Ubuntu Networking :: Hamachi Hub Dropping And Reconnecting Connection

Jan 10, 2011

I've just loaded the new Hamachi2 Linux beta with Haguichi for a GUI. Everything installed & connects OK, but the connection at the hub is dropping & reconnecting every minute or so. I tried adding a line to the sshd_config file to keep it alaive but it didn't make a difference.

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Fedora Networking :: F13 Dropping Internet Connection And Not Reconnecting

Sep 26, 2010

I am running F13 on my Desktop (with a Ralink RT2870 wireless card) and also on my Laptop (Acer Aspire 5738Z) and am connecting to the internet via a NetGear router. On my Laptop I can connect to the internet fine with no problems. However on my Desktop when I turn my computer on it connects to the internet fine, and works, however after some time (maybe 5-10 minutes) it disconnects and the box asking for the password reappears, then I click connect but no joy.

The connection box just keeps reappearing and it won't connect again until I restart the computer (although sometimes it takes more than 1 restart!). This is not a signal issue, as my Desktop also has a Windows partition and that connects to the internet fine and does not drop off. I have installed the RT2870 driver through rpmfusion, which didn't fix the problem, although uninstalling the driver didn't stop the card from working.

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Fedora Networking :: Wireless Connection Has Begun Dropping Every Few Hours And Not Reconnecting ?

Mar 9, 2010

I have a Dell Inspiron 6000 laptop running Fedora 12. Recently my wireless connection has begun dropping every few hours and not reconnecting. After trying for about 30-45 seconds, the WPA password prompt comes up but still doesn't connect.

Fedora release 12 (Constantine)
Kernel Linux 2.6.32.9-67.fc12.i686
GNOME 2.28.2
Memory: 2.0 GB
Processor: Intel Pentium R 1.60 GHz

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Ubuntu Networking :: Wireless Network Continually Dropping And Reconnecting?

Apr 13, 2011

Within the last couple of days or so, my wireless has been on the fritz. It keeps disconnecting and reconnecting every minute or so, which is annoying to say the least. The information relating to my wireless network is:

Laptop model: Toshiba Satellite L350
Wireless interface: Atheros AR5001 Wireless Network Adapter
Interface:

[code]...

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Ubuntu Networking :: No More Dropping Connection But Really Slow

May 10, 2010

Lately I have been using my window's partition due to the fact that 10.04 drops my wireless signal every 5-10 minutes, but today I downloaded the new updates and that seems to have fix the issue with the dropping of the wireless connection. Now the only problem is the internet is so slow when trying to go to webpages it times out. I have opened up firefox gone to about:config and changed the necessary lines, but still dreadfully slow.

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Ubuntu Networking :: Wireless Connection Keeps Dropping?

Nov 4, 2010

My wireless connection keeps dropping is very unstable, signal strength goes up and down here is the info i got from the terminal

*-network:0
description: Ethernet interface
product: 82801DB PRO/100 VE (MOB) Ethernet Controller
vendor: Intel Corporation

[Code]....

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Ubuntu Networking :: 9.10 Dropping Network Connection Randomly?

Feb 20, 2010

I have a windows installation (partition) but have installed into freespace on the same drive using the auto-partition manager, etc, and everything is fine. I got my network going fairly easily by going Preferences > Wireless and inputting SSID and WPA encryption key (PSK). My router issues an WLAN IP, I can get on the net, I can see my other Windows PCs on the network, I can reach my router, and all is good.So after several hours of mooching about and looking at things, I have updated all the Linux packages via Synaptics (following a prompt to update everything) including GRUB. My dual boot now shows two versions of the OS:

GRUB 1.7~Beta4
Ubuntu, Linux 2.6.31-19 - generic (I am booting this one)
Ubuntu, Linux 2.6.31-14 - generic

I also set up my HP F4580 printer over wifi on the network though with slightly incorrect drivers (for the F4400 series as this was recommended at the closest match). It works, and I can print a test page no problem.The only thing is that now (since doing all that) Ubuntu seems to periodically drop my connection to the network and then request the network PSK again, but when I enter it, it spends time trying to renegotiate but fails, and then re-requests the PSK, over and over and it never reconnects. I have to reboot and then I can connect again (automatically), until it drops at some random point (like 5 or 10 mins later)

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Ubuntu Networking :: Wired Connection Keeps Dropping Out / Resolve It?

