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• Intermittent graphics issue

  - by Rob

  An older (~3 year old) PC I have passed on to my younger brother has a Sony 17" LCD monitor and uses on-board Intel GMA 3100 graphics (supports Aero under Windows 7 and no more is required). Recently he has complained to me twice that after booting up the screen looks all 'fuzzy'. Initially I thought maybe he messed up the ClearType settings by mistake, but resetting that did nothing. The only thing that finally worked was changing the resolution to something else temporarily, then setting it back to the original native (highest supported) resolution. The second time this happened the same 'fix' worked. This is happening only intermittently as of now and is not predictable/reproducible. I suspect either the monitor or on-board graphics is dying. How can I check and confirm which of the two it is (or maybe something else you guys can think of)? If it's the on-board graphics, would I be able to keep using the same motherboard with the addition of a cheap PCI-E graphics card?

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• How do I stop video tearing? (Nvidia prop driver, non-compositing window manager)

  - by Chan-Ho Suh

  I have that problem which seemingly afflicts many using the proprietary Nvidia driver: Video tearing: fine horizontal lines (usually near the top of my display) when there is a lot of panning or action in the video. (Note: switching back to the default nouveau driver is not an option, as its seemingly nonexistent power-management drains my battery several times faster) I've tried Totem, Parole, and VLC, and tearing occurs with all of them. The best result has been to use X11 output in VLC, but there is still tearing with relatively moderate action. Hardware: MacBook Air 3,2 -- which has an Nvidia GeForce 320M. There are two common fixes for tearing with Nvidia prop drivers: Turn off compositing, since Nvidia proprietary drivers don't usually play nice with compositing window managers on Linux (Compiz is an exception I'm aware of). But I use an extremely lightweight window manager (Awesome window manager) which is not even capable of compositing (or any cool effects). I also have this problem in Xfce, where I have compositing disabled. Enabling sync to VBlank. To enable this, I set the option in nvidia-settings and then autostart it as nvidia-settings -l with my other autostart programs. This seems to work, because when I run glxgears, I get: $ glxgears Running synchronized to the vertical refresh. The framerate should be approximately the same as the monitor refresh rate. 303 frames in 5.0 seconds = 60.500 FPS 300 frames in 5.0 seconds = 59.992 FPS And when I check the refresh rate using nvidia-settings: $ nvidia-settings -q RefreshRate Attribute 'RefreshRate' (wampum:0.0; display device: DFP-2): 60.00 Hz. All this suggests sync to VBlank is enabled. As I understand it, this is precisely designed to stop tearing, and a lot of people's problem is even getting something like glxgears to output the correct info. I don't understand why it's not working for me. xorg.conf: http://paste.ubuntu.com/992056/ Example of observed tearing::

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• A tip: Updating Data in SharePoint 2010 using REST API

  - by Sahil Malik

  SharePoint 2010 Training: more information Here is a little tip that will save you hours of head scratching. See there are two ways to update data in SharePoint using REST based API. A PUT request is used to update an entire entity. If no values are specified for fields in the entity, the fields will be set to default values. A MERGE request is used to update only those field values that have changed. Any fields that are not specified by the operation will remain set to their current value.   Now, sit back and think about it. You are going to update the entire entity! Hmm. Which means, you need to a) specify every column value, and b) ensure that the read only values match what was supplied to you. What a pain in the donkey! So 99/100 times, a PUT request will give you a HTTP 500 internal server error occurred, which is just so helpful. Read full article ....

