Ubuntu :: Two Wifi Simultaneous Networks?

Jun 21, 2011

following a new motherboard install I've just done a clean install of 10.10. At first, I was using the default network manager wifi to connect to my router - I had the upturned radar beam type icon in the top panel showing me the strength of the signal and access, by right clicking on it, to things like Enable Networking, Enable Wireless, etc. I read that installing WICD via synaptic would install wicd and remove the default network manager, so this what I did. My wifi is OK but I still have my upturned radar type icon and a new WICD icon in the top panel. I was expecting the upturned radar icon to disappear - is this correct? If I right click on the radar icon I can click on the Edit Connections option and change things - it appears I have both the default network manager and WICD working at the same time.

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General :: Cannot See Wifi Networks?

Feb 2, 2011

I am dualbooting Linux Mint and Windows 7 on my Toshiba laptop. windows, I can see wireless networks. However,nder Linux, when I click on network connections, my wifi network doesn't show up. What should I do.

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Ubuntu Networking :: Wifi Connects To Some Networks But Not Others?

May 7, 2010

I can normally connect to most wifi connections, but for some reason I can't connect to my broth's-gf-parent's network. Windows 7 can connect to it just fine, but not Ubuntu. Once in a while I'll go to a cafe, and this will happen there too.hough, like I said I can normally connect to all other wifi networks with no hassle

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Ubuntu Networking :: No Wifi Networks Showing Up?

Feb 27, 2011

got a dell inspirion 15r (i think), and it comes w/ win7 (I HATE Win7) so i made him let me dual-boot with ubuntu maverick meerkat. (he wouldn't let me get rid of win7 cuz thats what his parents use.) It installed successfully, so we booted into it, and there was no wifi networks. I thought it was because wifi was disabled so i press the button i think its F5 but still nothing. I thought it might have been the comp but i booted into win7 (Que the Beethoven's fifth)... and it worked in win7 (thats a first) can someone help me. Oh and i forgot i used that terminal command to unblock wifi

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Ubuntu Networking :: Cannot Get To Search For Wifi Networks

Aug 1, 2011

DELL Inspiron 1501 Broadcom BCM4311 is the wifi adapter.The problem I am having is that I cannot get to search for wifi networks. It looks like the driver and everything is there but the wifi is disabled for some reason.I installed the drivers provided by the "Additional Drivers" application and they do not work.I also followed this fix and I could see in the menu that the wifi was added but I was not able to click it or look for wifi's URL...

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Ubuntu Networking :: Long Wifi Networks Last In The Available List?

Mar 10, 2010

I was on a car trip earlier, but we were stuck in traffic. The stop-go stop-go kind of BS. I pulled out my 9.10 laptop and figured I'd scan for wifi networks and see how good America was at securing their networks. (I work in IT support so it's one of those things I preach to no end yet people rarely listen).

I was using wifi radar, and picked up a truckload of networks every time we'd stop. But something didn't sit well with me. When I click on the network manager icon in the top gnome panel to see what networks were available, it never seemed to refresh.

Example - the first 5 networks I saw were 1, 2, 3, 4, 5. We would stop-go more and more and miles later when I'd see more networks in the area show up in wifi radar, yet hit my network manager, I'd STILL see networks 1, 2, 3, 4, 5 and not 30, 31, 32, 33, etc like I expected.

What kind of refresh time or cache or whatever does network manager have? I just didn't understand why I was seeing the original networks from 15 minutes/miles ago and it never seemed to update.

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Ubuntu :: Force Scanning Of Wifi Networks After Suspend?

Dec 31, 2010

After I put my laptop in suspend mode and I resume it, it doesn't immediately detect the wifi networks. I have to wait for 5-10 minutes to see the various networks appearing.Is there a command I could run from the terminal to scan the wifi networks? I have tried the wcid application but I got some kind of conflict and then I removed i

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Ubuntu Networking :: Toshiba Satellite A215 Not Seeing Wifi Networks?

