Ubuntu :: Network Card Powers Off And Doesn't Come Back Unless Rebooted
Dec 3, 2010
On one of my linux machines (Ubuntu 10.04, 64bit) misbehaves. Whether I restart the "networking" service or go through ifdown/ifup sequence the link disappears. I can see the router light goes off as if the cable is disconnected. The network card light goes dark as well. Everything looks like the device gets powered off and I can't get it back on.
Reboot fixes the problem though it doesn't quite makes sense that one needs to reboot in order to simply update IP configuration (e.g. change /etc/network/interfaces config from DHCP to static IP).
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Apr 19, 2010
When there is a power failure at my university for about 30 minute, my computer stays up because of a UPS, but the switch it is connected to via ethernet is reset. After this, my machine loses network connectivity until I manually select the network using nm-applet.
In System -> Preferences -> Network Connections, the network has the "Connect automatically" box checked.
However, in /etc/NetworkManager/nm-system-settings.conf, there is a line that says:
Code:
no-auto-default=00:30:48:b0:11:07,
and that is the MAC address of the ethernet card.
I'm running Ubuntu jaunty.
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Mar 2, 2011
The message I get when I try and activate is "3c501 device eth0 does not seem to be present. delaying initialization."
Does anybody know what cards are compatible without downloading drivers and other such exercises?
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Jun 26, 2010
I'm trying to activate a wireless network on an ubuntu server 10.04. The machine has a TPLink PCI wireless card. Card is well recognized, and scanning for wireless connection it finds correctly the essid of the access point in the room. But when I try:
Code:
$ sudo iwconfig wlan0 essid "apoint" key s:my_key_8
this error is returned:
Code:
Error for wireless request "Set Encode" (8B2A) :
SET failed on device wlan0 ; Invalid argument.I looked for similar situations over many forums, and I found that it could be the card doesn't support the encryption type (My AP uses WPA with TKIP). However if I use an ubuntu desktop live CD on the same machine, I can connect witouth any problem with NetworkManager 0.8.
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Mar 26, 2010
So the only experience I have with Linux is all from Ubuntu, and I just spontaneously decided that I needed a change...two days later my triple boot Macbook Pro got slimmed down to a dual boot OSX/OpenSUSE 11.2 machine. But there are some general problems, and I have absolutely no idea how to solve them. First, wireless isn't recognized at all...there isn't even a space for wireless connections. Second, I haven't been able to get compiz to work yet, and I can only suspect that the system doesn't recognize my video card, or the driver isn't installed. Yet again, no idea how to fix this.
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Apr 7, 2011
I cant get openSuse to find my wifi adapter or it does not have the driver installed.
My wifi adapter is the Realtek RTL8191SE 902.11b/g/n
I found a linux driver on the internet, but it asked me to run make in the console and when I did so it said that it couldn't find make.
how to install make from openSuse without the internet (I'm using my windows partition).
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Sep 1, 2010
I'm setting up an LTSP server using Ubuntu 10.4 64bit, and PXE connecting with thin clients using Atheros cards. The ltsp environment is 32bit.
Unfortunately I get an error message with "No interfaces found! Aborting..." and a kernel panic early during PXE boot.
After an enormous amount of investigation, I've narrowed it down to (probably) being the fact that the ltsp chroot environment doesn't have the correct driver for my network card (I believe it's atl1c). The correct driver IS available in Ubuntu, though, as I can successfully boot the thin client from both 64bit and 32bit live CDs and bring up the network interface.
how can I install the correct driver in the PXE environment?
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Dec 22, 2009
I just installed x64 Fedora, and as the title says, NM fails to detect my WiFi card. It's an Encore ENLWI-N with a RaLink RT2800 chipset. The card does show up when I run lspci, although iwconfig yields nothing.Not sure if this helps, but when Ias running Karmic Koala, Ubuntu detected the card immediately and required no configuration
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Jan 18, 2010
On Windows 7, I have VirtualBox running Linux (Ubuntu 8.04), with Samba set up so that the Windows host can access it. But if the virtual machine is shut down & restored, or rebooted, the Windows Network no longer shows it. I've tried refreshing many times, restarting Samba, disabling/enabling the virtual network adapter, and running the succession of commands ipconfig /release, ipconfig /flushdns, & ipconfig /renew, but none worked. As a last resort I could restart the host itself, but is there a better way?
