Ubuntu Servers :: Differences Between Diagnose & Desktop?
Jun 26, 2010
I am struggling to get my wireless usb working on a fresh installation of Ubuntu Server 10.04, but it works just fine on a fresh install of Ubuntu Desktop 10.04. So I am trying to work out what's causing the discrepancy. I know the Server version is a "minimal install" of Ubuntu, so something must be missing that affects its overall abilities.
I am planning to compare the file system of a totally fresh Desktop version with a Server version - and would appreciate as much additional brain-power as possible to assist in the plan/execution of what I should be comparing. I hope this will throw up a solution as to what is NOT installed/configured on the Server version that prevents my wireless from working. [It will teach me a lot as well ] COMPARISON PLANAll programs installed on both file systems (looking for differences) Program differences which affect network setup and related hardware (I'm not sure of what this list should have on it) Related configuration files which might affect connectivity (same here - not sure what configures what at this stage)
* Do $lsmod to look for installed wireless drivers Miscellaneous tests
* Disable security on wireless router to see if security config is the cause I'm not sure if the kernel build will be different and if so how to establish this... but somehow wonder if this affects the outcome
If anyone is willing to assist in filling out the gaps in this plan I would really appreciate it. Or maybe there is a better way?
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Apr 17, 2011
I am running Ubuntu 10.10 (amd64) on an Intel Atom 525 motherboard. I have a 5-bay SATA enclosure connected to my system through a Syba SD-SATA2-2E2I PCI card (uses the SIL3124 chipset). Under small to moderate load (transfer speed: ~25 Mb/sec), this setup works perfectly. Under heavy load (transfer speed: ~40 - 70 Mb/sec), the system crashes. By crash I mean I loose SSH connectivity, I can't ping the system, etc. The only solution is a hard reset. Initially, I thought this was a SAMBA problem so I logged into the system and tried doing a copy directly from the SATA enclosure to the system disk (connected directly to the motherboard). After 100 GB copied (at ~75 Mb/sec), the system crashed. My question: I am fairly new to Linux and Ubuntu. How would I go about diagnosing this problem?
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Feb 13, 2010
what the actual differences are between the different versions?Is it simply in the interface or does netbook have different services running by default, different hardware detection or anything else that makes the system run any differently? I know netbook doesn't have compiz installed by default but is the rest of the package set the same? I ask because I have been having various problems with boot and audio along with a few other niggles. I was running the desktop edition through the betas and the RC with no problems at all but I installed lucid final from a netbook edition iso and have done two more fresh installs from netbook iso and seem to be having a lot more issues.
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Sep 17, 2010
I'm switching over to Ubuntu from Slackware and was just reading up on the differences between desktop and server. My main question is if I can still setup an x-server on the server box. If I can what do I need to do to make it as easy as possible.
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Jul 21, 2010
differences between Kernel Default and Kernel Desktop? I've found some past threads like this link and this other link, and some other google info, which suggest the only difference would be the io scheduler. Also, I see the default grub choice is "Desktop" and not "Default", so I take this as a suggestion to prefer one over the other.
However, my broadcom 4312 wireless only works on the "default" and not on the "desktop" kernel, so I guess there must be other differences. I just want to evaluate which one is the less long-term risk option to go.
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Apr 2, 2010
When trying to run MS Communicator 2007 in XP hosted by Ubuntu 9.10 using VirtualBox 3.1.6, the Communicator process inside the virtual image maxes out (90%+) and it becomes unusable (host reports VBox at 50% CPU). If I migrate that image to a Windows host, VBox does not show the same issue (Communicator process ranges from 20-35%). Creating a similar VMware image on the Ubuntu host and running it also does not show the issue (Communicator process ranges from 20-35%). So obviously there is some kind of bottleneck occurring with VBox on Ubuntu. My questions is, how do I figure out what that bottleneck is?
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May 30, 2010
The problem is random but reproducible: go to http://www.tvbythenumbers.com/, navigate around for a while, click some links...eventually firefox (3.6.3 on 10.04) will crash. I tried running firefox from the command line, but all it says is 'Segmentation fault' with no details. What can I do to diagnose this?