May 3, 2010

I'm using Ubuntu 10.04 - 64bit install with an A215. The wifi was working fine until today. Ubuntu seems to detect the hardware, and it shows the interface as being 'up', however no networks show up in either the network manager or 'sudo iwlist scan'. I'm not sure if it's a driver issue, or if the hardware itself died.Here is the output of lspci:

ubuntu@ubuntu:~$ lspci
00:00.0 Host bridge: ATI Technologies Inc RS690 Host Bridge
00:01.0 PCI bridge: ATI Technologies Inc RS690 PCI to PCI Bridge (Internal gfx)


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Ubuntu Networking :: Won't Connect To Open (unsecured) WiFi Networks?

Jul 9, 2010

I have no problem with my wireless network at home, or visiting friends, but it won't connect to public, open, unsecured WiFi networks, eg hotels, trains, ships.I'm using Ubuntu v9.10, NetworkManager applet v0.7.996, on a Dell Inspiron 1750 laptop.If I left click on the NetworkManager, the available wireless networks are displayed and I can see the relevent open networks, named as expected and shown without the lock icon. I click on the relevent entry, watch a spinner for 30 seconds or so and then it drops off and I have no connection. This happens for "all" open connections.If I look at my defined Wireless Network Connections now, I can see, eg, "Auto Internet@Sea, Last used: never". Editing that connection:

SSID: Internet@Sea
Mode: Infrastructure


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Fedora Networking :: WiFi Not Reliable And Can't Change Networks?

Jul 24, 2009

Fedora 10 (dual boot w/ XP) on Dell Optiplex with a Dell wirelessntennaI am on a university campus with campus-wide wifi network (so no router). I have a wireless HP printer that I want to be able to print to using an ad-hoc connection. The wireless antenna, networking, and wireless printing are all working in Windows XP (so hardware is OK). However, on the linux side, the wifi is really really finicky.

When I first boot up to fedora, it usually connects no problem to the campus-wide wifi network. If I try to switch to the ad-hoc printer network (which it sees), will not connect and, furthermore, it will no longer connect to the campus-wide network (and sometimes it doesn't "see" this network at all). It seems that restarting the Network Manager service sometimes helps to reconnect to the campus-wide network, but not always and I can't connect to the ad-hoc regardlessNOTE: I'm just barely a linux user, and I didn't set up my system - don't assume that I did anything that would be common sense and, if you can, walk me through your suggestions.

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Fedora Hardware :: BCM 4306 Can't See Any WiFi Networks / Resolve This?

Jan 13, 2010

I have FC 12 running and everything was working fine for about 2 weeks or so. Then today after I put my Daughter to bed, I booted up the laptop and it could not find any of the many WiFi networks that are present in my area, and when I tried to get it to connect to my home network through a saved configuration in the Network Connections Manager it kept asking for my WPA2 Password but it would not connect. So I got out my delopitated Cat-5 cable and tried to do an update and see if that would solve the problem. But alas it did not work (hence the posting of this tread ).

I even tried to unload the "B43" driver using code...

But that did not do the trick either. Is there any way to get it to work again without doing a re-install of the entire Operating System? I already had to do that, and it is a big pain in the A$$ because of a defective ATI Card in the laptop.

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Ubuntu Networking :: 10.10 - In Network Manager Can View Wifi Networks Fine But Cannot Connect

Apr 28, 2011

I have been an Ubuntu user for a year or so. My level is still ultra n00b but I am trying. Whenever I update Ubuntu there is always a WiFi problem, always. So now I am having problems getting wifi to work in 10.10. In Network Manager I can view wifi networks fine but I cannot connect. I tried with wicd also but I got as far as "getting ip" and then it would hang up.





