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• I get a Segmentation fault when doing apt-get util-linux

  - by Adam

  I've found that a lot of upgrade commands and Apache on my system are failing with Segmentation faults. I don't know if this is the main one, but a lot of packages depend on util-linux: root@myUbuntuHardyHeronServer:~# apt-get install util-linux Reading package lists... Done Building dependency tree Reading state information... Done The following packages will be upgraded: util-linux 1 upgraded, 0 newly installed, 0 to remove and 72 not upgraded. 20 not fully installed or removed. Need to get 0B/441kB of archives. After this operation, 0B of additional disk space will be used. (Reading database ... 20547 files and directories currently installed.) Preparing to replace util-linux 2.13.1-5ubuntu2 (using .../util-linux_2.13.1-5ub untu3.1_i386.deb) ... Unpacking replacement util-linux ... Segmentation fault dpkg: warning - old post-removal script returned error exit status 139 dpkg - trying script from the new package instead ... Segmentation fault dpkg: error processing /var/cache/apt/archives/util-linux_2.13.1-5ubuntu3.1_i386 .deb (--unpack): subprocess new post-removal script returned error exit status 139 Segmentation fault dpkg: error while cleaning up: subprocess post-removal script returned error exit status 139 Errors were encountered while processing: /var/cache/apt/archives/util-linux_2.13.1-5ubuntu3.1_i386.deb E: Sub-process /usr/bin/dpkg returned an error code (1)

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• Ubuntu 13.10 on Acer V5-472 with HD 4000

  - by Hyperboreus

  I have an Acer V5-472 with intel HD4000 graphics chipset and a built-in 1366*768 display. I have installed ubuntu 13.10 amd64 in legacy boot mode with an external monitor. Installation showed no problems, I can boot from HDD and log into my system. The internal display doesn't work and I have to use an external monitor. I have tried the following (found in other threads) to no avail: Setting grub option "acpi_backlight=vendor" or "acpi_osi=Linux" or both. Installing the intel HD drivers for Linux from their homepage. Running in circles, screaming and shouting. The internal display lights up (I can change the brightness with Fn-Left and Fn-Right) but that's all. When I boot, I get a purple splash screen and from then only the external monitor works. I read somewhere that this might be a problem with kernel 3.11? Has anybody ubuntu running on an Acer V5-472? Should I change ubuntu version or use 32-bit instead? In general, how can I get the internal display to work? Edit: The settings-display dialogue shows the internal display correctly with supported resolution of 1366.

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• Parental Controls in Ubuntu - per user

  - by Hamish Downer

  I would like to set up parental controls on Ubuntu for a friend of mine. I want it so that the child user has the controls set, but the parent user is not restricted. To be clear, they are sharing one computer, so a router based solution won't help. And I would like a set of step by step instructions to do this. Just one way of doing it. I'm an experienced Ubuntu user, happy at the command line. I've spent quite some time googling for this along the way. I hope that the GChildCare project will eventually make this easy, but it is not ready yet. In the meantime, the WebContentControl GUI provides a way of managing parental controls, but apply them to every user on the computer (easy WebContentContol install instructions and detailed instructions, discussion and related links on ubuntuforums). The ubuntuforums post has a FAQ that states that user-specific configuration is not possible with WebContentControl, and then provides 3 links he used to help him do it. But they are far from step by step instructions. There is this thread which is notes along the way and linking to this article about squid and dansguardian. And then to these two dansguardian articles which are somewhat in depth ... So does anyone know of an existing guide to how to set up parental controls on ubuntu with some users not affected? If no one has come up with an answer after a little bit, I'll set up a community wiki answer so we can come up with a guide.