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• Help Decide between C#/XNA client or Java

  - by Sparkky

  The game runs on a client/server architecture currently setup for TCP, and the client code was built in AS3 to be web based. What we're running into is 3 problems for the client. AS3 has no hardware acceleration so we are having some issues with slowdown when implementing some features TCP is really frustrating for a sidescroller when you're talking with a server. I'm having a heck of a time with the interpolation/extrapolation to make everyone else look smooth while minimizing lag. I would much rather be able to use UDP and throw in something similar to the age old Quake interpolation/extrapolation. No right click I work professionally with C#, and I did all my University (almost 2 years ago) with Java. Java really appeals to me because of the compatability while C# appeals to me because I've heard so much good about XNA and I love visual studio. For a Client/Server based MMOish sidescroller in your opinion should I stick with AS3 and the TCP protocol, or should I abandon some of my audience, ramp up the graphics and hit C#, or journey back to the land of Java. Thanks :D

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• xcopy files and directory

  - by user1044937

  I have a folder named "C:\Jobs\job#1" , "C:\Jobs\job#2" "C:\Jobs\job#3" etc and a lot of directories and sub-directories under it. I want to get the all the directories under Jobs and xcopy them to C:\backup. Then I want to xcopy all the files under each Job#1, 2 ,3 etc. to C:\backup\job#1\month\\*.* To make it clearer. Source dir = C:\Jobs\job#1\"myfiles&dir" Destination dir = C:\Backup\job#1\month\"myfiles&dir" then do the next folder Source dir = C:\Jobs\job#2\"myfiles&dir" Destination dir = C:\Backup\job#2\month\"myfiles&dir" ...until all folders are back-up. Since the job folder keep increasing, by doing it this way I don't have to add extra code on this script except modify the month. Thank you.

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• How Do Computers Work? [closed]

  - by Rob P.

  This is almost embarrassing ask...I have a degree in Computer Science (and a second one in progress). I've worked as a full-time .NET Developer for nearly five years. I generally seem competent at what I do. But I Don't Know How Computers Work! Please, bare with me for a second. A quick Google of 'How a Computer Works' will yield lots and lots of results, but I struggled to find one that really answered what I'm looking for. I realize this is a huge, huge question, so really, if you can just give me some keywords or some direction. I know there are components....the power supply, the motherboard, ram, CPU, etc...and I get the 'general idea' of what they do. But I really don't understand how you go from a line of code like Console.Readline() in .NET (or Java or C++) and have it actually do stuff. Sure, I'm vaguely aware of MSIL (in the case of .NET), and that some magic happens with the JIT compiler and it turns into native code (I think). I'm told Java is similar, and C++ cuts out the middle step. I've done some mainframe assembly, it was a few years back now. I remember there were some instructions and some CPU registers, and I wrote code....and then some magic happened....and my program would work (or crash). From what I understand, an 'Emulator' would simulate what happens when you call an instruction and it would update the CPU registers; but what makes those instructions work the way they do? Does this turn into an Electronics question and not a 'Computer' question? I'm guessing there isn't any practical reason for me to understand this, but I feel like I should be able to. (Yes, this is what happens when you spend a day with a small child. It takes them about 10 minutes and five iterations of asking 'Why?' for you to realize how much you don't know)

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• SharePoint 2007 Enabling Incoming Email Error

  - by Cherie Riesberg

  Symptom: When configuring incoming e-mail, the e-mails come through just fine if the server name is in the e-mail address: [email protected] but when you change it to a vanity name [email protected], the message is bounced back and you get this error: Delivery has failed to these recipients or distribution lists: [email protected] Your message wasn't delivered because of security policies. Microsoft Exchange will not try to redeliver this  message for you.    Please provide the following diagnostic text to your system administrator. The following organization rejected your message: servername01.fqdn.com.   Problem: The SharePoint server relay rejects the message because it doesn't recognize the name.  You have set it up in Exchange, but you need to set up an alias in the SMTP service on the SharePoint server;   Solution: Configure an Alias Domain An alias domain is an alias of the default domain. You can set up alias domains that use the same settings as the default domain. Messages that are received by the SMTP Service for an alias domain are placed in the Drop folder that is designated for the default domain. To configure an alias domain, follow these steps: Start IIS Manager or open the IIS snap-in. Expand Server_name, where Server_name is the name of the server, and then expand the SMTP virtual server that you want (for example, Default SMTP Virtual Server). Right-click Domains, point to New, and then click Domain. The New SMTP Domain Wizard starts. Click Alias, and then click Next. Type a name for the alias domain in the Name box, and then click Finish. Quit IIS Manager or close the IIS snap-in.

