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• Laptops trying to connect via wireless? Only able to connect only via wired connection

  - by Chris J. Lee

  It seems that all the wireless laptops in the office have disconnected and are unable to reconnect to the wifi after a terrible storm caused some power interruptions. Troubleshooting actions Verify wireless broadcasting is up With each laptop i ended up flushing their dns cache on Win 7 (ipconfig /flush ) Performed an ipconfig /all to see what the new ip is Made sure password was correct Reset the router (multiple times) restarted each laptop. Tried connecting wirelessly Am i missing some small detail ? Network information The router is a linksys/cisco WRVS4400N router. Supports a lot of fancy features i don't know how to use. We have 3 static ip's the conference room computer, the wireless printer, my computer Mostly windows machines, we have 3 mac users

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• ATI Radeon HD 5970 Display numbering issues

  - by Arindam Sen

  I have 2 computers on which i have ATI Radeon HD 5970 graphics card installed. There is 1 VGA out and 1 DVI out in it. When I connect my VGA out to a monitor on my 1st computer, it shows it as display 1 and when I connect my DVI out to a monitor it show it as display 2 (I am using extended display). When I do the same thing on my 2nd computer it shows just the opposite. The VGA out shows as display 2 and the DVI out shows as display 1. Is it a problem with the drivers or the hardware? (because the graphics card on both is exactly the same)

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• Google I/O 2010 - Architecting for performance with GWT

  Google I/O 2010 - Architecting for performance with GWT Google I/O 2010 - Architecting for performance with GWT GWT 201 Joel Webber, Adam Schuck Modern web applications are quickly evolving to an architecture that has to account for the performance characteristics of the client, the server, and the global network connecting them. Should you render HTML on the server or build DOM structures with JS in the browser, or both? This session discusses this, as well as several other key architectural considerations to keep in mind when building your Next Big Thing. For all I/O 2010 sessions, please go to code.google.com From: GoogleDevelopers Views: 9 1 ratings Time: 01:01:09 More in Science & Technology

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• Caching strategies - LRU, MRU, Clock-Pro

  - by golgofa

  I am going to write a bachelor's science work on caching strategies and really, can't find any links to specifications or full descriptions of some of them. Only something like summaries from wikipedia. Please, help with some links on LRU, MRU caching and new-one - Clock Pro. Thanks a lot. All links are very useful for me. The purpose of work - is to compare different cache strategies to get more effiency. It based on WebApplication with ejb 2.0, so algorithm's will be implemented there, espesially in ejbLoad() and ejbFindByPrimarKey(). Also, one of aspects of this application - it will use not common scheme of tables in database - it based on metamodel. So, if you had any experience on this topic, i would be grateful to take some of your knowledge)

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• SSL Certificate for local web server

  - by Firefly

  Is it at all possible to create a self-signed certificate for use on multiple machines on a local network which would stop the browser complaining it is not a trusted site? We have a product which is basically a computer running lighttpd to serve a web interface for configuring the computer (sort of how a router has a web interface). There can also be many of these machines running on the same network with dynamic IP's. What I basically want to do is enable SSL for extra security but I don't want people who are on the local network to be given a browser warning about the certificate not being trusted. Is this at all possible?

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• I can't delete a file - even when using unlocker

  - by chipperyman573

  So I have a 64 bit windows 7 ultimate computer. On my desktop, I have a .iso file that should NOT be used by anything. However, when I use lockhunter (unlocker doesn't work for me), it says it can't unlock or delete it. When I check what it's being used by, it says by the system. Here's a picture when I click delete: Here's a picture of when I click unlock it: When I click Other Close locking process: I've had this file on my computer for a LONG time now and haven't been able to delete it. I've also tried eraser erase on startup, but that doesn't work, either. How can I remove this file?

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• screen does not wake up after suspend/ brightness will not adjust

  - by Nathan

  My computer is one of these: http://www.newegg.com/Product/Product.aspx?Item=N82E16834230467 Asus Zenbook UX32A-DB51 Just bought it yesterday. Set to "suspend" when I close the lid, but when I open it up again I just get a black screen. Pressing the power button doesn't work, not does clicking the mouse or any key combination. The same is true if I leave the computer until it suspends. Black screen, no response, have to reboot. I also can't seem to adjust the brightness. I put "brightness up" and "brightness down" function keys in, and when I push them it shows the brightness level as going up and down on the meter, but the screen does not actually become more or less bright. I am totally new to all of this. Please tell me what additional information you need to help me and where I can find it. Thanks! Edit: Tried the following: sudo gedit /etc/default/grub Change the line GRUB_CMDLINE_LINUX="" into GRUB_CMDLINE_LINUX="acpi_osi=Linux" sudo update-grub Restart your linux And "acpi_backlight=vendor" both to no avail.

