Ubuntu Networking :: Resolve/general Connection Errors Under 11.04?
May 28, 2011
I have a Lenovo Thinkpad SL510, with a "Realtek RTL8188CE 802.11b/g/n WiFi Adapter (rev 01)" wireless adapter, on Ubuntu 11.04 x64. When I run updates, I get many resolve errors "Something wicked happened resolving us.archive.ubuntu.com," and other errors like that.Also, the internet connection runs incredibly slowly, and a lot of my downloads through firefox freeze and fail. I'm wondering if all of these problems are connected. Here are the contents of /etc/resolv.conf
Code:
domain gateway.2wire.net
search gateway.2wire.net
[code]....
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Mar 22, 2011
Say if I want to install openssh in traditional way with ./configure then make and make install which works fine in Fedora but not in Ubuntu as it gives error for a Mailer program when ran ./configure, as sendmail is by default installed in Fedora but not in Ubuntu. What I need to know is how yum/apt-get resolve this dependency problem? Is there any file in the OS where it's listed all the dependencies along with the package names like in Redhat installation CD there are some XML files where it lists all the packages along with their dependencies.
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Mar 10, 2010
I'm trying to troubleshoot some strange networking problems. The pattern seems to be that only newer distributions are affected. CentOS 5.4 and Ubuntu 8.04 work fine out-of-the-box. But Arch, Sidux, AntiX, Fedora, etc. show the same pattern of errors.Certain websites cannot be found unless I disable ipv6 in Firefox. And certain addresses cannot be resolved using various terminal commands (wget, apt-get, yum, etc.). What I would ideally like is a permanent solution, perhaps changing some settings on my router, so that I don't have to deal with this each time I test-drive a new distro. I have a hunch the issue has something to do with my DSL provider (Fairpoint) filing for bankruptcy.
One more piece of information that may or may not be relevant: I recently switched a website from one hosting company to another. I noticed there was a delay of several days where I saw the old version at the old host, but viewing the site at a friend's house or the coffee shop showed the new site on the new host. This leads me to suspect DNS issues perhaps, but this is not an area of expertise.
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Mar 31, 2011
actually i am new for this forum and for Linux also. i am using redhat enterprise Linux 5 its not licensed. i am having so much dependency issues is there any way by using which i can resolve dependencies. and i am already made repository. but till i am facing the same issue for any rpm.
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May 13, 2010
Two weeks ago I decided to ditch my XP install completely and switch to Ubuntu 10.04. So far so good, and I'm very happy with my decision. However, about 3 days ago, my wired connection started playing up. It keeps dropping out every 2 hours or so between 13.00 and 04.00. After dropping out, it immediately reconnects again (at least when I use Automatically DCHP config). From 04.00 to 13.00 it is more or less stable.
I tried resolving by reserving an IP in the DCHP Client Table in my router (linksys WRT120N). Additionally, I told the Network Manager to use the Manual configuration. Unfortunately these changes didn't help and the problems stay the same......
The daemon.log shows the following information code...
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Jul 25, 2010
Code...
connection is set to connect automatically using dhcp... used to work, after a latest updates basically stopped working.
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Jun 22, 2010
I have a Webserver (Co-Location) and all runs fine ... since last week. Now there are a lot of RX-ERR shown in netstat and ifconfig. And when I try to upload a external website direct on the server for example via wget, it is very very slow and hangs very often.
RX packets:2919694 errors:990386 dropped:0 overruns:0 frame:596420
TX packets:4231423 errors:0 dropped:0 overruns:0 carrier:0
I have analyse the network but I was not able to find a problem. My hoster has checked the network and all looks fine. For example my hoster has plugged-in a pc in the same switch ... and was able to do wget (load external data, like websites) in normal speed.
Since last week my websites were delivered slower as before, too. It seemed there is a network-problem ... but how can I find it?
Actually I can install moduls ... but the server needs hours. So, if you knows a good command-line tool to analyse the network.
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Apr 26, 2011
We have a Debian Linux Server with Samba setup. It connects to our lab computers each night to pull new data over. It's worked great for several years. Over the last month or two it has randomly been getting Samba errors (13663, 13668, 13673, 13683, 13693, etc). I don't know if those numbers mean anything because they are all different. Usually after rebooting it would be fixed, but it seems to be getting more frequent.
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Oct 10, 2010
I installed Vista in VirtualBox 2 days ago and all has been well since. However I just started VB tonight and although it started up ok, when I clicked on Start (Vista) I get the following pop-ups.
