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• Will Windows Barf on Constant Video Driver Overwrite?

  - by Maarx

  So, I've got a Win7 64-bit gaming PC with GTX 260's. Recently, StarCraft 2 had an issue with flickering, which NVidia fixed with a new set of drivers. However, these new drivers induce unplayable graphical errors with Neverwinter Nights 2, something me and my friends still play from time to time. I am seeking advice on the "best" way to rectify this situation, to be able to switch between two driver releases, without compromising the stability of my system (if Windows stability isn't an oxymoron). I'm wondering if Windows 7 is structured in such a way that I can constantly reinstall these two sets of drivers back and forth overtop each other, possibly six or eight times a day, without very quickly driving myself to reformat to maintain that "just like new" performance. I'm loathe to have to reformat the drive and maintain two copies of the operating system, but I'll do it if I have to.

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• Highly robust and scalable search server needed for managing and analyze files

  - by ChrisBenyamin

  Hi everybody, I am looking for a professional search server system with functionality, like e.g. solr http://lucene.apache.org/solr/ holds. Place of action should be a centralized location, whereon many hosts would request data. Furthermore the system should be extensible for implementing statistical procedures. (e.g. a kind of heatmap (or common diagrams) of a (or more) file(s) (which has a guid), that is spread on different hosts.) This software doesn't have to be opensource. thanks. chris

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• Is it safe to change the time on hosting VM server?

  - by hydroparadise

  So, I noticed there's about a 10 minute drift on my VM hosting server from what time it's supposed to be. In traditional environments, I would just restart the system (and change the BIOS time if necassary). The hosting server is Ubuntu 12.04. Undertsanding that some process could be time sensitive (NTP?), I was wondering how this might affect the relation between the host and hosted system (currently hosting 4: 3 Ubuntu 12.04 servers with one being a web server, and 1 Windows Server 2008 file server). I am using Virtual Box 4 with it's headless option. Ultimately, I am trying to avoid from shutting down the host (which ultimately mean shutthing down the other hosted systems). Is this safe?

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• wifi connection turns off oll the time

  - by er-v

  Hello! I realy need help with one strange problem. I have a wifi network in my appartment with wireless N home router Trendnet tew-652BRP. Everething work fine for three of my laptops, but I have one PC with D-Link DWA-140 adapter. It looses connection 2-3 times in 5 minutes. There is following messages in my system log when it does so: The browser has forced an election on network \Device\NetBT_Tcpip_{9537A5C1-3B43-4C56-B94C-CE69A257C3AD} because a master browser was stopped. The TCP/IP NetBIOS Helper service was successfully sent a stop control. The reason specified was: 0x40030011 [Operating System: Network Connectivity (Planned)] Comment: None The TCP/IP NetBIOS Helper service entered the stopped state. in order of appearence. How can I stop it? I have the latest driver installed.

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• How to secure svn+ssh checkout users?

  - by vvanscherpenseel

  All our SVN repositories are hosted on a dedicated machine on which all the developers have access. Every now and then we need to checkout a repository on a machine we don't own or operate ourselves. Currently we all use our own system (SSH) account for this, but instead I would like to use some generic 'checkoutsvn' user that can be used for this. This user is only used for checking out from a repository, but should not be allowed to log in to the system (no shell access). I tried to do this by setting the default shell of that account to /sbin/nologin but then SVN fails, as apparently svn+ssh requires shell access. How do you do this? Is there a good solution for this?

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• Throwing TRIM support in Ubuntu guest at Win7-Virtualbox host

  - by user141472

  I have VirtualBox 4.1.14 on Windows 7 as host, and Ubuntu server 11.10 as guest. System was installed at traditional HDD years ago (and upgraded later), but now it's at SSD as expanding drive. There is "AHCI" and "it's SSD" features enabled in SATA controller. Problem is, this expanding drive growth to it's almost max size (90% of it), but actually in VM only about 50% spent. Also, guest VM does not recognize /dev/sda as SSD, /sys/block/sda/queue/rotational says "1", /sys/block/sda/queue/discard_* all says "0". And, of course, I cannot run fstrim /, it says that operation not supported. Is there some trick to enable TRIM support in my guest system without reinstalling it?

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• Automation of software installation - should I ask for text or file?

  - by Denis

  I am preparing a software installation in Windows environment for my application. During installation it asks for Subscriber ID which should be entered into text field. I am wondering if it is a best solution for mass installations. I know that for mass installations IT teams use systems like Microsoft System Center which allow automate deployment. But I do not know much about capabilities of such systems. Can such system automate data entry into the text fields? Will it be better to change installation process and ask not a text but a file which contains Subscriber ID? By the way, I am looking for beta testers for my software. This software let user view Microsoft Project files without having Microsoft Project installed.

