

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General :: Ubuntu: Failure To Login With Multiple Video Adapters?

May 10, 2010

I have a computer with three video cards and six monitors. Works great on Windows. Trying to get it to run Ubuntu 10.4 as well. It loads fine when I have it configured to run on one adapter; detects both screens, runs ok. But I want to turn the other 4 monitors on and run the whole thing as one extended desktop (one session, etc). So I downloaded and installed the newest ATI driver for Linux, which seems to work, kinda. I ran this to set up the screens:

aticonfig --adapter=all --initial -f Now when I boot, Ubuntu seems to turn on all the screens (3 viewports, each with two cloned displays from what I can tell). When I enter my login info OR move the mouse off the main screen, the screens freeze and the kbd/ms become unresponsive.


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Ubuntu :: List Of Wireless Routers And Usb Adapters Floating Around Here?

Oct 18, 2010

Is there a list of wireless routers and wireless usb adapters floating around here? I want to find a router and usb adapters that are ready to go right out of the box to set up wireless at my house.

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CentOS 5 Hardware :: Can Find What Wireless Adapters Are Supported?

Jan 2, 2011

My recent CENT OS install went very well. However the only thing missing is wireless support for my modest FR-300USB Wireless adapter. Since I do not have the expertise to create a driver I need to know where I can find what wireless adapters are supported.

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Ubuntu Networking :: Difference Between PCMCIA And USB Adapters?

Jan 9, 2010

I am planning to buy a wireless device that supports both monitor mode and packet injection options for my project work..I came across this site while browsing


Is there any advantage of using USB Wifi Adapters over PCMCIA cards??your suggestion/experience in choosing a device in that link or recommend any other device?

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Ubuntu Networking :: Losing (dropping) Wireless Connection After Changing MAC Addr?

Aug 8, 2011

Sorry if this has already been solved;answered anywhere else - I tried looking it up but to no avail. The problem persists & the hints I found around the forum did not provide a solution to the case, neither other net solutions i looked up I run Winblows at the lab and sometimes take my Ubuntu PC with me. There is an open Wireless network where they set MAC permission, and there's no pwd to access. It so should be fairly easy to change m MAC and access it, right! No. I run ifconfig and macchange, successfully change my MAC addr BUT the connection drops! Then if I change it back (MAC to my original address) it goes back online. And yes, I shut down the service -- "ifconfig wlan0 down" and then up..WHAT ON EARTH am I doing wrong??? No webpages touch this 'trouble-frigging-shooting instance!

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Ubuntu Networking :: Error Message - No Bluetooth Adapters Present

Jul 14, 2010

Using Ubuntu on a new toshiba satellite laptop, have setup almost everything but the bluetooth. When I try to initiate the bluetooth, I get an error message "No bluetooth adapters present" "Your computer does not have any bluetooth adapters plugged in"

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Fedora Networking :: Connect Pc To Other Over My Network Adapters?

Sep 15, 2009

I'm trying to connect my fedora 11 computer to a kubuntu9 computer over a cross wired network cable so i can share files, Internet and printers i dont want to use a router or wifi
what rpm's do i need to install can someone guide me through it

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Ubuntu Networking :: 9.10 - Multiple Wireless Connection - Disconnected

Feb 16, 2010

Since I have started to use Ubuntu 9.10, I have had multiple wireless connection troubles. First of all, it says the signal is 2 bars, when in fact my router is right next to me as of right now. Second of all, when I try to connect to it, it asks for my password 3 times, then says disconnected. I'm on a hardwire right now, it's across my keyboard, and I'm in a tangled mess.

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Networking :: Multiple IPs To Wireless Router?

May 27, 2011

Current: Workstation --> Wireless Router --> Cablemodem --> InternetsIPs: -->> -->>{someIP} --> InternetsSo my first link has a Class C of I want to add a different class C also to that firstink of The reason is my LAN traffic will be on and traffic will be on wireless router can be only set up for one LAN IP, which is Is there some way to set up a vpn or nat or bridge or something else so I can run two class C's to the router and it will pass them along? Router is the Netgear WNDR3700.

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Debian Configuration :: Wireless Networking For Multiple Users?