I am not sure what driver I am using as I don't know how to exactly ID my driver. I know there is a way to ID the driver using airodump-ng but I have yet to find it.
I have a feeling this is a driver issue as one time I was able to establish a connection that then dropped a few minutes later. I have a feeling I should be disabling/removing the current driver and replacing it with ipw3945 or possibly a driver ndiswrapped? The problem is I cannot figure out how to remove the current driver.

I was going to switch back to 9.04 but I thought I would try to manually figure this one out instead of taking the easy way.

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Debian Configuration :: Can Connect To Internet By WiFi But Won't Show Networks

Aug 28, 2015

I just freshly installed Jessie on my Dell Inspiron 5110, I configured the network on the installer and had no problem. I can browse the web, get updates and install software.

But I can't find new networks. It just show "No Networks".

lspci -vnn
Code: Select all09:00.0 Network controller [0280]: Intel Corporation Centrino Wireless-N 1030 [Rainbow Peak] [8086:008a] (rev 34)
   Subsystem: Intel Corporation Centrino Wireless-N 1030 BGN [8086:5325]
   Flags: bus master, fast devsel, latency 0, IRQ 55
   Memory at f7e00000 (64-bit, non-prefetchable) [size=8K]

[Code] ....

What input should I post?

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Ubuntu Networking :: Installing Drivers - Wifi Card Is Unable To Search For Wireless Networks When Booted

Sep 10, 2010

I have installed Ubuntu for netbooks on my four year old laptop and of course the wifi card is unable to search for wireless networks when I'm booted into Ubuntu. I do have the driver software on a recovery disk. Would installing it in Ubuntu fix my problems?

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Fedora Networking :: Networks Connects To Home Wifi Network / But It Will Not Connect To Internet

Aug 6, 2010

I know Windows forward and backward but I am so new to linux it's just wrong. I just installed fedora (like 1hr ago) on and old toshiba laptop with a WiFi PC card. Everything seems to work fine except. My Networks connects to my home Wifi network but it will not connect to internet. When it connects the IP address isn't even close to being in the same range as my other laptops and PCs. Like I said I'm new to linux but I'm wanting to learn. Any fixes for this issue? Which linus book is the best one to read for a beginner? Other then not connecting to internet I have no complaints.

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Fedora Networking :: Orinoco Silver PCMCIA Wifi Card Doesn't Find Any Networks In F11

Sep 21, 2009

I have Lucent Technologies Orinoco Silver 11 Mbps PCMCIA wifi card. It worked perfectly in Fedora 10, but after updating to Fedora 11 it stopped finding any wireless networks. The updating were done with automatic updating utility. The card works perfectly in Windows, I tested it today.

My laptop is HP nx6110 if that matters.

Here is the situation:

When I plug-out the card, the Network Manager disables wireless networking as it should. When I plug-in the card, wireless networking is enabled, so the system seems to recognize the card in some way.

If I try to connect to "Hidden wireless network" (because there isn't any wireless networks listed in the Network Manager) system tries to connect for a couple of minutes, and then asks wireless settings again. Orinoco card's lights DOESN'T blink normally when connecting to the network (one light should blink rapidly and one should light continuously, but both are blinking rarely or doesn't blink at all).

In System->Administration->Network in tab Hardware (hope those names are correct, I use Finnish version of Fedora...) is:

It seems that the card is detected right.

Here is what I have done to get the problem solved: In System->Administration->Network I have tried to connect to the wireless network manually (disabling the Network Manager). I can't get the connection. It gives me random error messages, sometimes "Check the cable" or something like that, sometimes just timeouts IP determination.

I have tried to connect different wireless networks, no connection. All tested networks worked with another computer.

No matter if I reboot or service network restart or plug-out plug-in the card... the problem still appears.

Tried to find (and reinstall) drivers:


No Matches found


Here is the output of lspci. The output is the same if the wifi card is connected or not.


LAN connection is working just fine.

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Ubuntu Networking :: Can Not Connect To Wifi Networks - Can See Them But Not Connect - 11.04

May 3, 2011

I can not connect to wifi networks, i can see them but not connect.

