Ubuntu Networking :: BCM43xx Wifi Connection Randomly Disconnected In 9.10
Jan 25, 2010
I have an Asus laptop with a BCM4318 wifi chipset. result of lspsci command about wifi cards:
Code:
00:09.0 Network controller: Broadcom Corporation BCM4318 [AirForce One 54g] 802.11g Wireless LAN Controller (rev 02) For some reason, I often get disconnected. Once it's disconnected, I cannot connect anymore and I need to reboot my laptop in order to get the connection back! I didn't have this problem when I was on Ubuntu 8.04. I checked in /var/log/syslog and I found this when the network is disconnected:
[Code].....
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Dec 8, 2010
I have installed XUbuntu 10.04 but cannot connect to WiFi. Here is what I know so far:
Hardware and Software configuration:
Compaq Presario 2100US
XUbuntu 10.04 (installed Dec. 2010 from Live CD dated Oct. 2010)
Kernel 2.6.32-21-generic
Gnome 2.30
RAM Memory: 938.7 MiB
Processor: Celeron
Disk Space Avail 23.2 GiB
Wireless Card: MSI Wireless 11G CardBus CB54G2
*MSI Driver rt2500pci located in system (see below)
No wifi 'on' 'off' hardware switch on machine
Prior to the install of Xunbuntu 10.04 (Lucid Lynx) the machine carried MSXP. The wireless card came with the machine. The machine used a cable connection by previous owner. Connection's been working fine in Ubuntu Jaunty Jackelope and Puppy Linux. Wireless card appears to be functioning. The system scans for the network, shows that connection is established by both icon in tray and message saying that a connection is made. The card shows both green lights active. The light that indicates a connection is on and randomly flickers. Tested Firefox for connection. Firefox is not receiving anything from the system. I have got the network manager functioning enough to say that I have a 'connection' but still cannot connect to server.
Network Connections
wireless: linksys - mode ad hoc - MTU auto
wireless: security - none (I borrow from a neighbor's wifi)
IPv4: auto(DHCP)
IPv6: Ignore
*Driver rt2500pci located in /sys/module/rt2500pci/drivers/
(There is a 'config' file in this directory)
Help menu in 10.04 is listed as help menu for 9.04 so don't know if applicable to 10.04 debugging. When 'troubleshooting' wireless connections, I did a *sudo lshw -C network* command on terminal. The results *do not* show 'Claimed, Unclaimed, Enabled or Disabled as help menu indicates. The line that would show that information (*-network) doesn't have 'Claimed, Unclaimed, Enabled or Disabled'. I can send image of this query. I have tried two other wifi cards with similar results, no connection.
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Jan 23, 2011
I'm running Maverick Meerkat Ubuntu and I'm trying to figure out how to disable this bcm43xx wifi driver, or something like that. Personally, I have no clue what this is, but someone said that after you install NDISwrapper and its components, you have to disable bcm43xx driver, otherwise the two will conflict.
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May 16, 2011
The wireless connection gets disconnected and when I try to reconnect it, it is not possible, the wireless icon keeps blinking and last for ever and never gets connected again, the only solution is to restart the computer. do I need to do a specific task to stop this error? operating system ubuntu 10.10, I have a hp pavilion dv600, i recently had some issues with the wireless driver, now I have it and it works fine but now the problem is that the wireless connection gets diconnected and when trying to reconect it, well it is not possible. please advise.
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Sep 27, 2010
i have dell latitude d830. has anyone else had this problem? it drops and reconnects every 10 minutes or so.
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Apr 18, 2011
Im using Ubuntu netbook remix on my wife's hp mini. Ever since I switched my router out this netbook will connect to my wireless network, then show a disconnected icon, yet the internet still seems to work. I've searched around and seen that other people have had this issue but I haven't seen anything on how to resolve it.
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Dec 29, 2010
I tuned on my netbook and my wireless signal had a red exclamation.
Wireless is enabled.
Wireless Networks shows disconnected
I don't get it. Can't seem to get it to connect? How? If I open the connection information I can see the wifi networks around me. And edit/add/delete. But when I go back to the signal and click. it just shows wireless network disconnected and no option to connect. What to do? I have restarted the computer, router, cable modem, etc. Done the updates.
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Oct 19, 2009
Wifi getting disconnected very frequently in Fedora 10. I am facing issues in my Toshiba satellite laptop, after a fresh install of fedora - 10. After the install, The wi fi connection is dropping off very often, and even on keeping wpa_supplicant and wifiroamd in "active" state, the connectivity needs to be established manually.