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• Ubuntu 12.04 froze during update, won't boot

  - by Cichol

  I've recently installed Ubuntu 12.04 on my laptop, and every time i tried to update it, it would freeze for a few seconds, and tell me that the updates could not be downloaded. After many, many tries I managed to get them downloaded, but then in the middle of installing them, it froze. Completely. No mouse movement, no blinking lights, no nothing. After a few hours of letting it sit there, I finally hit the power button to do a hard reset, and now when I select Ubuntu on the boot screen (Dual-boot with Windows 7), I get a blank purple screen, and then nothing. Another freeze. I've tried getting into the console, but no command I input has any visible effect. I have a ton of music stored on the partition it's in, so I'd really rather not have to reinstall. My specs, to the best of my knowledge: Clevo Corp model B7130 (Sager custom) CPU: Intel Core i5 @ 2.53gHz (4 CPUs) Graphics Card: Nvidia GeForce 425m 4096 MB RAM Drivers: Whatever comes with the download of 12.04. As a side-note, I installed Ubuntu via the Windows Installer program (wubi). Does that make a difference?

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• apache2: Could not reliably determine the server's fully qualified domain name, using 127.0.1.1 for ServerName

  - by user35402

  I keep getting this warning when I (re)start Apache. Restarting web server apache2 apache2: Could not reliably determine the server's fully qualified domain name, using 127.0.1.1 for ServerName ... waiting apache2: Could not reliably determine the server's fully qualified domain name, using 127.0.1.1 for ServerName [ OK ] This is the content of my etc/hosts file: #127.0.0.1 hpdtp-ubuntu910 #testproject.localhost localhost.localdomain localhost #127.0.1.1 hpdtp-ubuntu910 127.0.0.1 localhost 127.0.0.1 testproject.localhost 127.0.1.1 hpdtp-ubuntu910 # The following lines are desirable for IPv6 capable hosts ::1 localhost ip6-localhost ip6-loopback fe00::0 ip6-localnet ff00::0 ip6-mcastprefix ff02::1 ip6-allnodes ff02::2 ip6-allrouters ff02::3 ip6-allhosts This is the content of my /etc/apache2/sites-enabled/000-default file: <VirtualHost *:80> ServerName testproject.localhost DocumentRoot "/home/morpheous/work/websites/testproject/web" DirectoryIndex index.php <Directory "/home/morpheous/work/websites/testproject/web"> AllowOverride All Allow from All </Directory> Alias /sf /lib/vendor/symfony/symfony-1.3.2/data/web/sf <Directory "/lib/vendor/symfony/symfony-1.3.2/data/web/sf"> AllowOverride All Allow from All </Directory> </VirtualHost> When I go to http://testproject.localhost, I get a blank page can anyone spot what I am doing wrong?

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• Failing to send email on Ubuntu box (Karmic Koala)

  - by user25312

  I have a home network with an XP and Ubuntu (9.10) box. I have created a small test php script for checking that I can send emails from my machine. I am using the same php.ini file with the same [mail settings], yet the file works on my XP box, and fails on the Ubuntu box. I have included the script here, hopefully, someone can spot whats going wrong: <?php // send e-mail to ... $to="[email protected]"; // Your subject $subject="Test Email"; // From //$header="from: test script"; $header='From: host-email-username@hostdomain_here' . "\r\n" . // Your message $message="Hello \r\n"; $message.="This is test\r\n"; $message.="Test again "; // send email $sentmail = mail($to,$subject,$message,$header); // if your email succesfully sent if($sentmail){ echo "Email Has Been Sent ."; } else { echo "Cannot Send Email "; } ?> The emails have been spoofed for obvious reasons, but otherwise, the script is exactly as the one I tested [Edit] I have since installed mailutils package on my Ubuntu box, now the script runs and returns 'Email has been sent'. However, the mail never arrives in my mail inbox (I've waited 1 day so far). Is there something else I need to be looking at?

