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• How to fix high Load_Cycle_Count laptop drive (TOSHIBA MK6006GAH in Vaio TX1XP)?

  - by Sam Brightman

  Hoping someone knows exactly what's going on here. It seems this drive has some combination of aggressive power saving settings and Ubuntu defaults that has massively increased the Load_Cycle_Count for the drive: https://wiki.ubuntu.com/DanielHahler/Bug59695 So the drive is now so slow that it cannot boot because it takes long enough to access the data that the kernel will not recognise it properly. I'm not worried about the data on the drive, but would really like to keep the laptop functioning. There is some indication that this is possible because the figure is still low 200,000s and most drives supposedly go to 600,000. Additionally, SMART tests pass and consider the drive healthy and without errors. But the really surprising thing was when I ran mhdd... Every single read came up red (slow) until I pressed 'R' for reset drive. I noticed the next read was normal speed, so held down 'R'. Magically the drive read perfectly for as long as I held the key BUT resumed slow (and noisy) seeking/reading after releasing. I don't think the source code to mhdd is available, so I'm not exactly sure what this means (besides, I don't know enough low-level HDD stuff either). It seems like the drive should be able to work, but is stuck trying to power save or something. There are no BIOS options on the laptop. Does anyone know how I can stop the drive from doing extremely slow/noisy operations like this? Or is constantly resetting the drive also damanging, and only causing it to work well by luck (i.e. not a suggestion that it's fixable)?

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• 150 TB and growing, but how to grow?

  - by seandavi

  My group currently has two largish storage servers, both NAS running debian linux. The first is an all-in-one 24-disk (SATA) server that is several years old. We have two hardware RAIDS set up on it with LVM over those. The second server is 64 disks divided over 4 enclosures, each a hardware RAID 6, connected via external SAS. We use XFS with LVM over that to create 100TB useable storage. All of this works pretty well, but we are outgrowing these systems. Having build two such servers and still growing, we want to build something that allows us more flexibility in terms of future growth, backup options, that behaves better under disk failure (checking the larger filesystem can take a day or more), and can stand up in a heavily concurrent environment (think small computer cluster). We do not have system administration support, so we administer all of this ourselves (we are a genomics lab). So, what we seek is a relatively low-cost, acceptable performance storage solution that will allow future growth and flexible configuration (think ZFS with different pools having different operating characteristics). We are probably outside the realm of a single NAS. We have been thinking about a combination of ZFS (on openindiana, for example) or btrfs per server with glusterfs running on top of that if we do it ourselves. What we are weighing that against is simply biting the bullet and investing in Isilon or 3Par storage solutions. Any suggestions or experiences are appreciated.

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• How do I add pcie_aspm=force to my boot options?

  - by nargo7

  I just upgraded to 11.10 from 11.04 on my laptop (I don't have Windows) by downloading from the Ubuntu website. The laptop battery is in bad condition, but I was using it with the 11.04 plugged to AC all the time, and everything was fine. After installing 11.10, the laptop seems to not notice that it is connected to AC, so it shuts down a few minutes after starting. I read that I have to type pcie_aspm=force in the boot command, so I tried accessing it by pressing the "F6" key while booting, and then the other F keys, but nothing happened. I also found that I can write that instruction in the terminal window, but I don't know in which file or location. I would appreciate some help, but I am not a computer engineer, so please write the instructions in plain English.

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• High availability virtual machines

  - by Jeremy

  I've been reading a lot about high availability virtualization, either via Hyper-V or VMWare. In that context, essentially high availabliity means that the VM is hosted by a closter of physical servers (nodes), so if one of the physical servers goes down, the VM can still be served by other physical servers. So far so good, the physical cluster and the VM itself are highly available. However if the service being provided, let's say SQL server, MSDTC, or any other service, are actually being provided by the VM image and the virtualized operating system. So I imagine that there is still a point of failure at the virtual layer that isn't accounted for. Something could happen within the virtual machine itself that the physican cluster can not account for, correct? In that instance the physican failover cluster (Hyper-V) or VMWare host, can not fail over, because the issue is not with one of the servers in the physical cluster - failing over a physical node would not do any good. Does this necessitate building a virtual failover cluster on top of the physical one, or is this not necessary? Alternatively, I suppose you could skip the phsyical clustering, and just cluster at the virtual layer (Child based failover clustering), because that should still survive a physical failure. See image below showing parent based (left), child based (right) and a combination (center). Is parent based as far as you need to go, or is child based more appropriate?

