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• Any way to disable specific CPU idle (Cx) states?

  - by Philippe

  I just got a new Toshiba Tecra S11 notebook, which has a Core i5 520M CPU, and it appears to suffer from a well-known problem: a high pitched noise when the CPU is idle. Googling around revealed that this is caused by a specific power-saving mode in the CPU. In most cases, C4 mode is blamed for the noise. So my question is: is it possible to disable C4 mode (or any other "sleep" mode) using some utility or BIOS setting? I don't mind if it hurts battery life. I'd appreciate any advice on this matter. It's driving me crazy. FYI: I'm running Windows 7 64-bit

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• Can I use Cygwin as a replacement for Ubuntu, for bash script testing?

  - by Jeroen De Meerleer

  Next wednesday i'm having an exam on Operating Systems. In this exam there will also be a part bash-scripting. The teacher itself will test the scripts in a Virtual Machine running Ubuntu. Myself, however, I'm having serious troubles with running the latest Ubuntu (14.04 LTS) on a Virtual Machine (there are troubles with gnome running very slow). So I'm thinking about using Cygwin, which is doing the job great for another course. The teacher already confirmed I can use that, but I'm thinking he doesn't know it at all. I've already tested the scripts we made in class and they're all running without errors. But I'm quite sure there are some things I have to mind on. My question: would you use Cygwin as a replacement for the Ubuntu VM? Or should I stick it with the VM (maybe by using a different config/platform).

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• I want to "image" 40+ laptops quickly...i welcome suggestions on reliable software

  - by Joldfield101

  I often have batches of laptops/PC's to re-image and have tried various methods, but each of them has been problematic and often take more time to troubleshoot than it would have been to image them individually! For example, i have tried to use ghost - i installed ghostcast server on my laptop but the clients never seem to boot to LAN successfully, or it takes an hour to get everything sorted (drivers, LAN, DHCP etc etc). I want a reliable tool that makes imaging quick and easy - and i don't mind paying for it if it's going to work (but obviously free = always good!)

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• What sysadmin must do to run OS with damaged /lib/libc.so file ? / rsyslogd daemon logrotation / deny checking list of running processes

  - by Virtual_Lotos

  What sysadmin must do to run OS with damaged /lib/libc.so file ? In other words, how command interpreter should be configured to be able to run system with corrupted /lib/libc.so file ? Do I have to move it to /var catalog ? Does the command interpreter must be statically compiled or have setuid attribute or perhaps must be a symbolic link to /bin/sh or must be no larger than 2MB ? How to prevent a user from checking list of processes started by another user ? How do I forbid a user to see which processes are running by another user ? What do I have to keep in mind when I want to make rsyslogd daemon logrotation ?

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• Why does my computer erratically scroll up and down?

  - by Jerry

  I am running Windows XP with SP3 on a 2002 Gateway machine. For the last few days I have experienced the problem of erratic scrolling that seems to have a mind of its own. If I am on a window with a scroll bar, the window scrolls up and down the page erratically, often when I have not initiated it. I am not sure but think this started following a routine Windows Update. It is doing it now as I type this. It is totally distracting to being able to do anything while it is occurring. It does it a while then there are occasional pauses in the scrolling then it starts up again. Any suggestions on fixing this?

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• Application got shut down in WinXP if I close the 2nd window of that application. [closed]

  - by kinopyo

  I'm using WinXP and here is my question: I run an application, such as Chrome, there would be one app in the task bar, and it's fine. Suppose a new window of Chrome opened(so there would be 2 window and 2 in the task bar), and when I close that,the 2nd one, the whole application just shutdown. And so does chrome, firefox, evernote, Becky!(the email client), even TortoiseSVN. So I think there should be a generic problem cause these applications shutdown, such as the platform - WinXP. Please give me some advice or hint, anything comes to your mind would be helpful!

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• Best virtualization solution for running Linux under Mac OS X?

  - by grumbles

  I'd like to run a virtualized Ubuntu instance under Mac OS X (10.6). I've used VirtualBox in the past, but am looking for something that will be faster, and don't mind paying for either Parallels Desktop or VMWare Fusion. Does anyone have experience running Linux guests under either or both programs? I'm primarily interested in doing software development on the Linux guest installation, but I'm also very concerned with the performance and responsiveness the guest OS. I have a mid-2010 15" MacBook Pro (2.66 GHz i5, 8 GB of RAM, NVIDIDA GeForce GT 330M). Thanks!

