Ubuntu Networking :: Server Randomly Times Out/Hangs/Disconnects
Jul 12, 2011
I have an Ubuntu 11.04 Server set up for my small office whose sole job is to run as a samba file server. The problem is that it randomly hangs. For example, I can connect the clients just fine, however if left idle it tends to take a few moments to work when you try to go back into the shared folder or drive. The client will behave like it is disconnected and is trying to search for the drive only to a few moments later, go right back to normal behavior.
If I ping this server while this is happening my requests will time out for a little while and then just start working. The same thing happens when I try to connect with Putty or through WebMin. One second its unreachable then the next its fine.I have already tried swapping out patch cables (which actually seemed to work for about 2 weeks) and I have patched it to an alternate port on the switch. The only thing I have not done at this time is to change the NIC.All the clients are running Win7 with the exception of two XP machines.Simply put, its like the machine just goes dormant for a while until you ping at it for a while to wake it back up.
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Jun 25, 2010
After upgrade to Lucid I have experienced intermittent wireless disruptions. The wireless just cuts out and reconnects.And I was hoping to continue or follow up on the same thread however with the released version.I tried replacing network manager with wicd and I tried the other driver options both without success.I'm currently using the Broadcom B43 driver, when I tried the Broadcom STA driver wireless would not work. I use the 64 bit OS, and this problem did not appear prior to the upgrade.
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Jul 3, 2010
I'm having a problem with my wireless connection. When it runs, it's perfect, but every once in a while (and increasingly more often) it randomly disconnects and doesn't reconnect when I click reconnect, even if I manually disconnect it. Every time this happens, I have to reboot the system, after which it works perfectly. Then it dies again.
I've checked around the forums, there are some similar threads but they seem to be specific to the wireless card. The reboot method works, but I'd really like to find a way to solve the problem without having to resolve to the Vulcan nerve pinch. I'm a real newbie to Linux and the more complex side of computers in general, and I hardly know what is what, so please excuse me if I seem a bit thick.
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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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Feb 3, 2010
When I first turn it on to the desktop, it automatically connects and disconnects automatically 5 times then sometimes it would disconnect a few times randomly out of the blue.
This ia an external single usb wireless adapter you plug in the usb port on my desktop tower.
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May 5, 2011
I just upgraded from 10.10 to 11.04 but other than that the most annoying thing I've found is that my wifi will randomly disconnect from the network...like it will say its still connected but pages wont load and all my torrents just stop, and then I have to manually disconnect from the network and then reconnect and it works for about a min and then happens again. I couldn't even get enough internet to post this from my laptop so I had to post this at school from a windows. Idk whats going on but it sucks because I cant really use the comp without the internet..
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Oct 8, 2010
I'm not sure if this started with the 2.6.34.4 or 2.6.34.7 update, but one of those.At random intervals the USB subsystem disconnects. When that happens the monitor screen goes black (no input signal) and then returns 1 - 2 seconds later. This was happening every once every 1 - 2 days; today the count is 10 times. It's gotten really annoying.There is a topic about USB mouse and keyboard becoming unavailable due to recent kernel updates. That is not the issue here; I have tried disabling USB auto-suspend with no observable change in behavior.Or could it be that I have a defective mouse?
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Sep 6, 2010
I have a hp dv3 2110eg laptop with OpenSuse 11.1 (KDE 3.5.10) and Windows 7 dual boot. My wireless disconnects and connects automatically at random intervals. I do not observe this behaviour when operating my laptop under Windows 7. Following some suggestions given in this forum , I uninstalled networkmanager and installed wicd. However, this does not seem to solve the problem. Given below are the relevant information.
uname -r
Code:
2.6.27.48-0.2-pae
/sbin/lspci
Code:
03:00.0 Network controller: Intel Corporation PRO/Wireless 5100 AGN [Shiloh]
Network Connection
/sbin/lspci -n
Code:
03:00.0 0280: 8086:4237
/sbin/lspci -nnk
Code:
03:00.0 Network controller [0280]: Intel Corporation PRO/Wireless 5100 AGN [Shiloh]
Network Connection [8086:4237]
Kernel driver in use: iwlagn
Kernel modules: iwlagn
dmesg
Code:
iwlagn: Intel(R) Wireless WiFi Link AGN driver for Linux, 1.3.27ks
iwlagn: Copyright(c) 2003-2008 Intel Corporation
iwlagn 0000:03:00.0: PCI INT A -> GSI 18 (level, low) -> IRQ 18
iwlagn 0000:03:00.0: setting latency timer to 64
iwlagn: Detected Intel Wireless WiFi Link 5100AGN REV=0x54
iwlagn: Tunable channels: 13 802.11bg, 24 802.11a channels
phy0: Selected rate control algorithm 'iwl-agn-rs'
firmware: requesting iwlwifi-5000-1.ucode
The dmesg output shows firmware request (highlighted with red font), but I have already installed the firmware using YAST.