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Jan 18, 2011
How to diagnose a possibly failing harddisk. This is the system disk of a Windows XP machine that will not boot. It gets to the "progress bar" that runs across the screen a few times but then it always stops in the same spot. If I boot from a live Ubuntu CD what tools should I use to find out if the disk itself is failing? The disk is under warranty but if I take it to the shop and the problem turns out to be software errors then I have to pay so I want to be sure what is going on before going there..
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Sep 22, 2009
A recent yum -y update produced the same error on a half dozen boxes: --> Finished Dependency Resolution gnome-phone-manage 0.65-1.fc11.x86_64 from installed has depsolving problems --> Missing Dependency: libgnome-bluetooth.so.2()(64bit) is needed by package gnome-phone-manager-0.65-1.fc11.x86_64 (installed) Error: Missing Dependency: libgnome-bluetooth.so.2()(64bit) is needed by package gnome-phone-manager-0.65-1.fc11.x86_64 (installed) So I did the following:
[code]....
I am at a loss as to what the complaint is about. Everything appears to be in order and the application works just fine. Can anyone tell me what yum is complaining about?
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Dec 15, 2010
My server crashed last week and I'm trying to diagnose why. /var/log/messages contains the following error messages, which indicate that the server's memory peaked. I would like to discover what process caused the memory peak. Being that "httpd invoked oom-killer", can I conclude that httpd was the cause of the memory peak?
[code]....
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Jan 16, 2011
Just recently I've been having strange connectivity problems with my wireless network. The connection has previously worked fine and haven't had any problems with it. I haven't installed anything that would have affect it as far as I know. how do I go about testing the network to see where the problem lies? I'm running Ubuntu 10.10 with a Netgear WG111v2 wireless adapter and my guess is it is some strange configuration problem or a rogue application is eating up packets because the system works fine when I boot it up into Windows.
When I try to ping my router I'll usually get something like 98% packet loss. However in the output below, the network sprang to life half way through my pings so it went up to 63%. What other tools can I try to find out what's going on?
Code:
alex@obsidian:~/dev $ ifconfig
eth0 Link encap:Ethernet HWaddr 00:1a:4d:4e:03:3f
UP BROADCAST MULTICAST MTU:1500 Metric:1
[code]....
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Jan 18, 2010
My old custom PC is starting to die on me. Half the time the bios won't POST, and when it does beep and start to load, the system will freeze at random. It will freeze in bios settings, loading up the OS, or just whenever it wants to. Sooner or later I actually get the computer running, and it will freeze less and less frequently until it will be able to stay unfrozen for days as long as I don't reboot it. Rebooting the machine will usually start the whole freezing process all over again. Anyway, I want to learn how to figure out what is not working on my computer. I have been switching out RAM, PSUs, video cards, and bios settings to see if I could fix it, but nope. So how do I go about diagnosing this problem? I'm pretty much assuming it's a hardware one.
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Apr 12, 2010
i recently switched from slackware to debian because my laptop kept freezing up on slackware, and now it's doing the same on debian on slackware i would get this error in syslog: "hpet: compare register readback failed" at the exact time of lockup, which would leave me with a blinking capslock led indicator, and a completely frozen system (not even magic sysreq sequence would do anything) now on debian, same symptoms only there's nothing in syslog, and no blinking capslock led hardware is: i7 720q intel pm55 chipset nvidia gt 240m laptop model is lenovo ideapad y550p this will occur both in X and at the console i am using my own kernel as the default kernel doesn't support my ethernet adapter i have tried disabling hpet at boot, but there was no difference i have tried the patch posted here
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Feb 14, 2011
I've got an LG CD/DVD player/writer in my desktop, and it's suddenly stopped working. No error messages at all, but it doesn't acknowledge any discs any more, whether they're CDs or DVDs or CDRWs or anything. How can I diagnose what's wrong? It's only 1.5 years old so I wouldn't expect it to be a hardware problem really, but I can't think of anything else. At first I thought I'd broken something with Squeeze, but I ran a live system from USB stick and it also can't read any discs at all. Also I tried a bootable DVD and couldn't get that to boot either, so I'm pretty confident it's not a software problem. It's always worked fine before and hasn't had any shocks or moves or anything (that I know of). The green light flashes when I close the drawer, just flashes a few times and then stops. There's nothing in /var/log/messages. Are there any tricks to figure out what might be wrong or is it looking like I need to buy a replacement drive?
