Ubuntu Networking :: Wireless Network Disappears And Never Return?
Jan 24, 2010
the wireless connection works very well when i start using. but once, after my sister took hold of my computer for a moment. the wireless don't seem to work anymore. i asked her what she did but she says nothing. she may ot may not be lying but that doesn't matters. what matters is i cant reinstall back the wireless network.when i first formatted my notebook to ubuntu 8.0, i followed an online instruction to enable wifi to work. it works perfectly well. so when the problems occured, i tried using the same instruction but it doesn't work anymore.
the wireless network does not appears under connection anymore.
Out of the blue a dialog popped up requesting that I enter the key for my home wireless network. This is of course unexpected since the correct key is defined for that network in my network config. I entered the correct key but it was rejected. I then clicked on the network manager icon in the task bar. Contrary to normal behavior this did not show either my home network or any of the other wireless networks from my neighbors. The only resolution I could find to restore the wireless network was restarting my system. This seems excessive.
The problem in a sentence: a F10 machine seems to disappear from the network after running for a couple of days, however, the network is accessible from the machine itself. My setup: A router with two machines connected via ethernet. Both are essentially desktop computers, one is a standard machine that is booted every day (let's call it Desktop) and the other runs continuously, having only a keyboard attached (let's call it Server).
After running for a few days, Server becomes inaccessible from Desktop. It doesn't respond to ping, ssh fails etc. Even the router shows that Server is disconnected from the network. There is a ping running in Server that pings a machine in the internet with an interval of 60 seconds, the output is directed to a file. The file shows no failed pings, it even succeeds when the router shows that Server is disconnected.
The most peculiar thing: a random keyboard event (e.g. pressing Shift) will make Server reappear. I don't have to do anything else, just press Shift on Server's keyboard and a few moments later everything is back to normal. The router shows that Server is connected and I'm able to do ssh to Server.
The wireless connected hosts do not respond to pings from wired ones or other wireless ones. And all the wired connected hosts respond to pings from any wireless one. The same problem applies also to ssh connections exactly as in the ping issue.
The switch the ADSL modem/router and the Access point are all 3 different machines correctly connected to each other. I do not have a firewall in any of my hosts, all run Slackware 13.1, the wireless ones use "wext" driver and not "ndiswrapper". All wireless hosts login successfully, WPA & DHCP works fine and internet connection goes without a problem. But the fact I can only connect from a wireless host to a wired one is puzzling.
On about 90% of bootups I find that network manager has disappeared from the notification area to be replaced by a random duplicate of one of the other icons (at random). If I remove the notification area and add it again all is fine.
I recently reformatted and dual partitioned to both Windows 7 as well as ubuntu 10.10. Loading works fine and Windows 7 is 100% operational. I cannot seem to get my wireless network adapter to be read by Ubuntus 'Windows Wireless Drivers' gui. Here are the steps that I have done THUS far, to make sure that we are all on the right path. Before I go any further, my wireless network adapter is an old school WUSB11 Linksys Wireless Network Adapter (running version 2.6).