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• Socialengine installation error

  - by akopacsi

  I'm trying to install Socialengine (clean install, empty database, legal license key), but I ran into this error message at Step 3 of the installation: Step 3: Setup MySQL Database Mysqli statement execute error : Prepared statement needs to be re-prepared I found a troubleshooting artice about "Bug in MySQLi Extension Causes Apache 500 Error" at http://www.socialengine.net/blog/article?id=161&article=Bug-in-MySQLi-Extension-Causes-Apache-500-Error I uploaded the fixed file and try to install again, but it still doesn't work. It terminates at Step 3 again with the same error message. I would be very grateful if you could help me. Thanks.

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• Ubuntu 12.04 keeps rebooting after changing video settings

  - by ScottJShea

  In a pinch I had to install Ubuntu 12.04 on an HP Pavilion g6. I was not fond of the 1024 x 7678 resolution so after investigating and finding I had the intel chipset I set the below in the grub file: GRUB_GFXMODE=1366x768x32 GRUB_GFXPAYLOAD_LINUX=1366x768x32 This did not work. The system just keeps rebooting as nauseum. I powered down, inserted my Ubuntu Install USB, powered up, edited the Grub file on the disk (made sure it was the disk and not the Grub for the USB stick). Powered off and tried booting up again. Same thing. So: As a noob am I missing something in the boot to allow me into a recovery mode? (I cannot seem to get to the Grub menu) If not is there a way I can recover from this? UPDATE: Holding down the shift key after BIOS gets "GRUB Loading..." and then a reboot

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• virtual web folder served by PHP script

  - by Martin

  I am trying to configure my apache to be able to display (virtual) pages like: mywebpage.com/something1 mywebpage.com/something2 mywebpage.com/folder/something3 I would like these "somethingX" and "folder" folders to be only virtual, not physical directories. For a start it would be great to send all requests to mywebpage to one PHP script which will somehow receive the original path information (there is some SERVER array as far as I know) and call necessary PHP functions (so far I use addresses like mywebpage.com/index.php?page=blabla&otherparameters=values...). Is that possible? I am struggling with different combination, currently I am with following file in /etc/apache2/conf.d/something.conf (not working of course). What is the correct way to proceed? Thanks. <Location /myweb> SetHandler my-handler Action my-handler /srv/www/htdocs/myweb/product.php virtual </Location> My pages are in /srv/www/htdocs/myweb. I tried with Location, with Directory, with Action and SetHandler, with AddHandler... ;-) Some configurations were ignored, some caused "object not found" with nothing relevant in error log.

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• Fixing a broken toolbox (In Visual Studio 2010 SP1)

  - by mbcrump

  I was recently running into a situation where every time I opened Visual Studio 2010 SP1, the following message would appear for about 60 seconds or so: "Loading toolbox content from package Microsoft.VisualStudio.IDE.Toolbox.ControlInstaller.ToolboxInstallerPackage '{2C98B35-07DA-45F1-96A3-BE55D91C8D7A}'" After finally get fed up with the issue, I started researching it and decided that I’d share the steps that I took to resolve it below: I first made a complete backup of my registry. I then removed the following key: [HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\VisualStudio\10.0\Packages\{2c298b35-07da-45f1-96a3-be55d91c8d7a}] I went to the following directory: C:\Users\Your Name Here\AppData\Local\Microsoft\VisualStudio\10.0\ and created a folder called bk and moved the .tbd files to that folder (they are hidden so you will have to show all files). I then removed the .tbd files in the root directory. I then launched Visual Studio 2010 SP1 again and it recreated those files and the problem was gone. Anyways, I hope this helps someone with a similar problem. I created this blog partially for myself but it is always nice to help my fellow developer.  Thanks for reading. Subscribe to my feed

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• ec2 instance won't boot!