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May 20, 2011
In the week since I upgraded to Natty, my system has spontaneously and randomly rebooted three times. Once when opening a document, one time when clicking a link and another time when I wasn't doing anything. This never happened with earlier releases
Toshiba Satellite A305
Intel Core2 Duo (64 bit)
3964 Megabytes Installed Memory
Intel 4 Series Express Integrated Graphics card
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Feb 17, 2010
I have used debian in the past and I am pretty comfortable with it but I have been having an issue. My desktop has randomly frozen two times. All my applications are still running though. For example, I was still able to talk on skype with my friend. However, all I can do is move my mouse but I can not click on anything forcing me to restart. Here are some things that might be helpful:
-I was using compiz both times (I am assuming this might be why. however, I have used compiz on ubuntu and I have never had a problem)
-I use an ATI graphics card
-It froze the first time when I accidently tried to extract the skype install deb.
-It froze the second time when I pressed close in software sources
-Since I have installed debian, I have installed compiz, compiz effect packages, removed openoffice, installed opera, installed google chrome, installed flash, and installed skype.
Does anyone know why my desktop crashed?
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Oct 17, 2010
I'm running Maverick on an Acer AO521 netbook. I've got a k125 processor and an ATI Mobility Radeon HD 4200 series video card.Since upgrading to 10.10 with the new version of gnome my computer has started getting stuck on blank screen when booting the GUI. Not every time, but most times i boot.If I boot to command line through GRUB there's no problem. When I try to run gnome from the command line i get the same problem.
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Dec 1, 2009
I don't know why, but when i first boot openSUSE at the morning in my Aspire it hangs over and over again. I don't know why is this, but the gecko appear, the white bar appear, and moves 1cm, and then, puff no more blinking from the hard drive. Then i force te reboot, over and over until works.The message is: acerhdf: no Aspire One hardware foundWhen i first installed the mini with openSUSE it works perfect for a week, and then start this problem.I have tried with different kernel flavors (like desktop) and still nothing.
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Apr 28, 2010
I'm at a loss in trying to debug a problem I have with my media centre. Basically I'm getting random system hangs and when I say hang I mean proper hang - processor stops dead. No animation, not network connectivity, no keyboard/mouse response, nothing. As for it being random - it has happened during movie playback, during idle, after being up a short time, or a long time, it doesn't matter, so it can happen any time really. The logs show nothing suspect, except they just stop and there is nothing common between the logs of two failures. It happens on both my 'old' ubuntu 9.04 partition and on my new 10.04 partition.
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Feb 15, 2011
32 bit Lucid is hanging at random times for me. it always happens when there's some sort of full-screen overlay, like when waking from screensaver, or when using gksu (dims the screen). The machine will remain unresponsive for 30 seconds to a minute, then becomes usable again, just with the desktop not refreshed. Nothing of interest in the logs when this happens. The last thing upgraded in the machine was the graphics card (now running a GTS 450). 3d apps work just fine, temps are just fine, and I have no reason to believe it's hardware.
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Jul 23, 2010
I get the newest fedora 13 dvd install & the live cd. Put on the disk and try to install. But the installer hangs on random times, so i cant install the system. Sometimes hangs on the anaconda start, others in the partition tables, others in the language section.
i try to run the live cd and install from there. Ok the first time the cd boot very nice . But when i try to install , the pc hangs again. Other times the boot from live even finish, when the last percents r coming, hangs again.
I all hangs, the dvd drive stop's and never return. So the Fan of cpu start to run very quickly and stay there forever until my patience permits.
So i use the ubuntu installer ( almost 4 years with u fedora, and need ubuntu installer!?shame on u) and search some information about the case. Yes, the last ubuntu boot,install, and run out of the box very quickly!
I see others with Dell & others brands still have problems with hangs and freezing , in boot and installs, so the first thing i search was the kernel parameters and try to use some flags.
I think the source of this kind of problem is the acpi . When i check the flag pci=noacpi or acpi=off , i have see that on the pre-anaconda start, when u choose the english language in text mode, clicking next the installer cant anymore find the media DVD, and the hard disk with the partition table. Sometimes the installer brings me the option to search in the ubuntu partitions, sometimes no.
How to debug and search the source of the problem? Any way? code...
