Ubuntu Networking :: USB Wifi Adaptor Loses Connection Every Few Minutes
Apr 22, 2011
I just installed the Natty Beta and plugged in a Netgear WG111v3 USB wifi adapter. It is using the RTL8187B driver and worked out of the box. The problem it loses my connection every few minutes. Sometimes not for 10 or 15, sometimes like a minute or less. After it loses the connection, I have to uncheck "enable wireless" (which I assume is the equivalent of bringing down my wireless interface) and then check it again before it will let me reconnect. I don't want to try ndiswrapper because the card works great when it works, including monitor mode and packet injection!
I am setting up a fresh Fedora 10 install on an older computer for a roommate and have one odd little problem, everything else appears to be working just fine.
The network connection drops after about 2 minutes (somewhere between 90-120 seconds). This only happens in the installed Fedora 10; it does not happen at all when I boot a Kubuntu LiveCD.
Here's what I know:
The machine is a Dell Dimenision 4500, 2.0 GHz, 512Mb ram.
The ethernet card is 21x4x DEC-Tulip compatible 10/100 Ethernet.
Unplugging the ethernet cord and plugging it back in allows the network interface to come back up, grabs the right IP, but only holds it for another two minutes.
ifconfig and route show all the right info while the connection is good, but inet disappears once it goes down.
'ifdown eth0' and 'ifup eth0' do not bring it back up.
Firstly, apologies if there is anything incorrect about this request for help. Consider me an intelligent but ignorant first time Ubuntu user. I have a USB wifi adaptor, [URL]../B...ef=oss_product, which claims to be Linux compatible. It was supplied with a CD that includes a Linux directory but windows-only documentation. How do I install the drivers etc, the device is currently entirely unrecognised by Ubuntu 10.04.
I just installed 10.04, just migrating to linux. I can't see the network manager anywhere. I have the applet installed. I can't get the wifi adapter enabled. The chipset iwl8345 shows on the output when I run config. It seems to me that I need to get the NM up and that should doit. here is ishw:
i have an ubuntu server box as my gateway and firewall. for days at a time itll run fine, then one or two days out of the week, it will drop connection often because it drops its ip addr. when renew an ip, itll work fine for about 5 minutes and drop again.ive tried different nics, different wire, my logs dont mention anything, my cron files dont have anything suspicious.
I am fairly new to linux. I have Ubuntu 10.10 on my Dell Inspiron E1705. While browsing my internet connection suddenly stops working. It says that I am still connected but the internet doesn't work. When I try to disconnect then reconnect it will not connect to the network. To get it to reconnect i have to turn of the wireless card, delete the connection then restart, turn the card back on and reconnect.
I have windows 7 dual-booted with ubuntu. Im having issues with ubuntu however and i am very new to using linux (sorry). When i intalled ubuntu and ran on it a seperate partition everything seemed to work fine until i tried connecting to the wireless internet in my university. This is what's driving me crazy. When i first turn ubuntu on it connects normally to the internet, and i can usually get onto google for 30 seconds. After 30 seconds, the wireless loses its connection and the internet shuts off, even though it can still detect the wifi in the area. I try to reconnect but it consistently fails... I also get some sort of .local avashi error message (dont remember what it said exactly) for a brief moment and then it fades away. Can someone tell me what to do? This is driving me crazy. btw, i have a realtek rtl8191 wlan nic driver installed on windows, so im assuming thats the driver installed on linux to. Do i need to install a different version like kubuntu or xubuntu?
When using a Verizon UM150 aircard, it is quickly recognized in Ubuntu 10.04. It installs and connects quickly and seamlessly. After anywhere from a few seconds to a few minutes it disconnects and then disappears from the network manager. To reconnect I have to exit and reboot into Ubuntu. I suspect that there is a conflicting driver that needs to be blacklisted.