  - by TheToolBox

  So I had a server lose connection while updating to 14.04LTS. Foolishly, it ended up getting rebooted, and now I'm here. I disconnected the volume and mounted it on another system, chrooted it, and updated the kernel. Still no dice. Any idea what the problem could be? Thanks in advance! The instance log is below: ******************* BLKFRONT for device/vbd/2049 ********** backend at /local/domain/0/backend/vbd/3005/2049 Failed to read /local/domain/0/backend/vbd/3005/2049/feature-barrier. Failed to read /local/domain/0/backend/vbd/3005/2049/feature-flush-cache. 16777216 sectors of 512 bytes ************************** [H[J Booting 'Ubuntu 14.04 LTS, memtest86+' root (hd0) Filesystem type is ext2fs, using whole disk kernel /boot/memtest86+.bin ============= Init TPM Front ================ Tpmfront:Error Unable to read device/vtpm/0/backend-id during tpmfront initialization! error = ENOENT Tpmfront:Info Shutting down tpmfront xc: error: panic: xc_dom_core.c:621: xc_dom_find_loader: no loader found: Invalid kernel xc_dom_parse_image returned -1 close(3) Error 9: Unknown boot failure Press any key to continue...

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• Use ctrl+space to invoke clang_complete

  - by tsurko

  I've setup a simple vim environment for C++ development and I use clang_complete for code completion. I'm wondering if there is a way to invoke clang_complete with ctrl+space (as in Eclipse for example)? Currently it is invoked with C-X C-U, which is not very convenient. In the plugin code I saw this: inoremap <expr> <buffer> <C-X><C-U> <SID>LaunchCompletion() So I tried something like this in my vimrc: inoremap <expr> <buffer> <C-Space> <SID>LaunchCompletion() Of course it didn't work:) I read vim's doc about key mapping. but no good. Have you got any suggestions what I'm doing wrong?

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• Centralized backup method recommendation for SMEs with various OSes

  - by Akinator

  Hi I was wondering what in your opinion is the "best" method for having "everything" backed-up in the following situation. We are a SMEs with 10 computers in total. Three of those computers are MACs The rest are windows (1 vista, 4 win7 and 2 XPs) I'm very open to what the method should be but you should also consider the follwing: Very limited resources Quite "small" bandwidth (4 MBs for all (download) 0.4 MBs (upload, yep, thats it)- though this might get, a little bit better) One of the main thing to back up would be the mails, considerations: All windows computers use outlook, mainly 2003 There is one mac that uses outlook too (for mac of course - not 2011 yet) We also have to backup the files: Not a huge amount Very few very big files Very organizes (by machine) What I would like is to hear your opinions as to which would be the best method (or combination of methods - preferably one of course) considering. We are not sure what do we need and I'm open to suggestions, though an online (cloud based applications) would be great, remember the the bandwidth is unbearable. Last think to consider, it that we would like to do weekly updates (unless the method is very easy of course). Thanks in advance!! I tried to be as specific as possible, but if anything is needed I'll gladly update, please ask for any clarification needed! Please avoid any answers like upgrade all to windows 7 and throw away your macs :) our's may not be an ideal situation, but it is what it is, and right now, it would be impossible for us to change it for a lot of circumstances.

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• Can Dovecot IMAP automatically create Maildir folders for new (virtual) users?

  - by user233441

  everyone. I am learning to set up a dovecot home IMAP server using a virtual Ubuntu 12.04 machine. My intention is eventually to have a home server that uses POP3 to take email from several addresses and remove them from my ISP's servers, while making them accessible through a home IMAP server (this is similar to the setup described at https://help.ubuntu.com/community/POP3Aggregator, which explains how to set up the system with dovecot version 1, and is thus outdated). I intend to use the ISP's server directly when sending messages, and to BCC all sent messages to myself. I've completed the basic set up of the test server: getmail uses POP3 to fetch messages from two test email accounts, and successfully delivers them to the respective Maildir-style new folders on the virtual machine. Dovecot then successfully sees these messages. I have two questions: 1) I had to set up new, cur, and tmp folders for both of the test accounts manually to get this setup to work. Is there a way to get dovecot to create these Maildir folders automatically when I create a new virtual user account (e.g., when I add a user and password combination to my dovecot password file), or is it expected that I write a bash script to automate that task? 2) I would welcome any comments you have on how this approach could be improved as I learn to set it up. My motivations with this approach are 1) to enable archiving/storing emails from several hosting providers that impose a cap on server storage, and 2) to give me somewhat greater control over email storage without requiring that I set up and administrate a mail server from scratch (which I'm not yet prepared to do) (this follows the recommendations at https://ssd.eff.org/tech/email). Thank you!