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• Can I use one virtualbox disk for multiple machines?

  - by mxp

  I'm not sure what search term to use and skimming through the VirtualBox manual didn't help me either, so I ask my two questions here... My setup is this: PC with dual boot into Windows 7 and a Debian operating system (both 64bit). I've created a virtual machine (Kubuntu, 64bit) under Windows and put it's VDI file on a SMB share of my NAS. Then I created a VM under linux using the same settings for memory etc and assigned the existing VDI file to it. My idea was that I could use that virtual machine from Windows and Linux as well. (1) Is this generally something that should work without problems? I noticed that snapshots get me into trouble because they appear to be not visible from the other operating system: The snapshots I took after installing the guest system are not visible under Linux. That's why I shut down the VM after usage and not save its state while it's running. My current problem is this: I have used the VM under Windows first, then under Linux. Now it will only start on Linux. When trying this on Windows the guest OS detects some kind of hard disk error and fails to boot because it cannot mount its drive. Obviously the virtual hard disk won't fail so it must have something to do with me using it under Linux. (2) How can I fix that? Update: It also looks like any changes I made in the VM under Linux have been reset by trying to boot it under Windows. Looks like it's back to the latest snapshot. I'm confused... Update The answer to my first question can be found below. In short: It works, as long as you don't use snapshots. The answer to my second question is this: Under Windows set the VM back to the latest snapshot and then discard the snapshot so it gets merged. There should be no snapshots left at the end. If you have multiple snapshots, discard the earliest ones first (Snapshot 1, then 2, 3, ...). I'm not sure what happens if you start at the end (.., 3, 2, 1). This of course leads to some data loss since you revert all changes since the last snapshot. But at least the VM is usable again.

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• Linux released memory

  - by user59088

  If My process allocates some big memory and then deallocates, would top or gnome-system-monitor show that my memory usage of that process decreased ? or kernel will still reserve that memory for that process ? What I see is I am deallocating memory. But I still see gnome-system-monitor displaying growing memory for my program. I don't find memory leak in my end. I want to know whether its not displaying released memory ? or there is really a memory leak at my end ?

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• Weird files in User folder

  - by Vervious

  In my user folder (C:/Users/myAccount/) theres a set of interesting hidden files that I've never seen before (right now it's a fresh install of Windows 7 Ultimate). These are: NTUSER.DAT, ntuser.dat.LOG1, ntuser.dat.LOG2, and NTUSER.DAT(whole chain of numbers and letters).TM.bif, NTUSER.DAT(whole chain of numbers and letters).TMContaineretcetc.regtrans-ms, and another similar one. When I try to delete them, it says the system is using them. I've never seen these files before. Are they ok to delete? Or should I leave them in my home folder? I always keep "Show hidden files" as well as "Show System files" checked, since I prefer being able to see all the files on my computer. If I shouldn't delete them, is there at least a way to tidy them up a bit? Thanks.

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• How did what appears to be a virus get on my computer? (explanation of situation enclosed)

  - by Massimo

  My system is Windows XP SP3, updated with the latest patches. The PC is connected to a Cisco 877 ADSL router, which does NAT from the internal network to its single static public IP address. There are no forwarded ports, and the router's management console can only be accessed from the inside. I was doing two things: working on a remote office machine via VPN and browsing some web pages on the Cisco web site. The remote network is absolutely safe (it's a lab network, four virtual servers, no publicly accessible services and no users at all; also, none of what I'm going to describe ever happened there). The Cisco web site... well, I suppose is quite safe, too. Suddenly, something happened. Strange popups appears anywhere; programs claiming they're "antimalware", "antispyware" et so on begins autoinstalling; fake Windows Update and Security Center icons pop up in the system tray. svchost.exe began crashing repeatedly. Then, finally, after some minutes of this... BSOD. And, upon rebooting, BSOD again. Even in safe mode. Ok, that was obviously some virus/trojan/whatever. I had to install a new copy of Windows on another partition to clean things up. I found strange executables, services and DLLs almost anywhere. Amongst the other things, user32.dll and ndis.sys had been replaced. A fake software called "Antimalware Doctor" had been installed. There were services with completely random names or even GUIDs (!), and also ones called "IpSect" and "Darkness". There were executable files without an .exe extension. There were even two boot-class drivers, which I'm quite sure are the ones that finally caused the system to crash. A true massacre. Ok, now the questions: What the hell was that?!? It was something more than a simple virus! How did it manage to attack my computer, as I am behind a firewall and was not doing anything even only potentially harmful on the web at the time?

