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• Should I disable write caching on my Windows 2008 VM?

  - by javano

  I have a Windows Server 2008 x64 Standard virtual machine that runs on a machine with a hardware RAID controller, a Perc 6/i, which has a battery on-board. Doing everything I can for additional performance, I think I should disable this. Is this very dangerous though? My understand is that Battery Backed Write Caching gives a performance boost to the host OS, telling it the write was complete when they are still sitting in flash waiting to be written. However, I can't see how it would be detrimental to performance, but is there a gain (even if marginal) to enabling it / disabling it? P.s. There machine has a backup power. Here is a screen shot for clarification:

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• What's wrong with my ext4 partition?

  - by bumbling fool

  What is wrong with this picture? Top is output from "df -h", bottom is gparted. I suspect I'm missing a lot of free space. No problems other than that (yet). Can somebody suggest the best (non-destructive) way to correct this? sudo dumpe2fs -h /dev/sda3: (source http://pastebin.com/nAvrdT4E) Filesystem volume name: <none> Last mounted on: / Filesystem UUID: 9f6eff64-60d7-4eec-81d5-1e8acd818b38 Filesystem magic number: 0xEF53 Filesystem revision #: 1 (dynamic) Filesystem features: has_journal ext_attr resize_inode dir_index filetype needs_recovery extent flex_bg sparse_super large_file huge_file uninit_bg dir_nlink extra_isize Filesystem flags: signed_directory_hash Default mount options: (none) Filesystem state: clean Errors behavior: Continue Filesystem OS type: Linux Inode count: 1602496 Block count: 6406144 Reserved block count: 320306 Free blocks: 4842284 Free inodes: 1361222 First block: 0 Block size: 4096 Fragment size: 4096 Reserved GDT blocks: 1022 Blocks per group: 32768 Fragments per group: 32768 Inodes per group: 8176 Inode blocks per group: 511 RAID stride: 32692 Flex block group size: 16 Filesystem created: Sun Nov 8 18:18:13 2009 Last mount time: Tue Mar 1 01:04:27 2011 Last write time: Mon Feb 28 04:27:34 2011 Mount count: 16 Maximum mount count: 28 Last checked: Thu Feb 24 06:23:39 2011 Check interval: 15552000 (6 months) Next check after: Tue Aug 23 07:23:39 2011 Lifetime writes: 227 GB Reserved blocks uid: 0 (user root) Reserved blocks gid: 0 (group root) First inode: 11 Inode size: 256 Required extra isize: 28 Desired extra isize: 28 Journal inode: 8 First orphan inode: 268015 Default directory hash: half_md4 Directory Hash Seed: cc101517-e617-482b-a883-a72919419c84 Journal backup: inode blocks Journal features: journal_incompat_revoke Journal size: 128M Journal length: 32768 Journal sequence: 0x001d3000 Journal start: 7787 fdisk and parted output per requests: http://pastebin.com/EGVH7Ken

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• cPanel webmail roundcube direct login

  - by Jinx

  I have a small web hosting that I offer along my web development/design services. I run cent os with cPanel on it and I'd like to have my clients use roundcube by default without ever seeing cpanels page for picking webmail app (squirrel/horde/roundcube). I manage everything on the server so they don't need access to additional features that can be found on that page. So basically, how can I make www.somepage.com/webmail go directly to roundcube for every single account on my server. I know how to do it manually for each account, but that's a pain to do. Thanks!

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• is a mini PCIe SSD worth it?

  - by Narcolapser

  Question: Is getting a mini-PCIe worth investing in? Info: I have a an Acer Aspire 1 n270. It has this mini PCIe slot that is just sitting there empty. I would like to change this, and I would like to speed up my boot time. So I've been considering getting a mini-PCIe SSD. They are about the same price as faster same size drives of the 2.5" variation. The advantage of the mini-PCIe card is that I can have my HDD still. So I have good boot time, but still have the storage of my HDD. What I want to know is: will this allow me to spin down the HDD more often allowing me to save power? Will the OS (Ubuntu 10.04 LTS) see them as separate drives? Is there anything that the mini-PCIe slot could be better used for? Thanks. ~n

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• Mighty Mouse is jumping around on screen