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• Is there a convenient method to pull files from a server in an SSH session?

  - by tel

  I often SSH into a cluster node for work and after processing want to pull several results back to my local machine for analysis. Typically, to do this I use a local shell to scp from the server, but this requires a lot of path manipulation. I'd prefer to use a syntax like interactive FTP and just 'pull' files from the server to my local pwd. Another possible solution might be to have some way to automatically set up my client computer as an ssh alias so that something like scp results home:~/results would work as expected. Is there any obscure SSH trick that'll do this for me? Working from grawity's answer, a complete solution in config files is something like local .ssh/config: Host ex HostName ssh.example.com RemoteForward 10101 localhost:22 ssh.example.com .ssh/config: Host home HostName localhost Port 10101 which lets me do commands exactly like scp results home: transferring the file results to my home machine.

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• 32 bit programs can't access Internet in Windows 7 64 bit

  - by korona

  I recently got a new ASUS laptop with Windows 7 Home Premium pre-installed. It worked OK for a while but a couple of days ago, suddenly I couldn't access the Internet any more. After narrowing down the problem, I've reached the conclusion that what's happened is that 32 bit programs are suddenly not able to use the Internet, but 64 bit applications work just fine. Examples of programs that DON'T work any more: Google chrome Firefox Internet Explorer 8 World of Warcraft Examples of programs that DO work: Internet Explorer 8 (64 bit) ping (command line) nslookup (command line) ftp (command line) I'm pretty sure that those command line apps are 64 bit native. A re-install of Windows using the recovery partition on the laptop did fix the problem temporarily, but now it's back again. And I seem to be stuck between a rock and a hard place getting someone to take the responsibility for this; the vendor says to talk to ASUS, ASUS says it's a software issue, and Microsoft doesn't give support on OEM licenses... Does anyone know how to solve this issue?

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• Cheap ways to do scaling ops in shader?

  - by Nick Wiggill

  I've got an extensive world terrain that uses vec3 for the vertex position attribute. That's good, because the terrain has endless gradations due to the use of floating point. But I'm thinking about how to reduce the amount of data uploaded to the GPU. For my terrain, which uses discrete / grid-based vertex positions in x and z, it's pretty clear that I can replace my vec3s (floats, really) with shorts, halving the per-vertex position attribute cost from 12 bytes each to 6 bytes. Considering I've got little enough other vertex data, and an enormous amount of terrain data to push into the world, it's a major gain. Currently in my code, one unit in GLSL shaders is equal to 1m in the world. I like that scale. If I move over to using shorts, though, I won't be able to use the same scale, as I would then have a very blocky world where every step in height is an entire metre. So I see these potential solutions to scale the positional data correctly once it arrives at the vertex shader stage: Use 10:1 scaling, i.e. 1 short unit = 1 decimetre in CPU-side code. Do a division by 10 in the vertex shader to scale incoming decimetre values back to metres. Arbirary (non-PoT) divisions tend to be slow, however. Use (some-power-of-two):1 scaling (eg. 8:1), which enables the use of a bitshift (eg. val >> 3) to do the division... not sure how performant this is in shaders, though. Not as intuitive to read values, but possibly quite a bit faster than div by a non-PoT value. Use a texture as lookup table. I've heard that this is really fast. Or whatever solutions others can offer to achieve the same results -- minimal vertex data with sensible scaling.

