Server :: Ubuntu Karmic 9.10 With Lamp Frequently Drops Connection?
Mar 17, 2010
I am far too often getting connections dropped when trying to load web pages from my local server. From my mac running Safari I get the error message "Safari can't open the page...because the server unexpectedly dropped the connection." From Firefox on my Ubuntu 0.10 desktop it opens the window that says "You have chosen to open index.php..." and ask if I should edit the file or save it. When I tail the apache2 access.log it shows the previous successful page load but the one that failed is not mentioned. In error.log I get some stuff I don't understand, except the last line which says aborted:
b7819000-b781b000 rw-p 00000000 00:00 0
b781b000-b781c000 r-xp 00000000 00:00 0 [vdso]
b781c000-b7837000 r-xp 00000000 08:01 1444383 /lib/ld-2.10.1.so
b7837000-b7838000 r--p 0001a000 08:01 1444383 /lib/ld-2.10.1.so
[code]....
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May 28, 2010
I'm having issues with my wired network. After about 5-10 minutes of turning on my machine, the network will drop out. Sometimes rebooting my pc or router will fix the connection, other times it will have no effect. Also, sometimes the connection will completely disconnect, other times it will appear to be connected (i.e. the network icon will indicate that there is a connection), but trying to ping a remote server or the router will fail.
This problem first showed up on Fedora 11 64, however I've just installed Fedora 13 64 and that hasn't helped. I'm using a brand new NIC (I've tried using the onboard NICs). The machine also has Windows 7 installed, which is able to connect just fine. Apart from changing NICs, the only other thing I've tried is switching from dhcp to a static IP address.
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Feb 11, 2011
I'm using Kubuntu 10.04.2 LTS on a Bangho laptop. Kernel 2.6.32-28-generic i686. My card is: Realtek Semiconductor Corp. RTL8187B Wireless 802.11g 54Mbps Network Adapter iwconfig wlan0 gives me:
Code:
wlan0 IEEE 802.11bg ESSID:"Default_WLAN"
Mode:Managed Frequency:2.442 GHz Access Point: 00:06:4F:8D:B9:AF
Bit Rate=1 Mb/s Tx-Power=20 dBm
Retry long limit:7 RTS thr: off Fragment thr: off
[Code]...
Usually when this happens, for 10 or 20 seconds it appears to be connected (i.e. the heart symbol is there) but I can't ping google or my router, then it "realizes" it's disconnected. It takes one or two attempts to reconnect successfully by pressing the "active" button. Meanwhile throughout the disconnections and re-connections the signal is very strong (98%).
I had the same problem with my old access point, at first I thought it was the cheap/old hardware, so now I bought an "ENCORE ENDSL-A2+WIGX2 | ADSL 2+ Modem with 4 Port Wireless Router". The problem persists only with a stronger signal.
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Jan 23, 2010
I got a new low power file server (Atom 330 with ion), but didn't enjoy it since.
I installed Ubuntu server 9.10 64bit.
I randomly experience connection drops. As I'm installing and testing, there are lots of ssh windows open, I transfer much data using scp from my laptop to the server (all connected to wired lan).
Connection drops are as follows: ssh windows terminate with "connection reset by peer", but not always all the ssh windows terminate. For example, I edited a mediatomb config using nano, that stayed open even with scp and all other ssh windows cut.
I also have apache2 installed because I'm running urd (a usenet download tool). It seems that when I start the deamon, connection drops. So I killed apache2 to try out but that didn't solve the problem.
I left ping run all the time, and the server is pinging back all the time, which is really strange as I thought that a connection drop means the whole network interface going down.
When this drop occurs, I have to wait 2 minutes until I can ssh back into the server.
I also installed mediatomb, but it isn't really fun to stream a video to my ps3 as it always hangs after 5 to 10 minutes.
Code:
lspci:
Code:
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Apr 7, 2010
In order to get my shares working I first have to connect to the windows shares from the Ubuntu machine. Then I can connect to the Samba shares from the windows machine. If I don't continue to use the shares. It'll drop the connection and I have to unmount the windows shares and start the process over. The wireless network still shows as being connected but I get an error on the windows machine if I try to connect. I've Googled this and it appears to be a Windows problem. I know this is a ubuntu forum but thought I'd ask for any info. I believe that this is also what is giving me shared printer issues as well.
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Jul 21, 2010
I'm having a web server running with ssl version 0.9.8 on Ubuntu 8.0.4. Server is having a valid certificate issued by authorized CA. In the begining client and server able to communicate (beyond handshake) successfully. However, after a couple of days all of the active connections go haywire.