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• routing weirdness - traceroute 'vanishes' en route

  - by The Journeyman geek

  I'm attempting to set up one of my boxes as a server (again), but i'm having some odd connection issues- the box itself connects fine to the internet, but trying to connect to my external ip address seems to result in the trace getting 'lost' partway. http://pastebin.com/HCQAGbvn - this is a traceroute from another system that's connected to another ISP - starhub is my own one, while i have another system that i have access to on singtel. I'm wondering if my ISP is messing around with routing, or is something very odd going on. As you note, the traceroute dosen't reach me, but if it helps, i use a dd-wrt router. edit: Facepalmishly, turning the firewall on my router on and off fixed it. I don't get why it dropped off at different ip addresses each time, or why the router set it self to block.. everything, or why it affected the ipv6 tunnel as well.

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• Installing additional printer drivers (x86) on Windows 7 (x64)

  - by ambrax

  I've successfully installed Windows 7 (x64) and drivers for my Canon MP510, and have no problem printing with this setup. There is another PC in the network running XP SP3, and I want to share the printer so that users of that PC can also print. On W7 I have the option of installing additional printer drivers for other system architectures (Itanium and x86). I've downloaded the most current 32-bit drivers for the printer, but every time I direct the install dialog to the folder containing the drivers, I get the following error message: Selected printer driver not found The specified location does not contain the driver Canon Inkjet MP510 Printer for the requested processor architecture. Retry Cancel I'm stumped. I'm absolutely certain that the specified location actually does contain the correct drivers; I've even installed them on the XP system. I've tried everything I can think of. What am I overlooking?

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• Recovering database files from a corrupted VHD

  - by Apocalypse9

  We have a SQL server hosted on a virtual machine. Our hosting company updated/restarted the server and for some reason the virtual machines became unbootable. We've spoken to Microsoft and used a few higher level tools to attempt to recover the virtual machines but were unsuccessful. In browsing the file system the database folder doesn't even appear. I'm wondering if there are any lower level tools that might be able to find and copy the database files. As far as I know the physical hard drive is ok, so I'm hoping there may be some way to recover the files themselves even if the rest of the virtual machine file-system is a loss. Obviously we're in a bit of a bind, and any help/ suggestions are very much appreciated.

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• Is paravirtualization evil?

  - by Daniel

  I have an VMWare ESX Server v3.5 with a few virtualized Debian Lenny VMs (kernel 2.6.22 with vmi) running Apache Tomcat 5.5. I enabled paravirtualization, and Disk IO increased from about 240MB/s to 380MB/s, making me a happy admin. The problem now is that my apache tomcat becomes deadlocked during startup, running with 200% CPU (I have 2 CPUS assigned to the VM), and don't know how to get both: A stable system and a fast system. I somewhere heared that paravirtualization is legacy anyway and won't be available on newer ESX servers. Is there a replacement for this seemingly performance-improving option, or is it discontinued becauses it is just unstable? What is the state of paravirtualization? Should I ignore it completely? Thanks for all answers in advance.

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• How do I install yum on Redhat Enterprise 4?

  - by Bob Cross

  For historical reasons, one of the machines that I manage has a Redhat Enterprise 4 boot disk (among others). Every now and then, we have to boot into RHEL4 to bring up some of the legacy software that we support and connect to. Since it's a fringe system, the Redhat support has long since lapsed and I can't convince myself that it would be worth paying just to get RPMs that I can go and get for myself. That said, the default RHEL tools are heavily biased against letting you do exactly that. I would like to install yum and use that as my package discovery and installation. So, is there an installation guide to integrating yum with an older RHEL 4 system?

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• When HDD wakes up?

  - by NumberFour

  Im looking for some small script or application which could log the time when a non-system disk wakes up. I cannot identify which application or script wakes up my non-system drive (which has to be asleep until I work with it). I have already set the noatime flag, tried to use powertop and iotop to determine which application could prevent it from going to sleep - but with no result. So my plan is to set this drive asleep (hdparm -Y) and see at what time it gets regularly woken up. Thanks for any advice.