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• Having extreme issues getting Compiz working on Ubuntu 11.10 (32-bit)

  - by Josh Hornell

  I have been working very hard the past few days to try to get Compiz configured and working correctly but I have been running into a lot of issues. I first installed the CompizConfig Settings Manager and tried different features such as the desktop cube and couldn't get any of them to work. Then I read that I may not have the right graphics card drivers installed (Nvidia GT540m). So I went into the Additional Drivers tool and it shows that 'no proprietary drivers are in use on this system', which struck me as a bit odd as when I very first installed Ubuntu it showed that my Nvidia drivers were installed an active until I downloaded and installed the updates to Ubuntu and since then it's shown empty. I then tried to install my graphics card drivers manually via this article How do I install the latest Nvidia drivers via the Additional Drivers tool?. I rebooted and had no issue although I tried to go back into the CompizConfig Settings Manager and couldn't get anything to work as well as my Additional Drivers tool still showed no drivers installed. I feel like I've tried about everything I can think of and any help would be much appreciated!

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• How do networking ports work? Can I configure the ports that client and server use?

  - by joedotnot

  Let's say i have a "server" program listening on address 1.2.3.4:69 (i.e. remote port 69) When i connect from a "client" program to it, typically i would specify the IP address + port of the target or server system; But what port would the client be using ? And how does the server know which port to connect back to the client on? I understand this question is very general, but just wanting to get a general feel for how things work. Then extending this to a specific protocol, say FTP (typical port 21), can I change it such that the server uses port 69, but the client uses port 100? And similarly, for Remote Desktop in WinXP (typical port 3389), i know how to change the server port to be something other than 3389, but how does one change what port the client uses (if at all possible)?

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• Laptop crashes when connecting to external harddisk

  - by Gnot

  I recently had a problem with my laptop. when I booted up the machine, I would get a SMART failure error message and when I pressed F1 to continue, it would take a very long time to boot and it would come back to the same error message again. Thinking that my hard disk was dying, I bought a new hard disk and installed on my laptop and so now my laptop is alright. However I need to recover data from that old hard disk, so I bought an external hard disk case and placed the old hard disk onto the case and connected to my laptop with USB. The first few times when I connected, I could see the files from the old hard disk and managed to copy some files over although it took extremely long to transfer. But now whenever I connect to the old hard disk, after a few minutes, my laptop will crash and re-boot. Do you think my old hard disk is dead beyond repair? Or you can offer some help here? Any assistance would be appreciated!

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• How much ethical is to accept second offer while serving notice period for first company? [closed]

  - by iammilind

  I had got an offer from a company X 2 months back. Though the compensation was pretty good, I asked for more. They declined and I continued my search for the best. I was expecting good companies (Y, Z) will contact me, but that din't happen. Then 2 months later, now I re-approached company X again and they issued me the same offer. I accepted it, resigned from my current company and serving the notice period (2 months). Now the twist: I got calls from Y and Z (good companies). They definitely give better compensation. If they select me then my plan is to accept the better offer from Y/Z and inform the X immediately that I have got better opportunity, so I will not be able to join the company... Is this ethical ? [Edit Note: I have to just send an acceptance email (i.e. no contract signing) which doesn't legally bind me to join that company. So, legally I am not doing anything wrong. However, I am worried that if I am doing right/wrong ethically.]

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• Identifying a CAT6 cable in a bundle

  - by Jon Tackabury

  We had a contractor wire up our office with all the cables leading back to a central location. The only problem is that he didn't label anything, so we have no idea which cables go to which room. One end of the cable is terminated in a wall-jack (in the rooms), the other end is un-terminated and will be punched to a patch panel. Is there a way to identify the cables without having to terminate them? We'd like to group the cables on the patch panel by room, but I don't want to crimp/punch each cable twice. Thanks!

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• what to use instead of laptop-mode?

  - by playcat

  hello, i have ubuntu 10.10 64bit on hp 6735s (turion processor). it overheats, and i'm forced to use turion power control in order to keep core temperature to a reasonable level. one more measure that i use is putting my processors to conservative mode. that way, i'm perfectly happy with its performance, and heat is where it should be. however, after my latest upgrade, something happened - cores are back to ondemand by default, and i'm not sure if turionpowercontrol is working any more (ps axu | grep urion shows no process). in addition, i read somewhere that laptop-mode uses hdd spindown for preserving data/energy, and that hdds have only a limited amount of those spindowns, so laptop-mode usage can actually shorten the life of my hdd. i'm wondering if there is a good way to set my cores to automatically go to conservative mode? also, what's the good way to see what is the voltage my cores use? on windows i use cpuz tools. thx and sorry for the long explanation.