  - by Nils Riedemann

  Hi there, I have a really annoying problem with my mighty mouse since a couple of weeks now. When moving my mouse (mightymouse) sometimes it jumps (about once in 30minutes) directly to a (propably) random spot of my screen. I cleaned the mightymouse several times and there is definately no hair or the like, and the desk is not the problem as well - I have the same problem with my other mighty mouse at home. Since I don't have any other mouse i couldn't test whether this relates to the mighty mouse or the mouse in general. Has anyone experienced such issues as well? Is there a solution? Greetings btw: Mac OS X 10.6.4

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• Texture and Pattern Generator

  - by Ara

  I use Adobe Fireworks for its Texture and Pattern tools to make things like this: http://i.imgur.com/sci7Roc.png and then i copy-paste it to Flash Professional (Adobe) to use there. but fireworks is so slow and buggy is there a free or commercial software to do this simple Texture / Pattern thing easily? Texture (like the second image above) Patter and Texture (like the first one) Transparent Texture, so the background color would be visible instead of the white lines in second image The ability to copy and paste it (as PNG 32 or any alpha transparent image) so i don't have to save it first and then import it to flash * I Use Mac OS X 10.8.4 *

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• Ubuntu 13.10 - Black screen after login session

  - by AlexKibo88

  Yesterday, the system asked me if I wanted to upgrade to 13.10 from 13.04. Since that was the first time for me, I decided to proceed and ran the installation without worrying about it. After the system completed the upgrade, my PC was rebooted and the new version of Ubuntu signalled that the desktop would have run in low graphigs mode due to a graphical driver problem. I couldn't manage to fix the issue, so I continued with the low graphics mode... but nothing showed up. I wasn't even able to access one of the TTYs. So I ended up rebooting the system and accessing the recovery mode. I uninstalled all my ATI graphics drivers along with xorg-server and fglrx. After rebooting, I was able to access the login session of Ubuntu, but after confirming my credentials, the desktop wouldn't show up, but instead a black screen appeared with the following message: System program problem detected I couldn't figure out the problem and tried to restore/re-install all the graphics elements I knew. but nothing worked. The screen still remains black and won't show the icons nor the Unity bar. What would you advise me to do? Should I try launching a fresh install of the OS from the live CD? Thank you.

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• Is there a server distro with the capability of syncing live data to multiple machines?

  - by Adam Hart

  Scenario: I have a main server that is used for pagebuilding/storing master data, and is accessed by a few clients on site. This company also has multiple branches with their own server that that connect to locally, but need to work with all the same data, and have it synchronized across all servers in real (or close) time. Is there a way/specific server OS that can sync live data across all of these servers? These servers would also need to be able to: Configure AFP, FTP, CIFS, SMB Continue to host their web server and database server in a Microsoft environment, but move the file server off to commodity hardware Just wondering if this is even possible.

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• Where&rsquo;s my start button?

  - by Dennis Vroegop

  I have to be honest here for a moment. The one thing people most complain about when they talk about Windows 8 is that they miss the Start Button. You know, that dreaded thing that everybody hated when it was introduced… I usually don’t go into these kinds of discussions unless I am personally involved but this one I cannot let go. Why are people doing this? Windows 8 is a great OS. They have changed, updated and perfected so many things so there is enough to talk or write about. Yet, all articles or discussions come down to “Where’s my start button?” In order to save myself from having to explain this every single time I wrote this post and from now on I will simply refer to this blog when I get asked that question. Here it is. Your start menu is there. It’s right in front of your nose. It’s two dimensional, it’s got huge buttons (although they are more than just buttons, they’re alive and therefore called Live Tiles). Just go through those tiles and click what ever you want to start up. Don’t want to look for an item? Just start typing. Really it is that simple. When you are on the start screen just start typing (part of) the name of the program you want and you’ll find it.  As you see in the attached example I started typing “word” and it found Word, Wordfeud, Wordament etc. If you want to find something else besides a program (say you want to change the region you’re in) just click on Settings (it will already show you how many hits there are in that section). People, my request is: dive into something before you complain about it. Look around. This feature is so much easier to use than the old stuff. But you have to know about it. So. I won’t get into this discussion anymore.

