Ubuntu Networking :: Hang On Reboot When Connected To NFS/ldap Server Via Wireless

Jun 18, 2010

School with linux running on students' laptops, connecting via wlan to a Debian NFS and LDAP server. Every student logs on his/her profile residing on the NFS server.The clients are set up with autofs. Earlier, I had set up the wireless network in /etc/network/interfaces, but this time I decided to configure network manager so as to bring up both wireless and wired network before logon. This setup has been working on for the last fire or five years with only minor changes. Also worked with Karmic Koala, but still with the interfaces file instead of networkmanager. The Vostro is also new here, we've previously used mostly Dell Latitude D505s.

So here is what works:

1: Clients can log on to LDAP and NFS servers both wired and wirelessly. Everything is smooth.

2: While on LAN, shutdown and restart works flawlessly (and quick as a breeze, I'm really impressed by startup/restart/shutdown times, under 25 secs!).

3: Shutdown and restart also works wirelessly when doing it either from a local account or from the GDM chooser.

What doesn't work, however, is shutting down or restarting directly from a networked account connected while only being connected over the wireless network. This is what's being displayed on the terminal after it has tried tho shut down for a while:


The system is going down for halt NOW!

acpid: exiting
init: cron main process (1011) killed by TERM signal.
init: tty1 main process (1365) killed by TERM signal.


If I try ctrl-alt-del at this stage, it says:

"init: rc main process (3030) killed by TERM signal"

"Checking for running unattended-upgrades: "

And then it will hang again, until I hold the powerbutton for some seconds. The unattended-upgrades part is what seems to be the culprit. I suspect it is about the wireless network not being connected any longer or something like that, but I'm not sure about how to go about debugging shutdown scripts here. I'd be grateful for pointers. I will try and see how it goes with the old interfaces file setup, but I'd rather make nm work.

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Ubuntu Networking :: Says Wireless Is Connected But Cannot Find Server

Mar 1, 2011

Just installed ubuntu 10.04 on my Dell inspiron 1525 laptop. Everything got installed right, and I elected to select the sta driver rather than the B43 driver. After restarting, the b43 option disappeared. The wireless said it connected, but when i went to firefox it wouldn't load and said server not found. My wireless card is a bcm4312. Any ideas as to why this is not working?

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Networking :: LDAP Configuration Error - Can't Connect To LDAP Server -1

May 31, 2010

I'm trying to set up a Linux server and I am new to this. I have gone through most of the configuration using SAMBA 3.0 and when I populate the ldap directory all I get this error before the password request:

Then when I perform an ldapsearch to see if the directory is populated I get this message:

I'm positive all my .conf files are done right.

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Ubuntu Networking :: NFS Mounts Cause A Hang On Reboot Of The Mounts Are Lost

Nov 24, 2010

I have multiple ubuntu machines and I connect to one through an NFS share. I have done this for a few years without issue. However, since re-installing ubuntu and upgrading to 10.4 I have a problem with my system hanging when the remote shares are lost.

Basically, I can power down the machine downstairs, and my main machine then has a fit. I can not open any folders in ubuntu, nor can I shut down. If I try and shut down the system hangs, last time it hung for 8 hours before I had to kill the power.

These are the lines in my fstab

I don't know what I've done wrong, or how I can prevent this from hanging. I have googled the heck out of this as well and can't seem to find an answer either.

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Ubuntu Networking :: System Hang When Using Intel Pro/Wireless 2915ABG On 10.10

Dec 16, 2010

My system hangs within a few minutes after I turn on the Intel Pro/Wireless 2915ABG interface built into my motherboard or if I boot with the interface turned on. I have been having this problem for a couple of years and tried to fix it myself from time to time. (I think that I even asked for help in the Forum once.) The wireless interface used to work fine with Ubuntu and I kept hoping that the problem would "magically" disappear with each upgrade. I also read about the recent problems with ndiswrapper and similar interfaces. But this doesn't seem to be my problem. The entries in /var/log/messages just prior to the last hang were