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• MySQL moving ibdata & ib_logfile

  - by XoR

  I'm trying to move ibdata & ib_logfile on ssd drive. I tried this way, but it don't work: service mysql stop cd /var/lib/ cp -ra mysql mysql_backup cp -a mysql/ibdata1 mysql/ib_logfile* /ssd_drive/mysql my.cnf looks like this (relevant parts): innodb_log_group_home_dir=/ssd_drive/mysql innodb_data_home_dir=/ssd_drive/mysql After all changes I get following errors: InnoDB: Unable to lock /ssd_drive/mysql/ibdata1, error: 13 InnoDB: Check that you do not already have another mysqld process Do I need to remove some lock files, or there is something else that I forgot... Also I setup mysql apparmor so it can rw on this directory, and rebooted afterward: /usr/sbin/mysqld { ................. /ssd_drive/mysql/* rw, ................. }

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• This Week's News From the Green Data Center Management Front

  Among this week's developments in green data center management: myriad federal and state tax credits are now available for Green IT projects related to data centers; the EPA is finalizing its Energy Star program for data centers; and Numara Software has a way to help you better green your data center.

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• This Week on the Green Data Center Management Front

  Among the big news this week in green data center management: APC will demonstrate how to provide energy while addressing energy efficiency legislation; Altruent Systems announced it has completed a new energy efficient data center for one of its key clients; and Voonami is unveiling what it claims is the greenest in Utah.

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• Slow old notebook Hardy => Karmic

  - by Mailo

  Hi, i have one very slow notebook from year about 2000. On the computer is running icewm with firefox (in this times chromium for testing). My question is if it's good step to upgrade the system to Karmic Koala? I can't install another OS on that. It doesn't have CD-ROM, it can't boot from flash, or network. The new wanted state is little bit faster system for browsing web and copying photos to local NAS. I don't mention hardware configuration, becouse it's real speed is really deep below the paper parameters.

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• Network problems with Ubuntu on VMware

  - by svick

  I'm running Ubuntu 10.04 inside VMware Player running under Windows Vista and I can't connect to the internet or the host computer from the Ubuntu. I have set all the VMware services to “manual” (like VMware DHCP Service), but starting them manually doesn't help. In VMware, the network seems to work (there is a green dot beside the network icon) and I have tried both Bridged and NAT settings. ifconfig doesn't show the eth1 interface, unless I give it as a parameter (or use -a). I think this means that Ubuntu thinks that the network isn't connected at all. How do I fix this? ifconvadmin@ubu1004:~$ ifconfig lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:56 errors:0 dropped:0 overruns:0 frame:0 TX packets:56 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:4192 (4.1 KB) TX bytes:4192 (4.1 KB) vadmin@ubu1004:~$ ifconfig eth1 eth1 Link encap:Ethernet HWaddr 00:0c:29:2d:a0:6f BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:0 (0.0 B) TX bytes:0 (0.0 B) Interrupt:18 Base address:0x2000

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• What DBus signals do I send to players to imitate Gnome's multimedia shortcuts?

  - by culebrón

  I have Xubuntu 11.10, XFCE. I want to send DBus signals to the players so that they worked like in Gnome: you press 'play' key, it plays, 'next' - it forwards, and so on. For that, I need to bind to the multimedia keys a set of commands like this: dbus-send --dest=org.gnome.Rhythmbox ... Now, I searched and can't find it: what signals should I send? I need only 3 events: play, forward and rewind.

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• Why is it taking so long to open the Ubuntu Help Center?

  - by Agmenor

  When I click on the Help Center Icon in the 'System' menu, it takes more than a minute to launch the program. More than a minute, for a text only program seeming like a website! All my other programs work fine, and I saw this problem also on other computers. Is there a reason for this? Will it be fixed? I think it is an important issue for beginners. As a response to Scaine, the result of the command software-center is the following: Traceback (most recent call last): File "/usr/share/software-center/update-software-center-agent", line 72, in <module> db = xapian.WritableDatabase(pathname, xapian.DB_CREATE_OR_OVERWRITE) File "/usr/lib/python2.6/dist-packages/xapian.py", line 3195, in __init__ _xapian.WritableDatabase_swiginit(self,_xapian.new_WritableDatabase(*args)) xapian.DatabaseLockError: Unable to acquire database write lock on /home/agmenor/.cache/software-center/software-center-agent.db.tmp: already locked 2011-01-11 19:57:24,495 - softwarecenter.app - INFO - software-center-agent finished with status 1

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• Any suggestions how it would be good to promote software in a small company ?