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Jun 14, 2010
I have an urgent major problem. I tried to install F8, F9, F10, F11 and F13 live but all gave the same problem, which is I can't install the OS.the problem is Fedora can't communicate with ATI Radeon HD 5145.....the setup just hangs up some times hangs when it tries to run anaconda....
Now F10 X86_64 was installed normally, but after the first reboot.. it gone crazy...and started to display rubbish...going to init 1 and trying to run the GUI I got error server X.
Also ubuntu didn;t work too
My laptop is
Toshiba Satellite L650-10M
Intel CoreTM i3-330M Processor (2.13GHz , FSB:1066MHz , 3MB 2nd Level Cache)
Memory 2,048 MB DDr3 RAM (1066MHz) System Memory
320GB Hard Disk sata
ATI mobility Radeon HD 5145 , 512MB dedicated Up To 2,810MB Graphics
Wireless technologies 802.11 a/B/G integrated Wi-FiTM ;Bluetooth
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Aug 25, 2011
I'm trying to install Wheezy (amd64) from the daily netinst image with the text-based installer. The PC will lock up randomly at some point in the process (usually after about 5-10 minutes). The video signal cuts out, keyboard lights are unresponsive, and I have to hard-reset the machine.I was previously trying to install Linux Mint Debian Edition and had the same problem. Another user reports that this is due to a bug in the nouveau nVidia driver, but I can't confirm it.URL...
I assume the Debian text installer isn't using nouveau, so it seems unlikely that would be the problem. The random timing does suggest an overheating problem, though, and the fact that the video signal drops out would seem to implicate the video card. I had no lockups at all with the OS that was previously installed (Ubuntu 11.04).
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May 14, 2010
Both server (web01), in DMZ, and client (app01), intranet, are Linux OEL5.5.
A few hints follows:
1- I ssh to web01, in DMZ, from a intranet machine on my desktop, export my DISPLAY, and try to bring up xclock; nothing happens.
2- traceroute from web01 to app01 fails.
3- NFS mount from web01, nfs server, to nfs client, app01, fails.
How should my network configuration on web01 or app01 be to make this NFS mount from web01 to app01 work?Each server has 4 NICs, I've only used eth0.
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Jul 6, 2009
I run a CentOS 5.1 using VMServer on XP. From home I can successfully 'cvs login' to my CVS server. But starting 'cvs update', the connection times out.
Netstat shows the connection as established:
# netstat -an | grep 2401
tcp 0 0 192.168.1.35:58651 85.25.xx.xx:2401 ESTABLISHED
CVS server is domain managed with dnsalias service (dyndns.org)
Using the same computer at work (other ISP) I have no problems - cvs update works just fine.
Can I assume that it is not a port/firewall issue, since "cvs login" is successful? Any clues where to start diggin'?
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Sep 18, 2010
I have a very strange problem with Fedora 13 on my home PC. When booting it just hangs at random points in the boot process. When it happend the first time, I thought the PC probably is completed frozen, but then I discovered that hitting the return button got the boot process going on again, but just step by step. That means on every boot I have to keep hitting the return button until gnome starts up, that's very annoying. So for any reason the boot process seems to switch to interactive mode somehow...
I already removed the kernel boot options rhgb and quiet to see, where exactly this happens in the boot process. But as I said, it seems to be completely random. Sometimes it's when "Starting udev", sometimes, when setting up eth card, when starting atd, and so on. It's different every time.
By the way, a similar thing happens when shutting down. It can take up to half an hour until the PC really shuts down. But it's usually going faster if I just keep hitting return after issueing the shutdown command (which actually looks a bit dull). But the PC finally shuts down at some point. That's not the case when booting up. I thought, maybe there's some kind of timeout problem. But even waiting for two hours, the PC does not startup without keeping hammering the return button
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Jan 23, 2010
When I am running linux on my laptop, my ssh session to a particular server keeps getting randomly dropped. What should I do to troubleshoot the problem?
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Jun 3, 2011
I know this is a rather too generic thread, but bear with me so I can try to explain it... I use Slackware64-current almost exclusively both at work (95%+ of the time) and at home (all the time! Even the wife has growing tender feelings for Slackware! ).At work, my box is a HP dc5850 microtower (CPU AMD Athlon Dual Core 5200B with 4GiB RAM DDR2). It's a pretty decent work machine. At home, I built from parts an AMD Phenon II X4 965 with 8 GiB RAM DDR3 - it's an awesome machine!