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• YELP does not work right

  - by DWolfman

  When I click on DashHome then click on the questionmark, It brings up the help system. However when I enter a command to search on it tells me this does not exist. From what I understand the engine is YELP and is suppose to search everything including the man pages. However, I can't get it to find anything. I tried to install the yelp package but it tells me the one that is installed is the latest version. Am I doing something wrong? Everything I read says hitting the F1 key is suppose to bring up yelp but Thanks in advance. Dave

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• BIOS Always Freezes Instantly

  - by Louis

  I'm not sure if this is necessarily a Ubuntu question, but I've only had the problem since I installed 12.10. When I turn my computer on, the BIOS screen comes up as usual and... nothing else. When I press any key, I hear a loud beep and there's no response. I've tried looking for similar problems, but in most cases people are at least able to interact with their BIOS even if their OS doesn't load. It seems as though it's just completely freezing as soon as I turn it on.

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• VS2012 Launch Event &ndash; Combating Bugs And Poor Performance In Production

  - by Tarun Arora

  I presented a session “A techies guide to combating bugs & poor performance in production” at the Microsoft IT Visual Studio Launch event.  The key message was to demonstrate what common production issues (non-reproducible bugs and poor performance) techie’s run into and how the tooling in Visual Studio can help you efficiently tackle these issues. Remember, a Techie without efficient tools is only half the good!                                                       A techies guide to combating bugs & poor performance in production from Avanade Enjoy!

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• Ubuntu 12.04 UEFI Partition Boot Fail

  - by John

  I've built a new system, and I want to take full advantage of UEFI and Ubuntu. So I install Ubuntu, and try to boot from it, and my BIOS (Asus EZ Mode / Advanced Mode) simply says "No bootable medium found. Insert Bootable Medium and press any key to try again." So I've reinstalled several times, without any failures, Ubuntu IS installed, and I've tried Ubuntu Boot Repair (link below) and nothing I do seems to work. My Build: Asus f1a75m pro AMD A8 APU Samsung 1TB HDD 8GB G-Skill Ripjaws X (1866) Partitions and Ubuntu Boot Repair here

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• Need to test .properties one by one in every possibility?

  - by ??? Shengyuan Lu

  For example, there are some key-value configuration in .properties file. Such like someFeatureEnable=true. It must be bool type value which will be parsed by framework, in my case it's typical Java Spring configuration. Spring will handle the configuration and throw Exception when users set someFeatureEnable=123. My question is: if there many properties in .properties file, Is it worth testing them one by one? It's quite troublesome and low priority. The .properties file is always configured by tech administrator stuff. Limited chances that they will mess up the configuration. Thanks!

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• Creating Objects

  - by user1424667

  I have a general coding standard question. Is it bad practice to initialize and create an object in multiple methods depending on the outcome of a users choice. So for example if the user quits a poker game, create the poker hand with the cards the user has received, even if < 5, and if the user played till the end create object to show completed hand to show outcome of the game. The key is that the object will only be created once in actuality, there are just different paths and parameters is will receive depending on if the user folded, or played on to the showdown.

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• Dash doesn't launch Gedit at the first try

  - by GUI Junkie

  I'm curious to find out what's going on here. Push the [windows] key -- Dash pops up. Type 'ge' -- 'Text editor' appears. [Enter] -- Nothing happens. With any other program, it launches the program. Repeat the steps and gedit launches. From terminal, gedit doesn't start. In the system monitor, it's 'sleeping'. This happens in my session, in my wife's session on the same computer, gedit runs. Any idea why gedit sleeps at the first launch?

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• Verifying that a user comes from a 'partner' site?