[root@dipan dipan]# rpm -qa | grep -e kernel -e kmod | sort
kernel-2.6.27.5-117.fc10.i686
kernel-firmware-2.6.27.5-117.fc10.noarch
kerneloops-0.12-1.fc10.i386 .....
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Jun 15, 2011
i am using broadcom wireless (4312) on my laptop with FC15 and configured it using [URL]. initially it ran great without any problem (for a week). but from yesterday, every 15 minutes or so, my wifi started getting disconnected, showing the wireless login screen . I can reconnect only by rebooting or restarting network manager service.
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Feb 16, 2010
Since I have started to use Ubuntu 9.10, I have had multiple wireless connection troubles. First of all, it says the signal is 2 bars, when in fact my router is right next to me as of right now. Second of all, when I try to connect to it, it asks for my password 3 times, then says disconnected. I'm on a hardwire right now, it's across my keyboard, and I'm in a tangled mess.
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Jan 22, 2011
My promlem is that I wrote a few simple script to monitor the network connection as follows:
script 1 "netmonitor.sh"
#!/bin/bash
# /usr/local/bin/netmonitor.sh
HOST=www.google.hu
ping -c 1 "$HOST" > /dev/null 2>&1 .....
So it's run every 5 minutes, and it works well, when it sees host is down, it restart the connection, BUT as the log shows below, about a half an hour after using the connection (for example the ssh through the internet or the vpn clients disconnected) , br0 (probably) goes down or something and the script needs always restarting the connection...
The log:
Fri Jan 21 14:45:01 CET 2011 Network is ready! .....
Fri Jan 21 15:55:41 CET 2011 Network seems down, rechecking...
Fri Jan 21 15:56:21 CET 2011 Network is down, restarting interface br0!
Fri Jan 21 15:56:48 CET 2011 Network is ready after interface br0 restart! .....
Then if I use again, its ready... Is it possible, that if system don't use the connection after getting the DHCP lease, it close the connection automaticly? Anyway it works ok, but I don't want to owerwrite my router's flash in every 5 seconds with te new lease, my script probably defeat it soon if I don't do anything.
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May 4, 2010
My laptop has squeeze and custom 2.6.34-rc5 kernel. This kernel is there from April 20 onwards. Today I am seeing random connect/disconnect of my usb keyboard. In the last 2 hours it got disconnected at least around 10-12 times.
[ 3136.872084] usb 2-1: USB disconnect, address 51
[ 3137.184066] hub 1-0:1.0: unable to enumerate USB device on port 1
[ 3137.712085] usb 2-1: new low speed USB device using uhci_hcd and address 52
[ 3137.888161] usb 2-1: New USB device found, idVendor=0603, idProduct=00f2
[ 3137.888172] usb 2-1: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[ 3137.888181] usb 2-1: Product: USB Keyboard
[ 3137.888188] usb 2-1: Manufacturer: NOVATEK
[ 3137.907637] input: NOVATEK USB Keyboard as /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1:1.0/input/input87
[ 3137.908369] generic-usb 0003:0603:00F2.0050: input,hidraw0: USB HID v1.10 Keyboard [NOVATEK USB Keyboard] on usb-0000:00:1d.0-1/input0
[ 3137.945505] input: NOVATEK USB Keyboard as /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1:1.1/input/input88
[ 3137.946956] generic-usb 0003:0603:00F2.0051: input,hiddev0,hidraw1: USB HID v1.10 Device [NOVATEK USB Keyboard] on usb-0000:00:1d.0-1/input1
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Aug 8, 2010
I have installed Fedora 13 and updated it. I simply cant use ssh to connect to this Fedora, not even locally. I have enabled port22 in firewall settings and nothing. Tried to disable firewall completely and nothing. I have disabled SELinux (not sure if it has something to do with this, but... ) and nothing. Entered "ALL: ALL" in /etc/hosts.allow and still nothing. Dont know what to do anymore.
Here is what happens when I try to ssh to this machine, even from it:
[flibio@surf ~]$ ssh localhost
warning: Need basic cursor movement capability, using vt100
flibio's password:
Authentication successful.
Disconnected; connection lost (Connection closed.).
Connection to localhost closed.
[flibio@surf ~]$
Looking into Services > sshd and it says "This service is dead."