In both computers I have recently installed Slackwarew64-current and have applied the multilib packages from AlienBob (great work, btw!).I'm a Java developer and have created a directoy under /opt for all the software I need for work (JDK, Apache Ant, Apache Tomcat, Apache Maven, etc). All settings are exported in /etc/profile, which is posted here.But, occasionally, I feel the whole system (on either machine) to respond very slowly, like there's some sort of process eating up all resources. Considering what I have "under the hood", that's quite annoying
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May 20, 2010
I have Centos 5 Installation with following Linux ipmpls.mobilink.net.pk 2.6.18-8.el5xen #1 SMP Fri Jan 26 14:42:21 EST 2007 i686 i686 i386 GNU/Linux. I have Nagios running on it for monitoring switches. It also runs postfix to give email alerts in case of a switch is unreachable. The problem is that the server hangs for a minute and returns to normal operation. During this period if a switch is polled it cannot be reached and hence Nagios shows the Flapping state on the switches. I need to understand as to why the server hangs
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Oct 24, 2010
I love openSUSE (using 11.2). I have it installed on a Dell Dimension 2400 (2.4G Celeron CPU, 2G RAM), but I have a huge problem. It will randomly freeze during operation. I'll be able to move the pointer with the mouse but unable to click anything and I have to hold the power button down to shut it down and restart. The problem seems independent of the program I am using or what I am doing with the machine. I have not been able to recreate the problem. One more detail. The same problem occured when I had Ubuntu 9.10 installed on the same machine
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Jan 6, 2011
My remote "NX Client" disconnects after 60' when server goes to sleep, leaving my session suspended. My server is running Ubuntu 10.10 Desktop Edition, Power Management is configured to sleep after 60'I need the server to go to sleep if nobody's using it. I don't need the server to go to sleep in case:media is being streamedremote connections are in useHow to configure my system to look further than just keyboard and mouse activity before initiating sleep?PS: Media streaming can be DAAP/RhythmBox; DLNA/MediaTomb; SLIMP3/Squeezebox serverRemote connections can be SSH/PuTTY; SSH/NX Client
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Feb 23, 2010
This is probably a very basic question related to running and X11 application on a remote machine.
I connect from a linux machine to another by ssh -X remote.machine
After that all X11 applications work fine. But after a while (~ 20 minutes), I can no longer run the applications. I get a message like containing "cannot connect to X server localhost:10.0".
My host machine has in /etc/ssh/ssh_config "ForwardX11 yes".
Is there anyway to connect to a remote machine with a permanent X11 session?
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Jan 29, 2011
I have a Broadcom Corporation NetXtreme BCM5721 network card on my server at work.Everything works fine for a few weeks, then randomly the network connection on the server will stop working. After it stops working, I will try to reconnect with the network manager, it shows a wired connection available, it shows the "connection in progress"animation, then the "connection disabled" icon.
I uninstalled the network manager and used manual configuration, but do you think the network manager was the issue? I can't have the server disconnecting randomly every few weeks with no way to know what the real problem is. Was there an issue with the network manager with 10.04?
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Mar 17, 2010
I am trying to run VNC server on a standard OpenSUSE 11.2 Gnome Desktop installation.I have done this succesfully with SLES for sometime, however, my experience with OpenSUSE 11.2 is that it doesn't work out of the box!!
I am using XP Pro VNC viewer Free Edition 4.1.2 to connect.
I have removed "localhost" from the # special IPv6 addresses in hosts. This fixes the black screen issue for me. All appears well until I disconnect and retry the connection after 5 minutes or so. Then VNC client makes the connection and then immediately disconnects. It's a no go from then on. If I reboot OpenSUSE 11.2 it works again but then reconnect fails again after the same period of time.
I am trying NX now as an alternative. However, I would much prefer to use VNC.
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Jan 30, 2010
When I use all the band(transmission or browsing too many videos) it disconnects after few minutes and it doesn't connect again until I reboot.
lspci:
05:01.0 Network controller: RaLink RT2760 Wireless 802.11n 1T/2R Cardbus
Code:
sudo lshw -C network
*-network
description: Ethernet interface
product: 88E8056 PCI-E Gigabit Ethernet Controller
[Code].....
I could use N and WPA2 by following this thread. If it is possible to reconnect without reboot would be a possible workaround
(I use Ubuntu Karmic x_64)
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Apr 17, 2010
My internet disconnect mabe every second hour and I have to restart the Ubuntu to get internet again. This started to happen when I bought a new wireless card called NETGEAR WG311v3. The live CD didnt have the drivers for it so I had to download XP drivers and install it with ndisrwapper.
So my question is how do I fix it? Do other network drivers crash with my current one? If so how can I see wish one to remove?
Note that my card works fine with XP on same computer.
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