May 13, 2010

Two weeks ago I decided to ditch my XP install completely and switch to Ubuntu 10.04. So far so good, and I'm very happy with my decision. However, about 3 days ago, my wired connection started playing up. It keeps dropping out every 2 hours or so between 13.00 and 04.00. After dropping out, it immediately reconnects again (at least when I use Automatically DCHP config). From 04.00 to 13.00 it is more or less stable.

I tried resolving by reserving an IP in the DCHP Client Table in my router (linksys WRT120N). Additionally, I told the Network Manager to use the Manual configuration. Unfortunately these changes didn't help and the problems stay the same......

The daemon.log shows the following information code...

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Ubuntu Networking :: EeePC 901 Dropping WiFi Connection - Need New Driver?

Jan 5, 2010

Here's the situation: I've got an eee pc 901 running Ubuntu 9.10 netbook remix. I'm using it to connect to a WPA-encrypted wireless network on a WRT54GL running dd-wrt. It mostly connects and works ok, but sometimes it just stops working for no apparent reason (the netbook still shows itself as connected), but you can't get anywhere until you manually disconnect and reconnect. Other times, it will drop the connection, and then quickly reconnect (or sometimes not). Obviously, this behavior is pretty irritating. At first I thought the problem was with the router, but I checked the logs there and they all seem fine, and other computers on the same router don't have this problem. Looking at "dmesg | tail" on my netbook, I see a lot of instances of the following error, which I'm thinking is probably the problem:

Code:
[11137.762233] ERROR!!! RTMPCancelTimer failed, Timer hasn't been initialize!
[11142.872797] ===>rt_ioctl_giwscan. 4(4) BSS returned, data->length = 440
[11152.883274] ===>rt_ioctl_giwscan. 5(5) BSS returned, data->length = 556
[11152.883529] ==>rt_ioctl_siwfreq::SIOCSIWFREQ[cmd=0x8b04] (Channel=11)
[11163.952056] ERROR!!! RTMPCancelTimer failed, Timer hasn't been initialize!

I searched for that error message and I found this Ubuntu bug report: [URL] that describes symptoms that match mine. In that report, a poster mentions that he compiled and installed a new version of the wireless driver from the Ralink website, and it fixed his problem. Do you think installing a new driver would be good? Or has that updated driver already been added to the kernel since that bug report was filed? I've never compiled a kernel module before.

One other thing, I also see repeated instances of these lines (or similar ones) in dmesg, which look like they could be related.
Code:
[44096.275923] RX DESC f30ca000 size = 2048
[44096.276885] <-- RTMPAllocTxRxRingMemory, Status=0
[44096.281404] --> Error 2 opening /etc/Wireless/RT2860STA/RT2860STA.dat
[44096.281424] 1. Phy Mode = 0
[44096.281435] 2. Phy Mode = 0
[44096.309841] 3. Phy Mode = 0
[44096.314533] MCS Set = 00 00 00 00 00
[44096.316196] <==== RTMPInitialize, Status=0
[44096.316280] 0x1300 = 000a4260
[44096.401269] ==>rt_ioctl_siwfreq::SIOCSIWFREQ[cmd=0x8b04] (Channel=11)
[44096.472502] ===>rt_ioctl_giwscan. 1(1) BSS returned, data->length = 116
[44096.472977] ==>rt_ioctl_siwfreq::SIOCSIWFREQ[cmd=0x8b04] (Channel=11)
[44106.768056] ra0: no IPv6 routers present

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Ubuntu Networking :: Wireless Connection Dropping Out But Still Showing It Is Still Connected?