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• Radiation from a UPS

  - by Erel Segal

  In our office, there are frequent eletric shortages that harm my desktop computer, so I wanted to install a UPS. However, my office-mates pointed me to papers talking about hazardous radiation from the UPS. The UPS manufacturers themselves recommend to put the UPS several meters away from humans, which is not possible because our office is small (the power is about 0.5 meters from us). As an alternative to UPS, my office-mates recommended that I switch to a laptop, which has a battery so it's immune to shortages. I have several questions: Is it true that the radiation from a laptop battery is lower than the radiation from a UPS? They do just the same thing - supply power using a battery! If the answer to 1 is yes - is there an alternative way to attach a battery, similar to a laptop battery, to a desktop computer? If the answer to 1 is no - how can I prove this to my office-mates, so that they let me use UPS?

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• Windows 7 wifi reports "no network access" and "no internet access" but connects in fedora

  - by rick2047

  I am running windows 7 home basic (64bit) on a Acer 5742G laptop with Atheos wifi adapter in it. Yesterday, I hiberneted my computer as I always do and up untill then the wifi was working fine. When I booted my computer up again today I started having a strange problem: It detects my wifi but after connecting to it, it keeps on oscillating between states of no network access and no internet access. I can't connect to anything (the internet or my router). I tried to reset my internet protocol stack using this fixit file. I also tried to uninstall and reinstall my network driver. Neither helped. I am using the same laptop's fedora installation right now and the wifi is working perfectly fine. Please help. Edit To add additional details, I have Microsoft Security essentials as my antivirus software and I haven't messed with the firewall or the router configurations.

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• How seriously would an employer take a job application from an applicant studying at the Open University [closed]

  - by user866190

  I ask the question because I am considering applying to a traditional bricks and mortar university to do mathematics, computer science or software engineering. However I am in my late twenties and have a young family so I am seriously considering going down the Open University route and working in the software development industry at the same time. If I do attend Open University, I will definitely study Mathematics. I fell in love with PHP and the common web technologies a few years back and it has slowly progressed into learning C++, Java and also Python. If I spent the next year increasing my knowledge of those languages whilst studying at the Open University, would an employee consider a self taught programmer who is 20% of the way through a Bsc in Mathematics?

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• Dual-Boot Problem

  - by user171379

  I have a HP laptop that originally had Windows 7 OS on it, I partioned the drive and allocated 100gb (est.) for the ubuntu install. the install went fine i have ubuntu and windows 7 still on the computer. But I can not get the OS boot screen to show ubuntu as an OS. I can while start up pull up the start menu screen via ESC. Key and press F9 for Boot Device Options and get the boot manager screen and it lists... OS boot manager, Ubuntu (Hitachi HTS 543232A7A384), boot from EFI file, and Notebook Hard Drive... I can boot Ubuntu from this screen by selecting Ubuntu. But i would like to make it easier to access. The computer boot is not for myself otherwise it would not be a problem i would remove windows altogether. I would like to make it basically "User Friendly" if that's at all possible and make the OS boot screen show Ubuntu as a bootable OS as well as Windows 7. on the boot selection screen. Any help on this issue would be greatly appreciated, I've looked to see if i could find the answer and maybe i've overlooked something so here I am. Like i said i need it to be as user friendly as possible and force the user to choose windows 7 or ubuntu not send them into one or the other without them being allowed to choose. I can get any information you might need if necessary but i dont know exactly what you'll need other than what i've given. Ubuntu version is the 13.04 just so you know.

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• Connect to CentOS LAMP instance from Windows PCs

  - by Gnanesh

  I have a CentOS 6 machine running on our network which has a simple LAMP installation on it. I have some files there which I would want to access through other Windows PC which I am able to do so using the IP address of the CentOS machine. Since the IP address of the CentOS machine also could be dynamic I would want to connect to it using the computer / host name But I am not able to do so using the computer / host name of the CentOS machine. Can someone help me point out what I may be missing and help me out to resolve this?

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• Why doesn't my PHP install see the MySQL extension?

