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• Ubutnu 12.04 mdadm inactive

  - by user32274

  For a while now, my RAID 5 has ceased to work. Everytime I tried "madm --detail /dev/md127", its states all the drive and drive info, but that two of the drives have been removed. After some restarts, doing the same thing, i am getting /dev/md127 does not appear to be active. When I go into DiskUtil, I can see all 6 Hard Drives healthy and present, and i can see the Raid 5 at the bottom under Multi-disk Devices. However, the Raid says 0.0kb, and is not active. Please help and let me know how to proceed from here. I would really like to avoid rebuilding the RAID, especially because all 6 drives seem to be healthy and present. Thanks so much.

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• How safe is ubuntu?

  - by VJo

  Last week I started desktop sharing using krfb. Since I continue last session, this program keep on starting again. Two days ago I noticed messages poping up saying something like "rejecting uninvited connection from (some ip)", but today I figured it might be because of this and I was right. The krfb was running in the background. Hence the question. How safe is ubuntu? Should I expect someone to connect to my computer and erase everything I got on disk? EDIT To extend my question : how safe it is comparing to other OSs (windows, mac,...)? How safe it is comparing to other distros?

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• Attempting to install Ubuntu 11.10 along side Windows 7 Professional 64bit. Installer doesn't recognize an operating system present

  - by KichigaiDave

  System Details: Asus Sabertooth 990FX motherboard AMD FX-8120 CPU 16 GB DDR3 1600 Corsair Vengance RAM (4x4) EVGA Nvidia GTX-560Ti video card 2x Dvd/cd rw dirves 1 Bluray RW drive 1 Orico USB 3.0 & eSata panel 1 Sabrent floppy bay card reader w/USB 2.0 port 760W pc power & cooling PS OCZ agility 120GB SSD (Windows 7 Professional 64bit installed in an approx 80gb partition, NTFS. There is also a "System Reserved" partition shown in disk management at 100mb in size, also NTFS) That leaves about 32GB usable free, un-partitioned space in which I hoped to install Ubuntu. However when I run the Ubuntu 11.10 AMD64 installer, it doesn't show there is even an operating system installed. It just shows the entire drive as free-unpartitioned space. Just not sure what to do here. I was thinking about using the Wubi installer, but i don't know about that. Is the performance reduction pretty drastic? Thanks,

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• Question regarding drives

  - by user205934

  I am a new Ubuntu user who has spent a lot of time on Windows. A very common practice for me on Windows was making two drives, C: and D: , storing installs/files in C:, and I used D: for backup or if I downloaded something that I wanted to save, I saved in D: When installing Ubuntu, it asked me if I wanted to replace Windows 7. I thought it would install Ubuntu on C: but instead it used the whole partition, nevertheless I recovered my backup using testdisk. What I wanted to do was to create a similar backup drive on Linux too. My current partition table: sda 8:0 0 232.9G 0 disk +-sda1 8:1 0 230.9G 0 part / +-sda2 8:2 0 1K 0 part +-sda5 8:5 0 2G 0 part [SWAP] sr0 11:0 1 1024M 0 rom So should I use Gparted to create another sda3 and store my important data on that? Also my current sda2 is listed as an extended partition, should I delete it? It's a very small partition, just 1K.

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• Optimize bootup sequence

  - by ubuntudroid

  I'm on Ubuntu 11.04 (upgraded from 10.10) and suffering really high bootup times. It got so annoying, that I decided to dive into bootchart analysis myself. Therefore I installed bootchart and restarted the system which generated this chart. However, I'm not really experienced in reading such stuff. What causes the long bootup sequence? Edit: Here is the output of hdparm -i /dev/sda: /dev/sda: Model=SAMSUNG HD501LJ, FwRev=CR100-12, SerialNo=S0MUJ1EQ102621 Config={ Fixed } RawCHS=16383/16/63, TrkSize=34902, SectSize=554, ECCbytes=4 BuffType=DualPortCache, BuffSize=16384kB, MaxMultSect=16, MultSect=16 CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=976773168 IORDY=on/off, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120} PIO modes: pio0 pio1 pio2 pio3 pio4 DMA modes: mdma0 mdma1 mdma2 UDMA modes: udma0 udma1 udma2 udma3 udma4 udma5 *udma6 AdvancedPM=no WriteCache=enabled Drive conforms to: unknown: ATA/ATAPI-3,4,5,6,7 * signifies the current active mode And here the output of hdparm -tT /dev/sda /dev/sda: Timing cached reads: 2410 MB in 2.00 seconds = 1205.26 MB/sec Timing buffered disk reads: 258 MB in 3.02 seconds = 85.50 MB/sec

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• (12.04 vm/server) Dist-upgrade to 3.2.0-63 wants to remove git (1.9.2) and git-core - is that the correct behavior?