Jan 20, 2010

as the titles states my wireless is dropping out but the networks manager is still saying i have a connection. the only way i have been able to be on the network every minute or so i have to manauly disconnect and reconnect to my wifi. under my windows 7 and vista installs the wireless card works fine now my card is a dlink dwa-547 and it uses the arthores chipset, it is encprtyed wifi, wpa2 aes on a n/g based network

Code:
peter@ubuntu:~$ sudo lshw -C network
*-network
description: Wireless interface
product: AR5008 Wireless Network Adapter

[Code]....

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Ubuntu Networking :: Thinkpad W500 Wireless Connection Keeps Dropping

Oct 27, 2010

I have a Thinkpad W500 with:

Code:
Network controller: Intel Corporation Wireless WiFi Link 5300
I have Ubuntu 10.04 32bit installed:

Code:
Linux dani-laptop 2.6.32-25-generic #45-Ubuntu SMP Sat Oct 16 19:48:22 UTC 2010 i686 GNU/Linux

It has been working fine since I installed 10.04 but recently (end of last week I think) it stared dropping the wireless connection very often. So it will disconnect and reconnect, but I can't seem to find a pattern, sometimes it goes for hours without an issue and sometimes it does it several times in a row. Below is an extract of syslogs from when this happens. But not sure if what I need is there... the only weird thing I can see is:

Code:
Oct 27 18:58:33 username-laptop wpa_supplicant[1296]: CTRL-EVENT-DISCONNECTED - Disconnect event - remove keys

Code:
Oct 27 18:58:32 username-laptop wpa_supplicant[1296]: Trying to associate with 00:1e:be:a6:c0:0f (SSID='accessp' freq=5280 MHz)
Oct 27 18:58:32 username-laptop NetworkManager: <info> (wlan0): supplicant connection state: completed -> associating
Oct 27 18:58:32 username-laptop kernel: [123835.372217] wlan0: deauthenticating from 00:1e:7a:6f:d9:90 by local choice (reason=3) .....
Oct 27 18:59:29 username-laptop ntpdate[4765]: no server suitable for synchronization found

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Networking :: Dropping Internet Connection / Strange IP Addresses?

Oct 17, 2010

I usually start up my Internet service by typing ./rc.inet1. While its connecting I usually see my routers ip address then I connect and I start browsing and everything is fine. A few times I noticed that instead of seeing the routers address it showed some other address and I could not get online. I try ./rc.inet1 stop and renew but still cannot connect, I reboot and I then see the router and I can connect. I am using slackware13, and opera10 browser.

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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 :: WiFi Dropping And Dropping Speed

Feb 25, 2010

As soon as i'm starting to copy a large file enough file (>700Mb) to my ubuntu box (connected to an Asus router via wifi) from a Windows 7 client (connected to router via ethernet cable) i get a dramatic drop in speed. upload starts at 1,0Mb/sec with a ping to ubuntu box at <1ms, and in 2 minutes it drops to 200kb/sec with a ping of over 1000ms! The ping increases with every second in a linear progression.

To exlude router as a possible problem copying to a windows 7 notebook connected to router via wifi results in an average of 2,7Mb/sec with an average ping of 150ms.

MB Model: Asus P5B Deluxe wifi
OS: Ubuntu Server 9.10 + desktop installed
Wifi configured via GUI

2. lsusb

3. wlan0

4. lsmod

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Software :: Hamachi Connection Slowly Deteriorates And Ultimately Fails?