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• psql editor setting on Ubuntu

  - by dezso

  The situation is the following. This is an Ubuntu box: Linux ns3mx3 2.6.32-41-server #89-Ubuntu SMP Fri Apr 27 22:33:31 UTC 2012 x86_64 GNU/Linux Which means that when I first issue \e in psql, I'm asked to choose an editor. Then there is the .selected_editor file, which contains # Generated by /usr/bin/select-editor SELECTED_EDITOR="/usr/bin/mcedit-debian" So far this is OK (it's my problem that I consider this completely useless, but never mind). Then I set up a .psqlrc file: \set PSQL_EDITOR /usr/bin/vim \set EDITOR /usr/bin/vim \set VISUAL /usr/bin/vim As you can see, I wanted to be sure not to miss a candidate variable for editor setting. The file is used as expected: test=# \echo :EDITOR /usr/bin/vim But when I issue the \e command, none of these is used - I fall back to SELECTED_EDITOR. The situation remains just the same if I append an \unset SELECTED_EDITOR to the .psqlrc file. Now how can I make .psqlrc setting win over the default editor? (PostgreSQL version id 9.1.4)

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• How to recover logical volume deleted with lvremove

  - by John P

  I am on CentOS 5.5 and am running Xen. I have a large volume group that I create logical volumes on using lvcreate. Today I had a customer cancel her account, then change her mind about an hour later. Unfortunately I had already removed the LVM her Xen image resided on. (just using a standard lvremove ). There has been no other LVM activity on this disk since then (nothing else added or deleted). Is it possible to "undo" a lvremove, or recover logical volume? If so, how would I go about it?

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• How do communcations through ports works

  - by user71866

  I was studying socket programming and certain questions came to my mind. These are some beginner level doubts Is it mandatory to to use well known port for a particular application. For example if i am using ssl, can i design a server to listen on 1000 rather than 443. For http we are connecting to port 80 from some other arbitrary port. Whys no port 80 to port 80 communcation. how a server responds to connections coming to it from different ports to its port 80. how many connections are possible to a particul

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• What components should I upgrade to squeeze more life of my pc? [on hold]

  - by Jared

  Hi my current specs are CPU: Intel Core i5 750 2.66 GHz, Socket 1156 Motherboard: Asus P7P55 LX Motherboard, Socket 1156, 4xDIMM DDR3, 2xPCIe-16, 3xPCI, 2xPCIe-1, 14xUSB2, Audio, 1xATA, 6xSATA, RAID, ATX HDD: Seagate Barracuda 7200.11 ST31500341AS Hard Disk Drive, 1500GB, 7200rpm, 32MB Cache, SATA-2 RAM: G.Skill Ripjaw F3-12800CL8D-4GBRM, 2x2GB, DDR3-1600, PC3-12800, CL8, DIMM Video: MSI Radeon 5850 R5850-PM2D1G Video Card, 1024MB, DDR5, PCIe-16, DVI, CrossFire, HDMI PSU: Vantec ION2, 620W ATX PSU, SLI Ready, Black Firstly I know it badly needs an SSD, for which I'm thinking of the Samsung 250gb 840 EVO series. The ram could do with another 4GB, for which I am thinking of replacing the 2x2GB for 2x4GB of the same type. My video card is struggling with the latest releases, so vitally should I ditch the video card and go for something newer (ATI 7850, GTX 660?) or try and get another 5850 for crossfire support? Bearing in mind 5850's are sort of hard to come buy now as they are not stocked in shops usually, which means they have to be bought second hand.

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• cygwin ssh shortcut on windows desktop

  - by Alex Berkoff

  I have multiple servers that I need to remote into. I prefer Cygwin over Putty to do so. Anyhows - the process of opening my cool Mintty window and then typing the following commands takes too long. PS - I am using a "key" authentication to these servers. First, I double Click Cygwin Terminal shortcut from my windows desktop. Then once the terminal session has booted up, from the command prompt I type the following - $ eval `ssh-agent` $ ssh-add $ ssh <username>@<servername> Please keep in mind that my 'servername' is variable. In fact I have about 10 different server names that could potentially be inserted there - Hence my need for 10 different shortcuts. I would prefer to double click on something from my desktop that will fire up my Mintty and automatically execute the above bash shell commands. Does anyone have or can recommend a nice/elegant solution to do this?

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• Problem creating sitecollection when database attached has been deleted

  - by pkspt

  Hi, I created one new sitecollection in new contentdatabase but later i changed my mind and decided to create it in the same database as of the webapplication. I deleted the sitecollection I created through newdatabase and bt now when I am creating that site again its getting attached to the new database which got created above not the same one? Any solution for that I tried deleting database which got created after deleting site collection. Now, when I when I am trying to create a site its looking for old database and giving me error as its not able to open it. Any suggestions on this one..?

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• How can I keep the Windows 8 virtual keyboard from popping up?