Dec 15 09:09:47 periwinkle rsyslogd: [origin software="rsyslogd" swVersion="4.2.0" x-pid="824" x-info="http://www.rsyslog.com"] rsyslogd was HUPed, type 'lightweight'.
Dec 15 09:09:47 periwinkle rsyslogd: [origin software="rsyslogd" swVersion="4.2.0"


I don't know what process gdb was trying to trace. Since I was testing the system, I was only running Firefox, which has always triggered the problem. The output from "dmesg | grep -e ndis -e ipw" was

[ 19.121563] libipw: 802.11 data/management/control stack, git-1.1.13
[ 19.121566] libipw: Copyright (C) 2004-2005 Intel Corporation <jketreno@linux.intel.com>
[ 19.161180] ipw2200: Intel(R) PRO/Wireless 2200/2915 Network Driver, 1.2.2kmprq


In previous version of Ubuntu, the messages just before the hang used to complain about the firmware in the interface being buggy. I intended to send the output from iwconfig and "sudo iwlist eth1 scan" as well. But I can't turn on the interface without hanging the system and thereby destroying this post.

I just upgraded from the 64-bit version of Ubuntu 10.4 to 10.10 over the network using the Update Manager. But when I chose the "About Ubuntu" option from the System menu, I was surprised to see it say that I am running Natty Narwhal 11.4. My system is a Linux Certified LC2464T [URL]

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Server :: Openldap Client Fails To Connect Ldap Server 'ldap_bind - Can't Contact LDAP Server

Sep 28, 2010

Just installed openldap server on a VM CentOS called 'ldapsrv', it works fine, ldapsearch returns all ldap information.

Installed openldap client on another VM CentOS called 'ldapclient1', configured it with most basic configuration, no ssl/tls etc. but ldapsearch returns error:

ldapsrv is pingable:

Some outputs:

PHP Code:

PHP Code:

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OpenSUSE Network :: Setup A LDAP Server Using The Yast-LDAP Server Configuration Tool

May 31, 2010

we have a weird problem with our opensuse 11.2 server installation.

We want to set up a LDAP Server using the Yast-LDAP Server configuriation tool.

This indeed already worked weeks ago until....this week.
Maybe some updates??!

I do not know what happend exactly. The server just does not want to start again and throws following error:

Starting ldap-serverstartproc: exit status of parent of /usr/lib/openldap/slapd: 1 failed

This happend after a little check of the configuration, but without a change, with Yast. Google delivered only "reinstall your box"-answers.

So.. i did that. And now the "mystical" part: The SAME ERROR occurs with a fresh vanilla system with a brand new and simple configuration (certificats, database, pw...the first Yast config dialog...). I did not change the way i set it up.

I remember, when i did this the first time with 11.2 on that machine, when no problems occured...everything was running out of the box (except the "use commen server certificate" option...).

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Ubuntu Servers :: 10.4.1 Hang On Reboot After Mounting LVM Volume

Jan 4, 2011

I added another disk in server and create mount point in fstab:
/dev/VolGroup00/LogVol00 /opt ext3 defaults 1 2
Everything is working perfect... halt, boot, system... but when I wanna to reboot with a command sudo reboot, it hangs at the end of all initialization when it's rebooting and some number. If I remove disk in fstab, than reboot working.

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Ubuntu Networking :: Wireless, Saying Connected But It Isn't?

Oct 30, 2010

After being a windows *** all my life I've finally taken the decision to start using Linux for real.

So I bought a entire new laptop for the task and it landed on a Acer eMachine 350.

Trouble here trouble there I finally came down to a ubuntu netbook edition, the latest one for the moment.

I had to use jockey-gtk to install drivers to my broadcom network card which took a while, but it now says I have a driver!

Trouble is, when I connect to my WLAN at home it says connected to Gustafsson(Network name) but my interface eth1 looks like this:

eth0 Link encap:Ethernet HWaddr 88:ae:1d:5f:e8:b4
inet addr: Bcast: Mask:
inet6 addr: fe80::8aae:1dff:fe5f:e8b4/64 Scope:Link

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Slackware :: Hang On 'Restarting System' While Using Reboot

May 1, 2011

fairly new to linux and tried Slack as a way to force myself to learn. I am running current and when i issue the reboot command it will hang on "Restarting system". If i use the shutdown -r now command it will reboot fine. Any ideas?

