Ubuntu Servers :: Kernel Update - Machine Not Shown On Network
Aug 15, 2010
Today when I logged into my fileserver it told me there were 20 updates available. I went ahead and installed them, one was a new kernel. After reboot, I cannot see that machine when I browse the network. It still has the same static IP and I can still map to the shared drives, so Samba is working. When I browse the network from Windows or my WDTV Live media play it no longer shows the server by name. The smb.conf file is still intact and I restarted Samba. Not really sure where to start troubleshooting why I can't browse to it.
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Sep 26, 2010
I just reinstalled Ubuntu Lucid Lynx and an old problem has come back. For some reason I couldn't fix it even in my previous installation. The problem is the top gnome panel. See the photo below: As you can see, the network icon is not shown properly while the Me menu is being shown twice. I can't even restart or log out or shut down at this situation without pressing the keystroke to turn the power off.
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Jun 20, 2010
I installed the Centos 5.5 with XEN and put 03 virtual machines (Centos 5.5 too). I did this correctly, but I have a problem. In the virtual machine, I need update the kernel. I used "yum update kernel" and this is downloaded correctly and the menu.lst file is updated too, but the kernel not ran. I ran "grub-install /dev/sda" or "grub-install /dev/xvda" and received a error return. I read the device.map file and i ran "grub-install /dev/sde" and received a error return too.
The errors:
[root@vm01 ~]# grub-install /dev/sda
/dev/sda: Not found or not a block device.
[root@vm01 ~]# grub-install /dev/sde
/dev/sda1 does not have any corresponding BIOS drive.
[root@vm01 ~]# grub-install /dev/xvda
/dev/xvda: Not found or not a block device.
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Jan 2, 2011
I have Ubuntu 10.10 Server installed on a 32 core machine(quad AMD Magny Cours 6128 ), and I was wondering what kernel configuration would optimize its performance?So far, I have only found the obvious configurations that are checked off:
1) Processor type and features ---> Support for big SMP systems with more than 8 CPUs
2) Processor type and features ---> Maximum num of CPUs
3) Multi-core scheduler support
Is there anything else I should consider?I plan on running multi-threaded programs with moderate amount of inter-processor communication, shouldn't there be some options related to the shared memory?
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Sep 25, 2010
I was doing a kernel update and can no longer boot into 11.3. I am dual booting with XP. I get Grub screen but no longer see Suse as a boot option, only Windows. I have tried to reinstall, but for some reason I can't get it to boot with DVD. So, is there a way that I can repair my computer without doing a reinstall?
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Aug 11, 2010
I have a centos test machine in my office and its MAC Address has been bind in DHCP server so its pointing to IP 3.209.XX.XX and now i have installed xen machine on it. my Xen machine is pointing to IP 192.168.XX.XX from DHCP while it did not bind in DHCP server. I am able to run "yum update" on my host machine. but i am unable to run "yum update" on my Xen machine.
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Jun 22, 2011
I do not know if this is really something I should worry about. I am running Debian testing on my laptop (HP Pavillon dv6). Today, the aptitude update---aptitude upgrade gave me a new kernel (2.6.39). However, if I boot with that kernel, I get a warning (do not know if that is the way I should call this) telling me that the machine failed to get the i915 symbols so turbo graphics will be disabled.I have not done any serious test, but at first sight I do not notice any difference performance-wise with respect to the previous kernel. what am I supposed to do to fix this?
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Sep 8, 2010
Can I SSH from a windows machine out of my LAN network to a Linux Server inside my home LAN network?
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Dec 15, 2010
I updated the kernel on a ubuntu machine yesterday. No problems so far. But after rebooting I couldn't login via SSH anymore. The session freezes right after authentication. Doesn't matter wether its pubkey or keyboard-interactive.
I couldn't find any hints so far. auth.log does not seem to show any warnings/errors.
Strange thing is: I'm able to log in via SFTP (SCP). I can even use WinSCP to open a "unix like" shell, but it only works for basic commands.
Here is the output of auth.log, when logging in via SFTP/SCP
Code:
This is the output when trying to open a real ssh session:
Code:
Ubuntu: Ubuntu 10.04.1 LTS
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Dec 16, 2010
Problem with my Internet connection. I can't connect to the update servers. I don't know why. It's a brand new installation, not a week old yet. I can't install the support for restricted media for example. The servers won't refresh in YaST. It tells me it can't download the repomd.xml.asc.
The other problem is that some servers on the web won't load for me either.
For example, I get most of my local news from The Toronto Star, and I can't connect to it's website at all.
I can from Windows (I dual boot) but not SUSE. I don't think its a problem limited to that one website either. I am able to connect to most websites though.
