Ubuntu Networking :: Refresh Network After Power Failure On Laptop?

Apr 24, 2010

have Karmic Coala runing on an IBM thinkpad X.41. Works great. My home network is all ethernet so I have a router , CAT5 cable to laptop.A coupleof times I've had power outages The laptop carries on as it's on battery power. When the power comes back , the router restarts, it reconnects after a few minutes but the laptop doesn't reconnect to the network seamlessly. On some other Linux distro's I've had running /etc/init.d/network restart will refresh everything. On Ubuntu I have /etc/init.d/networks but running restart In the end I needed to reboot the laptop to get the network back on.Perhaps this is a power management issue with the laptop ethernet card i.e losing power powers down the card and it never comes back up properly.

View 2 Replies


ADVERTISEMENT

Debian :: Intermittent Network Failure On Laptop

Oct 12, 2010

I'm having intermittent network failure on my laptop but I can't figure out why. I have a cable modem and a 10Mb/s (bits) connection (at least that's what I'm paying for). The modem is connected to a wireless router, to which my laptop connects wirelessly. Quite often my speed drops considerably-- sometimes as low as a few hundred bytes per second. Other times it fails completely. This will happen with just about any server you can imagine, including the Debian FTP mirrors in the US.

- When I do file transfers over the local network from my laptop to my desktop, they go pretty fast, around 2 MB/s. I believe my wireless card (Intel 3495) maxes out at 3 MB/s (bytes), so that seems reasonable.
- When I download a file from the outside network, it usually goes pretty fast too, around 1 MB/s, which is close to my limit.

So why is it that the connection between the laptop and the external network is so slow? I've tried power cycling, but it doesn't really help. I can't think of anything else to try.

View 14 Replies View Related

Ubuntu Networking :: Automatically 'redial' ADSL Connection After Power Failure?

May 4, 2010

I use an ADSL connection which I 'dial' using the Network Manager. My laptop is connected to the modem through an ethernet cable.

The thing is the place where I stay is prone for power failure. So the modem goes out with the power. It comes back on within a minute when the power is restored but Network Manager doesn't seem to automatically re-establish the connection after it is lost once. I have to manually do it. Hence most of my downloads do not get done.

View 6 Replies View Related

Ubuntu Networking :: WiFi Disconnects After AC Power Is Unpluged From Laptop?

May 11, 2011

About 20 seconds after I unplug my Laptop from the AC adapter myiFi connection disconnects. The only way to get a connection again is to shut down my laptop and remove the battery and the AC adapter (WiFi-adapter reset) and reboot my laptop. I'm running 10.10 32-bit.lspci shows me these information about my WiFi-Adapter

02:00.0 Ethernet controller: Atheros Communications Inc. AR5001 Wireless Network Adapter (rev 01)
Subsystem: Device 1a3b:1026

[code]....

View 9 Replies View Related

Ubuntu Networking :: AT&T 2Wire Router Will Not Work Without Ac Power On Laptop?

Aug 1, 2011

I just installed 11.04 on my laptop and the wireless works fine connecting to a AT&T 2Wire router when the ac power adapter is connected. When running on battery power I stay connected to the router but barely any information is transmitted. ie. if i restart the router connection on my computer I can load a web page like google.com then nothing else will work unless I restart the connection again. If I am right next to the router it will continue to work but very slow ( takes about a minute to load ......com when it only takes 2 seconds on ac power ). When I run windows 7 everything works fine when on battery power.Also every thing works fine on a linksys router with ac and battery power.Dell Inspiron 14R Processor: i5-2400MWireless Card: Intel Centrino Wireless-N 1030Ubuntu 11.04 Natty Narwhal

View 1 Replies View Related

Ubuntu Networking :: Server, When Wake On Lan Is Preformed, Cannot Power Off Laptop?

Aug 1, 2011

I have just installed ubuntu server 10.04 LTS on a laptop, and I would like to control it remotely.When I manually turn on the computer I can successfully use SSH commands to turn it off. But when I wake on lan turn it on, it doesn't power off. It hangs on a black screen where the fan and the hard drive seem to be off, but the ethernet light is on and so are all the computer lights.

View 8 Replies View Related

Ubuntu Installation :: Power Failure While Upgrade From 9.10 To 10.04?

Aug 21, 2010

I was upgrading my ubuntu(9.10)/xp machine to ubuntu(10.4)/xp . but there was a power failure and was running in backup for 15 min. But after that the system shutdown automatically. Now when i boot, grub appears and after selecting the ubuntu partition i get a error saying cannot find device.

View 1 Replies View Related

Ubuntu :: Disk Corruption After Power Failure?

Jan 14, 2011

While using my computer the other day (I was sending an email) it suddenly turned off. I didn't get any low power warning, but I was running on battery and had my iphone charging from a USB port.