So I tried:
[root@surf etc]# service sshd restart
Stopping sshd: [FAILED]
Starting sshd: : OpenSSH_5.4p1 on
: FATAL: Creating listener failed: port 22 probably already in use! .....
And still I get disconnected whenever I try to ssh to this machine from anywhere. Services says that sshd is allways dead, even restarting it but I can only restart it by doing a pkill sshd before.
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Apr 19, 2010
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.
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Jan 28, 2011
OS: Maverick Ethernet driver: tested with sky2 an sk98lin This has been driving me crazy for the last few months: if I unplug ethernet cable while my laptop is on reconnecting it sometimes does not bring the connection back.
And once ethernet is gone nothing that I try seems to consistently bring it back. Rebooting, disabling/enabling the driver, disabling/enabling NIC in BIOS, changing driver from sky2 to sk98lin, deleting connection from Network Manager, resetting the router - nothing helps. It seems to come back randomly a few weeks later. Once I used live Ubuntu on a USB stick and ethernet came back not only on a live distro but then when I rebooted also on my main OS. But when I tried that trick next time ethernet was missing in the live distro as well.
Also once I was able to revive ethernet but compiling sk98lin driver, blacklisting sky2 and rebooting. Of course next time doing the same routine did not help. The thing is - ethernet works fine with either sky2 or sk98lin and I can unplug the cable and plug it back in most of the time without any issues. But then every so often - bang and I'm stuck with only wireless until ethernet suddenly starts working again.
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Feb 9, 2011
This is not the common problem that's on the stickied thread. I'm able to connect to my wireless network perfectly. I switch between Windows to game and Linux for desktop, coding, and hosting, so I can tell it has something to do with ubuntu 10.10. When I'm connected to my wireless network, at random times, my internet begins to slowdown, then I get disconnected from the internet, but the taskbar says I'm connected. This problem only happens in ubuntu and not Windows for some strange reason.
The applications that are usually open do not cause it, because it still does it even though I have little applications open (Google Chrome, gedit). When I'm on Teamspeak 3, I notice my ping rises to the 1000s randomly, and I get disconnected. Once again that only happens on Ubuntu.
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Apr 8, 2010
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...)
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Jul 26, 2010
my netbook shares it's wireless connection to my desktop. i've done this through the gui (edit connections > eth0 > ipv4 settings > shared to others) and it has worked for the last i don't know how many months.recently it had become a bit touchy with regards to how it was set up. it didn't work unless the netbook was already booted and wired in at the time of booting the desktop.now however it's gotten even worse and all i get when i connect them together is
"connection established" *pause* "disconnected" *pause* "connection established" *pause* "disconnected" *pause* "connection established" *pause* "disconnected" *pause* "connection established" *pause* "disconnected" *pause* "connection established" *pause* "disconnected" *pause* "connection established" *pause* "disconnected" *pause* "connection established" *pause* "disconnected" *pause* "connection established" *pause* "disconnected" and so on.
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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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Jun 5, 2010
I could not find a solution to this problem anywhere. I use a ubuntu server to play (stream) mp3s and movies to other computers on my network. It works most of the time, but sometimes in the middle of a movie or a song it will drop/hiccup--saying it is "not reachable". I am not overtasking the server at all, and merely playing an mp3 that takes up less than 10% of the bandwidth, yet it drops it for a split second.
I have a WRT160N router (DD-WRT of course) with 4 clients connected (2 of which are wired). The ubuntu server is connected via ethernet and all machines have the same issue. It can't be the router because another Windows machine works just fine for streaming these files. I just can't understand how it can lose connection for a second or so. It may just be the file-system or some service that is hiccuping, but I have no idea...
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Aug 18, 2010
I do randomly (as far as I know) loose my wireless network connection. The only thing to do then is to restart my router and after that it works for a while. I know this is not a hardware issue because I don't have this problem with KDE, only in gnome. I think this problem occurred after I started using 10.04, but then I changed to KDE and forgot about it. But now I'm using gnome again and loosing my network connection over and over drives me mad
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Nov 20, 2010
My internet connection drops randomly in ubuntu but works fine in XP.The connection is not disconnected but i cant browse any sites,so what i do is i will reboot my system so that i can surf again but after few minutes the same problem is happening again
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Nov 30, 2010
I am running the newest version of Ubuntu on my laptop. The connection randomly seems to massively slow down. After a speed test is run it registers at .05 download and Ubuntu crashes before it gets to upload. I reboot from the crash and it runs fine for a while, then it suddenly does the same thing. The connection is running fine on my Windows 7 desktop, I don't know what is going on. In transmission the upload speeds are running at ~100kbps though. If I try downloading a mere 400kb .torrent file it stops half way through, usually at 200-300kb done, downloading at 1.2kbps the entire time. This is getting very frustrating and I really don't want to go back to Windows.