  - by Derfder

  Ok, I know if I am Red hat or other giant and offer some support etc. I can be profitable, in fact, Red Hat is doing quite well. However, what about a small company where I create a small program. e.g. an instant messenger for a windows or linux (just as an illustration) and I want to sell it. But how can I sell it if it is free and everybody can download it? Any advice? I like the idea of FSF by Richard Stallman, however I am missing the way how to sell my software under GNU/GPL licence. Any advice, how can I solve this problem? Any profitable small business software developers around with their opinion? Any links or names of small companies taht I can look at and study their model of business?

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• TFTP Timing Out on Ubuntu VM

  - by valsidalv

  I'm running a Windows 7 PC with VMware installed which has my Ubuntu (10.04 Lucid Lynx). I recently installed a DHCP server and TFTP (Xinet tftpd) using these instructions. I've mapped a network drive so that my Windows has access to all the files in my VM through a 192.x.x.x IP address. I'm trying to throw some custom firmware onto a router. The router has its own built-in TFTP utility that will download the image. It successfully manages to do everything but it is slow because it writes it to flash memory. There is another method that is much quicker because it writes to RAM directly but it must use the TFTP server in Ubuntu. The issue I'm facing is that the Ubuntu TFTP transfer seems to be timing out. The transfer starts but never goes past ~60%. Here's my /etc/xinetd.d/tftp file (similar to a known working config): service tftp { protocol = udp port = 69 socket_type = dgram wait = yes user = nobody server = /usr/sbin/in.tftpd server_args = -s /home/user/tftp/ disable = no cps = 300 2 per_source = 60 } I've done some searching but can't find any parameters for this file to control timeout time or number of retries. The last two arguments (cps, per_source) and completely alien to me (can anyone explain). I have a few possible solutions but the easiest would be to get this TFTP server working. Can anyone help? Either with a timeout configuration or maybe even recommend a different TFTP server? Thanks!

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• My control key doesn't work, how do I fix it??

  - by Blaine LaFreniere

  My control key on the right doesn't work how it should. E.g. Right ctrl + T won't open new tabs in firefox, right ctrl + w won't switch windows in vim, etc. I know the key isn't physically broken, because xev shows that the right ctrl key generates events, but it just isn't responding as I expect it to in applications. Screenshot: http://i46.tinypic.com/33w1h76.png I tried Kim's answer but it still doesn't work. blaine@blaine-laptop ~ $ xmodmap -pke | grep 105 keycode 105 = Control_R Control_R Control_R Control_R Control_R Tried to map as Control_L as well, didn't work. The computer is a laptop, I am unable to plug the keyboard in to another computer.

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• What do I need to do, to get placed in any software company?

  - by Anto Aravinth

  I'm doing my 3rd year CSE Engineering. I guess this is the right time to ask this question! As in the next year, I'm going to do projects, "get my hands dirty". And there is only few days left out, as I know many people in Stack Overflow are working in Software field, I thought to ask these question. Does the project that I'm doing in my final year need to be excellent? If so, what kind of project to do? And how do you say that the project is excellent or not? Writing the code is very fun and serious at times. But the code should have a good algorithm? And mostly in any software companies interview, what kind of question they ask? Not but not the least, mastering in any particular language speaks in interviews?