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Ubuntu Networking :: Wireless Not Staying Connected

Feb 18, 2010

My mom has ubuntu 8.04.2, and it does not stay connected on the wireless usb cards. I tried 2 different ones, 1 azio and 1 is something else. But both get connected, but they die out after awhile. I am at work typing this, so I will probably try to move my router up higher or something, but it is weird it cuts out like every 15-30 minutes, and it starts at like 4 bars.

She is running it out of a live DVD( I Know, you shouldnt use a DVD as your main OS) but she only needs the internet, and uses google docs to save stuff or a USB stick. Anyone know what might be the cause of this disturbance in the connection. It is a cable connection, and the main modem is in my room, and we got a netgear router( maybe the problem?). I tried the same exact system/live dvd environment at my work place and it held connection pretty good, but I believe it did disconnect a few times as well.

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Ubuntu Networking :: Connected To Wireless But No Internet

Nov 7, 2010

Im using a laptop with a wireless card inside it is a Realtek RTL8187B network adaptor. I go to wireless connections in the toolbar at the top of the screen and click on my internet modem and it says its connected. So I go to firefox and it brings up google. I try and do a search and it says something and at the bottom of the page it displays a button that says "Try Again". Im booting ubuntu from the cd drive so its not installed on my computer what should i be trying?

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Ubuntu Networking :: Wireless Connected But No Internet?

Jan 11, 2011

I have an old GX 159 Dell Desktop I tried to install Ubuntu 10.10 on it and it worked like charm the problem is when I connect my Alfa 1 wireless adapter and connect to the network it won't let me connect to the internet. Well I have been succeeded to connect to the weather center, but I can't update or open the Internet even if I have been able to open Hotmail.com after 2 minutes it won't open anything after that

Note: I didn't install the driver for adapter and I don't know how to do it because I tried before and I failed adding I used it on more than one distro. By the way it works perfect on Windows?

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Ubuntu Networking :: Wireless Connected But No DHCP

Mar 6, 2011

I had the wrong WPA password.[/blush] It appeared to me that it was connected OK at the physical/datalink level but apparently that was not the case.I've set up an old PC with the latest Ubuntu desktop and am trying to set up wireless networking with a TP-Link TL-WN722N. It only came with Windows drivers but from a thread elsewhere I got it to where it finds my router and connects with the password. However, it doesn't pick up its IP details. The router is working fine wirelessly on my phone and wirefully on my other PC.

I've edited /etc/network/interfaces with "auto wlan0" and "iface wlan0 inet dhcp" but after restart the wlan0 interface has no IP details. Originally the interface had IPv6 details but I cleared that with ifconfig. Under the Network Connections Wireless tab it has "Auto" followed by the name of my wireless connection so it appears to have connected OK. Now when I click Edit for that connection nmame, the IPv6 tab says Ignore and IPv4 says Automatic (DHCP) but Addresses is greyed out and the other fields are all empty.

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Ubuntu Networking :: Getting Wireless Connected In Backtrack3?

Jun 7, 2011

i am running backtrack3 with vmware station in window 7. but the problem is when i enter iwconfig it does not show my alpha awus036h. it does not detect my alpha card. if anybody can help me regarding the same???
i have already tried to set it in vmware station menu bar vm=>removable devices to get my wireless but it showing a usb device connected... not showing my wireless..

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Ubuntu Networking :: Wireless Not Staying Connected?

Sep 1, 2011

I have Hughesnet (which sucks by the way, don't get it, I hate contracts). The FAP states that i can only download 375MB or it shuts me down, however, from 2 to 7 AM you can download all you want. so naturally i use a download scheduler. The only problem is that at night when i shut my laptop lid it disconnects from my router.

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Debian :: Hang On Shutdown / Reboot - KVM Hardware Virtualization

Aug 25, 2015

Every shutdown/reboot always hangs on

Code: Select allkvm: exiting hardware virtualization

I have tried rebooting/shutting down with

Code: Select allshutdown -h now
shutdown -r now
init 0
init 6

And all hang on the same line. This is 100% reproducible. I am not actually running a virtual machine. I don't have qemu-kvm installed. I do have separate partitions on my system. I have a /boot, /, swap, and /home partition.