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• xkb layouts not working (in KDE?) after upgrade from Ubuntu 9.10 to 10.04

  - by Alan

  I customised my keyboard layout in 9.10 by editing the appropriate /usr/share/X11/xkb/symbols/ file. After upgrading to 10.04 I noticed it had overwritten all my modifications, so I recovered the layout and overwrote the symbol file's base entry. Sadly KDE (and, presumably, the entire OS) seems to ignore the files altogether. The help files don't mention anything about modifying layouts anyway (and the layout switcher seems to be using setxkbmap, which uses the above path according to its man page), so I'm at a bit of a loss. Do I need to compile this into some other format somehow or how do I get it to work?

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• please help me understand libraries/includes

  - by fiftyeight

  I'm trying to understand how libraries work. for example I downloaded a tarball and extracted it. Now I do "./configure", it searches in pre-defined directories from what I understand for certain library files. What does it do then? it creates a makefile, and the makefile contains the paths to these libraries? than I do "make", it complies the source code and hard-codes the locations of the libraries? am I correct? I do not really understand if libraries are files with pre-defined paths or the OS somehow gives access to the libraries through system calls. another example, I complied something on my computer than moved it to a remote server, the executable needs mysql libraries to work, the server has mysql but for some reason when execute the file it tells me "can't find libmysqlclient.so.16". is there a solution for this? is there a way to know where is tries to locate this file or give it another path? I can't compile it on the server since it has no compiler and I don't have root access to install packages last question is if in the sequence "./configure","make","make install" the "make install" command is the only one that actually puts files outside the directory in which these files reside? if for example the software will be installed in /usr/local/ is the "make install" command the only one that will require "sudo" before it? let me see if I got it correctly: "./configure" creates the Makefile according to the location of various files on your system. "make" compiles the source code according to this makefile. and "make install" moves the files to their appropriate location. I know this has been very long I thank anyone who had the patience to read my question :)

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• install PECL JSON in PHP 5.04

  - by Radu Maris

  It's OK (compatible) to install PECL native JSON (from here) in PHP 5.0.4, on a production server running FC4 where unfortunately I cannot update PHP to at least 5.2 ? If there is a good chance to screw up PHP instalation on the server, I will not try to install it, and I will stick to Service JSON ( http ://svn.php.net/viewvc/pear/packages/Services_JSON/trunk/ ) In documentation ( http ://aurore.net/projects/php-json/ ) I have found: A simple ./configure; make; make install should do the trick. Make sure to add an extension=json.so line to your php.ini/php.d. (but I can't find anythink about compatible versions of PHP) Thank you. (Please don't tell me to update the OS and PHP, beacause it's not my decision :( )

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• Cam being used by another application

  - by w35t

  On my laptop doesn't work any camera. I get error: "Camera being used by another application"". I don`t known which program using it. I tried use software like "SplitCam" or "ManyCam". Also I reinstalled K-lite codec to newest, but still getting this error. I get the same error when I turn my Canon video camera to laptop using firewire cable. OS: Windows 7 x64 Camera: Creative (i don`t find which model) Laptop: DELL inspiron 1520 Error when I tried open SplitCam: http://f.imagehost.org/0759/Clipboard03.png SplitCam error when repair it: http://i.imagehost.org/0607/split.png ManyCam just not responding. SonyVegas error: http://f.imagehost.org/0227/Clipboard05.png Sorry for my English. Thanks for any help.

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• Laptop burned after heavy OpenGL usage. Is there hope?

  - by leladax

  After programming for OpenGL and a 'slow OS' case for a couple of minutes the screen went blank. I shut it down with forcing it with the shutdown key and now there's no led at all with battery or AC, it doesn't start at all, it's totally dead. It's most certainly not the AC adapter since that didn't show at first, it doesn't start a led at all and if the AC is connected it does a very slight and faint clicking noise (one has to have his ear next to it to hear it, near the AC connector). Is there any hope? I suppose it's a burned motherboard. I suspected a burned GPU but that would still leave the leds at least lid or at least attempting to start up. Now it's totally dead. It's a TOSHIBA satellite x200-219. It has no warranty, as it's more than 2 years since purchase.

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• Drive Shows No Files But Half Space Gone

  - by Chance Robertson

  I have a 500 GB USB drive. When I go to Windows Explorer or Finder, the drive shows that about half the drive is free. However, when I open either drive in Windows 7 or OS X, no files how up. I have tried to look at the files through the command line and nothing shows. A while back, I hooked it up to my MacBookPro and there was a quick message that said the drive was not ejected properly, blah, blah. And of course I did not read the message and hit OK. It there any way to get back my files from the drive?