As I didn't think there was low battery, I just turned it back on again. As it was booting I saw the battery light flashing, indicating low power. I went to get the charger, but before I got it, mid boot-up it turned off again.

This seemingly damaged something hard-disk-wise.

Upon turning it on again it dropped into busy box with some message similar to this:

Quote:

No init fount. Try passing init= bootarg.

BusyBox v1.13.3 (Ubuntu 1:1.13.3-1ubuntu7) built in shell (ash) Enter 'help' for a list of build in commands

(initramfs)

That's not the actual message (copy pasted from another post) but the message is VERY similar to that.

If I "exit" busy box, I get a load of message about "kernel panic" before it freezes up.

I have booted a live USB (what I am using now). I thought since it wasn't cleanly unmounted, simply mounting and unmounting would do the trick. I was wrong.

Code:
ubuntu@ubuntu:~$ sudo fdisk -l
Disk /dev/sda: 250.1 GB, 250059350016 bytes
255 heads, 63 sectors/track, 30401 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

[Code].....

I had previously ran e2fsck (after checking it was unmounted) but it wouldn't run also because it was reporting that the device was already mounted, busy, or being exclusively used by a process.

I don't want to do any more for fear of causing further damage.

I am astounded that such damage can be caused so easily!

View 9 Replies View Related

Ubuntu :: 10.10 Won't Boot After Main Power Failure

Feb 11, 2011

Running 10.10 After a main power failure I can't boot.

It says:
...........
[sdb] Attached SCSI removable disk
[sdc] Attached SCSI removable disk
[sdd] Attached SCSI removable disk
[sde] Attached SCSI removable disk
and stops.

I get a (initramfs) prompt and have no idea what to do with it.

Allready tried to install 10.10 again from a CD. But it also hangs immediately when it starts to install. The liveCD feature works OK and I can access the hard disk. I tried to update the initramfs with the liveCD but it says I can't write since I have only "read-only" access. But if I do "sudo nautilus" I have full access to the disk.

View 9 Replies View Related

Ubuntu :: Cant Access External Usb After Power Failure

Jul 14, 2011

I have the old version 8.10 installed in my laptop. The laptop already some battery issue and after the power failure i cannot access the external usb drives anymore.I have ntfs-configuration installed and do not know how to access the drives using the tool.Every time i try to access the drive it says that i do not have the privilege to mount the volume.

View 1 Replies View Related

General :: Cant Boot After Power Failure?

Jan 6, 2010

I have a box running Lenny and boot with lilo. Today there was a power failure and now the system is stuck on Lilo ..It doesnt get passed that. I tried to boot in single mode but the same thing is happens. How can I fix this problem

View 3 Replies View Related

Ubuntu :: 10.04: File System Failure After Power Outage

Jun 8, 2010

I recently installed Lynx 10.04 amd64. Twice now, my entire file system has become unusable -- each time after a short power outage (2 seconds).

In the first setup, I had two primary partitions: 1) / that was ext4; 2) /home that was ext4.

In the second setup, I changed the /home to ext3.

Both times, after booting up following the power outage, I received a message saying that "serious errors" were found in /home. But, after several reboots, I was able to login and use the system. Then, some time later, I would started getting "Read Only" messages when trying to write to the file system.

fsck gave the following message: "/home terminated with status 4". I received numerous "I/O error" on sda messages.

My question: Is this vulnerability due to using ext4 or is it related more to something else in Lynx 10.04? Further, what can I do (other than buying a power backup device) to avoid my file system becoming unusable after a power outage?

View 5 Replies View Related

Ubuntu :: After Power Failure Boots Into Blank Screen

Jun 23, 2010

I'm using Ubuntu 10.04 64-bit, which is installed to a second hard drive on my desktop. Earlier this afternoon, there were two 10 second power outages in my neighborhood. The first caused the system to restart with no effect, but after the second outage Ubuntu no longer boots properly. The problem is this: When I boot, I get to the grub screen. I have tried choosing four different options (the most recent kernel, a slightly older kernel, and the recovery mode of each). For each, kernel begins loading, but at a certain point the input to the monitor dries up, and after a few seconds the monitor enters standby mode. When I boot into recovery mood, the last message I see before the screen goes blank includes "udev starting version 151" followed by three lines that read "assuming [something that I can't read before the screen goes blank]." The computer itself remains on, but I have no way of knowing exactly what it is doing.

There seems to be no hardware damage as I can boat into Vista, and I can also boot into 10.04 from a USB. I've used fsck to check the partitions on my hard drive and the test came up clean for all of them. Since I only installed 10.04 a week ago, I could just copy the handful of useful files I have to my external drive and re-install, but I'd like to get some experience troubleshooting this problem. My first assumption is some kind of problem with the video drivers or GUI.

