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• How to (hardware) RAID 10 on Ubuntu 10.04 LTS with 4 drives and motherboard with RAID contoller

  - by lollercoaster

  I have 4 500GB hard drives. I set up a RAID 10 in BIOS, much like shown here: http://www.supermicro.com/manuals/other/RAID_SATA_ESB2.pdf Then I followed these instructions: http://www.unrest.ca/Knowledge-Base/configuring-mdadm-raid10-for-ubuntu-910 Basically I cannot get it to work. I go through the instructions when I get to the "partition" section of the install, creating 4 RAID 1's (2 partitions on each drive, one for primary and one for swap space), then combining to make a RAID 10. Unfortunately it still shows 2 partitions, one 500 GB and another being 36GB for some reason. Any ideas? I think best would be if anyone had found good instructions (step by step) for how to do this...I've been googling for hours and haven't found anything...

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• How to kill this two dialog box for ever permanently in Ubuntu?

  - by YumYumYum

  How to permanently forever remove this 2 dialog boxes from my setup? There are two dialog box very disturbing reason why Ubuntu is becoming disturbing OS. no way to remove them nor it gives any option to kill it. Any idea please how to remove this two dialog boxes completely from my systems? Which appears time time without my wish, like virus, i just dont want to keep those dialog box showing up annoyingly. NOTE: None of the answers and follow up helped to solve that which was asked here: http://askubuntu.com/questions/186312/how-to-remove-permanently-those-error-prompts-while-using-openbox-gnome

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• Ubuntu - why would /var/log/dmesg stop updating after boot? does not show panic/cpu_hung errors which the console shows

  - by Tom G

  So I have an Ubuntu 10.04 install VM on a host. Latest 2.6.38-15-server kernel . /var/log/dmesg displays only the bootup but will stop recording after that. It will not show the trace/cpu_hung errors I am trying to troubleshoot. /var/log/dmesg.0 , dmesg.1 nothing - I did a string search for the text that displays on the console during the crash and NOTHING gets logged anywhere in /var/log/* . I have to call into the provider and ask them to take a screenshot of the console since nothing shows in dmesg. Why would /var/log/dmesg not record kernel panics, or such?

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• What can I do to give some more love and disk space to my database on Ubuntu?

  - by Yaron Naveh

  I'm new to linux. I've deployed a db to ubuntu server on amazon and found out I'm low on disk space. did df (see below) - and found out that I'm 89% capacity on one file system, but less on others. What does this mean? Do I have a few partitions and can now utilize others besides /dev/xvda1? Also /dev/xvdb seems large, is it safe to put the db in it and only use it? If so do I need to mount it or do something special? $> df -lah Filesystem Size Used Avail Use% Mounted on /dev/xvda1 8.0G 6.7G 914M 89% / proc 0 0 0 - /proc sysfs 0 0 0 - /sys none 0 0 0 - /sys/fs/fuse/connections none 0 0 0 - /sys/kernel/debug none 0 0 0 - /sys/kernel/security udev 3.7G 8.0K 3.7G 1% /dev devpts 0 0 0 - /dev/pts tmpfs 1.5G 164K 1.5G 1% /run none 5.0M 0 5.0M 0% /run/lock none 3.7G 0 3.7G 0% /run/shm /dev/xvdb 414G 199M 393G 1% /mnt

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• How to set the hostname according to the DNS name on Ubuntu 9.10?

  - by tangens

  Motivation I have to manage a lot of virtual machines that I create by copying a template (VmWare image). Problem Now I have the problem that in the template the file /etc/hostname contains a given name that I want to change for each copy of the template. Facts The network interface is configured by DHCP. DNS entries exist. The system is a Ubuntu 9.10 server. Question I wonder if I can configure the template so that on startup it sets its hostname according to its DNS name. I could create an init script that parses the IP address, makes a DNS lookup and sets the hostname accordingly. But is there an easier way?

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• How do I enable write access for an sFTP only user under Ubuntu?