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• What could have caused a large traffic drop from Google in early May?

  - by Scott Schluer

  I have a website (www.equispot.com) that has been indexed for almost 2 years in Google. I managed to get myself on the first page (average position 6-8) on Google for my target keyword of "horses for sale" and held there pretty solidly for months. Suddenly, with no changes to the site, traffic from Google dropped like a rock in early May. I slowly fell in position until now I'm sitting at the bottom of page 4. I have never hired an SEO firm, have not used any "black hat" techniques that Google would have penalized me for in their May update, etc. I'm not familiar enough with SEO to know how to look at link profiles, etc. to tell if there's something wrong. I've run my site through a DNS checker and it came back with no errors. Google Webmaster Tools shows no messages or notices of any kind, just a drop in traffic. GWT also shows only 2 server errors and 1 404. Is there anyone who can tell me by quickly checking my domain if there's an obvious reason that my traffic would have fallen so far, something that I can fix?

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• Accessing a storage-side snapshot of a cluster-shared volume

  - by syneticon-dj

  From time to time I am in the situation where I need to get data back from storage-side snapshots of cluster shared volumes. I suppose I just never figured out a way to do it right, so I always needed to: expose the shadow copy as a separate LUN offline the original CSV in the cluster un-expose the LUN carrying the original CSV make sure my cluster nodes have detected the new LUN and no longer list the original one add the volume to the list of cluster volumes, promote it to be a CSV copy off the data I need undo steps 5. - 1. to revert to the original configuration This is quite tedious and requires downtime for the original volume. Is there a better way to do this without involving a separate host outside of the cluster?

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• Partition falsly recognized as RAW

  - by Paul Hiemstra

  On my 2 TB data disk I have two primary partitions, one of 1.6 TB for data storage in Linux (ext3) and one of 300 GB for some additional data storage for Windows. I run a dual-boot Windows 7/Ubuntu 12.04 install. The issue I have that if I start my computer into Windows 7, bot the partitions on my 2TB data drive are not recognized. In stead, Windows 7 sees one 1TB partition with type RAW. However, if I reboot to Linux, and then back to Windows 7, the partitions are correctly recognized. The following two screenshots illustrate my situation. Before I reboot to linux: and after the reboot: I have two questions: What could cause this behavior? How can I solve this issue.

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• Managing MS Exchange server-side email rules on Mac OS X?

  - by Doug Harris

  Has anybody found an easy way to manage server-side rules from Mac OS X? Here's a brief list of what I know doesn't work: Entourage 2008 - it supports client rules, but not server rules. No good, there are certain actions that should happen before I open my laptop or check my email on my iPhone. Apple Mail - same as Entourage, but at least I don't get as frustrated since, unlike Entourage, this isn't a Microsoft product. Web mail (aka Outlook Web Access) - perhaps you can manage rule in the fancy version which Exchange serves to IE, but not with the browsers available on a Mac. I manage this now by launching a VMWare virtual machine running Windows XP and Outlook. I don't count that as an easy way. Update, post release of Office 2011 Does MS Outlook 2011 have the ability to manage server-side rules? Update, post installation of Office 2011 No. Outlook 2011 doesn't have this ability. I've already removed my account from Outlook and switched back to Apple Mail and iCal

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• Excel chart: How to reverse the X axis of time series data

  - by JohnnyLambada

  In Excel 2003, I have a time series from a financial report that goes something like this: 2007 2006 2005 Amount 300 200 100 I want to create a graph of the time series that looks something like this (please excuse the ugly ascii graph): 300| .x | ... 200| .x.. | ... 100| x |____________________ 0 2005 2006 2007 But intead of getting an upward sloping graph, excel wants to put my time series in reverse (the way it actually appears in the spreadsheet). Is there any way to make excel display the x axis in reverse of the way it normally does? I've tried manually reversing the range in the chart dialog (changing a range of B1:D3 to D3:B1), but excel just puts it back.