View 2 Replies View Related

Ubuntu :: Desktop Crashed Due To Power Failure - Cant Boot 10.10?

Feb 12, 2011

today my desktop crashed due to power failure. When i again started the machine and tried to boot Ubuntu i m getting the following message in command screen:- "Minimal BASH-Like line editing is supported. For the first word, TAB lists possible command completions. Anywhere else TAB lists is possible device & file completions."

View 7 Replies View Related

Ubuntu :: Installation Crashed After Power Supply Failure

Mar 8, 2011

My pc had hardware malfunction; power supply interruption. At this moment it is working stable. My Windows 7 installation is ok but Ubuntu Maverick which I used during crush has malfunction. When I start to boot it looks like this: I had to make a foto so you all can see the problem. all my important files are stored on Ubuntu partition..

View 4 Replies View Related

Ubuntu :: Laptop Refresh Rate Stuck At 50hz With Intel 965gm Graphic Card?

Feb 28, 2011

I had an old thinkpad x61s laptop running ubuntu 10.10 with an intel gm965 graphics card. When i checked the monitor today it says the refreshing rate is 50hz and there is no other option available. I vaguely remember it used to be working at 60hz when I was running xp, so I googled and searched the forum for answers but came with no luck. Some people reported a similar problem with their nvidia graphic card and they seems to be able to modify a xorg.conf file to manually solve the issue (sadly I don't know how).

View 4 Replies View Related

Ubuntu Networking :: Network Adapter Power Management Settings

Jan 16, 2010

How do I set the network adapter power to maximum? In windows, this can be easily set under device manager --> hardware --> ..power management.

View 2 Replies View Related

Networking :: Lost In Network / Setting Up Network On Laptop With Virtual Guest Machines

Feb 16, 2010

I've been trying to understand how Linux creates the network/interfaces on a machine (been reading the Linux admin guide), but as I'm pretty new to this subject, I've got lost in the forest.

To provide with my goal:
1.) Learn about network setups on Linux
2.) Be able to maintain my own (virtual) network
3.) Configure my (virtual) network

View 1 Replies View Related

Fedora Networking :: Failure Connecting VPN To Corp Network ?

Jan 12, 2011

I am running fedora 14 and have tried to setup VPN access to work. I used the simple networking GUI program. Another engineer at work uses ubuntu and that is how he accesses the VPN. I think that I did everything right but get this generic 'VPN connection failed' message. I am trying to connect to a monowall firewall and have the IP address. Yes, I have an account but am just trying it for the first time. I turned on all of the options available which seemed correct based on the instructions that I had. I have contacted my sys-admin to try to find out what the monowall doesn't like. However, I am wondering if I might need to open an outgoing port on my linksys home router/firewall and, if so, which one?

View 2 Replies View Related

Ubuntu :: Prevent The Sleep State From Being Lost On Power Failure?

May 17, 2010

When I tell the computer to go to sleep and there is a power failure the sleep state is lost. Is there a way to prevent this? I already know about hibernate and I'm using it but sleep is faster and there is no complete loading of the computer (BIOS, Grub and so on) it just goes directly into the desktop. As far as I know the sleep state is done when everything is in RAM and the computer is turned off but the RAM sticks still receive power. Is this true?

P.S. Can this be done with hibernate and SSD drives? As far as I can tell from what I've read it will be the same but with no state loss. Is this true?

View 2 Replies View Related

Ubuntu Installation :: Power Failure During Kernel Update - How To Recover

Sep 12, 2010

I was updating the kernel and left the computer to let it do its business. There was power failure and I don't know if the update completed or if it was in the middle of it. Now if I start the computer, it freezes up at the login screen. I tried to recover from grub, by selecting "Ubuntu, with Linux 2.6.32-21-generic (recovery mode)". There were no prompts for input after this. The recovery screen is not updating anything after:

[2.348886] EXT4-fs (sda1): INFO: recovery required on readonly filesystem
[2.349015] EXT4-fs (sda1): write access will be enabled during recovery
[2.577641] EXT4-fs (sda1): recovery complete
[2.578072] EXT4-fs (sda1): mounted filesystem with ordered data mode
Begin: Running /scripts/local-bottom ...
Done.
Done.
Begin: Running /scripts/init-bottom ...
Done.

When I come out of that screen (ctrl-alt-del), the problem repeats.

View 3 Replies View Related

Ubuntu Servers :: Lost Months Of Data After Power Failure?

Nov 13, 2010

Running Ubuntu headless server 9.10 with a RAID 1 on ext3. After a power failure (UPS power button was hit accidentally), I logged into the system via ssh and found that I had lost all data since my last reboot, which was 4 months ago. It was as if I had a perfect snapshot of my machine from 4 months ago. Everything, database files, logs, all report as if the machine had been off for 4 months. Fortunately, I have quality backups of all my data so I am able to recover, but I have never had such a problem before and I cannot figure out what happened.