My wifi device is:

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Ubuntu Networking :: Using Tether Or Ad-hoc Networks Causes Headaches With Other Networks?

Apr 16, 2011

I am trying to configure my android phone (rooted Eris running kaossfroyo 2.2) to be used as a midi controller. Which I am having enough trouble with as it is but it has raised an annoying issue that occurred a month ago when I used the phones tethering network with my laptop. After connecting the laptop to the phones network (either tether, or an Ad-hoc network created using the network manager) I am unable to switch to other networks. In other words when I'm done with the phone-laptop connection I cannot connect my laptop to my home network! When I click on the other network connection I can see that it is attempting to connect in the upper right corner of the desktop (the network icon) but it will not make the connection.

What happens is that the network indicator will make the little circle graphic as if it is trying to connect but it never will display the other circle as green indicating that it has connected. but when I disconnect from the home network that is not connecting I will get a message underneath that will say that ad-hoc network disconnected! If I am switching from the android tether it will say Android-Tether disconnected etc. Even though when I click on network manager it shows that I am attempting to connect to the home network (labeled LIBERTY in my case) upon disconnection it shows the ad-hoc or tether connection being disconnected.

I am absolutely baffled by this! The issue persists even after deleting the ad-hoc connection from the wireless settings tab!!! I would speculate that for some reason the laptop is attempting to connect to the previous ad-hoc connection despite me wanting it to connect to LIBERTY. I am very confused and hope someone can lead me in the right direction.

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Ubuntu :: Simultaneous Opening Of Firefox Windows ?

Aug 14, 2010

I am using the latest version of ubuntu(10.04 LTS) Desktop edition 32Bit. My problem is, after I open the firefox browser for first time after booting, a chain of new firefox windows start opening one after the another. In a matter of few minutes, there are like 15-20 instances of the browser opened.

I reinstalled the OS, but it is happening again and again. Is there some flaw in OS, something related to OS not compatible with my computer or some problem with the keyboard where some key(combination) is in a "press" mode (however, I dont see that happening on Laptop, the keyboard looks fine, plus Windows XP is working just fine).

This problem is forcing me to spend a larger time on Windows (which is bit cringy, after you get used to Ubuntu!).

Specs: 1Gb Ram, Centrino Duo, 1.88 GHz

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Ubuntu Servers :: GUI For Several Thousand Simultaneous Users

Jan 30, 2011

GUI for several thousand simultaneous users. I know this post may at first seem a little out of place here when you begin to read it but please bear with me and I think you will understand why I am seeking feedback here. The company I work for (whose name I am withholding for now) is currently running a little over 5,000 Linux servers. Each of these servers has a minimum of 500 users, some as many as 3,000 users on them during a business day.

These servers are serious pieces of hardware. They have hot swappable raid arrays, redundant well most everything is redundant on them, frankly. Our conversion to Linux took place about 8 years ago. We have a proprietary database and development environment that was originally built in the 1970s. All but the most recent applications run in this proprietary environment, whereas our newer applications are using PostgreSQL and executables that are delivered using Apache web server and run inside each users Windows Explorer session on their local PC.

Really, our situation is rather typical of any organization that has legacy software that still gets the job done - with the possible exception of the **massive** number of total users we keep up-and-running every day. more, our next Linux servers are expected to support somewhere between 6,000-8,000 users [exact figure yet to be determined]. You may ask this is all very interesting but why are you posting this here?.

I am researching alternate ways of presenting attractive and functional GUI to users of Linux servers. I find the Ubuntu GUI to be attractive and very functional. the user input these forums get. Finally I am looking for points of view outside my own organization so I don't fall into the 'but we don't do it that way here' mental trap and miss a really great concept.

I have an idea about how to solve this growing challenge, and I want to present it here for your review and comments. For those who might think I have never worked on systems of this size; I can't imagine my opinion would be valuable remember this: The Ark was built by a passionate volunteer; The Titanic was built by paid professionals.....