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Sep 1, 2011
i have noticed that if vista is not the active partition, hybernate does not work. it just goes black and then back to the user icon screen to log back in. another "slight" problem was that i was not able to apply a service pack. after restoring vistas dominance i was able to install the pack. is there any other work arounds for hybernate? even though you might not be interested in cleaning up after microsoft.
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Nov 24, 2014
My card Wifi network doesn't turn on, even at loading configuration of the system is failed. I have to wait a long time until the system itself to load.
And when I write ifconfig or iwconfig is displayed in the console interface wireless card.
And when I come in the panel on the network card, it immediately pops up a window that you can not load the network card modules.
I don't know what could have happened, I do not recall that I recently messed with the system.
Here are the pictures: [URL]....
And here I join dmesg.log file, at the end of a failed: [URL] ....
I have linux mint 17 quiana cinnamon
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Aug 8, 2010
I know that we normaly use the command sudo su to change to root.. but, If I want to promotes an user to have the same powers of the root is it possible?
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Feb 28, 2010
i am using amd64 ubuntu karmic.. i am trying to install ns3 in it however once i start the build process..both the CPU are utilised to a 100 percent and after around building 1010 files out of 1050 the machine just powers off i tried doing a memtest..the same thing is happenin over there also..the machine simply powers down before completing the test..
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May 29, 2011
I am curious about a particular matter. Recently I have purchased a small plug computer that I will use as a torrent server and networked file storage. The thing is I will attach an external HDD to this linux box. Now I am curious about something. The HDD is powered on while the box works, but once the work is done the disk seems to keep running and does not spin down automatically - even though there is no I/O happening.
My question is whether I should add a script that automatically powers down the HDD after a while of inactivity to save electricity or is it better to keep the disk spinning? How does spinning down a HDD affect its health?
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Mar 5, 2011
I recently installed language packs for Japanese and changed my system language to it, too. The problem is, now that I try to go back to English, the locale doesn't change back, only the menus are in english. "Apply system wide" in the Language Support didn't do anything; Firefox is in japanese too. Here is my locale output:
LANG=ja_JP.utf8
LANGUAGE=en_US:en
LC_CTYPE="ja_JP.utf8"
[code]....
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Jun 28, 2011
Alright so I lost a sd card that I had uploaded to my comp before it crashed but I wiped the card before I lost it and I want back what was on it..I have ran testdisk and photorec and it has only brought me back 5 or so pics, but when I search the card in deleted files through either program it lets me see the file names, and when I try to save it the computer doesn't read the jpeg file when I go to open the recovered file.
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Aug 4, 2011
I have an Asus/Intel setup with integrated graphics that has been running Unity no problem for a while. I temporarily installed a separate NVidia card to do some hardware compatibility testing for another system that apparently couldn't hack it for Unity and forced it back to Classic. With the Nvidia card removed and going back to the integrated video setup I can't seem to get Unity running again. At the login I've toggled back and forth between Ubuntu (Unity) and Classic to no avail. Is there some way to reactivate it?
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Sep 6, 2010
I am an absolutely beginner with Linux (ubuntu). I got fed up with widows and decided it was time to go. I installed (clean install from a cd) ubuntu 10.04 on my desktop. It is an hp compaq d220 MT.It looks good and feels good, well at least for a while since it keeps crashing. The screen starts to flicker, goes black, and the only way to get it up and running again is to press the on/off button until the system powers off and restart.
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Apr 10, 2010
I have used a wireless LAN PCI card for 3 years and now I want to switch back to the onboard wired LAN card but I cant get it to recognize and I have enabled it in BIOS also the wireless LAN card has been removed.Should I put it back in and then try to switch?
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May 6, 2010
I am trying to back up some DVDs for an upcoming trip, but am having trouble getting dvdrip to work. Ran it in termianl, here is output I am getting:
[Code]....
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Jun 14, 2010
i installed quake 4 with id software's run file and copied the pk4 files to the folder but anyways, when i deleted the game, the free hard drive space didn't come back. i had 20 gig free before install and when i installed it, i had 18 gig free but then i deleted it and i still have about 18 gig free. it didn't free up any space when i deleted it.