This is the result of zypper repos -d
Code:
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Dec 23, 2010
I managed to get my Linksys AE1000 USB wireless adapter to work on Unbuntu 10.04 LTS.but recently I updated the kernel to 2.6.32-26 and when i rebooted I logged on to see my wireless connection was not working.even worse, I can't fn the links i had that showed me how to install it in the first place, its about the fact that the new kernel uses a different usb setup(probably incorrect, let me know it its incorrect). its an issue that the hacked driver isnt compatible with the new kernel release, how can i revert to the older version that it did work on? i'm using a RALinkTech driver [URL]
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Mar 24, 2010
I am experiencing the "slow internet" problem (mentioned multiple times in these forums) but it started exactly when I ran an online update, which switched my boot image from vmlinuz-2.6.31.12-0.1 to vmlinuz-2.6.31.12-0.2. Perhaps a setting somewhere got overridden? When the update occurred, grub couldn't find the OS because it had the wrong version #, and I manually edited it (via a livedisk) and that fixed it; it also switched my vga resolution in the grub conf. OpenSUSE is *acting* like ipv6 is enabled again, but ifconfig doesn't report that, and my MTU is close to 1500.
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Jan 4, 2010
After last kernel update (2.6.31.8) when I try to connect to access-point my system freeze.
I use realtek network card (rt2860sta module).
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Jul 12, 2011
I've installed Ubuntu five months ago, and updated to 11.04. About two months ago, a red triangle started appearing in tray from now and then, with this message: The update information is outdated. This may be caused by network problems or by a repository that is no longer available. Please update manually by clicking on this icon and then selecting 'Check for updates' and check if some of the listed repositories fail.
When I open the Update Manager to check for updates, it says:
Failed to download repository information
Check your Internet connection.
Details:
W:Failed to fetch [URL] 404 Not Found
, W:Failed to fetch [URL] 404 Not Found
, E:Some index files failed to download. They have been ignored, or old ones used instead.
My connection is just fine and when there actually are updates, everything works great, so I don't understand why the red triangle goes on showing up in tray.
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Mar 28, 2010
I just installed Fedora 12 x86 in an Acer Aspire One D250. Everything ran smoothly and was detected upon install but unfortunately after all updates were applied to it I ended with a device with no network connection (not even Ethernet).
This appears to be kernel-related because the old kernel (stock) works as expected. The problematic kernel version is (2.6.32.9-70.fc12.i686).
Is there any known workaround for this? Or am I condemned to run this older kernel until the other one gets fixed?
Another question, in the event a new kernel comes out I'd like to keep to older one as a back up, how can I arrange that?
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Nov 23, 2010
I recently updated my kernel and now can no longer tether my iphone to my openSUSE11.3(x64) laptop. Before the update I could tether.Same machine dual boots to Win7-64bit and can tether just fine.I re-installed the libimobile packages, but my linux no longer recognizes the iphone as a network device.t DOES pop-up some boxes asking if I want to play the media, or view the photos on the iPhone - so that part is working
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Dec 5, 2010
I updated my Ubuntu Desktop systems (2x 10.10 and 1x 10.04) within the last 2 days. After the update, the "clock" applet in the panel has stopped showing the year! Here is how it appears now:
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Aug 23, 2009
I wireless network card is Broadcom Corporation BCM431, but is doesn't work after I update kernel from
2.6.29.6-217.2.7 to 2.6.29.6-217.2.8.
Linux localhost.localdomain 2.6.29.6-217.2.7.fc11.x86_64 #1 SMP Fri Aug 14 20:53:08 EDT 2009 x86_64 x86_64 x86_64 GNU/Linux
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Oct 22, 2010
I successfully connected to my office's (Windows) servers, so usually I can browse for files via Places. But when I want to upload a file for example as an attachment in gmail, after clicking the browse button, only the local drives and folders are visible in the file upload window. Is there some way to tell my browsers (Chromium and FF) there are more drives in life? (I'm using Maverick Meerkat). (And I'm not sure the problem is my browser or my settings or anything else..)
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Aug 23, 2010
I was wondering, how much hassle would it be to setup a PXE boot so I can boot a machine from the network.
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Feb 20, 2011
I have an issue with the manner in which Network Manager is configuring the network and short of ditching Network Manager I can see no solution.The issue : Getting a machine to update its machine name in the DNS serverSounds simple doesn't it I operate a FreeBSD based firewall / DHCP / DNS server, using a default Network Manager DHCP configuration the Fedora clients do not register their names with the DNS server when they obtain an address.