Dec 4, 2010

I have 2 users on my HPmini 210 netbook running Squeeze. I just found out that it does not connect to existing wireless networks when I login as the second user. Is it supposed to happen by default or am I supposed to do something to make that happen? Another problem is that when I tried to create "new connections" again for the second user, the keys won't work. The same keys are working for the first user. The network keys are WEP 64 bit HEX.

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Networking :: Multiple Network Connections - Internal And Wireless

Dec 4, 2008

What I want is quite simple, I have my PC running Linux Mint 5 (Elyssa), and I would like to connect it to both an internal network, which has a file/print server, another machine and will soon host a small cluster. I also have a wireless router connected to the tinterweb.

The thing is using my ethernet I want to connect to the internal network whilst simultaneously using my wireless to deal with the internet, I want to keep the internal network off the net as it really doesn't need to be connected. I can connect to my internal quite happily and also my wireless but not both at once.

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CentOS 5 Networking :: Add Extra Loopback Adapters Like Windows - For GNS3 Router Emulation

Mar 26, 2009

I have been searching the forums for quite a while, to add extra Loopback adapter in Centos 5.1, but no success! Could you please suggest me the steps? in Windows, it is quite easy to add as many adapters as you want. wondering, if this is even possible in Linux? I have to run GNS3/Dynamips for router emulation and bind those Loopback adapters to virtual routers!

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Ubuntu Networking :: Staying Connected To Wireless Network With Multiple Access Points

Oct 15, 2010

I can connect to my school's wireless network using the standard network manager, but often (not always) it repeatedly disconnects and reconnects every few minutes. Occasionally it also prompts me for the security information again (even after it previously connected successfully).

By running iwconfig when it's on the fritz, I can see that it's often switching access points for the network - which is what I think is causing the problem. It disconnects and reconnects even when the signal strength for the current AP is fine, and it will often switch to an AP with a weaker signal strength.

$sudo lshw -C network
description: Wireless interface
product: Realtek Semiconductor Co., Ltd.
vendor: Realtek Semiconductor Co., Ltd.
physical id: 0
bus info: pci@0000:05:00.0
logical name: wlan0

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Fedora Networking :: Fc12 Networkmanager And Multiple Wireless Cards?

Nov 9, 2010

I'm having problems getting two wlan cards to work under Networkmanager with F12. I have an old server that I wanted to move, so thought I'd get a USB wlan device for it. before setting up the server, I thought I'd try the USB (an Edimax EW-7711USn - Ralink 2870) on my laptop first. My laptop has an inbuilt ipw2200 card that works fine under NM.

So I've down loaded the DPO_RT3370_LinuxSTA_V2.4.0.1_20100831.tgz file from Ralink, and built the driver (after changing the os/linux/config.mk file for the WPA supplicant settings). I also install the rt2870 firmware (from Ralink) in the /lib/firmware directory. I also blacklisted the rt2800usb driver to ensure that that didn't get loaded.

The problem I have is that I can now get both the ipw2200 device and the rt2870 devices 'working', but they both try to assume the same IP (I want fixed IP's and not DHCP for them) - what is the way to configure the 'devices' so that the rt2870 device is always given IP x and the ipw2200 given IP y?

I think my problem is really my lack of understanding where/how NM handles the files under the GUI config. I used to semi understand how the old network config tool set up it's files and where they were etc. But with NM I'm a bit lost as to how it equates the device with the network settings. Once I have the device working with the correct driver on my laptop, I'll look to apply the same settings on the server (which is then FC13 - but should be simpler as it doesn't have an existing wlan interface).

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Ubuntu Networking :: Wireless Stops Working With Multiple Intel 5100 (vaio) On Wifi

Nov 24, 2010

I'm using a Vaio TT, which seems to use an Intel 5100 WiFi chipset, and a Linksys WRT54G2 (firmwares 1.0.1 and 1.0.4), ubuntus 10.10 and 10.04.

Wifi works fine out of the box. However if the other vaio tt in our office (running windows 7) comes online, my laptop stops being able to make new connections. It WILL stay connected to chat servers, and downloads SOMETIMES continue to work. However all new HTTP requests / ssh connections / rdp connections / pings fail. The laptop still appears to be "connected" to the wifi network.

This may also happen after an undetermined amount of time without the extra vaio. It is not solved by reconnecting or rebooting. Once the extra vaio leaves the building, everything works fine again. This problem does not happen at all if I boot into windows.