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Jan 1, 2011
i was facing some problems with themes in my os. i saw some really cool themes on gnomelook but when i downloaded and applied them, the desktop back ground doesnot change. only the colour of bars and cursors change.
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Jul 12, 2010
my wireless home network is not recognized by my network card (RealTek RTL8190 mini PCI). The post was as follows: "I am using a new computer with Windows 7 , Athlon quad core 2.60 64 bit, 8GB RAM. Internet conection works fine with ethernet but ubuntu does not see my wireless network. card (RealTek RTL 8190 ID: 10ec:8190). Have searched this forum but unable to come up with a fix. I was looking for windows XP drivers to use Ndiswrapper but could not find a list of .inf files. My network is OK and works perfectly in windows and with my 2 laptops. Can anyone point me in the right direction? Additional info: install was done within Windows using WUBI to a separate partition on my HDD. I am new to this and thouroughly confused as to the procedure for installing the drivers if they are in fact available."
I am very frustrated in that I would like to use Ubuntu 10.04 but it is useless without internet connectability. I am new to linux and do not understand where to get the appropriate drivers or how to install them. I wish someone would answer this post and either give me a clue what to do or just say "give up" and uninstall ubunutu.
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Aug 13, 2011
I've installed the Ubuntu 10.04 Server onto a PPC G4 Mac just for the experience of setting up a server. During the installation process Ubuntu couldn't auto-configure my DHCP Network. I'm using the airport card on a wireless network. How can I manually configure the network once Ubuntu is installed.
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Nov 4, 2010
Once i get full screen playback i can't go back while playing vimeo videos. Can't alt+tab, switch desktops, escape, f, ctrl+f, f11. Only ctrl+alt+F<number> works and there I can kill chromium process to kill vimeo.
(posted on chrome bugs already, but maybe anyone has this issue too?)
Anyone knows fix or workaround?
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Aug 9, 2010
I'm trying to boot off of the Fedora 13 ISO disc... After the splash screen my monitor kicks into stand-by and never comes back on..
It doesn't happen when I boot off the hard drive into Windows Vista
It doesn't happen with my Back Track 3.0 Live disc either.
I tried switching from my video card to onboard video in cmos, but no good.
I tried removing the video card and plugging directly into the onboard video, but no good.
I tried starting with only one ram module at a time, no good.
I tried removing all other peripherals, no good.
I actually tried using another monitor too, but no good.
I tried booting the disc from a different drive as well, same thing.. code...
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May 16, 2011
usually I don't have any issue using regex usually, but today.... It just doesn't want to work. I've a text file (called "data") containing this:
[Code]....
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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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Apr 3, 2010
I installed the driver for my network card. iwconfig and ifconfig are all responsive to connecting to the network, I'm given an access point address. Then, I try to connect to a website and no dice. ping www.google.com yields no result. What gives?
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Apr 16, 2011
I have XFX ATI-HD5670 and use proprietary catalyst 11.2-1 in 64-bit Fedora 14.
I am not sure when this started, or if it ever did work before, but when I started noticing that the screensaver will not turn off the monitor, I set the gnome power manager to make the monitor sleep after an hour.
Now, the display will not turn back on after it has been in sleep mode. I know the system is still running fine as I can ssh from another PC and see that everything seems to be normal, no error message in dmesg, /var/log/Xorg.0.log, etc.
/var/log/Xorg.0.log shows that monitor DPMS is not detected but still enables DPMS:
Is this a problem with catalyst driver? I know it's not the PC or the monitor, because I have a 2nd PC with the same video driver with the same problem, but others without this driver don't (ati open source, nvidia, etc. all work fine.)
I'm wondering if the problem always existed before, but I just didn't notice it because the display sleep mode was never set? If that's the case, my hunch is that it looked like it worked because the monitor was smart enough to turn itself off when the screensaver kicked in and just showed a blank screen, and the video driver was never involved with sleep mode until I set it in gnome power manager, at which point it started showing this problem of not waking up? And because the screensaver was no longer set to blank the screen, but to show some animation, that's why the monitor will never sleep anymore?
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