Although one of the errors appears to say what I should do, I don't understand it
Could somebody tell me what I need to do to fix it please? Preferably in English
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Aug 21, 2011
I've had a lot of success over the past year with Ubuntu 10.4; however, recently I've been experiencing nothing but problems. It all started with an upgrade a month ago that caused me to experience a boot error. Now every time I re-install the system, I will have a random boot error. I have been trying to install the system on a friend's computer and getting the same thing. I've tried a different download and burned different discs, but I am still experiencing problems with the system having a boot error. Sometimes it is immediate after installation and other times it might boot fine for a day or two and then suddenly it will no longer boot. Is there some kind of bug with 10.4 now? I never, never had this hard of a time with Ubuntu. I've installed it on several computers for myself and other people.
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Jun 17, 2010
how to resolve this errors when akonadi starts. Uploaded with ImageShack.us
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Jul 14, 2009
I can get all of the 32 bit packages installed just fine, but when I run ./configure I get the following errors:
[code]...
how to resolve these errors.
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Mar 28, 2011
I recently installed the pptpd server on my system and set it up according to these instructions:HTML Code[URL]t=132029However after setting everything up on attempting to connect to it from a windows machine (windows 7 home premium to be specific) it gives me two errors which are 720 and 800...It reaches "registering your computer on the network" fine and then gives 720 on the first attempt to connect and then 800 on the second attempt to connect...and then on the third 720 and 4th 800 and so on..My system running the server's I.P is 192.168.1.70My system running the windows OS trying to connects I.P is: 192.168.1.66
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Aug 8, 2010
After rebooting, I found that the server couldn't see the network. The machine has dual gigabit ethernet (eth0 and eth1). eth0 is connected to the internet, but disappeared. ifconfig used to show eth0, eth1, and lo, but now only shows eth1 and lo. If I boot into rescue mode I can get internet and ifconfig returns eth0 and lo. Any ideas on how to fix this?
I apologize in advance if I ask any noob questions. I'm not a very experienced Linux user.
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Aug 21, 2010
I'm using Debian-Squeeze, and the command "uname -a" results in "Linux debian 2.6.32-5-amd64 #1 SMP Sat Jul 24 01:47:24 UTC 2010 x86_64 GNU/Linux". The desktop environment is Gnome 2.30.2.
My problem is wireless connection causes the system to crash. Here is the detail: my university uses a WiFi service that we have to enter our ID and password in a certain web page in the browser to get access to the Internet, while the WiFi signal is automatically picked up. My laptop crashes each time I connecting to such wireless network. But back home, when connecting to my own WiFi, everything is all right.
As the only thing I can do when such crash happens is to press the power button to force the computer to shut down, I've gathered no more information till now.
Does anyone know what's wrong and how to fix it?
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Oct 21, 2010
I've installed TurboVNC and also libjpeg-turbo on Centos 5 to view a Windows computer. I previously have been using TightVNC and it worked great. When I connect to the server using vncviewer, it will only occasionally refresh the image, like when I change a browser window to full screen.
I selected to have a log file and debugging on the server, but I haven't been able to find the file. code...
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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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May 31, 2011
I got an update notification from update manager just now and tried to update (internet working perfectly) but before it finishes downloading it gives an error of "check internet connection" constantly
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Sep 16, 2010
I'm unable to install this package, tuxpaint.I get errors in that it cannot reach the proper url or connection to the server?Not sure what I'm doing wrong.I figure the repo is correct and I thought I had the proper source since I've installed other packages.What could be wrong?
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Apr 2, 2011
I have been getting these errors while running update manager and I can't seem to find specific information or how to resolve these problems. Was hoping someone could please provide me with some details about why they are occurring so I can deal with them myself next time and how I can go about fixing them now.
Quote:
W: Failed to fetch http://mirror.pacific.net.au/linux/u...ic/Release.gpg Could not connect to mirror.pacific.net.au:80 (61.8.0.17), connection timed out
W: Failed to fetch http://mirror.pacific.net.au/linux/u...tion-en_GB.bz2 Unable to connect to mirror.pacific.net.au http:
[code]....
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Apr 1, 2011
I'm currently running 11.3 and decided I'd try upgrading to 11.4 following the instructions here: SDB:System upgrade - openSUSEUnfortunately, my attempts are defeated at the point of trying to refresh the new repos; I get the following message (for the oss repo, in this case):
Download (curl) error for 'url':
Error code: Connection failed
Error message: Couldn't resolve host 'download.opensuse.org'
With 11.4 replaced by 11.3 in the repo url, it refreshes just fine. The only repository that works when I change 11.3 to 11.4 is the Packman repo. I'm not really sure why the connection fails for 11.4 but not 11.3!