I am using Ubuntu Studio 10.04 LTS and I am experiencing the following problem: my computer loses its Internet connection and appears to require several reboots to re-establish an Internet connection.
As suggested on a similar post relating to wireless connection loss, I supply the output of sudo lshw -C network
Note that I have REMOVED my wireless card in case there was some kind of hardware conflict or failure. I am using a wired connection through a Linksys WRT54G router that is supplying an Internet connection to another computer and an IP phone without any problem.
When I run the command network-admin (or select System > Administration > Network) I can see only 3 tabs (General, DNS and Hosts) It seems that the Connections tab has disappeared (and I believe this happened when I upgraded from Ubuntu 9/Karmic Koala). If I click Help it shows me that there should be 4 tabs, not 3.
The connection dropping began prior to my decision to upgrade. In fact it took several attempts to complete the upgrade. Should I attempt to re-install the upgrade? I am not sure how to do it without losing my connection. When I visit System > Administration > Update Manager, I am informed that my system is up to date.
My friend has a Acer Aspire One netbook that runs on linpus. It has difficulty connecting via the internal wi-fi interface to the BT Homehub (802.11n) If I were to pick up a wi-fi adaptor such as:
[URL]
Where could I find the drivers to make this USB stick work?
I have 2 connections, wlan and wired, and I'd want to have a few websites (in my browser) to connect through the wireless connection while other go through the wired rj45 connection. s it possible? (without unplugging the rj45 cable...)
I have a Acer Aspire 7535-5020 laptop with a Atheros AR5B91 wireless adapter & lose my connection after about 10 minutes.The only way to reconnect is by rebooting.I read in another thread that installing the linux-backports-modules-karmic would solve the problem.However when I try to install it I get the message, Error Dependency is notsatisfiable:Linux-backports-Modules-2.6.31-22 generic.
Having struggled to get the wireless connection at least working I find it drops out after 15 minutes or so. When I check for wireless connections I can see none at all and the "Disable/Enable wireless conncection" has disappeared, the Network one is still there. I get an auto reconnection if I reboot and all is well for another 15 minutes. Is there any way i can recover the situation without a reboot? I am trying to install the hplip-3.11.5 driver for my new wireless printer,the program take a while to install and by the time it has started looking for the printer the connection has dropped out. I can't be sure but I don't think it was dropping out before I connected the printer using my wired pc. All good fun but I'd like to get it sorted so I can get the engine back in my motorbike, the sort of technology I prefer!
I installed Fedora 14 yesterday via the installation DVD with 3,3 GB. Everything worked fine and when I connected to my wlan and entered the WEP key I got access to the internet. But after about 5 minutes, to connection just got cut and I was again asked for the WEP passkey. But when I entered it this time, the connection failed and I was just asked again (with the same key entered, it even got it saved from last time). As you can think, this is quite annoying, since the time I have internet is not even enough to get some updates done.
Ah, and by the way: The time I have internet it just is unbelievably slow. On my Windows partation, I don't have this problem. I do have a small hint what might be the problem: When I was using Ubuntu, I always had a similar problem, but it did not even connect to my wlan once. The solution was to blacklist some driver, but since I don't know if this might be the problem on Fedora too and if the drivers are the same as on Ubuntu and since I really have no idea about the syntax of the terminal here, I was not daring to try this out.
Hello, I've installed OpenSwan with xl2tpd on my server, and set it up for roadwarriors connecting using certificates.
My server is Debian 5.0.8, I am running xl2tpd 1.2.0, and Openswan IPsec 2.4.12, my clients are all Windows, and I am testing my setup on a Windows 7 client.
I have no problem connecting to the server, but after some time the connection drops. I removed the idle option from the ppp config but it does not make any difference.
Even when I create constant traffic with ping -t the connection drops also.
I have no problems reconnecting right away.
I have been hacking at this for a couple of days, reading every post I can find, but I have not found a solution to my problem.