  - by Evan Padd

  So I just set up PHP (Version 5.2.17), MySQL (5.5.28), and Apace (2.2) on my Windows 7 computer. I want to test a mysql connection, but the mysql extension is apparently not loaded (based on phpinfo()). Here's what I did: Changed the extension dir in the php.ini (extension_dir = ".;c:\php\ext") and uncommented the extension=php_mysql.dll line Copied libmysql.dll to the Apache's bin directory Added C:\php to the system's $PATH Restarted the server, then the computer And it's still not working. What did I miss? EDIT: I'm looking through phpinfo()'s outout and it says: "Server API | Apache 2.0 Handler" and I'm running 2.2. Is that a problem?

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• Google I/O 2010 - Casting a wide net for all Android devices

  Google I/O 2010 - Casting a wide net for all Android devices Google I/O 2010 - Casting a wide net: How to target all Android devices Android 201 Justin Mattson One of Android's strengths is its flexibility to run on a wide variety of devices. In this session, we will explore the facilities the Android resource system provides to developers to make supporting many devices from one application binary easier, as well as common pitfalls. In addition to hardware heterogeneity, more than one version of Android may exist in the wild at any given time. We will go over strategies for providing cross-version compatibility. For all I/O 2010 sessions, please go to code.google.com From: GoogleDevelopers Views: 4 0 ratings Time: 01:02:15 More in Science & Technology

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• Is there a specific name for the ".\" (dot-slash) shorthand used to log onto a Windows machine?

  - by HopelessN00b

  I guess the title just about says it all. And yes, .\, not that obsolete \. thing. :) For those who don't know, .\ is a shorthand way of saying "this computer" in Windows at a logon screen, which comes in very handy when you don't know or care about the local computer name but need to authenticate against it anyway, such as through RDP or scripting against a set of shared local users and passwords or even locally, if you're unlucky enough to have to physically go to a machine. Anyway, does this have an actual name, and if so, what is it? I feel kind of stupid saying the dot-slash thing, which is how I've been referring to this.

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• What You Said: How You Share Your Photos

  - by Jason Fitzpatrick

  Earlier this week we asked you to share your favorite tips, tricks, and tools for sharing photos with friends and family. Now we’re back to highlight the ways HTG readers share their pics. Image available as wallpaper here. By far the most popular method of photo sharing was to upload the pictures to cloud-based storage. Many readers took advantage of sizable SkyDrive accounts. Dragonbite writes: I used to use PicasaWeb (uploaded from Shotwell) until I got the SkyDrive w/25 GB available. My imported pictures are automatically synchronized with SkyDrive and I then send out a link to whomever I want. I have another (desktop) computer where all of the pictures are stored from mine and my wife’s camera’s imports so if I need to free up some space on SkyDrive or my Windows 7 laptop, I double-check they are in the desktop computer before deleting them from my laptop (and thus from SkyDrive as well). I wish SkyDrive enabled some features like rotate, or searching by Tagged person. 8 Deadly Commands You Should Never Run on Linux 14 Special Google Searches That Show Instant Answers How To Create a Customized Windows 7 Installation Disc With Integrated Updates

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• Can I format a USB key in GUID mode in windows 7 to make it Mac OSX boot friendly?

  - by digiguru

  I have a macbookpro that wont boot properly. I've tried resetting the PRAM (holding down option - alt - P - R), but it doesn't work, it gets halfway through the boot process and says "You need to restart your computer" in several languages. Recently I downloaded a USB Key compatible Linux OS. This USB Key works as a boot loader on Windows machines, but on OSX it can only find the Harddrive partitions when I go into the boot loader menu (holding down Option on startup). I am assuming it is because it is formatted as FAT32, and not GUID Table. I believe my CD drive is also bust, it hasn't worked in a long time. I don't have another Mac computer, so is there a way I can format the USB key as GUID Partition from a windows 7 machine?

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• Using 4 monitors with 2 generic video cards... possible?

  - by Ikram

  I'm thinking of setting up 4 monitors in a grid, using two video cards, one card to feed each pair of monitors through the card's two DVI ports. The most important requirement for me is to have the grid of monitors act as one single huge screen. Is this scenario possible by using two generic cards like Radeon 4870s on a Windows 7 computer? (I've heard of Eyefinity, but 4870s don't have it) Another issue is that I only have one PCI-Express slot on my computer's motherboard, therefore I'll need to use one of the lesser PCI cards as the second video card. Will this pose problems?