  - by orbfish

  I am the unwilling recipient of Windows 8. Lenovo couldn't fix the new Windows 7 Ultrabook I bought, so they sent me a Yoga laptop, with touch-screen and Windows 8. Once I bought a start menu replacement, I don't mind Windows 8 too much - it's ugly, but most things work as well as Windows 7. But the thing that drives me crazy, endlessly, is the virtual keyboard popping up when I'm trying to do something else (well, just about anytime, since I almost never use it to type). It's like a giant Clippy that covers half the screen. I haven't figured out what causes it to pop up. It seems pretty random, and sometimes it goes away before I can even reach for the escape key. Sometimes it comes up when I'm typing, sometimes when my hands are nowhere near the keyboard. Sometimes several times a minute, sometimes not for hours. Any suggestions?

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• Why my backup to USB Drive is too slow?

  - by Jonas

  I have tried several backup solutions for my data and none of them was good enough. I basically want to make a copy of my files to an attached USB Drive from time to time. I don't mind starting my backups manually, since the USB Drive is not always connected. My problem is that my data contains a lot of files (a huge amount), so backing up takes forever (more than 20 hours). Using "rsync" an other similar solutions is not working because the I/O needed to check the file for changes takes longer than the time to actually copy it. Any suggestions?

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• Setting up a reverse proxy [on hold]

  - by mrwooster

  I am looking for the best solution for setting up a very low maintenance reverse proxy for a production website (example.com). The setup is as follows: A blog with will be hosted on heroku, and will reside at example.com/blog A static info page which will be hosted on S3 and will reside at example.com/signup A dynamic content management system, provided and hosted by an external vendor which will respond to requests for any other pages. The two solutions which come to mind are: Use HAProxy Ask the external vendor to reverse proxy requests for /blog and /signup The obvious solution would be to use HAProxy, but, if at all possible, I would like to avoid having to setup and maintain another server (especially such a critical one). I came across a company called Snapt which offers hosted HAProxy solutions, but its more geared towards load-balancing than reverse proxying. Option 2 is a possibility, but gives us very little control over changes and configuration. I see a lot of sites hosting blogs on /blog so this must be fairly common practice, am I missing an obvious solution?

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• windows 7 Home Premium (64 bit) won't boot up, I've tried system repair startup

  - by KamilB

  I've been trying to get my computer to boot up in the last 2 hours. I've tried using the system repair at start up, but all that does is it sends me to a screen with the stock Windows background that is enlarged with a cursor on the screen. It's not frozen and I can move the cursor around, but there is nothing to click on. I've tried to get into Task Manager and such, but the shortcut doesn't work. I have no back ups of the OS as it came pre-installed on the computer. Is there anyway for me to get my computer to work (I don't mind starting fresh)? I do have access to another computer but it's my brothers and it has Windows XP (I'd like to keep my Windows 7).

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• Setting up IIS 7.5 for AD Client Certificates for iOS devices

  - by vonsch

  I am working on getting an iPad to auth to an IIS7.5 website using a local certificate mapped to a user in AD. I am not, in any sense of the word, an IIS admin. I essentially need to setup a proof of concept. I believe that this may work, but I just have no idea how to do it. What I have so far is an iPad with a user certificate installed. I have this user certificate added the correlating user account in AD. What I would like is a basic text webpage to load showing the user that it is authenticating. I would like this page to not be viewable unless it is client certificate authenticated. I don't mind doing the legwork, but I really don't know where to begin on the IIS side. Can anyone point me in the right direction?

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• RAID 10 over RAID 5 when using SSDs

  - by root

  I am considering implementing an iSCSI shared storage array using SATA SSDs instead of the 15k RPM SAS drives we normally purchase. We normally use RAID 10 because of spindle contention with the random IO produced by virtualized workloads. I was wondering if we could switch to RAID 5 or RAID 6 to have more usuable space now that spindle contention is less of an issue. A question in my mind is how much overhead there is from the controller calculating parity. I am aware that this configuration will not allow TRIM to function. Our current workloads are running on a Dell H800 with a 24 bay external enclosure.

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• Hosting ESXI (free edition) [closed]

  - by Peter Adss

  We currently have one physical server running the free version of VMWare ESXi that virtualizes a Win SBS 2003 server and a Citrix server. We need to collocate the server and are investigating our options. Are there places that will host our virtual servers and save us the expense of shipping the physical server out for collocation. In my mind we'd copy the Vms to disk and ship them out. Does the fact that we're using the free version of ESXi create a barrier to this idea? Thanks for the help, I realize this is a stupid question.

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• how can i edit my admission form which i filled wrong . their is no other form is avilable now ...what i do ??? [closed]

  - by user60065

  Hi, I am a 2nd year student in graduation. Recently I filled an admission form for final year admission but it came back to me after 2 days because I had entered wrong information. I want to edit the wrong information and I have scanned the form. I am looking for a good online site where I can upload the scanned document and convert same into an editable format. I don’t mind paying. If any can point to a good site will be great & thanks in advance

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• Automatically kill processes that over time uses 95%+ of resources? Ubuntu

  - by data_jepp

  I don't know about you're computer but when mine is working properly no process is sucking 95%+ over time. I would like to have some failsafe that kills any processes behaving like that. This comes to mind because when I woke up this morning my laptop had been crunching all night long on a stray chromium child process. This can probably be done as a cron job, but before I make it a full time job creating something like this I'd thought I should check here. :) I hate reinventing the wheel.

