Ubuntu Networking :: AR5001 Chipset - Wireless Networking Randomly Loses Connectivity And Can Not Regain Connectivity
Jun 25, 2011
Wife's laptop has AR5001 Wireless Adapter laptop model is Toshiba Satellite A215
Problem : Wireless networking randomly loses connectivity and can not regain connectivity, the only apparent solution is a full power down , this is not even certain to work. The card works under Windows, she hates Windows. (I love her for this) I know it's not faulty hardware , because it will work for days on end under Windows without problems.
Things I've tried : madwifi drivers (any and all versions available) : These increase stability of the signal and seem to delay the inevitable however it still happens. When using these drivers the only option is to unload them modprobe -r then reboot then remove them again and re add them. It makes no sense why this works, and if I don't remove them prior to rebooting it will not work.
ATH5K drivers : These are pretty much junk, results are unpredictable at best, sometimes it will work perfectly for a few hours, sometimes it will not work at all. Nothing is repeatable, I can't seem to force whatever condition is causing this. rfkill does not show the wifi being blocked (hard or soft), unblocking it anyway does nothing, only way to make this work and it's iffy is to fully power down wait 5-10 minutes turn it back on and it MAY decide to work.
Firmware update : Updated the Toshiba BIOS to the latest version of the firmware 2.0 no joy here either. Same issue both sets of drivers.
Tried different distros and kernels : I've tried Mint 9, 10 ,11 ; Ubuntu 10.10, 10.04 , 9.10 and 11.04 (which is currently installed) , Fedora and OpenSUSE. All are giving the same problems. I have also tried a slew of different kernels no joy from any of them (I'm not at the computer with the issue now I will post exactly what kernel versions I've used when I have access to the machine).
Another useful bit of information, the hard switch to disable/enable wifi WILL disable it but turning it back on does absolutely nothing. The hotkey does nothing at all. The bios does not have an option to disable or enable the wireless card.
I will also post the typical lsmod , lspci , iwconfig all that good stuff when I get back to the computer in question. I'm probably just going to buy a PC card for it and give up on that one, but this is driving me insane and I would really like to see it resolved even if I do replace the hardware.
I've been trying to use the wireless adapter that came shipped with my computer for a while now (it is NOT a USB adapter; it seems built into the computer). However, I can't seem to get it working.HP says that the driver is Lite-On USB Wireless 802.11 b/g Adaptor. I am currently connecting to the internet with my netgear USB adapter (I think the driver is something like prism_usb)
I am new to linux. I just installed linux on my PC and wanted to configure wireless network connections. I have entered SSID and mode is set to infrastructure. I don't know what is BSSID do I need to enter MAC address (of router?)?I need to connect to internet wireless can you please guide me ?
I have a Air-CB21AG-A-k9 cisco Card and trying to run it with Ubuntu 11.04. But this card doesnt seems to be plug n play device with ubuntu 11.04. As soon I inserted the card both the leds are flickering but no wireless conectivity.
I'm running Lucid Alpha 1. Installed it about two weeks ago. Until a few days ago, the wireless networking was the best I've witnessed on any o.s. However, after last Wednesday's updates, connectivity now lags about 10-30 seconds whenever I open any web-page or access the repositories via aptitude. Granted after it gets going, it's fine. I noticed this same behavior in 9.10. I tested my XP connection and found no problems. .
I recently formatted an old Dell D600 and installed 9.10 on a single partition. It connects to my Airport just fine hardwired, but I have had no success getting the IntelPro/Wireless 2200BG card to talk wireless. I've entered the SSID and WPA2 security ID with no success.
I just installed Ubuntu 10.10. I was using iBall N 150M USB adapter for internet connection with Windows XP. Let me explain about the present Windows connection :
I am using an Outdoor CPE Wimax. For mobility purpose I have connected this wimax to one LAN port of ADSL+ WiFi router ( Beetel 450 TC1 ). This ADSL+wifi router reset to Factosy settings and enabled DHCP. With this setting , I am perfectly able to connect my laptop to Internet.
When I connect my USB adapter to Ubuntu , intially it detected the signal and asked for credentials. I gave the same and network established. But I am not able to browse the net. If I give [URL]..., its going to the ADSL+Wifi's diagnosis page. With Windows , [URL]... was going to the Wimax modem. After 2-3 trial and error , now Ubuntu also not able to connect to the wifi network.
Just recently I've been having strange connectivity problems with my wireless network. The connection has previously worked fine and haven't had any problems with it. I haven't installed anything that would have affect it as far as I know. how do I go about testing the network to see where the problem lies? I'm running Ubuntu 10.10 with a Netgear WG111v2 wireless adapter and my guess is it is some strange configuration problem or a rogue application is eating up packets because the system works fine when I boot it up into Windows.