  - by Jon Cage

  I'm running Ubuntu 12.04 and am trying to configure a user to allow chroot'd sFTP connections to another section of the filesystem. I've added the following to my /etc/ssh/sshd_config file: Match Group mygroup X11Forwarding no AllowTcpForwarding no ForceCommand internal-sftp ChrootDirectory /home/%u I've set their home directory so that it's owned by root but has their group. I've created a mount --bind from /home/myuser/transfers to /my/filesystem which appears to be navigable. The problem I'm having is that I'm not able to write to any part of the filesystem which makes this pretty useless as an FTP server. What am I missing? What can I check?

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• How To Start NX/VNC Session At Ubuntu Boot Time?

  - by darkAsPitch

  I want an NX or VNC session to start automatically when an Ubuntu server boots up - without a monitor connected - loading a certain user's desktop and keeping it loaded and ready until I log in via NX or VNC. How would one accomplish that? This code works via my terminal when I am logged in as the NX user, but not via root, and not in the init.d folder. No idea why? /usr/NX/bin/nxclient --session /home/user/.nx/config/SavedSession.nxs Please provide somewhat simplified instructions! I am certified linux newb.

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• Is there any way to recover files in /usr/local directory on Ubuntu?

  - by Ilya

  We are running Ubuntu server on VPS. Some files were removed accidentally by placing unnecessary space this command: rm -r /usr/local <directory to be deleted> I know, that in most cases this directory is used by packages to place some part of their content. Is there any where to recover deleted files and directories? I suppose, that theoretically it should be possible. Some software can look through the list of installed packages, check presence of files in file system and recover or reinstall corrupted packages if their file are missing in /usr/local.

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• Ubuntu 9.10 X Stuck in restart loop - I think...

  - by widgisoft

  Trying out Ubuntu, installation went fine - upgraded to the proprietary nVidia drivers but on restart I get a login prompt and the screen is flashing really fast almost as if Xserver is trying to start and failing, I can type when the screen isn't in a "flash" as it were and it's so fast and random it's hard to even type a login name without it missing some characters - this makes typing a password (i.e. not being able to see which characters made it or not) very hard. I can log back into the live cd and alter my settings - but I can't even find out how to stop X stop starting on boot; Looks like they've moved everything around :-p I'd like to: Stop X from crashing and going insane (if it is actually Xserver) Know how to stop X from starting on bootup, Looks like interactive boot is also off by default now Update: A temporary work around seems to be enabling ssh and just connecting to the box over the network - ssh seems to work fine :-p Cheers, Chris

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• How to report a bug against Ubuntu's upgrade process?

  - by Kim

  I just upgraded to lucid and discovered a nasty bug. It prevents the system from booting and took me hours to resolve. Now I'd like to report it along with the workaround I found. The only problem is: Where? Other such bugs have been filed against "update-manager", but that's just the GUI calling some scripts which do the real work. so what do I do? What should I substitute for XYZ in ubuntu-bug XYZ ?

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• How to fill in the network line in the ubuntu interfaces config file?

  - by matnagel

  I have to configure an ubuntu hardy server network interface. The service hoster told me that this is the network data for the machine: IP Range: 111.111.200.74 to 111.111.200.78 Netmask: 255.255.255.248 Broadcast: 111.111.200.79 Gateway: 111.111.200.73 Subnet: 111.111.200.72/29 I am only using the first IP address. I will update the /etc/hosts file with 111.111.200.74, but I am still unsure how the /etc/network/interfaces file should be. This is my plan: auto lo iface lo inet loopback auto eth0 iface eth0 inet static address 111.111.200.74 netmask 255.255.255.248 network 111.111.200.??? broadcast 111.111.200.79 gateway 111.111.200.73 As you can see I don't know how to build the network line. How would I calculate the data for the network line and what is the result? (I changed the first 2 octets of the subnet, they are not "111.111" in the real setup.)

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• How to control fan speed on Compaq Presario under Ubuntu?

  - by Josh

  I have a Compaq Presario R4000 running Ubuntu Linux 9.10 karmic. The system runs very hot and one of the fans is wither never running or always running at the slowest speed. For a while I thought the fan was dead but I just updated the BIOS (Phoenix BIOS) and during the update, that fan suddenly kicked in at full speed! How can I get that fan to spin up during normal usage? I have tried sensores-detect but all it found was k8temp, no fans... (SpeedFan under windows found no fans either)

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• Why do I have no TTY on a basic Ubuntu 9.10 server install?