I'm running Ubuntu 10.10. I have a problem with any client side network communication from any java based program/application. I've tried to run the following code:
Code: public static void main(String[] args) throws Exception { long start = System.currentTimeMillis(); Socket s = new Socket("ubuntuforums.org", 80); System.out.println("1. connection created in "+ (System.currentTimeMillis() - start)/1000.0 +" s"); s.close(); start = System.currentTimeMillis(); s = new Socket("ubuntuforums.org", 80); System.out.println("2. connection created in "+ (System.currentTimeMillis() - start)/1000.0 +" s"); s.close(); }
The result is the following: Code: 1. connection created in 189.31 s 2. connection created in 0.085 s
I've tried both java-1.6.0-openjdk and java-6-sun-1.6.0.24 with almost the same results. During the extremely long 189 seconds, the processor is doing almost nothing (java thread has 0 %). I've tried also a wireshark to check what is going on, but the first packet was released after those 189 seconds. There is nothing in log files, I have no exceptions or errors, and the connections work (after the first long delay) just fine.
I do have a problem with my internet connection at home, I've a Huawei router and ubuntu 10. When I connect to the internet whether wireless or wired I become able to surf the internet for less than 10 min then it cuts off! and to be able to surf it again I need to restart the whole system!
I used this command to restart the networking but in vain Code: sudo /etc/init.d/networking restart
On windows I do not face this problem with the same internet connection. I do not face it either when I'm using my campus wireless connections using ubuntu/windows!, so the problem is related to my home connection+ my OS.
I am new ubuntu user . I installed - ubuntu desktop v9.10 32bit. I have BSNL (Indian Telephone service) broadband connection. In Windows 7, BSNL broadband connection is working fine.
Now in ububtu I try to establish ADSL connection using following command: "sudo pppoeconf". It open a console based wizard and I'm able to create the connection. But this connection is sustain hardly 4~3 minute, after that it is disconnected. So, Again i have go through the same process again and again.
I have fedora 10 and am having problems with the wireless access. My computer uses the Realtek Semiconductor Corp. RTL8187B Wireless Adapter. It connects to the network, it gets an ip address and a broadcast address, but it loses connection within 3 min. I'm also new dealing with linux and fedora.
I have a Dell 1545 laptop with ubuntu 9.1 32-bit installed (the 64-bit had a bug with the wireless drivers which is why I have not used it). Initially, the laptop worked well with the wireless (a sky router with WPA security) but now, the wireless signal drops after a couple of minutes of usage. I have to reboot the laptop or sometimes reboot the router as well to regain the wireless signal. I am using the Broadcom STA proprietary wireless driver.
I have an older dell inspiron 6400 as well with the same OS and driver and it works perfectly without any problems for hours / days.
I buy a new usb network adapter (Through DX), when I try to use it in ubuntu or BackTrack4 Final it is working, and connecting networks even with WPA encryption. But after few minuts it stops working totally. It is showing that I'm connected to the AP but web sites do not respond.
Notes: - I have another PCI Wireless adapter which works fine.
- The problematic adapter works great on windows.
- A driver CD came with it, including a linux driver which I wasn't succesfully installed.
- A BackTrack3 Disc came with it, claming by the instructions that the adapter will work with it. I didn't try it because i have backtrack 4 final.
It took me dozens of surfing the web hours, and too many restarts,
I have been having trouble with Ubuntu 11.04 when connecting to the Internet via Wireless Networking. It will connect, and has good speed once it connects, however it takes upward of 10 minutes and over 20 times of me clicking 'Connect'.
Is there a way to connect to a wireless network quicker? My network is unsecured and without a keyring. It is not only slow connecting to my network, but the network of other's.
I have an LG R-450 laptop with Ubuntu 10.04 installed in it. When I connect him to a network (either LAN or Wireless) it stays connected for a few minutes and then Just disconnects (without showing any sign of disconnection except no internet/skype/dropbox). Only way to renew connection is after startup. The network controller is SIS 191 Gigabit Ethernet adapter.