Jun 3, 2010

I'm relatively new to Linux, but I'm learning fast. Right now my Linux box is serving as a file server for my network, and as a test bed for learning various tools and actions with Linux. Anyway, I loaded up the latest version of Hamachi, following a tut I found to the intertubes. I got logged on fine to my Hamachi server, and for a few moments the connection looked fine. Eventually the connection started going back and forth between "ok" and "stale", before "failing" and then ultimately leaving me with a blinking green light in Hamachi (note: I'm watching this on my Windows XP machine, also note: not really sure what the blinking green light means but I can tell you that I'm no longer connected)

After many google searches, I've found a lot of pages associating problems with Hamachi to tuncfg. I've also noticed that along with the hamachi tarball on the ftp, the folks at LogMeIn have also provided a file called "tuncfg.patch". So I can only assume that the problem has something to do with tuncfg.Just wondering how I can troubleshoot this problem. I'm running Ubuntu 5.10, and the Hamachi version is 0.9.9.9-20

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General :: Creating Stable, Automatically Reconnecting PPTP Connection In Ubuntu

Aug 13, 2010

I've been using network-manager-pptp to create a PPTP VPN connection in my Ubuntu virtual machine for a while now, but I have constant problems with random disconnects. I don't know what the cause of the problem is, but I suspect that network-manager-pptp is not the most well-written piece of software around...

Is there another way of instantiating PPTP connections in a more robust manner? The same PPTP server works reasonably OK with Windows 7 (some disconnects, fewer than in Ubuntu, and Windows has an auto-reconnect feature).

I read some guides on using the pptp command, but they all seemed pretty low-level, messing around with ppp. I never found the time to figure out how it all was supposed to fit together. Has anyone accomplished what I'm trying and is willing to share the knowledge?

EDIT: Tried kvpnc, and it seems the stability is more or less the same as network-manager-pptp. The error message is "Modem hangup".

To clarify, I understand that the connection can go down, but I want to be able to reconnect automatically when disconnected.

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Fedora :: Sound Breakup In 12 - WARNING: Connection Failed Reconnecting

Apr 2, 2010

I have serious sound breakup with fedora 12. When I try I get: gnome-volume-control: WARNING **: Connection failed, reconnecting over and over. I know there is a price to be paid in terms of time and effort to run Linux. But I don't really want to have to fiddle with my sound system each time I upgrade. Every time I get my hopes up that Linux is easy enough to attract wide appeal, something comes along to show me I'm wrong. Most people don't want to live with the hassle. I will continue whether I get an answer or not. I will figure this out one way or another. But if more people were attracted to use Linux it would be easier for all of us.

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Ubuntu Networking :: Hamachi Installation On 10.04?

May 7, 2010

I've tried to install Hamachi on my Ubuntu 10.04 but it was unsuccessful. I followed the steps below based on a tutorial i found on the web: 1. Made the fake module "tun", necessary for running VPN apps, which in Ubuntu 10.04 is already compiled in the kernel.Reading several forums on the web they say it was a "work around" for getting VPN apps to work...

A - mkdir faketun
B - cd faketun
C - echo -e "#include <linux/module.h>

[code]....

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Ubuntu :: Wireless Connection Keeps Dropping / Fix It?

Jan 24, 2011

Just installed kubuntu 10.10 on a dual boot with winxp on my asus r101 netbook.
wireless connects perfectly, but after roughly 30 seconds, i cant access any address or ping an url or ip. however network manager says im still connected. so i click on network manager, and click on the wireless connection, it then reconnects in a couple of seconds, and all is good again. i carry on browsing, and 30 seconds later the same happens again!!!
my wireless signal is fairly week, however connection works everytime and in xp this is not an issue.

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Ubuntu Networking :: Running Hamachi In VirtualBox?

Nov 2, 2010

run a Hamachi client in a Windows virtualbox and be able to set it up (using network bridging, maybe?) like Hamachi was running in the host itself.

I'm most definitely not a networking expert, but I thought it would be worth a try to see if anyone had any ideas. Hamachi for linux is outdated and unstable.

Also, if this isn't possible and anyone has another cross-platform zero-config VPN solution as stable as Hamachi

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Ubuntu Networking :: Hamachi With Remote Desktop?