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• trouble shooting ntfs-loop-xen combination in wubi based grub of Ubuntu

  - by Registered User

  Here is a situation I installed Ubuntu on a laptop using Wubi in Windows 7 drive.*The laptop is not mine.*I have installed and things worked by now perfectly without any problem.We are trying to set up a Xen (virtualization)environment in this laptop. After setting up every thing cleanly.When I needed to boot with following grub entries menuentry "Xen Linux 2.6.32.27" { insmod ntfs set root='(hd0,2)' loopback loop0 /ubuntu/disks/root.disk set root=(loop0) multiboot /boot/xen.gz module /boot/vmlinuz-2.6.32.27 dummy=dummy root=/dev/sda2 loop=/ubuntu/disks/root.disk ro console=tty0 module /boot/initrd.img-2.6.32.27 } I got error file not found error unknown command 'multiboot' error unknown command 'module' error unknown command 'module' Now to dig this issue further I reboot the machine and go to grub command prompt and manually pass on each of the above parameters which you see in the grub entry when I reached grub> insmod multiboot then I got following message on screen error:file not found. It looks like this wubi+ grub setup has just enough modules to use loopback file on ntfs, but the ACTUAL /boot directory is on the loopback NOT ntfs (hd0,2). Therefore any attempt to read any files from (hd0,2) simply wont work, cause there's no file there.I need to use insmod multiboot and command multiboot and module which are available in grub on a normal install without Wubi.But since the laptop is not mine so I am not allowed to partition it and have to make it work in this situation only. While a normal Kernel is still booting? How can I get module multiboot in this Wubi based install.

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• OSSEC is not running

  - by batman

  I have an two ec2 instances. In one I have installed ossec server and in other I have installed ossec agent. Here are my server config INBOUND (security group/firewall) : port:514 source:0.0.0.0/0 port:1514 source:0.0.0.0/0 But it seems to be not working. In my agent log file I keep on getting: 2012/08/28 06:52:52 ossec-agentd: INFO: Using IPv4 for: x.x.x.x.x.x . 2012/08/28 06:53:13 ossec-agentd(4101): WARN: Waiting for server reply (not started). Tried: 'x.x.x.x.x'. Edit: Running sudo netstat --inet -nlp | grep ossec. I'm getting: udp 0 0 0.0.0.0:1514 0.0.0.0:* 26027/ossec-remoted Where I'm making the mistake?

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• 100% CPU load on Ubuntu 10.04.3 LTS 64bit

  - by deadtired

  I have 2 days since I am trying to fix this issue, with no success. The server is a mysql database server. Hardware: DELL Poweredge 1950, 2x Intel Xeon Quad Core E5345 @ 2.33GHz, 16 Gb mem, 2x 146Gb SAS (software RAID1) Software: Ubuntu 10.04.3 LTS, MySQL 5.1.41 Issue: while mysql is not used and runs with no database, everything seems alright. As soon as I install a database, it has the reason to bring all 8 cores in 100% with low memory consumption. So, you can imagine the load average goes high (I saw 212 load average for the first time). The server doesn't become unresponsive, but you can see it's slow while browsing the project installed. Additional info: the database used is not more than 24MB and it was moved from a server with less resources and a lot more larger databases. So it's not the database/project. my.cnf is not a reason also, as I used both default one and the one I use on the same distribution on another server.What is interesting is that mysql doesn't close any process and runs to the limit of the max_connections. Logs are quiet. Nothing there. I switched to this Ubuntu version after I suspected some problems in the newly Ubuntu 11.10 server. This one worked alright for an hour after I made a kernel upgrade to 3.0.1 (it was using the memory also) I tested disk speed and seems alright. Some more output on the running server: dstat -cndymlp -N total -D total 3: htop command: Idea? Did anyone meet the same problem? Any fix you can think of?