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CentOS 5 Networking :: Centos 5.2 / Hyper-V/ Bridge With Synthetic Adapters Does Not Work?

Jan 27, 2009

I have a Centos 5.2 VM running under Windows 2008 Hyper-V. If I add two "legacy Nic's" and bridge them, everything appears to work fine. However, if I remove the legacy nics and replace them with two synthetic nics (linux integration components), the nics seems to function fine UNTIL I add them to a bridge.This VM will eventually be used as a DansGuardian/Squid transparent proxy for a local library. The logical layout is represented by the attached jpg image. I have also included the ifcfg- scripts for the adapters and bridge for both scenarios.It would also be useful if someone else has Hyper-V with the integration components and dual physical nics to see if they can reproduce my symptoms on their box.Legacy Adapters:



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General :: Create A Multiple Files By Reading A Input File And Changing The Contents?

Sep 16, 2009

Being new to this area .I have been assigned a task which i am unable to do . Can any one please help me .

I have requirement where i have input file XYZ_111_999_YYYYMMDD_1.TXT and with header and series of Numbers and Footer.

I want to create a mutiple output files with each file having a seperate code which is stored in text file and create XYZ_222_999_YYYYMMDD_1.TXT . and add date in the contents next to series of numbers .Like this

Before change the file looks like this

file name XYZ_111_999_YYYYMMDD_1.TXT



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Ubuntu :: Changing MAC On Wireless USB Card?

Nov 14, 2010

I just moved from win7 to ubuntu, besides some changes like the close and minimize on the left side of a programm, I must say I really love ubuntu!

Now, on windows7 I was able to change my mac address using SMAC, but I have no clue how on linux.

im using an Eminent Wireless USB Adapter

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Networking :: Ping Multiple Devices Via Multiple NICs?

May 20, 2010

I have an old pentium 3 computer that has ~7 NICs installed. These NICs are attached to modems and other networking equipment. According to the linux ping page on computerhope.com, it seems that one could send a ping from a certain specified NIC. How would one go about this?

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CentOS 5 Networking :: Multiple Nics With Multiple Gateway ?

Jun 16, 2009

I have a CentOS 5.3 box with three network interfaces in it. Each interface is attached to a separate VLAN and I want traffic to stay on each network segment.What I can�t figure out is why I cannot get each interface to have its own gateway and everything gets sent through the default gateway.The basically takes my possible 3Gb total bandwidth and throws it down a single 1Gb pipe.Then on top of that, if I take down the interface (ifdown) that has the current default gateway,I loose contact to the other two interfaces.When I look at the routes, each one of the interfaces shows the gw as and defers to the default route. So I delete the route and try to add a new route with:

[root@testsan ~]# ip route add via dev eth2

but end up with the error:

RTNETLINK answers: Network is unreachable

[root@testsan sysconfig]# cat network

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Ubuntu Multimedia :: What RCA To USB Adapters Work?

Jul 14, 2011

I have a camera with a BNC output that I need to connect to my computer via USB. Currently I have a BNC to RCA adapter on it, which I can leave on or take off. What RCA to USB adapters work on Linux? I have searched extensively and cannot find any that list Linux compatibility. I am open to other suggestions on how to connect the BNC output to USB other than RCA to USB.

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OpenSUSE Wireless :: Changing IP Addresses?

Jan 21, 2010

Code:PING ( 56(84) bytes of dataFrom icmp_seq=2 Destination Host Unreachabel The IP address we seem to be pinging from is the IP for our wired ethernet connection, and since we're attempting to connect to a wireless network, we think our inability to connect may be due to this issue.Already installed the appropriate firmware updates, because at first it couldn't find any networks at all and now it knows the whole neighborhood, so as far as we know, we took care of that issue by updating firmware.We run the connection stuff in YaST and it all seems to work but it just won't connect to the wireless network.

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Ubuntu :: Dual Ethernet Adapters On 10.04 Server?

May 4, 2010

10.04 locks up when 2 adapters are listed in interfaces example eth0 ip= eth1 ip=

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Ubuntu / Apple :: 10.04 On IMac I7 - No Bluetooth Adapters Present

May 3, 2010

Did someone manage to make the Bluetooth adapter detected by Ubuntu 10.04 on an iMac 27" i7 or similar?

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