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• Adding Exchange Multi Tenant to an existing Exchange Network

  - by TiernanO

  I currently have an Exchange 2010 SP1 server in house, and due to some changes, it looks like i will need Multi Tenant support for a few extra domain names. Looking at the documentation i have found so far, it only mentions multi tenant support when upgrading from 2010 RTM - SP1, and not what you do if you have already got 2010 SP1 installed. So, from what i can gather, i have a few options: Install a new Exchange server with Multi Tenant support and migrate DBs over Back everything up and start again Something else... Any suggestions would be greatly appreciated... Thanks.

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• How to verify the code that could take a substantial time to compile? [on hold]

  - by user18404

  As a follow up to my prev question: What is the best aproach for coding in a slow compilation environment To recap: I am stuck with a large software system with which a TDD ideology of "test often" does not work. And to make it even worse the features like pre-compiled headers/multi-threaded compilation/incremental linking, etc is not available to me - hence I think that the best way out would be to add the extensive logging into the system and to start "coding in large chunks", which I understand as code for a two-three hours first (as opposed to 15-20 mins in TDD) - thoroughly eyeball the code for a 15 minutes and only after all that do the compilation and run the tests. As I have been doing TDD for a quite a while, my code eyeballing / code verification skills got rusty (you don't really need this that much if you can quickly verify what you've done in 5 seconds by running a test or two) - so I am after a recommendations on how to learn these source code verification/error spotting skills again. I know I was able to do that easily some 5-10 years ago when I din't have much support from the compiler/unit testing tools I had until recently, thus there should be a way to get back to the basics.

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• Is there any way to facilitate switching windows in Ubuntu?

  - by Ivan

  I'm just a student who received my laptop from my uncle, who's a coder, so I'm still getting used to working with ubuntu. I recently upgraded ubuntu from an earlier version, and everything seems to be pretty great. The only thing is that when I open a program, or file, or whatever, it takes up the whole screen. I can only close it by going to the far top left of my screen, or by ctrl+W. Anyways, I find it really hard to switch between programs. For example I really like to have my windows that are open to be accessible by clicking on their icon at the bottom of the screen... Great when writing or researching. Anyways, I really just want to find an easier way to switch windows. Also, I used to love the way I could cube-rotate my screen, and just drag files from one desktop to another, with compiz. Now, its sort of like flipping a coin when I switch windows, is there any way to get my desktop cube back? And yes, I have enabled all the old settings I used to use with compiz. Sorry if what I'm asking is very basic, I know how to use a computer, I'm just not really familiar with the interface! Any help is greatly appreciated.

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• Bad Performance With Games Under Wine in Ubuntu 12.04

  - by Pandem

  I'm somewhat new to Linux. I've dabbled with it before but never more than just experimentation in a VM or dual boot where I almost always reverted back to Windows soon after (more due to a lack of commitment than a dislike for the OS). Anyway my problem is that in the two games (Guild Wars and Team Fortress 2) I've tried so far I get fairly bad performance. Despite both games having a "Platinum" rating I've still been forced to run both in DirectX 8, otherwise they either crash, have texture defects or the UI is missing. By "bad performance" I mean sub-30 FPS where there are some players and regular large framerate drops with video settings on low. Currently in my mind I believe the performance issues are just a problem with the drivers because my graphics card is a AMD 7850 which is virtually brand new and probably not properly supported yet but I'm unsure and would appreciate advice or tips to improve things. I have Ubuntu 12.04 installed and I am usually logged in a Gnome Classic session. I have installed AMD's proprietary drivers (Catalyst version 12.4) and have Wine 1.4 installed. I have used Winetricks to install DX9/DX10 dlls and other things.

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