When I try to ping my router I'll usually get something like 98% packet loss. However in the output below, the network sprang to life half way through my pings so it went up to 63%. What other tools can I try to find out what's going on?
alex@obsidian:~/dev $ ifconfig eth0 Link encap:Ethernet HWaddr 00:1a:4d:4e:03:3f UP BROADCAST MULTICAST MTU:1500 Metric:1
May I please have some help configuring wireless connectivity?I just moved and went from connecting to a LAN infrastructure to connecting with a wireless cable modem. The modem is dual-purpose, it has two ports, one for an Ethernet cable, and an access point for a wireless connection. The ISP is CableOne. My laptop, which I use most often, is wireless capable, and I want to use the wireless feature. The laptop is running Fedora 13 KDE, with a VirtualBox virtual drive running WinXP.
I have used NetworkManager to create a wireless connection and name it. I have also used WPA encryption for this because I don't want anybody else using my bandwidth. Moreover, I have tried no encryption and WEP, all to no avail.
As promised the finished (pretty much finished) wireless script can be downloaded here the wireless_script is a diagnostic tool for wireless issues. It will return all relevant information to help diagnose a wireless connectivity problem, return connectivity stats and attempt to fix common problems such as blocks. It comes in cli - wireless_script_1.2.sh or gui - wireless_script_zenity_1.2.sh'
Let me know any issues you have with it. My contact details are in the readme.txt (also the wireless results.txt generated by running the script includes code tags for forums - so please copy and paste the whole document when pasting on forums to enable this function)
I have an NFS client that loses connectivity with an NFS volume about once a week. The NFS client has several other volumes mounted to the same NFS server but this is the only volume that appears to have problems. It is mounted with these options: intr,rw,rsize=8192,wsize=8192
Before I start messing with the timeout options, what else could I look at to troubleshoot this?
The problem is I have a wireless Belkin router which I can connect to, but after being connected for a few minutes the net disappears (cuts from the router) and my laptop will have to reconnect again to the router for internet to work again. After a few minutes (or seconds in some cases) the connectivity loss will happen again over an over.
How to fix this problem or some things I can try, I've tried updating to two different firmwares, two different channels and resetting the router. The biggest problem I find is that this happens on both my laptop, another laptop in the house and also my tablet PC but doesn't happen on two other laptops in the house, I've also tested with windows 7 and Ubuntu with my laptop.
My laptop wireless card is Atheros AR9285 802.11b/g/n WiFi Adapter
I have just upgraded to 10.04 and can't get wireless connectivity because the STA driver for bcm4312 fails to activate. Does this sound familiar to anyone? I had had similar problems in 9.10 and tried to install bcmwl-kernel-source which apparently caused errors in the upgrade process. Not sure if this is part of the problem.
I have a server with two ethernet ports. I configured eth0 to be static, set at 10.1.10.148. I plugged in another router into the other ethernet port in order to configure that router. I configured eth1 to use dhcp. Using /etc/network/interfaces rather than gnome network manager. When I did this, I lost internet connectivity (internet routes through eth0 of course)
- Why did I lose internet connectivity?
In order to recover internet activity, I had to disconnect the new router on eth1 of course, and do sudo ifdown eth1. That wasn't enough however. After rebooting numerous times and pulling out my hair, I finally tried configuring eth0 as dhcp, rather than static, and this fixed the problem.
- Why didn't sudo ifdown eth1 solve the problem? What information was saved between reboots that somehow remembered that I plugged in the new router? Because my thinking was if /etc/network/interfaces was identical, and the network topology was identical, after a reboot everything should be restored, but it wasn't.
I use a laptop with a built-in WiFi card (Intel PRO/Wireless 3945ABG [Golan] using iwl3945 module). It's OK but sometimes is not very stable, occasionaly it simply dies and I have to reboot. It was even worse but I improved it by applying a new driver.I also have a very nice USB WiFi card (D-Link System DWA-140 802.11n Adapter [ralink rt2870]). It's much better and faster.
So the problem is that in Ubuntu 9.10 (2.6.31) I can use only the built-in one. The other one (D-Link) also works but I can't make it connect to my router. The built-in card connects to it but the D-Link even does not list it among possible connections (but it lists other possible connections which I do not want to use).The funny bit is that this problem disappears when I use an old Kernel (2.6.28-18 ) : both cards work fine and can connect to the router at the same time (obtaining different ip's). I then disable the built-in one and happily use the external card.
Unfortunately the old Kernel has issues with sound and video, so I would like to use the latest Kernel with the external card. I tried WICD but it didn't change anything.I can add that under the old Kernel the USB card is used as a ra0 device while the new Kernel lists it as wlan1.
I have an issue with my Dlink DWA 547 802.11n PCI adapter, I'm under LUCID fully updated.I have no trouble connecting to any wireless but after a few minutes I'm loosing the connectivity strenght (getting ping reply from my router that vary from 2ms to 200ms). But as soon as I'm rescanning the network using the command (sudo iwlist wlan0 scan) everything is fine (constant 1-2ms ping). I'm using wicd as network manager. I have tried to schedule a job in crontab to launch every 10min a network scan command, but didn't succeed to have it working, morehover I don't think that's the good way.
I can see the network shares, but when I click on one of them, I get the message:Unable to mount location (header)Failed to retrieve share list from server (body)This worked fine for me in the previous versions, so I don't know what to try.On the windows machine, the share can also be seen but not permitted to connect.