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• Crossplatform "jail" for an application

  - by Alexander

  We currently have a variety of systems (Linux, Solarix, *BSD, HP-UX ...) on which we are not allowed to install anything into / (but I have root access. That's strange, I know). But we'd like to run Puppet on all of them. So, the obvious idea is to install Puppet with all prebuilt dependencies into some isolated tree, something like "jail", which will allow to use dependences from some prefix and to access the host system. The big advatanges would be uniform deployment and updates. One solution that came to my mind is to deploy Gentoo Prefix, and install Puppet there with package manager. However, this requires a lot of extra space and some manual patching for each system. Maybe there are some more elegant and simple solutions?

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• dvipng with Windows 7

  - by Phenom

  How do I install dvipng on a Windows 7 system?

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• Change default code page of Windows console to UTF-8

  - by Regent

  Currently I'm running Windows 7 x64 and usually I want all console tools to work with UTF-8 rather than with default code page 850. Running chcp 65001 in the command prompt prior to use of any tools helps but is there any way to set is as default code page? Update: Changing HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Nls\CodePage\OEMCP value to 65001 appear to make the system unable to boot in my case. Proposed change of HKEY_LOCAL_MACHINE\Software\Microsoft\Command Processor\Autorun to @chcp 65001>nul served just well for my purpose. (thanks to Ole_Brun)

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• How can I send raw postscript to a remote printer via CUPS?

  - by Ash

  I have an ancient fax device with a printer interface that only accepts postscript level 1 documents formatted in a specific way. I only have access to this printer over the lpd:// protocol. I have some old documents from our previous system that work fine on our Unix machines, but they are altered somehow by CUPS when I use lp on our Linux system. The PDF files that end up in the print queue are significantly modified versions of the original, and although they still render in ghostscript, they don't do anything on the printer. I'm wondering if there's a way to tell CUPS "don't process this, just send it to the printer without modification", or whether there's a lpd client or procedure I could try?

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• Sysprep.exe completely missing on both of my Windows 7 64bit machines. How should I find a workaround?

  - by Zoltán Tamási

  The sysprep.exe file is simply missing on my Windows 7 64bit machine. I tried to find it on another computer, but it wasn't found there either. I can't understand it, because on a lot of forums and even in the official articles there are a lot of references to this tool. I've checked system, system32, sysWOW64 folders, and even made a full search with Total Commander. I only found a sysprep folder in the system32 folder, but inside was only an en-US subfolder, which was empty. Then I thought I will give my Windows PE bootdisk a try, which I've created a while ago. No result, only the same empty en-US folder is present there as well. Please if anyone knows what's happening, point me to the right direction. I need to clone my system and I'm stuck right at the first step...

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• mysql 5.1 - innodb - query_cache_size - 9,418,108 queries have been removed from the query cache due to lack of memory

  - by Tom C

  Currently running on a 16GB system - Ubuntu 64 bit. INnodb Buffer Pool is set to 10GB. tuning-primer shows the following: QUERY CACHE Query cache is enabled Current query_cache_size = 512 M Current query_cache_used = 501 M Current query_cache_limit = 4 M Current Query cache Memory fill ratio = 97.87 % Current query_cache_min_res_unit = 4 K However, 9418108 queries have been removed from the query cache due to lack of memory Perhaps you should raise query_cache_size That is over 9million queries removed. System uptime is 8 days. Should I remove the Query Cache altogether? Our db is always under heavy I/O. tia

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• Window will read this particular DVD which it usually doesn't, if it spins for a longer time

  - by curious_kid

  I'm unable to figure out what's wrong with my system. My computer will read this particular DVD sometimes and mostly it won't. When trying to explore the DVD, I get error "Windows can't access this disc" ( note : It doesn't says that the "disc is empty", the normal error which I generally get when I try to read a scratched DVD ). Ok now the mysterious part, I have noticed that everytime DVD spins for a longer time ( like for 1 -2 minutes), window will read it without any problem. Extra information : The DVD I'm talking about doesn't have any scratches. I tried cleaning the DVD Drive with a lens cleaning CD. DVD was burned in multisessions. My system have window 8 installed. Question I wanted to ask : What makes DVD spins for a longer period of time sometimes ? If possible how can I make window spin the DVD for longer time ? Any solution to my problem ?

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• Wake-On-Lan - is it possible to access boot menu?

  - by truthseeker

  Now imagine this situation. I have a computer which has 2 operating systems installed - Windows XP and Windows 7. On booting menu is displayed where I can select which operating system I want to load. When I do nothing, Windows 7 loads (after some delay). This computer is connected to LAN and has Wake-On-Lan function enabled. Is it possible to remotely select which operating system I wish to load? Now it is Windows 7. But sometimes I wish it would be Windows XP.

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