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• Google I/O 2012 - Android WebView

  Google I/O 2012 - Android WebView Nicolas Roard Hundred of thousands of Android applications use WebView to display HTML content. In Android 4.0 it's hardware-accelerated, which allows support for HTML5 features such as inline video, CSS 3d, CSS animations, and overflow elements. This talk will give an overview of the underlying implementation in ICS, explain how to best take advantage of WebView in your application, and cover best practices for high-performance HTML code. For all I/O 2012 sessions, go to developers.google.com From: GoogleDevelopers Views: 83 3 ratings Time: 52:04 More in Science & Technology

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• Using Folder Redirection GPO and Offline Files and Folders

  - by user132844

  I want to use Folder Redirection to redirect user's My Documents to a network share. First question is: What is best practices for mapping the drive? Should I use the profile tab in AD with the %username% variable, or a net use logon script, or something else? Second question is: How do I deal with laptops and syncing the network with the local storage? I want to have 2-way syncing so if they manually map their networked home drive and edit it from a different computer, it will sync the newer version to their My Documents folder the next time they connect their normal work computer. I also want to be sure that if they edit a file offline on their laptop while away from the office, that the network version syncs the changes the next time they connect that laptop. Please advise best practices for this scenario in a 2008 R2/Win7 environment. I am also interested in Mac clients for this environment, and while I am very Mac savvy, I would like to hear what others consider to be best practices for Mac network homedirs in a Win environment.

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• What "file system" is supported by Windows and Linux?

  - by Skiroid

  I'm setting up a media centre for my living room so that I'm able to watch downloaded films and TV shows on the big screen. The media centre is an old small computer which will have XBMCbuntu 12 installed on it. Right now, the media centre has a 300 GB HDD partitioned into two: 1) Ext4 50 GB (where I'll install the OS) 2) swap 6 GB (swap area) I'm wanting a third partition which I can store all my media on to. This partition will fill the rest of my HDD. Although, I'm stuck on which file system I should set it to. I need the file system to be fully compatible with Windows as I'm going to be removing the HDD from the media centre and plugging it into my main PC, running Windows 8, to transfer the media onto it. I can't transfer over Wi-Fi as the media centre won't be connected to the Internet. My options are: Ext4 journaling, Ext3 journaling, Ext2 journaling, ReiserFS journaling, btrfs journaling, JFS journaling, XFS journaling, FAT16 and FAT32. I know that FAT32 is compatible with Windows but it can only hold files that are 4 GB or less and my films are well over 4 GB. Some more than 10 GB. Is there a file system I can use which is supported by Linux and pops up under Computer in Windows?

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• XP can't read data from transferred HD

  - by Alexander Miller

  Computer A, running XP, died. XP was installed on a fresh HD in computer B. Slaved data-backup HD from A was installed as slave on B. B will not read it; shows only 2 folders, Recycler and System Volume Info. All of these are older machines with IDE drives. What's going on & how can I read/transfer the data from the transferred drive? This was only a trial run. Actually I will need to transfer the master HD from A - which has XP on it - and read from its data partition because (blush) the backup drive was not up to date.

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• Google I/O Sandbox Case Study: Doubletwist

  Google I/O Sandbox Case Study: Doubletwist We interviewed DoubleTwist at the Google I/O Sandbox on May 11, 2011. They explained to us the benefits of building their DoubleTap application on the Android Platform. DoubleTwist AirSync let's you wirelessly sync your music collection across all your devices. Their new app, DoubleTap, let's you share music between phones by simply tapping the phones together. For more information about developing on Android, visit: developer.android.com For more information on DoubleTwist, visit: www.doubletwist.com From: GoogleDevelopers Views: 13 0 ratings Time: 01:42 More in Science & Technology

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• Huge HDD response time in Resource monitor

  - by Mille

  Just bought all parts for a computer and put it together and installed a fresh version of windows 7. After a while, when using the computer it gets very slow, and even closing down windows can take several minutes. I started to look in the resource monitor and though I found the answer watching my hdd. The thing is that the hdd completes all tests in Seagate's SeaTools for Windows successfully. Which makes me doubt on the problem and weather I can send it in to get an replacement. Suggestions on what it could be and what I can do about it? Here a screenshoot from the resource monitor:

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• Finding Internship Opportunities

  - by mbreedlove

  I am a senior in high school majoring in Computer Science next fall. This summer, I would like to intern at a company relevant to my interests of investment banking and software engineering. What would be some possible ways to find openings? How should I contact them? (E-mail, phone, etc.) Should I prepare and submit a CV? I feel it might be a little dull as it would have no experience or references. After contacting someone about an internship, should I follow up, or just wait for them to contact me? Is there anything else I should do or be aware of?

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