1) Downloaded and installed "ndiswrapper" from ubuntu's main website. I downloaded the common, utils and ndisgtk files and installed them accordingly. 2) I extracted these three files to the desktop of Ubuntu and accessed the terminal page. 3) From terminal I typed "cd Desktop" to change the directory to the desktop. 4) Next, I typed in "Sudo dpkg -i ndiswrapper-common_1.54-2ubuntu1_all.deb Sudo dpkg -i ndiswrapper-utils-1.9_1.54-2ubuntu1_i386.deb Sudo dpkg -i ndisgtk_0.8.5-1_i386.deb" 5) This installed Windows Wireless Drivers gui successfully and I can access it. 6) I have downloaded the driver files for the adapter from the cisco website and searched them for the required files needed. 7) After extracting the .INF file from the "Drivers" directory named "NETUSB.SYS" (I wasn't sure if the other associated files within the same folder needed to be present together with NETUSB so I moved everything to the desktop) I typed in "sudo ndiswrapper -i NETUSB.inf". After accessing the Windows Wireless Drivers gui I have noticed that the 'netusb' driver is present yet under it, the system states "Hardware present: No". This leads me to believe that maybe I installed incorrectly or my "fireware?" is not present? I was reading through the installation guide posted on the ubuntu website that in addition to the .INF file we also need the BIN file(s)? and SYS file(s)?.. The folder with the drivers for my adapter contains a BIN file but it is not within the "Drivers" section of the folder. 9) Upon mousing over the network Icon naturally my hardware is still not present. 10) From what I gather after the system finds the hardware I am to write into the terminal
The problem with my wireless network. I have Dell DV6 Pavilion 2115 eg laptop and i installed Ubuntu 11.4 and internet and wireless worked, until i reboted my system it has disapear. I cant no longer to connect to a wireless network. It dont shows me any wireless network. My wireless card is Atheros AR 9285 802.11b/g/n Wifi Adapter
The Short VersionTwo Vista machines connected to a 2Wire wireless router (AT&T UVerse) via DHCP.One (headless) Ubuntu 9.10 Server machine connected (tried both wireless and wired at different times) to the same 2Wire router via a static IP.Samba is installed on the Ubuntu Server.Vista computers connect perfectly to Ubuntu Server.Various file transfers/communications ensue.Ubuntu Server 'disappears' from network.Sometimes after a couple of minutes.Sometimes longer.Cannot ping server.Cannot SSH into server.It's just 'gone'. Reboot server. Everything's fine (can ping, find, connect, etc.) until (some minutes later) server 'disappears' again.
The Long Version
Network Configuration
Code: |---------------------| | Vista Machine #1 | | 192.168.1.70 (DHCP) | |---------------------|[code]..... The Question: Why won't my damned Ubuntu server just stay connected to the network?
I have a Belkin Enhanced Wireless USB Network Adapter Model # F6D4050 v2. The drivers are for windows but the windows wireless drivers app doesnt work. I see a tutorial for a linksys that appears to have the same chipset, but I am not sure if any of the steps need to be modified, also my kernel is a bit different. Here is my kernel:
I am a Windows refugee who discovered Ubuntu as a way to save my files from my virus-ravaged computer. Had no installation discs for Windows, so when I had to wipe my hard drive and start over, I decided to give Ubuntu a try. I've had mixed success, but that's another post...
Right now, the problem is that I installed 10.10 two weeks ago and was able to connect to the Internet with no problems - until yesterday. Suddenly, our wireless network (the only one in the vicinity) does not come up as available in Network Manager. In fact, the entire wireless option disappeared. I know there are many posts and threads on here about this, but weeding through them trying to find an answer is more frustrating than actually dealing with the problem. I know the router works because I can post on this forum from the Macbook. I really like Ubuntu and would like to keep using it, but not being able to connect to the Internet now on top of the other issues I've had is making me doubt I want to continue down this Linux road.
P.S. When I attempted an analysis through System Testing, it said something about there being no proprietary drivers?
my wireless home network is not recognized by my network card (RealTek RTL8190 mini PCI). The post was as follows: "I am using a new computer with Windows 7 , Athlon quad core 2.60 64 bit, 8GB RAM. Internet conection works fine with ethernet but ubuntu does not see my wireless network. card (RealTek RTL 8190 ID: 10ec:8190). Have searched this forum but unable to come up with a fix. I was looking for windows XP drivers to use Ndiswrapper but could not find a list of .inf files. My network is OK and works perfectly in windows and with my 2 laptops. Can anyone point me in the right direction? Additional info: install was done within Windows using WUBI to a separate partition on my HDD. I am new to this and thouroughly confused as to the procedure for installing the drivers if they are in fact available."