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Dec 30, 2010
I have a server running Ubuntu 10.04. I use it for mysql as well as samba file sharing across 10 computers. It had been working out great. I only ever needed to restart after I would install updates and to sort of thing. Starting this week however, it has started kicking all the computers off of both mysql and the samba shares every few minutes. It is very strange. The mysql connection can be restored just by closing the database and reopening it. The file shares are only a problem if you try to access them though a program other than your file browser (e.g. save a file you are working on in word to the server). The server never shuts down and all services can be reconnected immediately. It is very strange. I do believe that the server installed some automatic updates at the beginning of this week when this all started happening. I am not sure if one of the updates is causing the server to do this or not.
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Jan 24, 2010
my ipw2200 w-lan driver's been disconnecting frequently and I've done some research on it, while seeing that it's been a frequent problem, in the past.
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Mar 11, 2010
I'm using Ubuntu 6.06 and Apache.I connect to the machine via FTP. It seems as if the connection times out every few seconds. If I u/l a file it will take 15 seconds to connect. Once that connection is open I can u/l more files instantly. If I wait a few seconds it closes, then I have to wait another 15 seconds for it to reopen. Any ideas how to make it not time out so frequently?
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Apr 13, 2010
I upgraded to Karmic the other day and my Wireless Internet has been disconnecting every hour or so. I had the same problem on Intrepid but I managed to fix it somehow. After disconnecting, it will reconnect after a few seconds.
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Jan 8, 2010
I have ubuntu 9.10 server installed, I am connecting with putty over ssh 22. but after a while (about 20-30 mins) the connection drops. and I have to connect again. is there any configuration for that?
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Aug 17, 2010
I've had a computer running Ubuntu connected to my TV for a few weeks now, but as of yesterday, I can't get it to keep a connection to the Internet. Everything works well for an hour or so after a reboot, but then no WAN connections work. When this happens, no sites load in Firefox or Chrome, I can't ping Google, I can't SSH to the box from work, and none of the pages I have running on apache load from remote computers. However, all local area connections seem to work fine. SSH from within my LAN takes much longer than usual, but it does still connect.
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May 12, 2011
Something really fuŃked-up is going on with my machine... whenever I try to update my repositories (regardless of if it's by Synaptic, Ubuntu Software Center or terminal via sudo apt-get update), my PC loses connection, and I need to reset my WLAN twice to make it work.It's in a specific part where it happens...
Code:
Ign http://archive.ubuntu.com natty InRelease
Ign http://extras.ubuntu.com natty InRelease
[code]....
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Oct 8, 2010
I am using centOS 5.My internet connection drops at irregular intervals and it restores only after reboot the system.Even if i deactivate and re-activate it using Newtwork cofiguration utility,It shows its active but it cannot open any page.
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Aug 17, 2010
Recently, Putty keeps intermittently freezing and locking me out of the system (i.e. I can't stop the session and I can't re-login via ssh again until I've gone to the machine and pressed "reset").
So far, it mostly occurs when opening a file in VIM, but it does sometimes occur when using tab to auto-fill a file or directory name at the command prompt.
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Oct 18, 2010
Every now and again my internet drops out for no apparent reason. I try dhcpcd -k eth0/dhcpcd eth0 and nothing. I try modprobe -r <driver> modprobe <driver> dhcpcd blah blah and nothing. /etc/rc.d/rc.inet1/2/d restart. Nothing. The only thing that works is rebooting my system. how to reset my connection without rebooting?
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May 1, 2010
I'm having a really strange problem with my wifi connection on my laptop. The ethernet connection works fine and so does the wifi connection - as long as I sit within one meters range from my router! As soon as I take the laptop further away the connection drops. The router is still being found by network-manager and the signal is just below 100%, but when I try to establish a connection it fails.
I'm sitting here on a fresh Ubuntu 10.04 install, and I had exactly the same problem with 9.10. That time I went through a lot of different procedures, and in some strange way the problem was solved. I haven't been that lucky this time though, I've tried reinstalling network-manager, using ndiswrapper, installing the wireless backports package, tried all kinds of drivers.. nothing works.
There shouldn't be any problem with the connection itself; I've had a perfect connection downstairs but now I can't even connect if I stand two metres from the router! Has anyone experienced anything like this and managed to fix it? My wireless card is Atheros AR2413. This is an example from daemon.log
Quote:
Apr 30 00:45:51 petter-laptop NetworkManager: <info> Activation (wlan0) starting connection 'Auto Wester'
Apr 30 00:45:51 petter-laptop NetworkManager: <info> (wlan0): device state change: 3 -> 4 (reason 0)
[Code]...