From looking at other posts: [URL] .....

Solutions tend to be across the board: not unmounting properly, acpi settings in grub, using a different shutdown command.

My fstab file is:

Code: Select all# /etc/fstab: static file system information.
# Use 'blkid' to print the universally unique identifier for a
# device; this may be used with UUID= as a more robust way to name devices
# that works even if disks are added and removed. See fstab(5).
# <file system> <mount point>   <type>  <options>       <dump>  <pass>
# / was on /dev/sda2 during installation

[Code] ....

and the result of Code: Select allmount is

Code: Select allsysfs on /sys type sysfs (rw,nosuid,nodev,noexec,relatime)
proc on /proc type proc (rw,nosuid,nodev,noexec,relatime)
udev on /dev type devtmpfs (rw,relatime,size=10240k,nr_inodes=498135,mode=755)
devpts on /dev/pts type devpts (rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=000)
tmpfs on /run type tmpfs (rw,nosuid,relatime,size=800408k,mode=755)

[Code] ....

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Ubuntu Networking :: Wireless Network Detected But Not Getting Connected

Aug 15, 2010

I've installed Ubuntu 10.04 32 bit version(dual OS) on my 64 bit Pentium core2 duo 2.2GHz processor. Everything seems to be working fine except it's not getting connected to wireless network, although it's detected the network .It was working fine(got connected to wireless network) when I had installed the same OS via virtual machine.

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Ubuntu Networking :: Auto Switch Wireless Off When Lan Connected?

Aug 21, 2010

I currently have a command line Ubuntu 9.10 installation.

I wish to be able to have either both wireless and wired connection working

For example: when LAN is connection the wireless is switched off, when LAN is disconnected the wireless comes up (WPA2)

I know that the Network Manager in Gnome does this auto switching for you but I need to know how to do this in command line only.

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Ubuntu Networking :: Wireless Connected But Not At 'N' Rate (above 54Mbps)

Oct 14, 2010

I have a Linksys WUSB600N wireless adapter for my laptop which uses the rt2800usb drivers.My router:

Router Model: Linksys WRT150N v1.1
Firmware Version: DD-WRT v24-sp2 (07/22/09) mini - build 12548M NEWD Eko

The wireless usb adapter connects to my network, and the router is running on mixed mode, except that I cannot seem to get wireless 'n' connection speeds. Both are capable of wireless n. I check the connection info and it is always 54 Mbps. I have set the router wireless on N-only and I lose my connection.Is the standard driver for this usb adapter in Ubuntu 10.4 unable to utilize 'n' speeds?

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Ubuntu Networking :: 10.10: Connected To My Wireless Network, But No Internet?

Nov 9, 2010

I upgraded to 10.10 the day it came out, and haven't had any problems with internet stuff. My wireless card works without any proprietary drivers. Last night, the computer stopped connecting to the internet. I am still connected to my wifi network, but I can't do anything online. I had assumed that my internet connection was just down in general, and tried resetting the computer, shutting down the computer and then turning it on again, and rebooting the modem, but then my Xbox connected, and my laptop running 10.04 connected, so I'm confused as to what is going in. Any ideas?

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Ubuntu Networking :: 10.10 Won't Stay Connected To Wireless Internet?

Dec 27, 2010

I am running Ubuntu 10.10 on a Dell Dimension 4700 desktop computer. I just upgraded to 10.10 from the previous version after getting my D-Link wireless adapter back after loaning it out. My internet now won't stay connected. I can connect when I firstrn on the computer, with after 2-5 minutes it drops the connection and gives me the "Wireless Network Authentication Required" prompt. It won't connect again without unplugging the adapter and plugging it back in.I borrowed a Belkin wirelss adapter to try it, and it does the exact same thing. PLEASE can someone help me, I really need the internet up on the computer(Also, when I first got the adapter-- while running the old version of Ubuntu-- it would not recognize or connect at all and I spent 4 hours messing with drivers and settings to get it to work, which it did flawlessly. Until I upgraded.)