I am very frustrated in that I would like to use Ubuntu 10.04 but it is useless without internet connectability. I am new to linux and do not understand where to get the appropriate drivers or how to install them. I wish someone would answer this post and either give me a clue what to do or just say "give up" and uninstall ubunutu.
I am on Ubuntu 10.04. I had a network printer added, but suddenly now the printer seems to have disappeared. What's more, System->Administration->Printing doesn't allow me to add a new printer.The System->Admin.->Printing troubleshoot said the following:
"The CUPS print spooler does not appear to be running. To correct this, choose System->Administration->Services from the main menu and look for 'cups'". System->Admin.->Services does not exist. Searching on the net led me to believe that /etc/init.d/cups start would start cups for me, but that does not seem to be happening.
I am having a little trouble connecting to my wireless network. Running Fedora 10 32 bit.I'm trying to connect to a hidden wireless network. I updated the firmware for my driver but apparantly the driver is still not working. Broadcom has a driver from their website for Linux 32 bit systems. Should I attempt to install it? I read a post where the driver is built into the system kernel. If so I would need to blacklist the one of the drivers. Correct?
[justin@justin ~]$ iwlist scan lo Interface doesn't support scanning. eth0 Interface doesn't support scanning. wmaster0 Interface doesn't support scanning. code....
I've been having issues with my ubuntu server (10.04 LTS) lately. Every once in a while, anywhere from 3 days to a month or more, the server will just disappear from the network. All manner of trying to reach it from the outside fails, even from the LAN. Since it's headless, this is kind of problematic. After a hard power down or reboot, the server will always come back online, but this is very annoying for a remotely administered server.
What should I look for when trying to determine why the server keeps going offline? I can't tell if there are any other issues like a hard lockup or anything, just that it is not on the network anymore when this happens.
I have just installed Ubuntu 10.10 64bit on my laptop Toshiba Satellite A665-S6065 and I can connect to wired network but I can not connect to wireless network "Network Connections disconnected". Im following this post http://ubuntuforums.org/showthread.php?p=6183681
1. Machine Brand and Model (PC/Laptop): Toshiba Satellite A665-S6065 2. Wireless Brand, Model and Wireless Chipset:
I am running Ubuntu 9.04 as a partition with windows 7 on a acer aspire 5742, I would like to connect to the internet in Ubuntu, wirelessly, but I am unable to turn my wireless on in Ubuntu, and network manager says "no network connections available". I have the following network adapters:
After having installed ubuntu 11.04 my laptop's wireless device (realtek rtl8192se on a packard bell laptop) disappears on ubuntu 11.04. Before, with ubuntu 10.10, I had no problems. Now, when I start ubuntu 11.04, sometimes the wireless card work, but most of times it doesn't: the wireless led is off, and with the lspci command I got no line about wireless card. If I restart the laptop and I start win7, the wireless card doesn't work there too! only after many reboots and/or shutdowns wireless card appears again.
I just installed ubuntu 9.10 and completely reformated my dell laptop.fter that my computer was cleared and I can't use my built in wireless card. Now I have to just connect my laptop with a wire to access the internet. Is there any wireless network cards that I can buy, (like on amazon.com) that will allow me to go wireless
I only just installed Ubuntu 11.04 dual booted with Windows 7 which I have been using all this while. On Windows 7, I use a protected wireless network. I also have access to a wired network. Both the wireless and wired network work perfectly on 7.
During the installation of Ubuntu, it asked me to connect to a wireless network, which I could without issue.
However, once Ubuntu 11.04 completed installation, its no longer able to detect the wireless network! It's not even connecting to my wired network.
i was using windows xp..now i partitioned my hp mini and started using ubandu...yeah i have to say its much faster and looks clean...but i am not able to usefi..when i tried searching networks,,i am not able to find any.but at the same time i am able to use wifi from the same net book via windows xp,
I've got a Zotac MAG HD-ND01 with XBMC live installed. This is built on Karmic Koala and runs very nicely through the wired NIC.