I'm running Fedora 12 on an Acer Aspire One with KDE. The built-in wireless works without a problem EVERYWHERE except at work. It's a shared wireless connection using WPA/WPA2 security.I can connect but it's "hit-and-miss" if I can do anything with it. Somedays it works well for a few minutes then has a period of inactivity - then slow - randomly receives...It worked flawlessly when the computer was running Windows7 no one else has connectivity issues but I'm the only one using Linux.
I have Vortexbox (fedora distro) installed on a laptop which I am using as a media server. I would have issues where I thought the laptop would go to sleep and disconnect itself from the internet. The computer boots in command line mode and what I would notice is that the screen would go blank and then I would have to go to the computer and jiggle the trackpad and it would wake up. I posted about it and got responses related to the gnome desktop which I could not find the files referred to in the answer.
I tried using setterm to keep the computer awake setting blank to 0 and powersave off. The same thing happens even with the monitor on and the screen display on. A gesture on the trackpad seems to wake the ethernet back up. Here's my old post: [URL]. Everything else about this situation is perfect. Vortexbox is easy to set up and it does everything I want, DLNA, streams to my squeezeboxes, etc, but this ethernet cutting out is exasperating.
I've run into a strange problem on one of the servers I maintain. It's running CentOS 5, fully up to date. The server has Monit installed via RPMforge, and runs Postfix as its MTA. Every day at about 4:20am, when cron is running, Monit loses its connection to Postfix. As far as I can tell, nothing is actually going wrong with Postfix and it's always restarted just fine. I run a couple of Debian servers with very similar setups, and the problem does not occur on them.
Perhaps related, other daemons on the CentOS box often lose their pid files at the time when cron runs, which results in Monit thinking they're not running. One service in particular (zarafa-dagent) is so bad for this that I've had to completely disable monitoring of it in Monit. Again, this problem doesn't occur on the Debian boxes I maintain.The problem isn't hugely urgent as everything still runs fine, but it does mean that pretty much every day I get false positive mail alerts from Monit, which is (a) annoying and (b) makes me more likely to miss a real alert.
I've just installed the ubuntu 9.10. I have one problem with it. I have a home net in configuration: Windows XP on a cable, Ubuntu on a cable and Windows on wifi. When I'm surfing on the net on Ubuntu, Wifi isn't work how it should. It's very slow and I don't know what to do with it. Windows XP on a cable is OK, it works good. What happen and how can I repair it?
I just recently installed Ubuntu 9.10 on a dell laptop. My WiFi connection that I've been using on the same computer for years is not working when I log on. However if I run the burnt image cd and choose the option "Use Ubuntu without making any changes to your computer" I am asked if I want install proprietary drivers. If I activate one "Broadcom STA" I can connect to the wireless connection in my house. When I am using the version installed on my laptop it doesn't ask me if I want to install the drivers and it doesn't even find them when I go to hardware drivers under system. So to sum it up I can get connection when I run Ubuntu from the cd but not when I run the Ubuntu on my laptop.
I cant connect with ssh to my workstation using my notebooks wireless lan. with cable I'm able to connect.so the funny thing is, if I first establish a connection from my workstation to my notebook (like ssh it or just ping the notebook) I'm able to create a ssh connection from my laptop to the workstation using wireless lan.scanning my workstation from the wireless lan of my notebook with
Code: nmap -sT -p 22 ventury says port 22 is closed
scanning it from the notebook with cable lan,it says port 22 is opened
scanning it from the wireless lan of my notebook an have sent a ping from the workstation before says port 22 is opened.ution.
I got a 64bit version of Kubuntu 10.04, up to date, installed on both, my workstation(ventury) and my notebook (defiant).the question is: Do I always have to ping my notebook first if I want to ssh from it to my workstation or is there some other solution? And why does it work fine with cable, but not with WiFi?
