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• How to Turn Your Ubuntu Laptop into a Wireless Access Point

  - by Chris Hoffman

  If you have a single wired Internet connection – say, in a hotel room – you can create an ad-hoc wireless network with Ubuntu and share the Internet connection among multiple devices. Ubuntu includes an easy, graphical setup tool. Unfortunately, there are some limitations. Some devices may not support ad-hoc wireless networks and Ubuntu can only create wireless hotspots with weak WEP encryption, not strong WPA encryption. HTG Explains: What Is RSS and How Can I Benefit From Using It? HTG Explains: Why You Only Have to Wipe a Disk Once to Erase It HTG Explains: Learn How Websites Are Tracking You Online

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• Login screen restarts while entering password

  - by Shane L

  I am having a problem that only occurred after installing the fglrx proprietary driver through the additional drivers app. The exact same issue is described in this question, however it's closed. Must login twice before entering Unity; first login screen has graphical anomalies When I boot up my computer, once I get to lightdm login screen I will start typing my password, and upon the entering of two of my password characters "n2" the screen will start displaying some corruption in the very top edge of the screen, then after I hit the number 2, lightdm seems to crash and it will restart and everything is fine, I can login from that point. So the issue is, every time I reboot, I have to login once, allow lightdm to crash and restart, then login as normal. The issue did not occur prior to installing fglrx, and has happened through several reinstalls.

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• Why do [flush-8:16] and [jbd2/sdb2-8] occasionally use 99.99% disk IO?

  - by ændrük

  Approximately twice a week, the entire graphical interface will lock up for about 10-20 seconds without warning while I am doing simple tasks such as browsing the web or writing a paper. When this happens, GUI elements do not respond to mouse or keyboard input, and the System Monitor applet displays 100% IOWait processor usage. Today, I finally happened to have GNOME Terminal already open when the problem started. Despite other applications such as Google Chrome, Firefox, GNOME Do, and GNOME Panel being unresponsive, the terminal was usable. I ran iotop and observed that commands named [flush-8:16] and [jbd2/sdb2-8] were alternately using 99.99% IO. What are these, and how can I prevent them from causing GUI unresponsiveness? Here is dumpe2fs /dev/sdb2, if it's relevant.

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• How to Back Up Ubuntu the Easy Way with Déjà Dup

  - by Chris Hoffman

  Déjà Dup is a simple — yet powerful — backup tool included with Ubuntu. It offers the power of rsync with incremental backups, encryption, scheduling, and support for remote services. With Déjà Dup, you can quickly revert files to previous versions or restore missing files from a file manager window. It’s a graphical frontend to Duplicity, which itself uses rsync. It offers the power of rsync with a simple interface. Make Your Own Windows 8 Start Button with Zero Memory Usage Reader Request: How To Repair Blurry Photos HTG Explains: What Can You Find in an Email Header?

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• How to Install KVM and Create Virtual Machines on Ubuntu

  - by Chris Hoffman

  If you’re using Linux, you don’t need VirtualBox or VMware to create virtual machines. You can use KVM – the kernel-based virtual machine – to run both Windows and Linux in virtual machines. You can use KVM directly or with other command-line tools, but the graphical Virtual Machine Manager (Virt-Manager) application will feel most familiar to people that have used other virtual machine programs. How to Banish Duplicate Photos with VisiPic How to Make Your Laptop Choose a Wired Connection Instead of Wireless HTG Explains: What Is Two-Factor Authentication and Should I Be Using It?

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• How to Configure the Linux Grub2 Boot Menu the Easy Way

  - by Trevor Bekolay

  We, like many Linux geeks, have had some trouble making the transition to Grub2, or for some of us, learning how to configure it from scratch. Fortunately, a new graphical tool has made this process easy and straightforward! Photo by e_monk. Latest Features How-To Geek ETC Internet Explorer 9 RC Now Available: Here’s the Most Interesting New Stuff Here’s a Super Simple Trick to Defeating Fake Anti-Virus Malware How to Change the Default Application for Android Tasks Stop Believing TV’s Lies: The Real Truth About "Enhancing" Images The How-To Geek Valentine’s Day Gift Guide Inspire Geek Love with These Hilarious Geek Valentines The Citroen GT – An Awesome Video Game Car Brought to Life [Video] Four Awesome TRON Legacy Themes for Chrome and Iron Anger is Illogical – Old School Style Instructional Video [Star Trek Mashup] Get the Old Microsoft Paint UI Back in Windows 7 Relax and Sleep Is a Soothing Sleep Timer Google Rolls Out Two-Factor Authentication

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• Visualize flowchart diagram with multiple end symbols

  - by platzhirsch

  I am looking for a standardize way to visualize the following hierarchical logic: The state of the thread is represented by the answers to the hierarchical set of question You can read this listing like a flowchart, you iterate over the questions decide, go one step deeper and so on. Therefore I thought the best way to visualize it, using a flowchart. The problem is, in this hierarchical set it is possible to end in more than one state and its totally valid. I have never seen a flowchart where you can enter more than one state. Is it still possible and I am missing the right symbol to present this logic or are flowchart not fitting anyway? What other graphical representation could I use, is there something fitting in UML? A non-deterministic state machine seems not to be intuitive enough, transfering it into a deterministic state machine would result in to many states, and so on.

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• What is a practical way to debug Rails?

  - by Joshua Fox

  I get the impression that in practice, debuggers are rarely used for Rails applications. (Likewise for other Ruby apps, as well as Python.) We can compare this to the usual practice for Java or VisualStudio programmers--they use an interactive debugger in a graphical IDE. How do people debug Rails applications in practice? I am aware of the variety of debuggers, so no need to mention those, but do serious Rails programmers work without them? If so, why do you choose to do it this way? It seems to me that console printing has its limits when debugging complex logic.