  - by matt_tm

  We're building a Drupal module that is going to be given to trusted 'corporate partners'. When a user clicks on a link, he should be redirected to our site as if he's a logged in user. How should I verify that the user is indeed coming from that site? It does not look like 'HTTP_REFERER' is enough because it appears it can be faked. We are providing these partner sites with API Keys. If I receive the API-key as a POST value, sent over https, would that be a sufficient indicator that the user is a genuine partner-site user?

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• Stairway to T-SQL DML Level 4: The Mathematics of SQL: Part 1

  A relational database contains tables that relate to each other by key values. When querying data from these related tables you may choose to select data from a single table or many tables. If you select data from many tables, you normally join those tables together using specified join criteria. The concepts of selecting data from tables and joining tables together is all about managing and manipulating sets of data. In Level 4 of this Stairway we will explore the concepts of set theory and mathematical operators to join, merge, and return data from multiple SQL Server tables. Get Smart with SQL Backup Pro Powerful centralised management, encryption and more.SQL Backup Pro was the smartest kid at school Discover why.

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• Miss Oracle Open World? View the PeopleSoft Roadmap Presentation Here

  - by John Webb

  If you were unable to attend Oracle Open World in September, you missed out on some important PeopleSoft messages.   Don't despair!  You now have a chance to receive an update on PeopleSoft's presence at Oracle OpenWorld 2013 and the key messages delivered there. You can view the “PeopleSoft Update and Roadmap” webcast found here on the Quest Users Group site.  (Note: this is available with a FREE subscriber account.  Anyone can sign up here at no cost. This webcast recording presents the significant adoption and momentum behind PeopleSoft 9.2.  Viewers will also learn about the new release model for continuously delivering new capabilities to PeopleSoft customers at a lower cost enabled by the new PeopleSoft Update Manager.  There are also compelling live demonstrations of the major investment areas for PeopleSoft including a new PeopleSoft user experience enabling mobile solutions as well as In-Memory PeopleSoft applications. You can view all presentations ns in the Oracle Open World 2013 Content Catalog.

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• Trouble installing 12.04 from cd, blank screen with cursor

  - by Master Morality

  I should preface this with saying that this is not my first rodeo. I started playing with Linux in 1999 (Red Hat) and I'm currently typing this on a ThinkPad running 12.04... When I put in the live cd, I boots, and I can get to the option menu to decide whether to install/run etc, but at any point beyond that I get only a single caret. I can type stuff in, but it goes no where. I've tried the usual stuff like running with nomodeset (thinking it was the intel HD400 graphics, but it is integrated graphics...) here is the setup: ASUS p8z77 pro (with the Atheros AR9485 wifi supposedly, but I'm not that far yet) i7 3370k 8gig X 2 G.Skill Crucial M4 (256 gig) LG Super-multi DVD re-writer no video card UPDATE: I though may be it was a bad image on the CD, so I downloaded another iso, and used a USB disk. now it boots to a blank screen. I can see the "press any key to get options" screen, but after that, it just goes to a blank screen.

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• How to enable Start Button in Windows 8?

  - by Gopinath

  Microsoft taken a bold move in removing Start button in Windows 8 operating system and replacing it with Metro styled Start screen. Since the early days of Microsoft Windows, all the PC users are used to Start button and missing it all of sudden in Windows 8 may disappointed many. If you are one among the users who is disappointed with missing Windows 8 button, here is a quick way to enable it back To restore Start menu in Windows 8 all you have to do is to download and install ViStart application. This freeware application magically brings back the missing Start orbit and also when you press Windows Key, it opens up the Start menu instead of switching to Windows 8 Start Screen. Note: While installation the application may ask you to install toolbars and third party application, I suggest you to uncheck them as they may change your search settings and default browser.  They may not be harmful but effects your browsing experience.

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• How to change keyboard sleep button to hibernate?

  - by Allu2

  I have a keyboard with a "sleep" button that does indeed make my computer go to sleep. The problem is that Ubuntu can't really handle sleep on my computer, causing it go into a non-responsive mode, having the CPU fan spinning at full speed and it stops receiving any input. Hibernation instead works mainly as it should. I would like to set the sleep key to hibernate, but the keyboard settings' hotkeys tab doesn't have this "sleep" keybinding and though I could make new one with hibernate --force as the command, it would require root rights to run. How can I change the keyboard sleep button action to hibernate?

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