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May 17, 2010
I have an Acer Aspire One ZG5. 160GB HD, 1GB RAM model. I've done a fresh install and an upgrade of 10.04 and have the same problem both ways. I am able to connect to my wireless connection but it is dropped after about 5 minutes and have to wait about the same time to reconnect. I've had to roll back to 9.10 being that I use the netbook for work and school on a daily basis.
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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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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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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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Jun 13, 2011
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!
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Mar 23, 2010
my wireless will connect to a well known connection but will sometimes drop the connection then tries to reconnect. Sometimes it will reconnect w/o a problem but most times it will fail and when it fails it will refuse to even recognize that same wireless connection.
If by a small chance it does recognize the network then when you click on it, it will ask you again for the password, which is already saved onto the computer. After entering the password it will try to reconnect, then fail.
Only solution is to reboot.
I was wondering if there was an easy temporary fix of just reloading the software that controls the wireless.Such as, my audio doesn't work when I boot. I need to reload the ALSA driver using sudo /sbin/alsa force-reload
Is there something specific to the wireless that I can force-reload and it will start working w/o having me reboot my PC?
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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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Jan 22, 2011
I just got a wireless dongle because in my house wired is not possible, but now I am getting problems. The dongle is a tp-link that turned out to be plug&play (unlike windows) and seems to work perfectly, except when the screen locks. I have tried to download overnight several times and it seems like a few minutes after the screensaver comes on or after I lock the screen, the connection is dropped. It works completely fine normally. So what changes when Ubuntu (its maverick with all updates) locks the screen? Also, when I log back in, I have to unplug the dongle and plug it back in to get it to connect again.
This is really REALLY annoying, enough to make me switch back to windows if I can only download while I'm looking at the screen.
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Apr 24, 2011
My wireless connection drops after a while when downloading torrents. I have to reconnect manually. Current configuration is Macbook Pro 5.5 with Broadcom card and Lucid. I've tried with Transmission and KTorrent. It's not a network problem as my Win laptop works smoothly and with higher transfers rates (i.e. 1MB/s in Win vs. 300KB/s at most in Ubuntu).
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May 29, 2011
I tried Ubuntu, Kubuntu and now Xubuntu, all 11.04. I've also tried Deluge, Transmission and Ktorrent. With 10.10 everything worked fine (all variants). Also, in Windows 7 it's working fine. But now it drives me crazy. As soon as I start a torrent, the download starts but after 30 seconds or so the download drops to a zero. Also, I'm not able to browse anymore. The networkmanager tells me I still have a connection.
Some say it has something to do with the number of peers the client connects to, or it's my router. My router isn't the problem, as it's working fine with 10.10 and windows. So maybe it's the number of peers right? Question. Why can I connect with over 200 peers at the same time while I'm using 10.10 or windows, but can't do it with 11.04? Better put, what should I do to get this working fine again? Going back to 10.10?
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Feb 18, 2011
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.
Here are my configs and logs:
CONFIG FILES:
/etc/ppp/option.l2tpd
-----------------------------
ms-dns 10.248.75.4
ms-wins 10.248.75.4
asyncmap 0
auth
crtscts
[Code]....
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May 13, 2010
I can connect to the wireless at my school, but the connection drops frequently and regularly. Network Manager still shows bars indicating the network strength and shows that it's connected to the network in the dropdown. Selecting the network again causes it to indicate that it disconnects and reconnects. At this point I have wireless until the connection drops again. Possibly relevant details: This is the Purdue PAL2.0 network, which can be tricky to connect to, particularly for Linux users. It's a hidden network using WPA2 and PEAP. My computer is a Dell Inspiron 1420n laptop, circa August 2007.
[Code]...
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Aug 19, 2010
I have Ubuntu command line only installed on my HTPC (it is XBMC Live installation). Kernel is 2.6.31-16-generic. My wi-fi card is AW-NE770 from AzureWave (mini-pci on Zotac Atom motherboard). I have successfully configured wireless connection to my router. Unfortunately, after short period of time connection drops. When I restart /etc/network/interfaces all goes back to normal. When connection is dropped, iwconfig shows that access point is not assigned. I have already tried installing backport drivers, removing security on the network (WEP and WPA), assigning static IP or using DHCP. Nothing works. I know it is not the router or my internet because I can be at the same time on my laptop and that works fine.
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