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Aug 3, 2010
I have tar files where I archive about 250 files, each about 80 Mb, without compression. In a few cases tar is only returning some of the files. For example, when doing an extract of the file using:
tar -xvf 356.tar
I got only 103 files, when it should return 255 files, but tar does not give me an error. Furthermore, the tar archive is 15.8 Gb while the extracted folder is just 6.4 Gb. The tar files were created using:
tar -cvf 356.tar 356
where 356 is the name of the folder. All the steps where done in the same machines, under Ubuntu 6 and newer. Any ideas if there is a way to recover the files that are not being extracted?
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Jun 4, 2011
Using a set of instruction given to me, I was able to set up a Macintosh system running Mac OS X to successfully connect to a virtual private network.I then tried to adapt those same instruction to configure a system running Fedora Linux 12 on an Intel Core2 Duo system.However when I try to connect using the NetworkManager Applet, I get an error that saying the VPN connection failed, with no clear indication of what the actual problem is.What can I do to troubleshoot this problem and find out why the connection is failing?
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Jul 9, 2010
I downloaded bind 9 on my machine, but when I try to start the service "service named start" it fails. I found the logs by grep named /var/log/messages
Jul 8 22:10:49 localhost named[27072]: starting BIND 9.3.6-P1-RedHat-9.3.6-4.P1.el5_4.2 -u named -D -t /var/named/chroot
Jul 8 22:10:49 localhost named[27072]: adjusted limit on open files from 1024 to 1048576
Jul 8 22:10:49 localhost named[27072]: found 2 CPUs, using 2 worker threads
Jul 8 22:10:49 localhost named[27072]: using up to 4096 sockets
Jul 8 22:10:49 localhost named[27072]: loading configuration from '/etc/named.conf'
Jul 8 22:10:49 localhost named[27072]: using default UDP/IPv4 port range: [1024, 65535]
Jul 8 22:10:49 localhost named[27072]: using default UDP/IPv6 port range: [1024, 65535]
Jul 8 22:10:49 localhost named[27072]: listening on IPv4 interface lo, 127.0.0.1#53
Jul 8 22:10:49 localhost named[27072]: listening on IPv4 interface wlan0, 192.168.1.3#53
Jul 8 22:10:49 localhost named[27072]: command channel listening on 127.0.0.1#953
Jul 8 22:10:49 localhost named[27072]: command channel listening on ::1#953
Jul 8 22:10:49 localhost named[27072]: the working directory is not writable
Jul 8 22:10:49 localhost named[27072]: zone admin.myhost.remcycle.net/IN: loaded serial 2010070700
Jul 8 22:10:49 localhost named[27072]: zone admin.myhost.remcycle.net/IN: sending notifies (serial 2010070700)
Jul 8 22:10:49 localhost kernel: named[27073]: segfault at 00002aaaac0000d8 rip 00002aaaac0000d8 rsp 0000000040e78f58 error 15
I hear that "The working directory is not writable" is nothing to worry about and is just something that is complains about for no reason, but I can not decipher.
"Jul 8 22:10:49 localhost kernel: named[27073]: segfault at 00002aaaac0000d8 rip 00002aaaac0000d8 rsp 0000000040e78f58 error 15 "
I know segfault is having some memory problem at 00002aaaac0000d8 but does rip mean insertion point? What is rsp? Where do I find out what error 15 means?
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Apr 13, 2010
In the last couple of days when I start Kontact it gets frozen on FEEDS. I have tried to start all of the applications within Kontact separately and they all start fine except for Akregator i.e. Feeds. I have been looking for a debug howto or a log file location to try diagnose where/what the problem is. Opensuse 11.2, KDE 4.3.5.
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Sep 19, 2010
I just upgraded my home machine to 11.2 but apache is not starting automatically. I tried deleting apache2 in YaST and reinstalling it but it still doesn't start. It doesn't appear as an icon in YaST under network services either. There's a log directory for it but no logs. There's an /etc/apache2 directory.
I haven't tried starting it manually because (a) I don't want to destroy any evidence and (b) I want it to work automatically in future.
Is there something else I should be doing? Or how to diagnose?
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Jun 28, 2010
I can't update, download packages, or even diagnose due to an elusive error.
If I try to update or check using terminal I get this:
I even tried to restart in recovery mode to check for broken packages and I got this error:
I usually find answers in the documentation but this time I'm really stumped. I am Running 64 bit Ubuntu 9.04.