I configure the box using a cable. I'm using WPA2-PSK and it is clearly authenticating OK.. It gets an IP address.. the AP shows a connection to the box. My XP laptop connects to the access point OK.. just can't connect to the box via the wireless, and it can't see the network using wireless.
I have followed a number of threads on connecting Atheros 9XXX wireless [URL] but no joy.
Also, can Ubuntu connect to the AP at any speed greater than 54MB? My windows PC connects at 144MB+ . Will ndiswrappers connect at those sorts of speeds?
lspci -nn 04:00.0 Network controller [0280]: Atheros Communications Inc. AR9285 Wireless Network Adapter (PCI-Express) [168c:002b] (rev 01) iwconfig lo no wireless extensions.
On my laptop HP presario, I installed Ubuntu 9.10 (Wubi). My Windows Vista connection works fine, but the Ubuntu cannot find my wireless network. My network card is the Belkin Wireless N (F5D8233-4v3). Do I have to use the ndis. On my desktop here, (wired) Ubuntu found my card without me having to do anything. What should I do. (unistall ubuntu and make do with Vista?)
Hi - I am new to Linux and Ubuntu so I have no idea how to fix or problem solve unfortunately I installed Ubuntu 9.10 from scratch recently on this laptop and all was good. I connected to my WIFI network no problem. It's WPA PSK encrypted, DHCP enabled. I just set it up in Network Manager and it was all fine. Then after a few days I installed a printer and some packages and updates via synaptics. The network connection started dropping after 20 mins or so. Only a reboot would restore it - auto connects at first, runs fine till it drops then never will reconnect. I posted on here, someone gave me some lines to put in a config file. I tried that. I didn't seem to help much, problem remained. Yesterday I checked for updates and there were a whole bunch so I just installed them all. Now I cannot connect at all. I have deleted and recreated the connection in Network Manager but it doesn't help. It tries to establish a connection but never achieves it. I am connecting to the internet now on the same laptop booted into Windows, so all the hardware is fine.
Can anyone who knows about ubuntu networking help? Do I need to do a complete reinstall? Seems a bit much, but it worked when I initially installed the OS. I want to like Ubuntu, but something as basic as connecting to the internet is pretty vital so reluctantly having to start using Windows again...
I have installed the driver for my usb network adapterIt sees my adapter fineI see my two routers .....i have both a dsl routher and a router conntected to my cable modem ...it says signal strength of 90I see my neighbors network as well but when i try to connect to either of my routhersit will not let mei use WEB ... 128 bit..it asks for the passpharseit says it is activating....and the after a few minutes the same window back up againi know my pass phrase is correctwhen i reboot in windows ...everything works fine ...no problembut in 10.04 i can not connect to any networkwhat am i doing wrongI re entered my pass phrase a 100 times
I upgraded from Ubuntu 9.10 to 10.04 this morning, and I can't connect to my wireless network. The Network Manager shows it's there, with the correct SSID and security key and everything, yet it still won't connect. I'm using a D-Link DI-524 Wireless Router that I've never had any problem with before.
Another Ubuntu install, another round of wireless problems. I have a Dell Inspiron 530 Desktop that I used Wubi to install Ubuntu 10.4 on alongside Windows 7 Ultimate. Everything installed perfectly but it's not detecting my wireless network so I therefore have no wireless access. My wireless network icon is gray with a red "!" on it; when I click it I get:
My wireless network does not show up at all; it's not hidden. When I try to enter it manually, I do so and when I click it I immediately get a popup that says
Wireless network Disconnected - you are now offline.
I only have a wireless connection since the router is in another part of the house, and this is really frustrating me that this stuff doesn't just work on install like OSX and Windows does.
I want to setup a wireless network in my lab. Main reason is that I want to be able to print from every computer, but it would also be nice if we can share files. I have three 64 bit machines, a netbook and 32 bit notebook and my internet goes via an Wifi router to which other Windoooze machines connect. I want to change to Lucy now and hope it is easier to setup the network in clean manner.