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• Open Source Software Development Center at University of Belgrade

  - by Tori Wieldt

  A new Open Source Software Development Center is open at University of Belgrade, Serbia. It centers around using Java & NetBeans as open source projects to learn from and contribute to. Assistant Professor Zoran Sevarac says that not only does the center allow him to teach software development using open source projects, but also "we are improving our University courses based on the experience we get from working on open source code."  Some of the projects underway are a NetBeans UML plugin; Neuroph (a Java neural network framework, with a NetBeans Platform-based UI); a NetBeans DOAP Plugin; WorkieTalkie (NetBeans chat plugin); and 2D and 3D visualization plugins for NetBeans. University of Belgrade also has an official university course about open source development, where students learn to use development tools, work in teams, participate in open source projects and learn from real world software development projects. Students, teachers, and researchers at the University of Belgrade, and any member of the open source community are welcome to come to learn software development from successful open source projects. For more information, you can contact Zoran Sevarac (@neuroph on Twitter).

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• SSH session becomes unresponsive when logged into Ubuntu Server virtual machine using VirtualBox

  - by nickbart

  Hi everyone, I'm really at my wits end here, so I'm hoping someone here can help me. I have a virtual machine running Ubuntu Server 9.10. It's just a small development environment so I can keep my code separate from the test and production environments. I am running it through VirtualBox 3.1.6 on a laptop running Ubuntu Desktop 9.10. I have it set up with a bridged network connection and it is bridged to my laptop's wireless adapter. We have no wired connections in this office. I boot up the VM and everything is fine. I can SSH into it using gnome-terminal and for a while everything is Kosher. Then seemingly randomly, the SSH terminal session with hang. No error message, nothing; it just becomes unresponsive. If I go to the VirtualBox terminal I find the VM itself is perfectly fine. It can ping and I can SSH out with it. If I restart the networking on the VM the SSH session in my gnome-terminal will most of the time become responsive again. Here's an interesting point, the SSH session will sometimes die right in the middle of me typing something (this points to it not being an idle session issue) and if I go to the VirtualBox terminal and restart the networking and then return to my gnome-terminal SSH session I find that it will come back to life and what I typed when the session hung originally will magically type itself in to the buffer. So, my input is getting stored somewhere and just can't make its way to the VM until the networking on the VM is restarted. I've tried different versions of VirtualBox and used vmdk images and vdi images and nothing seems to work. I can't tell if the problem is with my laptop, VirtualBox, or the Ubuntu Server VDI. Is there anyway to debug this issue? Or has anyone out there seen anything similar? Your help is much appreciated. Nick

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• which drive do I mount

  - by Crash893

  I have a system hdd then two raid1 hard drives I see that sda1 is the system drive but when i do a fdisk -l I get the following results so which of the following do i need to mount to get the "raid" drive and not the individual hdd? root@Mxxxx-PDC:/etc/samba# fdisk -l Disk /dev/sda: 251.0 GB, 251000193024 bytes 255 heads, 63 sectors/track, 30515 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Disk identifier: 0x000762dc Device Boot Start End Blocks Id System /dev/sda1 * 1 30328 243609628+ 83 Linux /dev/sda2 30329 30515 1502077+ 5 Extended /dev/sda5 30329 30515 1502046 82 Linux swap / Solaris Disk /dev/sdb: 400.0 GB, 400088457216 bytes 255 heads, 63 sectors/track, 48641 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Disk identifier: 0x00000000 Device Boot Start End Blocks Id System /dev/sdb1 1 48641 390708801 83 Linux Disk /dev/sdc: 250.0 GB, 250059350016 bytes 255 heads, 63 sectors/track, 30401 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Disk identifier: 0x0009f4b2 Device Boot Start End Blocks Id System /dev/sdc1 * 1 255 2048256 fd Linux raid autodetect /dev/sdc2 256 30401 242147745 fd Linux raid autodetect Disk /dev/sdd: 250.0 GB, 250059350016 bytes 255 heads, 63 sectors/track, 30401 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Disk identifier: 0x000b7f4c Device Boot Start End Blocks Id System /dev/sdd1 * 1 255 2048256 fd Linux raid autodetect /dev/sdd2 256 30401 242147745 fd Linux raid autodetect

