Fedora :: F13 - Network Monitor Dropping DNS

Sep 2, 2010

I'm running F13, using Network Monitor to control my DSL connection. Until recently, all was well. Then, about a month ago, I tried changing my DNS numbers for reasons that seemed good at the time. Being properly paranoid, I kept my old DNS numbers in a text file. It's a good thing, because from then on, every time I needed to reboot (I only reboot for a kernel update, only shut down for hardware issues or a power failure.) I had no DNS until I copied them back into the configuration, disabled and re-enabled the connection. We've been having some work done here on the exterior, and every time the workmen come they manage to drop the power on the room the computer's in. I don't know if it's significant that all of the DNS losses have come after a power "failure," but it's worth mentioning.

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Ubuntu Networking :: WiFi Dropping And Dropping Speed

Feb 25, 2010

As soon as i'm starting to copy a large file enough file (>700Mb) to my ubuntu box (connected to an Asus router via wifi) from a Windows 7 client (connected to router via ethernet cable) i get a dramatic drop in speed. upload starts at 1,0Mb/sec with a ping to ubuntu box at <1ms, and in 2 minutes it drops to 200kb/sec with a ping of over 1000ms! The ping increases with every second in a linear progression.

To exlude router as a possible problem copying to a windows 7 notebook connected to router via wifi results in an average of 2,7Mb/sec with an average ping of 150ms.

MB Model: Asus P5B Deluxe wifi
OS: Ubuntu Server 9.10 + desktop installed
Wifi configured via GUI

2. lsusb

3. wlan0

4. lsmod

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OpenSUSE Network :: 11.4 Dropping/cannot Connect?

Apr 21, 2011

I loaded up OpenSuSE 11.4 on a HP DL360 G5 64 bit server. When the server boots up, I can connect via the wan or the local network segment. After some time, I will lose the WAN connection. If I ssh back into the computer from another computer the WAN connection can connect again for a period of time. The WAN connect is from the Internet. The firewall is off and so is AppArmor.

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Ubuntu Networking :: Network Connections Keep Dropping?

Jan 30, 2010

Here is the layout of my network:My cable modem plugs into eth0 on my ubuntu server which acts as a firewall (shorewall) and dhcp server to my lan. A dd-wrt access point is plugged into eth1 and then a bridge connecting my xbox360 and another bridge connecting a desktop computer.Everything works pretty well, except a few times a day, my network will just shut down. The wireless on my macbook and my wife's laptop will just shut down, and if my xbox is running, it will lose connectivity. It will be down for maybe a minute or two, and then come back up like nothing ever happened.I never had this problem when I had just a dd-wrt router running everything instead of my server.When I ssh into my server afterwards and run dmesg, this is what I will get:

Code:
[398598.251548] martian source 169.254.1.255 from 169.254.1.33, on dev eth1
[398598.251565] ll header: ff:ff:ff:ff:ff:ff:00:23:69:3d:b1:82:08:00

[code]....

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Ubuntu Networking :: Network Intermittently Dropping?

Jul 7, 2011

My network seems to be dropping every few minutes to few hours. There are a lot of networks in the area (apartment in NYC) and I wonder if it might be due to competing traffic. Any ideas for how to tell what channels other networks are on? or other modifications to router settings that might improve performance in this situation?Additionally the "Invalid Misc" in iwconfig is counting quite quickly.

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General :: Ubuntu Box Keeps Dropping Wired Network Connection?

Jul 11, 2011

I have an Ubuntu box, 11.04 x64, running on a Dual Opteron SFF box (iWill ZMaxDP... pretty old machine). Up until a few weeks ago, it was acting as a Windows 2008 Server, but i moved it to Ubuntu.

Anyway, the machine will not stay on the network for any amount of time, without falling off... I have changed network cards, cables, ports on the switch, etc, and nothing seems to work. I have a Windows 2003 box giving out DHCP addresses, and for a while, i actually tured that off and setup a second Ubuntu box to give IPs... it made no difference. The box gets an IP, and can ping outside for a bit (2 min or so) and then just looses connectivity... ifconfig shows it with an IP (i have tried both Static and DHCP config) and nothing seems to work...