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Apr 2, 2010
I recently switched from Windows XP to stable Debian w/KDE on my work dell B120 laptop. I have been trying to diagnose freezes. In the evenings I have been leaving an SSH connection to my home computer. I leave a command running that writes the current time to a file every ten minutes. The past two nights it has stopped writing the time after a couple hours (not at the exact same time), and I am no longer able to ssh from my home computer to my work computer.
When I get back to work, the work laptop is frozen. CTRL+Alt+Backspace does not help, neither does CTRL+ALT+F1. Ctrl+Alt+SysRq works sometimes. It has not yet frozen while I have been present.
I tried disabling the screen saver and monitor power controls in KDE, thinking that those only come on when I am away, so they might be the cause. But it did not help.
I took the last time recorded by my ssh connection and looked through the logs trying to find something that happened at that time, but the only event occuring around the time the SSH connection dropped was a chron job that runs every hour. As far as I can tell, the chron job does not actually do anything but write to the log each hour.
So obviously I need to post more information. What would be helpful? Which log or configuration files might contain clues?
I see these lines in my logs:
kernel: Kernel logging (proc) stopped.
imklog 3.18.6, log source = /proc/kmsg started.
It appears at 6:25 AM each day between when the SSH connection drops and when I arrive in the morning. Do I need to restart logging?
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Dec 23, 2010
Where does one look in terms of diagnostics after a system lockup and hard reset? For example, one of my computers, running Fedora 14 i686, has taken to locking up quite a bit lately. My only way out is a hard reset. Now, once the thing is booted back up I'd like to try to figure out where the problem lies. Where do I look? Will any of the log files reveal anything relevant to me? If so, what sort of things would I be looking for. Keywords?
This same box also locked up when I had Fedora 14 x86_64 installed. I had read that there were some issues with the newer 64 bit kernels that were causing lockups and / or extremely high loads. This is why I switched back to the 32 bit version, 2 days ago to be exact. The box gets little use. It's a toy really and not my main "daily use" computer. It is, however, running folding@home. Maybe that's where the problem is. About 15 minutes ago I called home and had my wife reset the box, then I logged in from work and stopped the folding service. I'll have to see if it locks up without folding running. Folding was running on this box when I had the 64 bit version installed also.
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Apr 3, 2010
Seen as my ATI driver doesn't support Ubuntu 9.10 and neither does LinuxMCE [my two biggest bug bears at the moment] I am considering downgrading to Ubuntu 8.10.
I just wondered if there were any major differences or if I am likely to see any major issues because of things that were fixed or added to 9.10 that weren't available in 8.10.
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Aug 4, 2010
I've seen in the forums people prefer or dislike Gnome/KDE. I looked around and the differences seem to be cosmetic and not that complicated. Are there any differences "under the hood"? What I mean by this is maybe the way programs behave, user options, etc. or is it all cosmetic?
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Sep 23, 2010
I am not having a problem but I was just wondering, now that 10.10 launch is coming nearer, whether or not to upgrade from 10.04 to 10.10. 10.4 is working fine and the only real reason for me to upgrade would be a better boot time (is there a better boot time with 10.10?) ... or am I missing an other important reason?
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May 29, 2010
differences between Valgrind and Frama-C. I need tools for debugging my C projects, which are getting too big and complicated to debug.
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Mar 7, 2011
I've got a slight problem here, and have had it for a while: When I use the "Sharp'N'Clear" .fonts.conf from Here, and set an optimized font like Arial, gtk-based applications render correctly, while Qt-based ones don't As you can see, the top window(Firefox) has it's fonts clean and nice. The bottom one(Dolphin) does not. Both are set to Arial 9. I've tried it with a number of different applications, including some custom PyQt4 stuff, and it's clear that it's -all- Qt-based applications and not just one or two.
For further information, I've had this problem ever since I upgraded from Kubuntu 9.10 a while back - That version worked correctly on both Qt and gtk, but nothing since has.
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Apr 30, 2011
I'm just wondering if there's a page out there that lists the improvements and other changes to Ubuntu from Maverick to Natty.
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Apr 3, 2010
what are the exact differences between Kubuntu and Ubuntu? like programs, etc. the desktop environment is obvious, but what are the smaller differences? I just wanted to know before I download one..
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Feb 24, 2010
Anyone knows the differences between UID 0 and GID 0?
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