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• Belgrade Open Source Software Development Center

  - by Tori Wieldt

  A new Open Source Software Development Center is open at University of Belgrade Serbia. It centers around using Java & NetBeans as open source projects to learn from and contribute to. Assistant Professor Zoran Sevarac says that not only does the center allow him to teach software development using open source projects, but also "we are improving our University courses based on the experience we get from working on open source code."  Some of the projects underway are a NetBeans UML plugin; Neuroph (a Java neural network framework, with a NetBeans Platform-based UI); a NetBeans DOAP Plugin; WorkieTalkie (NetBeans chat plugin); and 2D and 3D visualization plugins for NetBeans. Here's video describing the NetBeans UML plugin: University of Belgrade also has an official university course about open source development, where students learn to use development tools, work in teams, participate in open source projects and learn from real world software development projects. Students, teachers, and researchers at the University of Belgrade, and any member of the open source community are welcome to come to learn software development from successful open source projects. For more information, you can contact Zoran Sevarac (@neuroph on Twitter). 

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• Failing to load rootfs: Ubuntu 10 + grub2 + rootfs ext4 w/ RAID1

  - by James

  I am having problems booting a new Ubuntu 10 (server) install. My primary HD (/dev/sda) is laid out as follows: Device Boot Start End Blocks Id System /dev/sda1 * 1 18 144553+ 83 Linux <-- /BOOT /dev/sda2 19 182401 1464991447+ 5 Extended /dev/sda5 19 2207 17583111 fd Linux raid autodetect /dev/sda6 2208 11934 78132096 fd Linux raid autodetect <-- / (ROOTFS) /dev/sda7 11935 182401 1369276146 fd Linux raid autodetect The rootfs is part of a RAID1 (software) array (currently degraded): # cat /proc/mdstat Personalities : [linear] [multipath] [raid0] [raid1] [raid6] [raid5] [raid4] [raid10] md2 : active raid1 sda6[1] 78132032 blocks [2/1] [_U] The UUIDs for the partitions are as follows: # blkid /dev/sda1 /dev/sda1: UUID="b25dd301-41b9-4f4d-9b0a-0e31713dd74c" TYPE="ext2" # blkid /dev/sda6 /dev/sda6: UUID="af7b9ede-fa53-c0c1-74be-31ec752c5cd5" TYPE="linux_raid_member" # blkid /dev/md2 /dev/md2: UUID="a0602d42-6855-482f-870c-6f6ecdcdae3f" TYPE="ext4" Finally, I have my grub2 menuentry setup as follows: ### BEGIN /etc/grub.d/10_linux ### menuentry 'Ubuntu, with Linux 2.6.32-25-server' --class ubuntu --class gnu-linux --class gnu --class os { insmod ext2 insmod raid insmod mdraid set root='(hd0,1)' search --no-floppy --fs-uuid --set b25dd301-41b9-4f4d-9b0a-0e31713dd74c linux /vmlinuz-2.6.32-25-server root=UUID=a0602d42-6855-482f-870c-6f6ecdcdae3f ro nosplash noplymouth initrd /initrd.img-2.6.32-25-server } When I attempt to boot, grub loads OK, however I eventually get the following error message: Gave up waiting for root device. ALERT /dev/disk/by-uuid/a0602d42-6855-482f-870c-6f6ecdcdae3f does not exist. Dropping to a shell! If from the grub bootloader I open a grub command line, I can ls (hd0,) and it lists the correct partitions with the UUIDs as shown above - sda6 shows 'a0602d42-6855-482f-870c-6f6ecdcdae3f' (the RAID UUID). If I ls (md2)/ it properly lists all the files on the RAID1 filesystem (ext4) so it doesn't appear to be an issue accessing the raid device. Does anyone have any suggestions as to what the problem might be? I can't figure this one out.

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