I have traced the communications with Wireshark and the Fedora clients are NOT supplying the PC's hostname as part of the exchange so this is NOT a DNS server configuration issue. If I uncheck the option 'Automatically obtain DNS information from provider' under the DHCP settings the Fedora clients DO register the hostname that is put into the Hostname (optional) databox. They do NOT however store the DNS server IP address or any other records defined by the DNS server.
Is there some hidden settings or is this a bug because it isn't acceptable 'DHCP' behaviour if it isn't possible to automatically set DNS server IP addresses and at the same time register the hostname during the DHCP negotiation. Before it is said I know I can use a fixed DNS IP address but am not prepared to long term, I am also not prepared to define the Fedora clients with a 'static' IP. I am similarly not interested in playing around with scripts or any other such 'frigs' to achieve what should be a standard activity - registering a host with DNS during the DHCP negotiation.
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Jul 29, 2011
this is a brand new installation of 10.04 on a desktop. it's a dual boot with XP and the connection works on that side.i'm thrown off balance by the complexity of the situation... at least it is to me . i am able to see my wireless connection (along with my neighbor's). i enter the WPA password when prompted and for the next 5 minutes, it tries to connect with no success at the end.
Code:
francis@gandhi:~$ sudo lshw -c network
*-network:0
[code]...
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Mar 18, 2010
I have an ubuntu kk laptop connected via wireless to my mixed network (xp, win7, other ubuntu), but i can not ping said machine or connect via ssh. Internet and smb-browsing ON this machine work, as does pinging FROM it. If this was a windows machine, I'd say a firewall is in the way, but since it's a vanilla karmic install, this should not be the case (or should it?).
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Jul 24, 2010
It seems whenever i create a folder it creates the folder as untitled folder, but i can't change the folder name it just says "you don't have permission to rename item" but yet i created the folder and it is there. One thing i have noticed is that once i enter a folder it won't even let me move the folder.
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Dec 3, 2008
I have ubuntu-8.04.1-server installed on virtual machine. It works perfect. Now, I made copy of this virtual machine. I started that copied machine and it works fine, except one thing: network does not work!
I have several others VMs with freeBSD, openBSD or Windows on it, but only ubuntu machine hes network problem after coping. I tried some other VM with ubuntu on it - same problem! I downloaded VM with ubuntu - same problem.I take a look into /etc/network/interfaces file and it looks just as it should (same as before coping) but ifconfig command returns parameters for lo only (before coping there was eth0 and lo).
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Sep 5, 2010
I am using debian testing on my office pc, but i need to access it's desktop from time to time. So i need No machine/teamviewer software that can provide me with possibility to interact my desktop. The problem is, that i want to run shadowed session type, because teamviewer is not good for me. So, when i run no machine in shadowed mode, it crashes with message "The connection with remote server was shut down, please check your network settings and try again." The log is here:
[Code]....
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Mar 3, 2011
I'm successfully hosting an https site on my single available public facing IP address - but I want to expose a couple of internal web sites. Essentially, I have:[URL]..I get most of the way there by using mod_proxy and the directive:
[Code]...
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Jun 12, 2011
I use .htaccess to deny all ip addresses except certain to an internal wiki on a subdomain.
Code:
If access is denied to the homepage users are shown the Fedora test page instead of my own custom 403 error page. When I go to a page - not home - I see a standard 403 error page.
Code:
Additionally, a 403 Forbidden error was encountered while trying to use an ErrorDocument to handle the request. Apache/2.0.54 (Fedora) Server at wiki.domain.com Port 80. What am I missing here? Seems like my ErrorDocument is not being reached..
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Feb 5, 2010
Okay currently I am using a a Belkin F6D4050v1 usb wireless n card on a 32 bit intall of ubuntu 9.10. I have already installed ndiswrapper and installed the the rt2870.inf driver and rebooted. But i still have no wireless. when I use the command "sudo lshw -C network" all i see is my pci wired nic card"lsusb" the ID of the card is "050d:935a Belkin Components""sudo iwconfig" sayslo no wireless extensionsetho no wireless extensions
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Jun 25, 2010
I recently upgraded from Ubuntu 9.10 to 10.04 (both 64-bit) and my USB WiFi adapter which previously worked fine stopped working. The adapter is a Hama USB stick based on the Ralink rt73 chipset. I've tried using the Ralink drivers that come with 10.04 (both rt2800usb and rt73usb) but neither work. When I use rt2800usb, the adapter is recognized as interface wlan0, however I can't see any wireless networks. When I use rt73usb (and blacklist rt2800usb to avoid conflicts) I no longer have a wlan0 interface and there is no wireless adapter shown in the network manager. I've pasted in the results of lsmod, lsusb, and ifconfig -a (with MAC addresses removed) below.
[Code]....
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