[Code]...

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Ubuntu Networking :: 9.10 Dropping Network Connection Randomly?

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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Ubuntu Servers :: Dropping Network Connection And Other Errors

Sep 11, 2010

I set up the web/backup server for our department and I'm having some major issues. Firstly, the server seems to be dropping the network connection periodically. I checked all of the logs and it appeared to be an IP6 issue as the only message that seemed to correlate with it was "eth0: no IPv6 routers present" in syslog. I added "ipv6.disable=1" to my boot options in menu.lst and this seemed to take care of the problem. However, I woke up this morning and the server was back down.

This didn't seem to take care of the problem. It seems to occur when my automatic backup scripts go through. I have several BASH backup scripts that use rysnc over SSH to backup several computers to the server and the server to my desktop at home. I was able to trigger the problem a couple of times running the backup script this morning. Now, I'm getting the following error when running the script, instead of losing the network connection:

Code:
Sep 11 10:22:40 chemistry kernel: [ 396.892699] BUG: unable to handle kernel NULL pointer dereference at 0000000000000118
Sep 11 10:22:40 chemistry kernel: [ 396.892715] IP: [<ffffffff811426c0>] __dentry_open+0x240/0x370
Sep 11 10:22:40 chemistry kernel: [ 396.892728] PGD 1113d5067 PUD 11458c067 PMD 0
Sep 11 10:22:40 chemistry kernel: [ 396.892737] Oops: 0000 [#1] SMP
Sep 11 10:22:40 chemistry kernel: [ 396.892743] last sysfs file: /sys/devices/system/cpu/cpu1/cpufreq/scaling_governor
Sep 11 10:22:40 chemistry kernel: [ 396.892750] CPU 1 .....

I tried booting with a previous kernel to see if that was the problem and I'm still getting this error. I've searched through all of the logs that I could think of to try to track down any software based problems and I just don't see anything. In the past, whenever I've run into such serious with a Linux box that popped up out of nowhere, it's always been a hardware failure. I've currently disabled all of the backup scripts and I'm going to see if it lasts through the weekend.

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Debian Configuration :: 7.4 64bit Network Connection Is Dropping On Server

Oct 16, 2015

We are having an issue where our network connection is dropping on our server. Everything was working for about a month without issues then suddenly we experienced a network outage. Here is what I found in our logs. Rebooting the machine was the only way to have everything come up.

Oct 16 09:20:59 server2 kernel: [2612816.936085] ------------[ cut here ]------------
Oct 16 09:20:59 server2 kernel: [2612816.936101] WARNING: at /build/linux-FpPMO6/linux-3.2.54/net/sched/sch_generic.c:256 dev_watchdog+0xf2/0x151()
Oct 16 09:20:59 server2 kernel: [2612816.936106] Hardware name: ProLiant DL380p Gen8
Oct 16 09:20:59 server2 kernel: [2612816.936110] NETDEV WATCHDOG: eth0 (tg3): transmit queue 0 timed out

[Code] ....

We have the same exact server, running the same exact debian version for over a year with no issues.

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OpenSUSE Network :: Dropping Connection - Ignoring Default Gateway

Nov 1, 2010

I recently upgraded a 11.0 installation running on Xen Server to 11.3. I am experiencing frequent network disconnections now. The ip address and default gateway is assigned statically. However, the system seems to ignore the default gateway after a while. Then after several minutes it seems like it comes back.