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Ubuntu Multimedia :: PulseAudio Lag With Simultaneous Output

Jul 1, 2011

I've got two soundcards in my new machine - Realtek ALC8892 onboard, with headphones plugged in, and an M-Audio Audiophile 192 with speakers. There's also HDMI sound out on the graphics card, but I don't use that.

Audio with PulseAudio's output through the sound card is fine. Audio with PulseAudio's output through the onboard sound is fine. If I set the output to Simultaneous Output, however, I get significant lag. Almost half a second. It's quite distracting.

Is this just a problem with PulseAudio's simultaneous output implementation, or is there a fix that I've overlooked? Running 64-bit Natty, btw.

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Ubuntu Networking :: SFTP Multiple Simultaneous Connections

Feb 7, 2010

I really hope someone could help me with this problem. I've been stuck on this for a month.I am using the sftp command to upload files using a bash script.The problem is that it is extremely slow to do it this way. as many of you would know if you have shared server somewhere. I would use scp if remote server supported it, but it doesn't.

Anyway, If any of you have ever used FileZilla, in the Settings, if you go to "Transfers" there is a place where you can set the number of "maximum simultaneous transfers". This feature works wonders with SFTP (and FTP too). It really speeds things up. How do I accomplish this same thing with the sftp command... because I don't want to use a GUI. I don't even mind using FileZilla through the command line if possible... but it does not seem to be possible. I've been stuck on this for a month!!! I've searched everywhere and tried a lot of things with no avail...

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Ubuntu Multimedia :: Simultaneous Application Launch In BASH?

Feb 28, 2010

I'm trying to launch CoverGloobus (a fantastic little album art and current song display) and Rhythmbox simultaneously through a BASH script. Problem is that when I attempt to run the script the first time, CoverGloobus doesn't launch, but Rhythmbox does. Here's my script as it is right now:


#! /bin/bash
#Opens Rhythmbox and CoverGloobus
rhythmbox && covergloobus

I've double-checked the commands in gnome-terminal, and they're the right ones for launching the applications. Here's where it gets odd, though. The second time I run the script, CoverGloobus and Rhythmbox launch simultaneously. I've reproduced this scenario multiple times.

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Ubuntu Multimedia :: Pulseaudio Disabling Simultaneous Output?

Mar 16, 2010

sat in an internet cafe with my music on loud using my headphones when my cell phone vibrated and upon taking off my headphones I noticed that pulseaudio was channeling all my music not only to my headphones but also to my regular monitor out!

So I was actually listening to music using my headphones when in fact the sound was LOUD on my laptop speakers...

Is there a way to configure the thing to not do that? I want the sound to be muted as soon as I plug in my headphones.

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Ubuntu :: Multiple Simultaneous Keyboards With Unique Layouts

Aug 25, 2010

As the title says, I'm interested in two (or more) simultaneous keyboards, each with a unique layout. Everything I've researched indicates this should be possible, but I'm unable to get it to work. Regardless of how I set things up, all keyboards consistently operate as if they share the CoreDevice setting in xorg.conf.
In the above config, both keyboards behave as if they're set for the USA layout. Changing the layout in gnome-keyboard-properties affects all of the connected keyboards equally, but has no provision for altering individual devices.

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Ubuntu Servers :: Maximum Simultaneous Socket Connection?

Sep 16, 2010

I'm writing a client-server program. There are more than 500 clients. I start a thread to process and response to each client and the processing needs some MySQL query. I'm looking for any possible hazards on my server!

1- Any limitation on "Maximum Simultaneous Socket Connection"?

2- Any limitation on using mysql?

3- As socket on Linux are file, Any limitation on number of sockets or threads?

I'm using a Linux server (Centos or Fedora or Ubuntu) and clients are both Linux and Windows.