Feb 4, 2011

I actived Remote Desktop on my ubuntu laptop and i want it to be reacheable from remote out of LAN so i installed hamachi but i'm not sure how to make it work..

i installed it on the laptop and i create the network (id+pwd) then i installed hamachi on the pc (with windows) and i login to the network and it gives me the ip (5.225...etc) as you can see from the client i cant ping at this point could i acceed at the remote desktop with that ip?

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Ubuntu Networking :: Having 2 Hamachi Servers On One Network?

Jun 22, 2011

i'd like to set up 2 hamachi servers on my network. one is already running...would setting up a second one be a problem? they would both be on the same router

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Ubuntu :: 10.04 Can't See Wireless Connections - Dropping Connection

May 7, 2010

I was having trouble with my wireless connection, it was dropping every 5 minutes or so after upgrading to 10.04 and ran across a thread where someone recommended entering

Code:
sudo apt-get install linux-backports-modules-wireless-lucid-generic

After entering the command I have lost all ability to even use my wireless ability even if it was for 5 minutes. Now I am using a different kernel, internet still drops every 5 minutes, but would love to get my internet up and running again.

I am using a Dell Studio XPS Laptop

Code:
*-network
description: Ethernet interface
product: MCP79 Ethernet

[Code]....

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Ubuntu Networking :: Setting Up SSH Server (Hamachi Based VPN)

Jan 8, 2011

I recently started to set up a SSH server, I was able to set up a Hamachi based VPN and was able to connect to it on all levels, for about 5 min, after that the server goes into idle mode and is no longer able to connect to that computer via LAN or Hamachi. Not till after I shake the mouse can I connect back in via LAN, and I have to log out and back in of Hamachi to get that to work. Is there a way to stop the Internet shutdown on that computer when it goes into idle mode? SSH servers are more or less useless if it doesn't let me tunnel in when I need to. This is for Ubuntu Server.

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General :: Ubuntu Box Keeps Dropping Wired Network Connection?

Jul 11, 2011

I have an Ubuntu box, 11.04 x64, running on a Dual Opteron SFF box (iWill ZMaxDP... pretty old machine). Up until a few weeks ago, it was acting as a Windows 2008 Server, but i moved it to Ubuntu.

Anyway, the machine will not stay on the network for any amount of time, without falling off... I have changed network cards, cables, ports on the switch, etc, and nothing seems to work. I have a Windows 2003 box giving out DHCP addresses, and for a while, i actually tured that off and setup a second Ubuntu box to give IPs... it made no difference. The box gets an IP, and can ping outside for a bit (2 min or so) and then just looses connectivity... ifconfig shows it with an IP (i have tried both Static and DHCP config) and nothing seems to work...

[Code]...

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Ubuntu Multimedia :: Sound Works At First But Keeps Dropping Connection

May 16, 2010

I've installed Lucid Lynx in both kubuntu and xubuntu variants, and experienced the same problem, (Note I'm also still running 9,04,on the same computer, trouble free). With 10.04, the problem is that sound playback software works initially, but drops the connection with the sound driver randomly, at times varying from a few seconds to a couple of minutes. It seems to happen regardless of whether Alsa or PulseAudio is set as default. This happens with Movie Player, VLC, Audacity, and with Flash in Firefox - they all appear to start normally, with sound, but soon fail. (Again, I don't have this problem with earlier releases, using the same computer) I know little about sound configuration.

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Ubuntu Servers :: Dropping Network Connection And Other Errors

Sep 11, 2010

I set up the web/backup server for our department and I'm having some major issues. Firstly, the server seems to be dropping the network connection periodically. I checked all of the logs and it appeared to be an IP6 issue as the only message that seemed to correlate with it was "eth0: no IPv6 routers present" in syslog. I added "ipv6.disable=1" to my boot options in menu.lst and this seemed to take care of the problem. However, I woke up this morning and the server was back down.