Code:
root@poe5e:~/ > route
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
192.168.111.0 * 255.255.255.0 U 0 0 0 eth1
172.16.107.0 * 255.255.255.0 U 0 0 0 eth0
link-local * 255.255.0.0 U 0 0 0 eth0
loopback * 255.0.0.0 U 0 0 0 lo
default 172.16.107.254 0.0.0.0 UG 0 0 0 eth0
root@poe5e:~/ > ping 172.16.107.254
PING 172.16.107.254 (172.16.107.254) 56(84) bytes of data.
64 bytes from 172.16.107.254: icmp_seq=1 ttl=255 time=0.515 ms
64 bytes from 172.16.107.254: icmp_seq=2 ttl=255 time=0.484 ms
64 bytes from 172.16.107.254: icmp_seq=3 ttl=255 time=0.496 ms
64 bytes from 172.16.107.254: icmp_seq=4 ttl=255 time=0.473 ms
^C
--- 172.16.107.254 ping statistics ---
4 packets transmitted, 4 received, 0% packet loss, time 2997ms
rtt min/avg/max/mdev = 0.473/0.492/0.515/0.015 ms
root@poe5e:~/ > traceroute orl3akm1n
traceroute to orl3akm1n (10.111.19.19), 30 hops max, 40 byte packets using UDP
1 172.16.107.250 (172.16.107.250) 0.405 ms 0.398 ms 0.357 ms
2 * * *

When my sessions suddenly die and I have to coax it into routing correctly again.

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OpenSUSE Network :: GNOME 3 SSH Passphrase Dialog Does Not Allow Pasting Or Dropping

Jul 19, 2011

I'm using OpenSUSE 11.4 and the GNOME 3 packages in the GNOME:STABLE repository. I maintain an application and have a remote Mercurial repo hosted at BitBucket, which requires SSH to do any push/pull operation.

My passphrase is just that -- a phrase, not a word -- and it's too long to type accurately without seeing it. I cut and paste it from a web page. When I'm asked by a console app for the passphrase, I can do that. The GNOME SSH passphrase dialog does not allow pasting or dropping, so I can either try to type it or hit cancel. Normally, ssh-add provided a way around this; it would ask you for the phrase on the console, and I could paste it.

This doesn't work in GNOME 3. ssh-add still asks me for the passphrase, but when I try any operation that requires the key, the dialog pops up again. How is it possible to get ssh-add to work, or (preferably) get rid of the dialog?

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Ubuntu Networking :: Network Manager Keeps Dropping The Wifi Signal?

Dec 12, 2010

I've got a Belkin F5D8055 v1 wifi usb adapter. I use the rt2800usb driver for it. Strangely it uses only 54 Mbit/s instead of 300 Mbit/s. I thought it was ok, since I use the wifi only for accessing the internet. However, the network manager keeps dropping the signal, and I can't understand why. I'm close enough to the router.

iwconfig:
wlan0 IEEE 802.11bgn ESSID:"MyHomeRouter"
Mode:Managed Frequency:2.447 GHz Access Point: 00:22:2D:06:2C:50

[code]....

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Ubuntu Networking :: Wireless Network Continually Dropping And Reconnecting?

Apr 13, 2011

Within the last couple of days or so, my wireless has been on the fritz. It keeps disconnecting and reconnecting every minute or so, which is annoying to say the least. The information relating to my wireless network is:

Laptop model: Toshiba Satellite L350
Wireless interface: Atheros AR5001 Wireless Network Adapter
Interface:

[code]...

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Ubuntu :: Hardy Heron Kept Dropping Network Connection (both Wired And Wireless)?

Apr 30, 2010

using Hardy Heron on a old Thinkpad T41.This is a fresh install system and I noticed it kept dropping wireless connection. After google around, seems like this is a common problem? Then I switched to wired network, and turned out the same thing happens again. Looks like doesn't matter wired or wireless, it kept dropping itself from time to time.
fter checking syslog, I found something interesting...it kept complain eth0 is invalid, then it said it found a better connection?I found that extremely weird..

Code:
Apr 30 06:24:32 support kernel: [ 961.236895] e1000: eth0: e1000_clean_tx_irq: Detected Tx Unit Hang

[code]...

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Fedora Installation :: F13 Network Install Will Not Sync On Monitor

Jun 28, 2010

I have an F11 on an old box 686 athlon with an old nVidia Corporation NV5 [RIVA TNT2/TNT2 Pro] (rev 15) AGP. I am trying to do a network install upgrade to F13. I cannot get it to display the install menus from the network install disk. I get the initial screen with the install, basic video, repair, etc choices, but after I select the install/upgrade option, I see the CD drive read but the LCD monitor display never appears. The ready light on the monitor just keeps blinking and the display stays dark. Is there anyway of getting an error log to see what is going on?