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• How to securely delete files stored on a SSD?

  - by Chris Neuroth

  From a (very long, but definitely worth to read) article on SSDs: When you delete a file in your OS, there is no reaction from either a hard drive or SSD. It isn’t until you overwrite the sector (on a hard drive) or page (on a SSD) that you actually lose the data. File recovery programs use this property to their advantage and that’s how they help you recover deleted files. The key distinction between HDDs and SSDs however is what happens when you overwrite a file. While a HDD can simply write the new data to the same sector, a SSD will allocate a new (or previously used) page for the overwritten data. The page that contains the now invalid data will simply be marked as invalid and at some point it’ll get erased. So, what would be the best way to securely erase files stored on a SSD? Overwriting with random data as we are used to from hard disks (e.g. using the "shred" utility) won't work unless you overwrite the WHOLE drive...

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• Sync KeePassX with KeePass2

  - by bioShark

  Simply put: In Ubuntu I am using KeePassX and in Windows KeePass2. In am not able to export/import passwords from one to another. I would prefer to use the same database, but I don't really know how. If there is no possibility to sync the 2, can you recommend another password vault, which is able to sync passwords from 2 OS, using a shared DB. Thanks I am using Ubuntu 12.04 and Win 7. Edit: I have noticed that KeePass2 is available in the Software Center, so I have installed it, and I can successfully open my Win7 database. Now I will migrate my KeePassX passwords. I am seeing now a huge difference in the looks. While KeePassX doesn't exactly have Ubuntu like look&feel, it's 100 times more elegant than the interface KeePass2 comes with. Well, maybe that was my initial decision for installing KeePassX on my Ubuntu machine. I can't remember. @fossfreedom, please add your comment as a response, so that I can accept it. Thank for the suggestion

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• Wifi not working on Acer Aspire One D270

  - by Dani

  brand new baby linux user here, never used Ubuntu or any other linux OS before, so be gentle and use short words! I installed Ubuntu 12.04 on my new Acer Aspire One D270-F61C/KF netbook (it's a Japanese computer which had Japanese windows preinstalled, and I decided to take the plunge and try Ubuntu because English Windows costs the earth and stars). Wifi isn't working; I enter my wireless password, it tries to connect for a while, then asks for my password again. And KEEPS ASKING, every few minutes. Wired connection works fine. Wireless card is a Broadcom BCM4313; I have the "additional drivers" checked and installed (I tried unchecking and then reinstalling them in case that would help, no joy, and now my home wifi connection isn't showing up in the list of available connections, argh). I've done a lot of googling and I gather there's a lot of issues with Broadcom cards, but some of the answers are for earlier ubuntu builds and many of them are a bit confusing for a new user. I gather I need to try installing some new drivers other than the proprietary ones provided, but I'm having trouble figuring out how that's done. Anyone got some simple, step by step instructions for me? Please bear in mind, TOTAL N00B. (EDIT): OKAY, got it fixed finally; after suggestions on the Ubuntu forums and messing around with drivers, what finally worked was installing Wicd. Not... using Wicd, for some reason, just installing it fixed it. ...I CHOOSE NOT TO QUESTION IT.

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• Combine drivers from multiple Win7 installs to single image

  - by MikeyB

  I need to prepare a Windows 7 image with drivers for multiple systems (Lenovo laptops). I currently have an image prepared on one laptop type but need to grab the drivers appropriate for the other laptop types as well to ensure that it works on all systems. From what I can tell, the procedure will be: create a boot CD with imageX take a .wim image prepared on the first type of systems take .wim images from the other systems mount the other images in WAIK extract the drivers from the other images inject the drivers into the first .wim boot a system with the boot CD and redeploy the updated .wim image into the Windows partition take an image of the drive with usual imaging tools This all seems a little too convoluted, but I'm willing to do it to get the proper drivers into the image. This is (seemingly) necessarily complicated by having more than one OS on the disk image. Am I on the right track?