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Feb 6, 2010
My ubuntu karma desktop is plugged into a wired connection that goes through a router and into my cable modem.Everything was working fine like it had been foseveral months yesterday morningSomething happened by the end of the day that has screwed up my wired networking. I plugged my laptop into the same cable thats plugged into my ubuntu, and the cat5 cable is live. Also when I plug said cable into the ubuntu box, the ethernet lights come on, or atleast a solid green one. Meanwhile the network connections Icon continues to have a red X and a tooltip saying "No network connection".
Under network settings, there is only one wired network "Auto eth0", but it says "last used: never" which is strange since I've been using this for months. When I click edit the main settings are MTU automatic, ipv4 automatic DHCP, and ipv6 ignore.hat could the problem be? By chance did a karma update get released that broke the networking
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Sep 1, 2010
The title pretty much says it all. My eth0 will disconnect at random intervals. lspci:
Code:
...
01:08.0 Ethernet controller: ADMtek NC100 Network Everywhere Fast Ethernet 10/100 (rev 11)
...
And lsmod | grep tulip:
Code:
tulip 50592 0
Ubuntu 10.04 Linux desktop 2.6.32-24-generic #42-Ubuntu SMP Fri Aug 20 14:21:58 UTC 2010 x86_64 GNU/Linux
When it disconnects, it easily reconnects when I disable/enable networking. But until I do.... Update: It disconnected again right after I posted this. Here is what dmesg | grep tulip:
[Code]....
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Jun 30, 2011
Since I installed Ubuntu I've had this problem that makes me loose connection to the Internet. The wireless-icon on the panel starts loading, and after like 5 minutes, it works again.I had this problem when I had Mint 11, but it happened more often.Anyone know how to fix? Edit:Network: Card-1 Atheros AR9285 Wireless Network Adapter (PCI-Express) driver ath9k Card-2 Marvell 88E8040 PCI-E Fast Ethernet Controller driver sky2
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Sep 1, 2011
I have a problem with my wireless connection in ubuntu (natty with amd64bit) There seems to be intermittent disruption in my connection. Havent seen a pattern as yet, though it happens once a day. After that I cant get it to work at all and only restarting + reconnecting the USB device helps. Dont know what is going on.I have already read these pages : Commands and Wireless Troubleshooting.Here is my line of though1) Given that I am able to connect other devices to it while I am not able to connect through this desktop, I think the router is OK.2) I am able to work with it after restart + re-connection . And so the driver is OK and is loaded. The driver seems to be oK and loaded even while I am not able to connect.So why is this happening and how can I get this under control without having to reboot and re-connect the device everytime.Here are the output for the commands which will give you a more detailed idea of the process. Before reboot while I was not able to connect:
Code:
Script started on Tue 23 Aug 2011 01:40:08 PM CDT
raja@UshRaj: ~raja@UshRaj:~$ sudo nm-tool
[code]....
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Feb 20, 2011
Hey all, I have got this strange problem with my Slackware server acting as router and gateway to my internal network. It randomly disconnects the WAN connection after X days ( it is between 2-7 days ). This error messages occured in /var/log/messages just before it lost its WAN connection:
Feb 20 14:36:00 tml dhcpcd: eth1: failed to renew, attempting to rebind
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May 2, 2010
Since I upgrade to Ubuntu 10.04 my wireless connection is very unstable. I install the needed wireless drivers from 'Hardware Drivers' (Broadcom STA wireless driver) and I got wireless connection, but it randomly disconnect, and also connection is very slow.
I think that the problem are the drivers which are not very compatible with this version of Ubuntu, which means we need to wait for update? I have HP ProBook 4510s laptop, Intel PRO/Wireless 5100 AGN network card & Gembird NSW-R2 router. I'm only having this problem on Ubuntu 10.04, on other OS's the internet is fine.
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Apr 18, 2010
If the wifi network gets disconnected why is the wireless authentication key needed again and again...cant ubuntu store and retrieve it...
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