  - by YellowShark

  was wondering if anyone knows dist-upgrade wants to remove git. FWIW, this is a pretty simple box, mainly used for web dev. $ uname -a Linux precise64 3.2.0-61-generic #93-Ubuntu SMP Fri May 2 21:31:50 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux $ git --version git version 1.9.2 $ sudo apt-get dist-upgrade Reading package lists... Done Building dependency tree Reading state information... Done Calculating upgrade... Done The following packages will be REMOVED: git git-core The following NEW packages will be installed: linux-headers-3.2.0-63 linux-headers-3.2.0-63-generic linux-image-3.2.0-63-generic The following packages will be upgraded: git-man linux-headers-server linux-image-server linux-server phpmyadmin 5 upgraded, 3 newly installed, 2 to remove and 0 not upgraded. Need to get 58.8 MB of archives. After this operation, 199 MB of additional disk space will be used. Do you want to continue [Y/n]?

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• Greenfoot project is read-only

  - by AzharHafiz.com

  I received this message when starting greenfoot on ubuntu 11.10 I'm a newbie and not sure where does the file located (greenfoot) The project is read-only.How and where do I change the permission? You will not be able to create objects or execute methods. Either the access rights of the project directory are set as 'read only' for you, or the whole file system is not writable (is it a CD?). To fully use this project, you must ensure that it is on a writable file system (usually your hard disk), and that you have write permission in the project directory and each file within it. This can often be accomplished by choosing "save as" from the Project menu after closing this dialog.

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• Distro that I can load to ram?

  - by NullUserException

  Is there a modified version of Ubuntu that I can choose to load to RAM on start up? Kinda like the LiveCD, but that can be easily modified (ie: I can install stuff) when I choose to boot from disk. The idea is to install it to a USB drive. I know there's something similar but slax is lacking in many departments. A "full" version Ubuntu would be better. A LiveUSB installation seems to be pretty close to what I want, but apparently I have to choose whether or not it will be persistent by the time I install it. I want to be able to choose that every time I boot.

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• Ubuntu 12.04 Server monitor goes into sleep mode (no display) after fresh install

  - by xamox

  For some reason I can boot and either use Ubuntu 12.04 server edition, or desktop version. I can live boot the disk, I can go through the installer, or even use the ubuntu alternate installer. But for some reason after the install completes and I reboot the monitor seems to go back into sleep mode and then never loads the command prompt. This is on an industrial adlink MXE-1300 PC. I've installed ubuntu server fine on other models of adlink machines but this one doesn't want to seem to play nice. To me it seems like if it was a video card issue than I could never even load the installer or run ubuntu in live mode. Any thoughts or troubleshooting tips would be greatly appreciated.

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• Ubuntu One lost most of my files!

  - by Max

  I keep in my UbuntuOne the source code of my projects as a back up. In the past it worked and I never had problem. It happened that I had to change the hard disk of my laptop and I installed a fresh Ubuntu 12.10 in the new one. First time I connected with UbuntuOne it downloaded my files, but when I went to see my projects almost all my c++ source code files were missing!!!... I tried to check if I still have them on UbuntuOne by accessing from the web but nothing... my work is lost forever. I don't know who to ask for help? Is there a way to get back my precious files? Honestly I can't trust this service any more, I'm very disappointed. (edit: thanks God I found a back up in one of my external hard disks. I won't trust Ubuntu One any more, it's buggy and quite slow. )

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• Analyzing I/O Characteristics and Sizing Storage Systems for SQL Server Database Applications

  Understanding how to analyze the characteristics of I/O patterns in the Microsoft® SQL Server® data management software and how they relate to a physical storage configuration is useful in determining deployment requirements for any given workload. A well-performing I/O subsystem is a critical component of any SQL Server application. I/O subsystems should be sized in the same manner as other hardware components such as memory and CPU. As workloads increase it is common to increase the number of CPUs and increase the amount of memory. Increasing disk resources is often necessary to achieve the right performance, even if there is already enough capacity to hold the data. Too many SQL Servers to keep up with?Download a free trial of SQL Response to monitor your SQL Servers in just one intuitive interface."The monitoringin SQL Response is excellent." Mike Towery.

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• Ubuntu not selectable in boot menu

  - by user113630

  Im trying to dual boot windows 7 and Ubuntu 12.10. i created a partition in windows 7, booted the Ubuntu cd, installed Ubuntu and created a swap space(following all instructions detailed in various video tutorials). after restarting and taking out the disk my computer boots directly into windows. also, in the boot menu where you select what os to boot, Ubuntu doesn't show up, just windows 7. i didn't want to screw around with any settings and figured the community could figure out my problem faster than i could :p any help is greatly appreciated!