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Fedora Servers :: Monitor What Sites People Have Been Accessing On Network?

May 14, 2009

Does anyone know of a tutorial or site where I can learn how to monitor what sites people have been accessing on a network?

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Fedora :: Software Update Servers Down - System Monitor Shows Practically No Network Activity

Aug 21, 2011

I tried to do a scheduled software update several times today (8/20/11) and nothing seems to download, though I do get the "Downloading" PackageKit dialog message (the System Monitor shows practically no network activity). In between tries I downloaded some 600 MB .iso files (about 10 minutes each) so I know my internet is working properly. That leaves either PackageKit got hosed in my last update, or servers are down.

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OpenSUSE :: The KDE Network Monitor Requires 3 Reboots Before Being Able To Connect To Wireless Network

Mar 10, 2011

After installing 11.4, I need to type in the command to update the firmware for a broadcom wifi adapter. Then I needed to reboot, twice, before the system knew to use the adapter (where the adapter wifi light goes from orange to blue).

Then I needed to add my wireless network and type in my key. But the key does not take. If I click on my wireless network icon, it just re-asks for the key and does not connect nor give any other message. Network icon continues to display no connection.

So I need to reboot again.

When the system starts again, the adapter is blue, I click on the icon for my wifi network and it connects without asking for my key and I can then set to start my wifi by default.

Now my wifi works fine.

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Fedora Networking :: F13 Dropping Internet Connection And Not Reconnecting

Sep 26, 2010

I am running F13 on my Desktop (with a Ralink RT2870 wireless card) and also on my Laptop (Acer Aspire 5738Z) and am connecting to the internet via a NetGear router. On my Laptop I can connect to the internet fine with no problems. However on my Desktop when I turn my computer on it connects to the internet fine, and works, however after some time (maybe 5-10 minutes) it disconnects and the box asking for the password reappears, then I click connect but no joy.

The connection box just keeps reappearing and it won't connect again until I restart the computer (although sometimes it takes more than 1 restart!). This is not a signal issue, as my Desktop also has a Windows partition and that connects to the internet fine and does not drop off. I have installed the RT2870 driver through rpmfusion, which didn't fix the problem, although uninstalling the driver didn't stop the card from working.

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Fedora Networking :: Wireless Connection Has Begun Dropping Every Few Hours And Not Reconnecting ?

Mar 9, 2010

I have a Dell Inspiron 6000 laptop running Fedora 12. Recently my wireless connection has begun dropping every few hours and not reconnecting. After trying for about 30-45 seconds, the WPA password prompt comes up but still doesn't connect.

Fedora release 12 (Constantine)
Kernel Linux 2.6.32.9-67.fc12.i686
GNOME 2.28.2
Memory: 2.0 GB
Processor: Intel Pentium R 1.60 GHz

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Fedora :: 11 With Monitor - System - Preferences - Display Shows Unknown Monitor

Oct 16, 2009

I am facing problem with the fresh installation of Fedora 11. (I have moved from Fedora 9). When I try to view videos on ..... or use the Cheese Webcam Booth, I get blurred lines on the screen and I am unable to see any video or pic.

Also I noticed that the when i go to System > Preferences>Display, it shows me UNKOWN MONIOR.

However, if I got to System>Administration>Display and enter the su password, it shows me correct monitor and the graphics driver.

I am not sure if my original is related to the Unknown Monitor.

I also tried to install Nvidia driver but it crashed the xserver and I had remove the driver.

My Monitor is LG 700E and Graphics card is from intel. as I am not able watch any video.

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Fedora :: External Monitor Won't Work - Both Monitor And Laptop Screen Black

Aug 7, 2011

I am having problems getting my external monitor to work. When I plug in the monitor, both the laptop screen and the external monitor go black. When I unplug the monitor, the laptop screen works again.
When I startup with the external monitor plugged in, neither screen works or teh computer hangs or something.