  - by pr1001

  I have reinstalled Ubuntu 9.10 Server several times on a bog standard 1RU server and each time I finish the install and reboot I see GRUB run and am then presented with a black screen. The machine is running just fine, as I am able to SSH in, but I can't see anything on the attached monitor. I have a simple LCD screen connected via VGA and a signal is apparently being output to it, as it doesn't go asleep. Looking at /var/log/syslog I see: Mar 24 14:57:44 bridge5 rsyslogd-2039: Could no open output file '/dev/xconsole' [try http://www.rsyslog.com/e/2039 ] However, I later see: Mar 24 14:57:44 bridge5 kernel: [ 0.001368] console [tty0] enabled Any thoughts? Thanks!

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• What version of Ubuntu to use for Desktop with 8Gb RAM?

  - by Alexander

  This may sound as a stupid question, but I am really interested whether Ubuntu Desktop i386 will be able to use all my available RAM. I want to use the latest, non-LTS version, 10.10. It says on the website that it's (i386) the Recommended version. I also recall that Flash Player had issues with 64 bit Linux. Also, the 64 bit version is listed in the Universal USB Installer as amd64. Does this mean that it's using instruction sets specific to AMD CPUs? (I have an Intel) Will it work fine with Intel? So which one to download and install? What to do to be able to use 8Gb of RAM?

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• How can I upgrade Ubuntu from 9.10 to 10.04 on a netbook with a 4GB root partition?

  - by Blorgbeard

  I have an Asus EeePC 901, running Ubuntu 9.10. I'd like to upgrade it to 10.04. I don't want to reinstall, since I have a bunch of scripts and programs all set up. However, when I attempt to upgrade using sudo apt-get dist-upgrade, I get an error asking me to free up another ~600MB on /. My / is mounted on sda0, which is a 4GB SSD. I do not have 600MB worth of deletable stuff on /. I've emptied my trash, and done apt-get autoremove and apt-get clean. I do have plenty of space in /home, mounted on sda1 (a 16GB SSD). Is there some way I can tell apt-get to use a different download/temp directory?

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• If using a bootable Ubuntu USB drive, can I use the internal hard drive as a temporary download and

  - by NoCatharsis

  I am new to Linux, so this is probably a basic problem... My flash drive is only 4GB in size and that is not enough to hold kernel and other package updates, even if only temporary. I am actually using Kubuntu, but I don't think this would change the nature of the question...? I would just like to be able to set my download directory to the internal drive to download the upgrades, then replace the old versions installed on the USB. Of course I have no use for keeping the older versions, so would I also have to manually remove those after upgrading?

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• Why do I have no TTY on a basic Ubuntu 9.10 server install?

  - by pr1001

  I have reinstalled Ubuntu 9.10 Server several times on a bog standard 1RU server and each time I finish the install and reboot I see GRUB run and am then presented with a black screen. The machine is running just fine, as I am able to SSH in, but I can't see anything on the attached monitor. I have a simple LCD screen connected via VGA and a signal is apparently being output to it, as it doesn't go asleep. Looking at /var/log/syslog I see: Mar 24 14:57:44 bridge5 rsyslogd-2039: Could no open output file '/dev/xconsole' [try http://www.rsyslog.com/e/2039 ] However, I later see: Mar 24 14:57:44 bridge5 kernel: [ 0.001368] console [tty0] enabled Any thoughts? Thanks!

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• After installing Ubuntu how do I get rid of unity and go back to gnome?

  - by aseq

  After I have installed the newest Ubuntu LTS release (12.04, still in beta though) I am greeted with an unfamiliar and difficult to use desktop environment. I believe it is called unity. However I have used gnome for a decade and a half and I would not like to move to this new and (for me) unusable desktop environment. What is a quick and easy way to remove (most) of unity and bring back gnome, as well as configure my display manager to load gnome by default with the environment as close as possible to the way it was before?

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• Post raid5 setup reboot shows single hard drive failure on ubuntu 12.10?