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• ODBC in SSIS 2012

  - by jamiet

  In August 2011 the SQL Server client team published a blog post entitled Microsoft is Aligning with ODBC for Native Relational Data Access in which they basically said "OLE DB is the past, ODBC is the future. Deal with it.". From that blog post:We encourage you to adopt ODBC in the development of your new and future versions of your application. You don’t need to change your existing applications using OLE DB, as they will continue to be supported on Denali throughout its lifecycle. While this gives you a large window of opportunity for changing your applications before the deprecation goes into effect, you may want to consider migrating those applications to ODBC as a part of your future roadmap.I recently undertook a project using SSIS2012 and heeded that advice by opting to use ODBC Connection Managers rather than OLE DB Connection Managers. Unfortunately my finding was that the ODBC Connection Manager is not yet ready for primetime use in SSIS 2012. The main issue I found was that you can't populate an Object variable with a recordset when using an Execute SQL Task connecting to an ODBC data source; any attempt to do so will result in an error:"Disconnected recordsets are not available from ODBC connections." I have filed a bug on Connect at ODBC Connection Manager does not have same funcitonality as OLE DB. For this reason I strongly recommend that you don't make the move to ODBC Connection Managers in SSIS just yet - best to wait for the next version of SSIS before doing that.I found another couple of issues with the ODBC Connection Manager that are worth keeping in mind:It doesn't recognise System Data Source Names (DSNs), only User DSNs (bug filed at ODBC System DSNs are not available in the ODBC Connection Manager)  UPDATE: According to a comment on that Connect item this may only be a problem on 64bit.In the OLE DB Connection Manager parameter ordinals are 0-based, in the ODBC Connection Manager they are 1-based (oh I just can't wait for the upgrade mess that ensues from this one!!!)You have been warned!@jamiet

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• Unable to update the EntitySet because it has a DefiningQuery and no &lt;UpdateFunction&gt; element

  - by Harish Ranganathan

  When working with ADO.NET Entity Data Model, its often common that we generate entity schema for more than a single table from our Database.  With Entity Model generation automated with Visual Studio support, it becomes even tempting to create and work entity models to achieve an object mapping relationship. One of the errors that you might hit while trying to update an entity set either programmatically using context.SaveChanges or while using the automatic insert/update code generated by GridView etc., is “Unable to update the EntitySet <EntityName> because it has a DefiningQuery and no <UpdateFunction> element exists in the <ModificationFunctionMapping> element to support the current operation” While the description is pretty lengthy, the immediate thing that would come to our mind is to open our the entity model generated code and see if you can update it accordingly. However, the first thing to check if that, if the Entity Set is generated from a table, whether the Table defines a primary key.  Most of the times, we create tables with primary keys.  But some reference tables and tables which don’t have a primary key cannot be updated using the context of Entity and hence it would throw this error.  Unless it is a View, in which case, the default model is read-only, most of the times the above error occurs since there is no primary key defined in the table. There are other reasons why this error could popup which I am not going into for the sake of simplicity of the post.  If you find something new, please feel free to share it in comments. Hope this helps. Cheers !!!

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• Social Shopping

  - by David Dorf

  I've written about various breeds of social shopping in the past, so I decided to give some thought into a categorization with examples. Below I've listed the different types of social shopping I've observed and some companies that support them. Comments and Ratings -- Commenting on products has been around almost as long as e-commerce. Two popular players in this space are BazaarVoice and PowerReviews. Most shoppers prefer relying on peer reviews rather than retailer descriptions, so the influence over sales is very strong. f-commerce -- A new term that was sure to rear its ugly head when retailers started allowing shopping on Facebook, And its all Elastic Path and Alvenda's fault! Co-shopping -- Retailers like Wet Seal are enabling multiple people to shop together online. This is particularly applicable to fashion, where the real-time exchange of opinions is important. I actually tried this with a co-worker and its pretty cool. Bragging -- Blippy is Twitter for shoppers, allowing purchases to be "tweeted" so you can keep up with your friends. I get alerted when friends download music or apps from iTunes because chances are I'll be interested as well. This covert influence is one-up'ed by Snatter, a service that gives people discounts for tweeting or posting promotions from retailers. This is the petri dish of viral marketing. Advice -- Combine the bragging of Blippy and the opinions from BazaarVoice and you'd get ShopSocially, a social network dedicated to spreading product knowledge amongst informed shoppers. I'm sure if I gave it more thought, a few more types would come to mind, but I've got to get back to work. Now is not the time to be blogging at Oracle!

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