This didn't seem to take care of the problem. It seems to occur when my automatic backup scripts go through. I have several BASH backup scripts that use rysnc over SSH to backup several computers to the server and the server to my desktop at home. I was able to trigger the problem a couple of times running the backup script this morning. Now, I'm getting the following error when running the script, instead of losing the network connection:

Code:
Sep 11 10:22:40 chemistry kernel: [ 396.892699] BUG: unable to handle kernel NULL pointer dereference at 0000000000000118
Sep 11 10:22:40 chemistry kernel: [ 396.892715] IP: [<ffffffff811426c0>] __dentry_open+0x240/0x370
Sep 11 10:22:40 chemistry kernel: [ 396.892728] PGD 1113d5067 PUD 11458c067 PMD 0
Sep 11 10:22:40 chemistry kernel: [ 396.892737] Oops: 0000 [#1] SMP
Sep 11 10:22:40 chemistry kernel: [ 396.892743] last sysfs file: /sys/devices/system/cpu/cpu1/cpufreq/scaling_governor
Sep 11 10:22:40 chemistry kernel: [ 396.892750] CPU 1 .....

I tried booting with a previous kernel to see if that was the problem and I'm still getting this error. I've searched through all of the logs that I could think of to try to track down any software based problems and I just don't see anything. In the past, whenever I've run into such serious with a Linux box that popped up out of nowhere, it's always been a hardware failure. I've currently disabled all of the backup scripts and I'm going to see if it lasts through the weekend.

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Ubuntu Networking :: Ethernet Keeps Disconnecting And Reconnecting?

Oct 26, 2010

I installed 10.10 for some days ago, networking was working smooth back then. I use a ethernet cable to connect to the internet.But yesterday when I installed 10.10 on my brothers laptop(he connects through wireless), I began to get these disconnects and reconnects.They just seem to happen random.

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OpenSUSE Wireless :: Connection Dropping On Both Laptops With 11.3

Feb 8, 2011

I'm using an Acer Aspire 3000 since Opensuse 9.3. Wireless connection was fine with ndiswrapper. I upgraded to 10.0 and wireless was perfect with the broadcom firmware. Now I just installed openSUSE 11.3 and my wireless connection became a nightmare: connection drops multiple times in a day and network manager remains stuck in "Interface Configuration". Sometimes I'm asked for the wpa password but Network Manager is unable to reconnect until I disable and re-enable my wlan card using the killswitch. The access point is the same zyxel b+g I own since 5 years! I just bought a new eeepc and I installed on it openSUSE 11.3 too. The network connection behaves the same!! The Network Manager says "Interface configuration" and I must switch the wireless off and on to have the network back. I made a radio scan and I'm using a channel on my own. I also tried to disable dhcp without success.

ACER
# uname -a
2.6.34.7-0.7-desktop #1 SMP PREEMPT 2010-12-13 11:13:53 +0100 i686 athlon i386 GNU/Linux

# lspci -vvvnn
00:0b.0 Network controller [0280]: Broadcom Corporation BCM4318 [AirForce One 54g] 802.11g Wireless LAN Controller [14e4:4318] (rev 02)
Subsystem: AMBIT Microsystem Corp. TravelMate 2410 [1468:0312]
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 64
Interrupt: pin A routed to IRQ 17
Region 0: Memory at e2000000 (32-bit, non-prefetchable) [size=8K]
Kernel driver in use: b43-pci-bridge .....

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General :: Wireless Connection Dropping About Every 2 Minutes?

Jan 28, 2011

I am having an issue with my wireless connection dropping about every 2 minutes (web pages timing out), then working for a couple of minutes then dropping again. The connection icon in the task bar says I'm still connected at about 70%.I have a dual boot system and the wireless works fine in opensuse but not in Ubuntu 10.10 I have an Asus G50vt-X5 laptop but I am not sure about the wireless chipset.

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