  - by junkie

  I just set up raid 5 on linux using three HDDs as per a guide. It all went fine until when I rebooted I got the following text: http://i.stack.imgur.com/Zsfjk.jpg. Does this mean one of my HDDs has failed? How do I check if any of them are failing? I tried using smartctl and didn't see any issues. Or is it nothing to do with failure and something else altogether? I would like to get the raid 5 working again but I'm not sure where to go from here. I'm using ubuntu 12.10 and the three raid disks each have a gpt partition with a single full size partition of filesystem type ext4. Note I only got an error on reboot not while I was creating the raid array which went fine. Thanks.

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• Is it possible reinstall packages in Ubuntu without an internet connection?

  - by javamatt

  Hi everyone, While experiencing some massive problems with MYSQL, I completely removed a package called rsyslog, and I can no longer get on the internet to use the package manager to correct my mistake. I also got rid of librdf0 as well (oops). I would like to download the missing packages onto a CD with another computer, and manually reinstall them on my Ubuntu platform. Any ideas where to find these? (I am assuming this is the package I need. Either way, I still need to get access to the correct packages and install them). Thank you all very much in advance. Matt

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• BIND unstable with DLZ+MySQL on Ubuntu 9.10, any ideas?

  - by Chris

  My BIND server keeps dropping out and I can't work out why. Here is some info from the syslog that I think pertains to the failure(s): Apr 22 21:12:17 dnsdebug named[6613]: mysql driver unable to return result set for lookup query Apr 22 21:12:17 dnsdebug kernel: [285552.573949] type=1503 audit(1271963537.759:53): operation="open" pid=6618 parent=1 profile="/usr/sbin/named" requested_mask="::rw" denied_mask="::rw" fsuid=107 ouid=0 name="/dev/tty" Apr 22 21:12:17 dnsdebug named[6613]: mysql driver unable to return result set for lookup query Apr 22 21:13:17 dnsdebug named[6613]: last message repeated 7 times Any ideas? Mysql had a segfault sometimes, but that seems to be no longer an issue. It's the 64bit version of ubuntu too. Sometimes it will return records just fine, other times it appears to just randomly go down.

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• How do I restore the Gnome Panel volume control in Ubuntu 10.04?

  - by Neil

  I use alsa, and I don't have a volume control applet on my Gnome Panel. When I right click and select "add to panel", there is nothing that has to do with "sound", "audio" or "volume" in the list, and the "Indicator Applet" or "Indicator Applet Session" things have no volume controls, or properties that would let you enable any sort of volume control. How can I get a volume control in Ubuntu, so I don't have to run aumix in a terminal or something? I've been using Linux since Redhat 5, it's beyond me why these sorts of problems are still around. Someone should just put a damn "Volume Control" element in the list of things to add to the panel, even if it doesn't work, perhaps showing an error message.

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• What music streaming app fits my needs on Ubuntu?

  - by Jim

  I'm looking for an application to stream Internet radio on Ubuntu. I like listening to Radio Paradise while I work. Right now, I'm using Amarok. "Movie Player" sometimes refuses to open the stream, and VLC doesn't keep its window title updated with the currently playing track. Amarok has nice translucent notifications when tracks change, but track changes in streams don't trigger the notifications. Mostly, I want something that reliably opens streams and makes it easy to see the name of the track that's playing. If it has a built-in directory of streaming radio stations, that would be a big benefit.

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• I tried installing Ubuntu 10.04 and I got this message - any ideas on what to do?

  - by user41926

  No root file system defined. Please correct this from the partition menu. This message shows up when I first boot into Ubuntu after the installation. I installed it by mounting the ISO with Daemon Tools, and I just did the default Wubi installation. I keep reading everywhere that I need to choose my installation directory, but I don't get any option to do that. These are all the options I get for installation directory. I have a C and D partition on my drive, and I tried installing it on both and no luck either way. Any ideas?

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• How to get a remote desktop / X11 with ubuntu 10.04 LTS from mac os x?

  - by cwd

  I am running Snow Leopard OS X 10.6 and I have X11 installed. I also have ubuntu 10.04 LTS running on a remote machine. I have root privileges. So far I haven't really installed anything besides the operating system. This was done in an amazon aws type of way. I see people talking about getting gnome or a "remote desktop" type of thing working, but I'm not sure how to go about this. I connected and then typed in gnome-session but nothing happened. Maybe I don't have that thing installed yet? Can someone point me in the right direction? Also, is it possible to just start an X11 session with a single app, like notepad or a file and folder browser?

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