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• How to access the SD card through my Sony Ericsson Xperia Arc Phone?

  - by user16364

  I have a Sony Ericsson Xperia Arc phone and I cannot access its SD card through the USB cable provided. I have set the USB connection mode to MSC yet when I connect the phone to my computer I cannot see the SD card (or anything for that matter). The Disk Utility however, does see an SEMC Mass Storage device but it says that no media was detected. I have validated that the SD card works as I removed it from the camera and plugged it into a card reader and saw all the photos and files stored on it. I have validated that the phone works as I have connected it (in MSC mode) to my wife's Windows 7 computer. Can anyone please tell me how I can access the SD card on my phone.

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• PCI function number for SATA AHCI controller

  - by Look Alterno

  I'm debugging a second stage boot loader for a PC with SATA AHCI controller. I'm able to enumerate the PCI bus and find the hard disk. So far, so good. Now, lspci in my notebook (Dell Inspiron 1525) show me: -[0000:00]-+-1f.0 Intel Corporation 82801HEM (ICH8M) LPC Interface Controller +-1f.1 Intel Corporation 82801HBM/HEM (ICH8M/ICH8M-E) IDE Controller +-1f.2 Intel Corporation 82801HBM/HEM (ICH8M/ICH8M-E) SATA AHCI Controller \-1f.3 Intel Corporation 82801H (ICH8 Family) SMBus Controller My question: Is SATA AHCI Controller always function 2 in any PC? If not, how I found? I don't pretend to be general; booting my notebook will be good enough, without compromise further refinements.

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• apt-get upgrade E: Sub-process /usr/bin/dpkg returned an error code (1)

  - by user292425

  When I typed apt-get install upgrade, I got error: Reading package lists... Done Building dependency tree Reading state information... Done 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded. 1 not fully installed or removed. After this operation, 0 B of additional disk space will be used. Do you want to continue [Y/n]? y Setting up linux-netizen (1.0.1-1) ... chrome: no process found dpkg: error processing linux-netizen (--configure): subprocess installed post-installation script returned error exit status 1 Errors were encountered while processing: linux-netizen E: Sub-process /usr/bin/dpkg returned an error code (1) So I tried some method to fix it: sudo apt-get install -f and sudo apt-get install --configure -a But all methods are not working. Please help me....

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• Can't open any of my drives/devices(not USB drive)

  - by Anontu

  I can't open any of my computer drives (:c/,:d/.....) Every time i tried to open the drives, the following notice appeared: (i'm new in Ask Ubuntu,so,i can't upload the snapshot,i need 10 reputations to do that) **Unable to access "__ Volume"** error mounting/dev/sda7at/media/MyPC/__Volume:Command-Line 'mount-t "ntfs"-o "uhelper=udisk2,nodev,nosuid,uid=1000,gid=1000,dmask=0077,fmask=0177""/ dev/sda7""/media/MyPC/__Volume"' exited with non-zero exit status 14:The disk contains an unclean file system (0,0).| Metadata Kept in Windows cache,refused to mount. Failed to mount '/dev/sda7':Operation not permitted The NTFS partition is in an unsafe state.Please,resume and shutdown Windows fully(no hibernation or fast restarting),or mount the volume read-only with the 'ro' mount option. I have Windows side by side Ubuntu 13.04 in my computer and i have done (like-Shutting down Windows properly...) things as these in the notice. But it's not working.

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• Ubuntu 12.04 mdadm inactive

  - by user32274

  For a while now, my RAID 5 has ceased to work. Everytime I tried "madm --detail /dev/md127", its states all the drive and drive info, but that two of the drives have been removed. After some restarts, doing the same thing, i am getting /dev/md127 does not appear to be active. When I go into DiskUtil, I can see all 6 Hard Drives healthy and present, and i can see the Raid 5 at the bottom under Multi-disk Devices. However, the Raid says 0.0kb, and is not active. Please help and let me know how to proceed from here. I would really like to avoid rebuilding the RAID, especially because all 6 drives seem to be healthy and present. Thanks so much.

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• Nautilus won't browse my USB hard drive unless I double click it twice.

  - by agnul

  On my laptop, running 10.10, whenever I plug in a thumb drive Nautilus will add an icon on the desktop and open a file manager window with the drive contents. This does not work for my 250Mb external hard drive: the icon is added on the desktop, but no file manager window pops up. Double clicking on the icon just causes some disk activity (on the system drive) and nothing else. Double clicking another time on the icon the file manager eventually opens. At first I thought this was related to nautilus-elementary, but after removing nothing has changed. How do I even start debugging this?