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Ubuntu Multimedia :: One Sound Card For Multiple / Simultaneous Uses

Nov 5, 2010

I work for a company that uses Ubuntu exclusively. Without going too much into detail, we need a single sound-card to do up to 3 things at one time. What I mean by this, basically, is that there needs to be 3 instances listening to a card's line-in port at any one time. For example (these are made-up), Audacity listening to the line-in jack and making a recording of what it hears, a custom script that streams the input to the internet, and a third instance that listens to this input and runs different scripts based on what it hears.

Currently, our company sends out machines with 3 sound cards to do this. One card for each job. Of course, we'd like to save money and only send out one. Whenever we try to set all 3 programs to run off of one card, they error out and say something along the lines of "device already in use". Is there a way to go around this? If so, how? We use the command-line version of Ubuntu 8.04. It is NOT x64. The hardware may vary a bit, but is for the most part, consistent. (We order in batches of 50.)

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Ubuntu Multimedia :: Lost Simultaneous Use Of ALSA And PulseAudio?

Nov 7, 2010

i am using ubuntu 10.04 lts "lucid lynx", and has been encountering problems with audio recently.

i found out for some reason that my system fails to produce sound through pulseaudio, especially when an application is using it (e.g audacious).

the details of the problem:

1. i am using the pulseaudio equalizer from the repository, and i set a program (e.g. audacious) to use pulseaudio so that i can activate the equalizer.

2. while playing, all of my other applications lose the ability to produce any sound, and changing back to alsa during playback (which is using pulseaudio) in audacious indicates that the device is busy. examples include the loss of sound while playing a video from videos.

rough breakdown of what i want to (be able to) do: have sound for all applications using it, for example being able to play a video in videos from my browser and play music in audacious simultaneously.

is there a workaround for this? i'd like to think that there is, but so far my search returned nil.

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General :: Simultaneous Multithreading Support?

Jul 15, 2010

I was looking around on Wikipedia, and ran across the UltraSPARC T2 processor. This is a processor with 8 cores (8 physical processors) and 8 threads per core (64 logical processors!)I'm aware of Intel's Hyper-Threading and other technologies, and I know collisions between the threads have the possibility of decreasing the processor's throughput.From what I know, the O(1) scheduler (and surely the current CFS scheduler) is aware of Hyper-Threading, and is careful with processor affinity for threads (mainly, it tries to fill every physical processor before giving any multiple threads, and it tries to keep processes that much move between logical processors on the same physical processor.)

However, although that certainly helps somewhat, I believe the largest gain can come if the compiler is allowed to re-arrange instructions, so that more than two threads can be run at once without collisions in one physical processor. For this to happen, I believe we'd need to come up with a new executable format that can store multiple threads in one file, so the scheduler can schedule them as one block.For example, with the current scheduler and executable formats, the UltraSPARC would appear as 64 logical processors. However, if we consider a system that consists entirely of thread-aware systems, it might look at it as 8 logical processors, and schedule eight processes at a time. Since only one process would exist on each physical processor, the compiler would be able to optimize and significantly reduce resource contention (which I mention below.)

We can look at one physical processor with 8 threads of execution (or any number >2.) If you run 8 different processes, as Linux would currently do, there would likely be a lot of resource contention. My guess is that most of the time, several threads would be waiting for the unit they need to become available. I feel that this is supported because I saw a number from Sun (I forgot where) that the correct optimization settings on their compiler can yield a 300% speedup, on a practical workload.Is there any infrastructure available for Linux that supports processors like the UltraSPARC T2, that have a high number of hardware threads per core? Also, I know this would be a large task to implement, and there would be hurdles (how do you mix multithreaded processes with single-threaded processes on one machine?), and I am wondering if others think there would be enough benefit to justify the effort.

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General :: Can Apache Log Simultaneous Connections?

Jan 10, 2011

We just setup a Moodle server in Apache. We would like to track how close (if at all) we are getting to our MaxClients limit. Is there a log that will show simultaneous connections?If there is, can it be set to only log when specific numbers are hit?

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