I've tried to set up an easy PXE server to set up ubuntu on various PC's via network. When I was finished I tried to boot a virtual mashine and later a normal notebook, both had the same problems, they find the TFTP server start booting and installing but it always fail. Reason: they get no IP from the DHCP-Server (I'm using dhcp3-server), even if I enter an IP manually I only get to the mirrow step where it tells me bad mirrow and the dhcp log says: Abandoning IP address 192.168.1.46: declined. I also rebootet the router but nothing changed.
I had my desktop running ubuntu 10.10 at my sisters house hooked up to a router sharing internet with her boyfriend never had a problem with it there. I moved into my own apartment this week plugged the cable modem directly into the broadcom ethernet card and couldn't get an ip or anything it wouldn't connect period so I ended up hooking it up usb which works but only at speeds of 5-7mbit when I have 15mbit connection. So I put another ethernet card in hoping it was just problem with the card and tried it that worked.
I got a connection but it was incredibly slow like getting maybe 5k a second so I open network tools in administration menu and start pinging google. While I'm waiting on a bandwidth test to complete and it takes off getting like 20mbit keeps that connection for a while then out of nowhere just drops to almost nothing. Again for a few minutes then falls off completely so I restart and it does the exact same thing starts off slow then something clicks and it works great for 5 min then nothing?
The goal: ipv6 connectivity using 6to4 The problem: no connectivity on some internal hosts (mixed win & debian) and no ipv6-web access on any host. Let's start with my external box. It is headless debian lenny dhcp/local-dns & cache/firewall. It has the following interfaces after a reboot:
My understanding is that ipv6 will auto-configure itself and that the radvd file is all that is needed by the external host to give all the ipv6 enabled internal hosts ipv6 web access. My question: How is my external host misconfigured? Or are the problems specific to the internal hosts? I am assuming that I have issues on both the external and internal hosts since some of the internals have golobal ipv6 address and some don't. I do however wish to address the external host first.
I am installing fc12 in a datacenter that does not yet support fc12. I have fc12 successfully running on several other machines in a different unmanaged datacenter. Here is my problem. After booting the machine I run a data transfer intensive operation. I use scp to transfer a 1GB file. After some percentage, 10 to 30, the network appears to go away. No ping, ssh, traceroute, etc are successful (in or out). At the KVM console I can check the status of the network service, it indicates its up. Restarting network, turning off iptables, ifdown/ifup do not have any effect. Only a system reboot will temporarily allow network connectionifconfig show LOTS of RX errors and dropped packets.
Machine 1) I have a Server with RHEL5. eth0 = 192.168.48.x (static class C ip connected to VLAN switch)
Internet available via HTTP proxy through vlan but from other main server but not from machine below.
Machine 2) I also have a Server with RHEL4. eth0 = 124.30.XXX.xxx (public IP for availing internet) eth1 = 192.168.60.xxx (class c ip to share internet via squid on the same LAB) eth2 = 192.168.16.xxx (class c ip connected to VLAN switch)
Now what I want is ssh connectivity available to Machine 1, so as to enable remote machines on the internet connected. I know that it might be hard for Machine 1 to share ssh directly on the internet but if there is any kind of tool or tricks to setup pls tell. So the only chance is ssh via machine 2 then after connected to Machine 2 then again ssh to Machine 1. But how do I make ssh available online? IPtables are set correctly machine 2 can't be ping on the internet.
I am working on a project to build an embedded board with WIFI connectivity. My present status:
- I have a embedded development board TS7200 .
- It has USB and Ethernet Port.
- I am able to get port Linux on it and run program to communicate between devices and a computer using socket programming and Ethernet.
I need help in deciding how to get WIFI connectivity to the board. I guess it would mostly be using WIFI dongle? Any suggestion for a WIFI dongle?How should I get it working? Where should I look for proper reading material? I am am planning to do some basic program practice using WIFI on my laptop. How can I do that ?
I have an iphone, I am trying to get internet connectivity to that phone through wifi. I dont have a wifi router. But i do have a laptop with wifi card. I am connecting to internet via cable modem. In win7 I used to create an accesspoint and do the ics from ethernet card to share via wifi card. It used to work perfectly.
Now as I am sing ubuntu, i want to do the same. I have intalled firestarter, and shared the internet connection through wifi card(wlan0).After this I created an accesspoint using the gnome network applet. Now i can connect my ifone to ths accesspoint. But there is no internet connectivity in my fone.
Trying to get the wired nic working so I can troubleshoot the wireless. I cannot get any kind of network activity. Been searching so I will post a little information that seems to be common with my situation.
lshw -C network
WARNING: you should run this program as super-user. *-network DISABLED description: Ethernet interface product: 82562EZ 10/100 Ethernet Controller vendor: Intel Corporation
I have a Fedora Linux machine and a Windows XP machine and I want to enable TCP/IP connection between them using a cross-over cable. I have a type of middleware server running on the linux machine and I want to be able to run the client for the application on the windows machine and work that way. I have heard Samba as a solution but my understanding is SAMBA is mainly for file sharing.. and is not necessary for establishing TCP/IP connectivity. Is this a correct statement? How can I go about setting up TCP/IP connectivity between the two machines?