Further info: I have an old router with no IPv6 support, but have IPv6 disabled system-wide. I can enter the url for the repositories into firefox and they come up just fine - it's only with zypper/YaST that I get the above error message.I also tried upgrading using the network CD but ran into the same sort of problem. In this case it may be because the CD installer doesn't disable IPv6. (I didn't want to download the DVD at my connection speed, and the KDE live CD is not listed as suitable for upgrade).
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Feb 22, 2011
I have a machine running with slackware64 13.1 and vnc servers is installed on it. It worked for months until yesterday, when I couldnt connect to the machine remotely.
I have 2 vnc "users" on this machine, root and "user". Each have their own desktop. Root has desktop :1 and user had desktop :2. Simple enough.
VNC servers is started via /etc/rc.d/rc.local with the command:
Code:
Code:
It worked flawlessly. I use the very same configuration on my home server, never had a glitch.
From the "distant" machine, I get this error when I try to connect:
Code:
Unable to connect to VNC server
What has changed so it no longer works? I assume its not a network problem since the machines are all located in my home network and there is no firewall or router in between them.
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Jul 22, 2010
Can anybody tell me what kind of fsck errors are found on a system?
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Apr 3, 2011
I'm trying to create a PAN (Personal Area Network) using a laptop (Siragon ML-1040) and my desktop computer, but I get the Connection Refused (111) error.
Blueman doesn't detect any network service between the two computers unless I start PAND on one of them and then it detects the NAP service. That, only after I enable the NAP/Workgroup services on the Services submenu in Blueman. However, it doesn't work neither with the NM plugins or without them (dhclient and that other one I can't remember the name of).
Any clues over here? I'm using pand 4.91 and blueman.
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Jan 24, 2010
Its a case of ".... wireless network connection active but still not internet connection .."I am using WEP - 128 key ... Works when I connect directly using ethernet cable ... but not wireless (pci and wireless router)
ubuadmin@ubucomputer:~$ ifconfig
wlan0 Link encap:Ethernet HWaddr 00:06:25:12:83:3b
inet addr:192.168.1.10 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: fe80::206:25ff:fe12:833b/64 Scope:Link[code].....
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Jul 28, 2010
I'm trying to do a SSH connection between my home and work PC both machines are running ubuntu 10.04. I have read all the comunity documentation at [URL] from Work PC. I went on to the web site what is my ip address and noted down the number, From Home i opened a terminal and typed: pnig (ip address). to which their was no reply, now i'm assuming i need to configure the works router to except connection requests, is this Correct?
Also what information do i need from my works network and how do i get it? I understand that I need the routers expernal ip address, but how do i referiance a specified computer after that address? What program do i use in ubunu and how is that information applied to it?
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Jun 11, 2011
My problem is exactly the same as [URL]
but I am stuck at the last hurdle
here are the output of the command that helped to solve the case in the previous post:
ifconfig wlan0
wlan0 Link encap:Ethernet HWaddr 00:1b:77:d2:59:55
inet6 addr: fe80::21b:77ff:fed2:5955/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
[Code].....
I have also tried sudo dhclient but it hasn't helped and I am still unable to connect to the internet
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Apr 29, 2010
I'm having an issue where some of my machines hostnames are no longer able to be resolved after setting up a mythbuntu backend to allow netboot. Also it seems that which machines hostnames get resolved is not consistent. (ie sometimes one gets resolved and sometimes it doesn't) I suspect that it has something to do with the changes I made to "/etc/ltsp/dhcpd.conf" to get the netboot running.
I have a Verizon DSL modem/router as 192.168.1.1. Up until playing with the "/etc/ltsp/dhcpd.conf" I saw hostnames of all of my machines show up in its network map. Now, some of my machines still get network access but their hostnames are no longer resolved. What did I do wrong? Here is my dhcpd.conf file:
Code:
# Default LTSP dhcpd.conf config file.
authoritative;
subnet 192.168.1.0 netmask 255.255.255.0 {
range 192.168.1.2 192.168.1.250;
[Code]...
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Sep 16, 2010
A while ago I downloaded a VMWare VM for 7.10. I then upgraded it to 8.10 and it was working just fine. I just did the upgrade to 10.04 and I'm having problems with my networking. The really odd thing is that I can ping machines on my local network and out on the Internet by IP address but it will not resolve names using DNS.
I've got the network set up for DHCP. I also tried DHCP address only and manually entered my DNS server addresses but still no luck on resolving names with DNS. At the end of the day, I don't really care if I get this fixed or just get a new VMWare VM. (I can't create one because I only have the player.)
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Feb 22, 2010
I',m executing ping, but it didn't work, in order to find the mistake in my network I would like to know how to see the errors:
Code:
18 packets transmitted, 0 received, +12 errors, 100% packet loss, time 17038ms, pipe 4 I want to see this +12 errors. Could I do that?
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