View 4 Replies View Related

Fedora Installation :: Power Failure During Preugrade?

Jun 3, 2010

I had a power failure during the portion of the upgrade after the reboot where it was upgrading the packages.I tried restarting the machine with the upgrade line in the bootloader but it says it cant find the bootloader. So I rebooted into the working install and ran preupgrade again, and after it reboots, it gives an error the it cant find "root" of the previous installation.even thought the machine boots and works, I cant tell what state I am in. the boot option lines, shows a fc12 kernel designation and the "about this computer" says "release 13"Also the add remove software doesn't show anything.

View 12 Replies View Related

OpenSUSE :: Gnome Is Broken After Power Failure

Feb 3, 2010

I had a power failure, now Gnome will not completly start and just hangs almost there. another member of the family was at the computer and when it restarted and something like TomBoy was flagged as no working and the question was asked if they wanted to delete reference or not , so they said yes now Gnome still will not finish loading. How do i repair from the console prompt?

View 9 Replies View Related

General :: Xserver Won't Load After Power Failure?

Oct 31, 2010

The other day I was in the process of updating an install of Debian Testing (Squeeze). It so happens that the power went out at just the wrong time. According to the dpkg log it looks like it was in the proccess of completing the postinst script for the kernel update I purged all the kernels that were installed and reinstalled the most recent version. Mind you, that the machine booted and appeared to be just fine when the power came back on but I had no gui. So after reinstalling the kernel I still didn't have a gui.So I proceded to purge and reinstall kdm, xorg, xserver-xorg & related, and anything else I could think of.All with out success.This machine has an xorg.conf file. I have edited that file to try the vesa driver instead of the intel driver, no joy. I have renamed that file to force a complete auto-configuration of the xserver on launch but no joy.

Code:
(II) LoadModule: "intel"
[code]...

View 5 Replies View Related

CentOS 5 Server :: Read Only After Power Failure?

Sep 19, 2009

I had a power failure the other day and my server shutdown abruptly. After bringing the server up I noticed that the /var partition came up as read only. I was not able to edit the crontab, not able to write to files within /var/log/ and do other write operations within /var.

I did a mount and it showed that /var was mounted read and write but when trying to run certain operations the system was still saying that it was read only.

[Code]...

View 1 Replies View Related

Ubuntu Networking :: Restore Network / Internet Connection After Power Outage

Jan 31, 2010

Sometimes either due to a power outage or due to lightning I turn off my Wimax modem and continue to use my laptop on the battery.Then when I turn the modem back on, there is no internet connection.Here's what I've tried:

1. turn off and on the network connections - right-clicking on the icon on the bar on top of my screen.

2. turn off and on the dsl-provider connection - no effect.

3. When I tried to re-do pppoeconf, it says that there's no response from the concentrator.

This has happened a few times in the past and the only thing I can do to go online again is restart the computer. And it works.Now on Windows, the double-computer icon showing a network indicates connectivity AND data movement. Unfortunately we don't have this on Ubuntu.I'm just after a restart and I'm online now. But I'd like to know if there's a way around this without having to restart.

View 3 Replies View Related

Ubuntu Installation :: Power Failure During Upgrade To Lynx - Kernel Panic?

May 2, 2010

I learned yesterday that doing a massive upgrade on my system while moving was a BAAAD idea.The upgrade process was going along just fine, it was all downloaded and was actually installing that last time I saw it. I unplugged my laptop to move a bookcase out, and completely forgot to plug it back in. After I got back from moving a load, I found my computer was off. I tried to boot up, and I got an error that kind of freaked me out. It reads as follows:

Code:kernel panic not syncing vfs unable to mount root fs on unknown-block(0,0)I'm able to get to grub just fine, and my windows partition loads up just fine, but any of the linux kernels fail similarly when I attempt to load them.I'm sure that I can fix this, I just have no idea how. Probably has something to do with a live cd.

View 3 Replies View Related

Fedora Hardware :: F14 Get Strucked On Booting After Power Failure

Jun 23, 2011

my fedora 14 get strucked on booting after a power failure..what did i do ? i cant open my desktop.my fedora 14 get strucked on booting after a power failure..what did i do ? i cant open my desktop.

View 1 Replies View Related

OpenSUSE Install :: Power Failure, System Rebooted To CLI?

Jun 21, 2011

the power on my street went out overnight, and I came home to a rebooted computer at the command line. I shut it down and rebooted again, also tried the failsafe mode, but it keeps going to the command line. Looked in the BIOS and it didn't see my hard drive settings. But I can see the HD fine when I booted using the live CD (that's how I am able to post here

View 4 Replies View Related







Copyrights 2005-15 www.BigResource.com, All rights reserved