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• Help imorting video from old Sony Digital Tape handycam

  - by thatryan

  Friend gave me their OLD handycam and a bunch of tapes asking me to put them on a DVD. The model is Sony DCR-TVR103 and it records onto Hi8 Digital tapes. It has a firewire port also. I am trying to use import function in iMovie on OS X 10.6. Every import though the video is super fast, like playing in fast forward. Ever seen anything like this? How can I import this video? Thank you.

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• Which is generally considered faster or best practice: symlinks or Apache aliases?

  - by Christopher W. Allen-Poole

  I'm curious as to what most people's views are on this subject. Personally, I will almost always prefer symlinks unless I have no other option -- I find that it is far more obvious when someone is navigating the file system, but, on the other hand aliasing is more platform independent. Windows XP, for example, doesn't have anything remotely comparable to symlinks (NTFS junctions are not interpreted correctly by at least some environments), which means that anything which relies on symlinks in a *nix based system cannot be transferred. (I know that Windows 64x OS's have symlinks, but I've not seen if they can be read correctly by the environments previously mentioned) In addition to this, I was also wondering which is considered faster. Is this even possible to know? Do you have a conjecture? I would imagine that since symlinks are generally more low-level than Apache it would make sense that they would be referenced faster, but, on the other hand, I would guess that Apache is required to do a lookup in either case so it would be disk read dependent.

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• Slow download speeds on MacBook Pro

  - by Austin

  Just as the title says, I am getting very low download speeds on my MacBook Pro. I did a speed test at speedtest.net, and am getting 7 MbPS down, .5 up. However, I can only seem to get 270 KB PS max (averaging 100 K), whether on my school's network or on my home network, wired or wireless. I am on Mac OS X 10.5.8, with Google Chrome. My ethernet settings (under System Preferences - Network - Ethernet Connection - Advanced - Ethernet) are set to "Configure Automatically", "Speed: 100TX", "Duplex: full-duplex, flow-control", and "MTU: Standard (1500)". As far as I can tell, there are no throttles or anything between here and the ISP, so... Any ideas on why I'm getting such low download speeds?

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• Computer cannot detect hard disk

  - by Nrew

  Details: BIOS: AMI Bios, set primary master to Auto OS: Windows XP Sp2 Memory: 384 Mb Processor: Pentium 3 yeah this one is really very old. And some of the capacitors in the motherboard are already bulging. It detected the hdd yesterday when were trying to fix it and install xp. But today it cannot boot and said: Boot failure. What can you suggest that I would do to revive this old machine. What would be the problem, is it the hdd, the ide cable or the motherboard.

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• Importing Outlook 2007 rules error

  - by Alex

  I'm trying to move an Outlook 2007 account (POP3, no Exchange) to a new machine and I'm having trouble importing the rules from the old machine to the new one. Here is the deal, I imported the .pst file on the new machine but when I try to import the rules, every single one of them brakes. The folders and sub-folders hierarchy is preserved upon the import of the .pst but the rules don't point to the right folder in the respective rule. Instead it points to "the specified folder". Same OS (Windows XP), same mail client (Outlook 2007) and the .psf file is about 8 GB. Any help i greatly appreciated.

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• WiFi can't reconnect after suspend/hibernate on Ubuntu 12.04.1

  - by CyberOPS

  I've had this problem since Ubuntu 11.10 (my first install) but I was able to get around this issue with this answer. When I updated to Ubuntu 12.04 I encrypted the home folder, so I wasn't able to suspend or hibernate anymore (disappointing :l). Because of this and another issue I had1, I chose to reinstall. Sometime after I reinstalled, I was reminded about reconnection issue because it wasn't working after I suspended. I tried to use the same fix as before but I couldn't get it to work. I've also tried a couple other different fixes I found around the web but they didn't work. Since I'm new to linux, I'm gonna have a tough time figuring this out by myself. So does anyone know how, or what I need to figure out how, to fix this? Info: Computer: HP Pavilion dv6t-6b00 CTO Quad Edition Entertainment Notebook PC Network Card: Intel® Centrino® Wireless-N 1000 OS: Ubuntu 12.04.1 (x64) dual booting with Windows 7 (x64) (Not using Wubi) Wireless Card Driver: Intel Wireless WiFi Link drivers for Linux (iwlwifi) 1 - ntfs-config caused colord to crash on startup, even after NTFS-Config was removed.

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