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Ubuntu Networking :: Connected To Wireless But Cannot Browse Or Ping

Feb 1, 2011

I have a edimax USB wireless and as soon as I plugged it in it worked i.e., it is able to connect to a wireless.


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Ubuntu Networking :: Wireless Internet Not Staying Connected?

Feb 22, 2011

I've had ubuntu installed for a bit now and I want to start using it as my main OS, but the wireless internet will not stay connected. It will connect at first and if I'm lucky it will stay connected for around 15 - 20 minutes. I have a toshiba laptop with an AtherosAR5007EG internal network card.

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Ubuntu Networking :: 10.04 Wireless Connected But No Internet Access

Aug 26, 2011

I have installed ubuntu 10.04 and STA wireless driver. I am using a wimax modem, the wireless is connected (have IP addresses) but I do not have access to the internet.I also have installed a windows XP as a guest OS (ubuntu is the host) on vmware. By using a bridged network connection, I am able to access internet. So I guess the problem is related to the ubuntu wireless driver.

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Programming :: Ubuntu Hardy - Php-ldap - Can't Contact LDAP Server

Nov 28, 2008

I'm checking with a sniffer and there's activity going on between the client and the LDAP server... as a matter of fact, the sniffer shows that the search is producing one ldap item, however, php says it can't contact the ldap server (after it has bound and everything):

The script is working beautifully on another host with debian.

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CentOS 5 :: Reboot Hang - Blank Screen Blinking Cursor?

Aug 19, 2009

This is probably not possible, but just wondering, restarted centos 5.2 remotely, hung at shutdown, kvm'ed to see what was hanging it up, control c'ed and then ctl alt del, just trying to kill the process, was brought back to the login screen, but unable to type anything. Alt-f1 switched to a different virtual console, which was just a blank screen and a blinking cursor, but now able to type things. Want to avoid hard shutdown. Is there anyway to force shutdown/reboot the machine from this console?

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Fedora Networking :: Connected To Wireless But No Internet

Sep 3, 2011

I installed Fedora 15 today and after a few very long hours finally got the broadcom driver to work and my laptop is now connected to my router. Yay! But now when I try going to a website in firefox it says server not found. I can ping anything inside my network but when I try to ping outside the network, for example google, it says ping: unknown host google.com. So I thought it might be a DNS problem but the network settings point to the router for DNS so I'm not sure what else could be wrong. All of the other settings look correct.

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Networking :: Get Connected To A Wireless Network That Only Allows DHCP?

Jan 16, 2009

I have a WET54g bridge that I am trying to get connected to a wireless network that only allows DHCP. The idea behind it is that I would like to connect the Cat6 out of the bridge to a switch allowing multiple wired computers to connect to the wireless network. The bridge will easily connect to the network once I put the WEP key in, however, there is a kink after that. When I connect the Cat6 to my computer and request an IP for that computer, it self assigns. This tells me that it is not talking to the wireless network through the bridge.

I can not find which IP address the bridge was assigned so that I can talk to it. The sub net is which leaves quite a few possibilities. I know that the bridge is, however talking to the wireless network because the light is steady on the front of it which indicates just that. One other thing to stack on is that I know that there is a "splash page" which comes up when any computer connects. You click on the agreement and then you are allowed onto the network. How can I get my computer to talk through the bridge to the wireless network?

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Ubuntu Networking :: Wireless Shows As Connected But Won't Load Any Sites?

Jan 6, 2010

I'm new to Ubuntu and i set up my wireless myself and I think I may have put in wrong settings. I looked through the forum and found these commands to put in the terminal from other posts. Could someone please see if they can fathom what I've done wrong. I have an wG111v2 netgear usb which works fine in windows but is very sluggish on Ubuntu. It worked for a while but since i have deleted and reinstalled my wireless numerous times I now can't get iternet at all. I have Ubuntu 9.10 on my machine which I duel boot with winXP.

ayte@kaytesRocket:~$ sudo dhclient wlan0
[sudo] password for kayte:
There is already a pid file /var/run/dhclient.pid with pid 1927
killed old client process, removed PID file
Internet Systems Consortium DHCP Client V3.1.2
Copyright 2004-2008 Internet Systems Consortium.
All rights reserved.


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