I have had the external monitor going on a couple of occasions. I did manage to configure my monitors through System Settings > Display. I turned off the laptop monitor as I just want to use the external. But after rebooting, things didn't work.

I have a Thinkpad E420, Fedora 15

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Fedora :: Set Totem Player To Open In External Monitor And Not In Built-in Monitor

Aug 11, 2011

I have an external monitor connected to my laptop (extended display). I always drag the Totem player from the laptop screen to external monitor to watch video files. I wonder, if the Totem player can be set to open in the external monitor automatically, everytime I open it?

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Fedora Hardware :: External Monitor Not Detected - Dell Laptop - Monitor

Aug 17, 2011

My software and hardware information are as follows. I have Fedora 12 and KDE 4.4.5 installed on a Dell Vostro 1500 laptop. I believe it's a 64 bit processor; it's an Intel Core 2 Duo CPU. The external monitor is a Dell as well.

My problem is that my system does not seem to be detecting an external monitor that I have connected. Everything else is working just fine; however, I would like to have the option of attaching an external monitor. When I plug the external monitor into the laptop, the external monitor remains black and appears to be in power save mode. The results of xrandr -q (with or without the external monitor attached: it doesn't appear to change) are as follows.

Code:

How can I get my laptop to recognize that the external monitor is even connected? Let me know if I can be more specific or provide additional details.

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Fedora :: F14 Dual Monitor - Firefox Starts On Wrong Monitor

Jan 27, 2011

I just upgrade to F14 from F10 on a dual montor setup. Firefox behaives differently on F14 than on F10.
On F10 it followed the mouse pointer's location and show up on the correct monitor

When maximized at close, it is always displayed on the left monitor. When not maximized at close it will open on the monitor where the mouse pointer is located.

About minimize/maximize Firefoxe before closing and it seems to work in some case, but not for me.

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OpenSUSE Network :: Appropriate Directories To Monitor For Pci Compliance

Apr 19, 2011

There is no "security" forum so I figured I'd post this here.

Because of PCI compliance requirements, we are going to begin using the built-in audit utility that comes with SuSE to monitor file/directory changes. The utility comes pre-configured to monitor many system files but I was curious as if there is a standard list of files/folders that should be monitored for PCI compliance? I've scanned the web but haven't come across anything yet.

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General :: Monitor Network Traffic Of Each Application?

Jan 22, 2010

I am on a slow Internet connection and it really makes me mad if something gets downloaded in background (like automatic update of any software) without my knowledge.

How can I monitor my network traffic sorted according to the "which binary file is using how much"? I can find the total transfer rate in "System Monitor" in Gnome, but what if I want to find for individual process. There are softwares like netmonitor in Windows, but how can I achieve that in UBUNTU LINUX.

GUI application will be nice, command line software will also be fine..

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Ubuntu Networking :: Monitor Network Traffic ?

Jan 20, 2011

Is there an easy way to monitor network traffic? I want to make sure my kids are surfing safe...

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General :: How To Monitor / Intercept All Network Comms On PC

Dec 6, 2010

I want to write a program that intercepts in real-time all network comms of whatever protocol that goes through eth0 (in and out) on my box. What do I need to take into account and where can I get necessary info? Pointers to samples & algorithms would be most welcome. There must be a standard way to access/use eth0, but I can't find.

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Server :: Using Orion Snmp Monitor In Network?

Mar 27, 2010

I am using orion snmp monitor in my network and I have no problem with windows systems but linux systems have some problem first of all snmp monitor shows cpu load on 100% all the time that is completely wrong and secong my snmp monitor can just show cpu and memory and response time information of linux systems and not disk information and nothing more. this is my /etc/snmp/snmpd.conf file content:

com2sec paranoid default public
group MyROSystem v1 paranoid
group MyROSystem v2c paranoid
group MyROSystem usm paranoid
group MyROGroup v1 readonly

[Code]....

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