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• Issues with HP Mini 110-1125NR

  - by Guga Figueiredo

  Just finished installing Ubuntu 12.04 Precise Pangolin on my HP Mini 110-1125NR and im having small, but rather irritating issues. I installed it over the Windows 7 (starter) which came with the netbook. Firstly, it will only boot from the USB flashdisk. If i try to boot from the hardrive, it goes to a black screen. Second, built-in wireless wont activate. system says its enabled and on, but the light indicator is still orange (as if its off), and i cant get a signal from my home wi-fi I havent found any solved threads for inspiration, and mos of them are pretty old (1 year +) so i thought of giving a try to see if any of you guys System is: HP Mini 110-1100 1gb memory Intel Atom CPU N270 @ 1.60GHz x 2 Os - Precise Pangolin - Ubuntu 12.04 160gb Hard disk If any of you are aware of the solutions of my issues it'd be awesome Thanks in advance for any help!

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• Web Search for a Hard Drive

  - by zecougar

  Here is the situation. Our organization has a fair amount of data in the form of documents, images, videos stored on a intranet server. We need to be able to expose these documents via some sort of search functionality on the intranet. Provide some mechanism to organize and tag the documents on hard disk. Ideally we'd also like to provide a unified search across documents on the google apps for business instance that we have. Any ideas on how to approach this problem ?

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• Opening programs very slow on ubuntu 12.10

  - by Mislav Blaževic

  When I open any program for first time after boot, it loads VERY slowly (Doesn't matter how long after boot). For example, terminal takes 2-3 seconds, skype and firefox often take much longer. If I close it and open again, it loads in reasonable time (<1 second). I got Intel Core i5-2500K CPU @ 3.30GHz, so it shouldn't be hardware issue... What is causing this? Disk benchmark: Average read time: 115.5 MB/s (100 samples) Average write time: 98.7 MB/s (100 samples) Average access time: 11.79 msec (1000 samples)

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• Ubuntu 12.04 won't boot from USB

  - by user986871

  I downloaded Ubuntu 12.04, then using the tool Startup Disk Creator i made the live usb. I checked that it's bootable Device Boot Start End Blocks Id System /dev/sdb1 * 62 15635593 7817766 c W95 FAT32 (LBA) Now on my lap top it boots nicely, but on two other machines that don't have any installation of ubuntu(no Grub) it doesn't boot. I changed the booting order so that USB is before HDD. So i think i did everything i know, but no luck. How can i use this USB drive on other devices that don't have any previous ubuntu installation.

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• Repartitioning in 14.94 To Add Home Partion

  - by Chaim Frazer

  I have 32 bit 14.04 installed as the only OS on a older Toshiba Laptop. Unfortunately, when I installed it I did not set up a \home partition, which I had intended to do. What I want to do is to set up a \home partition and to transfer the files in my current \home directory to it. I have a 14.04 Live CD, so I could reinstall 14.04. I also have GParted on a Live CD. If I use GParted, I need precise instructions about how to proceed. I have plenty of disk space (200 GB) for either alternative and know how to decide space allocation for Linux partitions. How should I proceed? Thanking you in advance. Chaim Frazer

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• Your favorite LiveCD

  - by sova

  Perhaps this is a question better suited for linux.se but since I have servers on all environments I was wondering what your favorite LiveCD is. Wiki defines this, for those unfamiliar, as a CD or DVD containing a bootable computer operating system. Live CDs are unique in that they have the ability to run a complete, modern operating system on a computer lacking mutable secondary storage, such as a hard disk drive. Live USB flash drives are similar to live CDs, but often have the added functionality of automatically and transparently writing changes back to their bootable medium. I tend to stick with Knoppix, and today I have to register the machine on the network before I can get any of my utilities running via IP. Any suggestions?

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• What makes Java so suitable for writing NoSQL Databases

  - by good_computer

  Looking at this page that aggregates the current NoSQL landscape, one can see that the majority of these projects are written in Java. Databases are complex systems software dealing with the file system, and so C/C++ would be a better choice than Java for this. (that's my thinking which might be flawed) Secondly, databases deal with transferring large amounts of data from disk to RAM -- which they call a working set. The JVM takes non-trivial amount of RAM for it's own purpose -- so it would be more efficient to use a platform that leaves lots of memory for data instead of hogging it for its own operations. The major relational databases are ALL written in C/C++ MySQL C, C++ Oracle Assembler, C, C++ SQL Server C++ PostgreSQL C SQLite C So what makes Java so popular in NoSQL world.

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