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• Create bootable USB install image from command line?

  - by j-g-faustus

  I'm trying to create a bootable USB image to install Ubuntu on a new computer. I have done this before following the "create USB drive" instructions for Ubuntu desktop, but I don't have an Ubuntu desktop available. How can I do the same using only the command line? Things I've tried: Create bootable USB on Mac OS X following the ubuntu.com "create USB drive" instructions for Mac: Doesn't boot. usb-creator: According to apt-cache search usb-creator and Wikipedia usb-creator only exists as a graphical tool. "Create manually" instructions at help.ubuntu.com: None of the files and directories described (e.g. casper, filesystem.manifest, menu.lst) exist in the ISO image, and I don't know what has replaced them. (At my disposal is Mac OS X and Ubuntu server; I have neither Ubuntu desktop nor Windows.)

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• How can I prevent [flush-8:16] and [jbd2/sdb2-8] from causing GUI unresponsiveness?

  - by ændrük

  Approximately twice a week, the entire graphical interface will lock up for about 10-20 seconds without warning while I am doing simple tasks such as browsing the web or writing a paper. When this happens, GUI elements do not respond to mouse or keyboard input, and the System Monitor applet displays 100% IOWait processor usage. Today, I finally happened to have GNOME Terminal already open when the problem started. Despite other applications such as Google Chrome, Firefox, GNOME Do, and GNOME Panel being unresponsive, the terminal was usable. I ran iotop and observed that commands named [flush-8:16] and [jbd2/sdb2-8] were alternately using 99.99% IO. What are these, and how can I prevent them from causing GUI unresponsiveness? Details $ mount | grep ^/dev /dev/sda1 on / type ext4 (rw,noatime,discard,errors=remount-ro,commit=0) /dev/sdb2 on /home type ext4 (rw,commit=0) /dev/sda is an OCZ-VERTEX2 and /dev/sdb is a WD10EARS. Here is dumpe2fs /dev/sdb2, if it's relevant.

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• How to install and make development use of gtk+ on Ubuntu 12.04

  - by el10780

  I want to install gtk+ in order to make an application with a graphical environment.I went to the official website of gtk(gtk.org) and I tried to follow the instructions,but I wasn't able to make it work.I think that I have successfully managed to do the whole process till the part that I had to run make install and after that ldconfig.So far so good.After that though the complete chaos.I do not know how to set all these configurations so I can make my compilers know where to look for the include files.I just want to make it work in my Ubuntu when I start making a source file and then compile it and run it.

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• 10 Package Management Operations You Need Synaptic for on Ubuntu

  - by Chris Hoffman

  The Ubuntu Software Center is a solid, user-friendly application, but sometimes you need more power. The Synaptic package manager – previously included with Ubuntu by default – can do many things the Ubuntu Software Center can’t. You can install Synaptic from the Ubuntu Software Center – just search for Synaptic. You can also perform all these operations from the terminal – but, if you need a powerful graphical application for managing packages, Synaptic can’t be beat. How to Play Classic Arcade Games On Your PC How to Use an Xbox 360 Controller On Your Windows PC Download the Official How-To Geek Trivia App for Windows 8

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• Bug in firefox address bar autocomplete running on KDE

  - by marcus

  Has anyone experienced this graphical glitch when typing in Firefox address bar? The drop-down list is not drawn correctly, with some "blocks" missing. After typing more letters or hovering the mouse cursor, the list redraws itself and becomes complete. I'm running Ubuntu 12.04, Firefox 13.0.1 and this only happens in KDE (tested with 4.8.2, 4.8.3 and 4.8.4). It does not happen in Unity or Xfce with the same user profile. If I go to the KDE control panel and disable the Fade effect, the bug starts to happen to almost every menu in the system, including, the taskbar window previews. Enabling the “Fade” effect corrects the bug everywhere except in Firefox. I have an Nvidia card and I am using the proprietary driver (current, not current-updates -- not sure about the difference), but the linked question on an Arch Linux forum says this happen with the open source driver and with other cards too. Does anyone have an idea for a solution?

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• Recommended requirements when outsourcing xhtml/css site building?

  - by András Szepesházi

  I'm considering outsourcing a part of our web application development project for freelancers, namely the site building part. What I mean by site building is the process of creating the xhtml/css template files, with dummy content, from a psd file (or any other graphical layout file). The resulting xhtml/css files will be used by our developers as templates for cms based page rendering. The cms in this case is Drupal, but that might not be of much relevance. I'm looking for a good set of requirements, that will result in good quality xhtml/css code, complying with today's standards leaves little to the freelancer developer's imagination in terms of what I need I'm thinking about requirements like: Valid XHTML 1.0 Transitional document type, validated by validator.w3.org Identical rendering in all modern browsers (FF, Chrome, Safari, Opera, IE7-8) and also in IE6 All opening and closing block-level elements should be properly commented, referencing the functional part of the user interface they belong to (menu, toolbar, content, etc) No inline CSS definitions And so on. How would you organize a list like that? What requirements would you add?

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• Black screen after installing ubuntu 12.04

  - by neodyme

  :) After installing Ubuntu 12.04 from a CD, everything goes perfectly until I restart the computer (after the installation process) im not able to see the login screen, I just get a black screen! so I press randomly keys and sometimes im able to see the background wallpaper but almost instantly the black screen appears. I think that I have to update the nVidia drivers or something like this I tried to start from the recovery mode, update my package, but still the same problem I can't start with the graphical interface as well, i get an error message 'no screen' !! I dont understand why I have this problem because before the installation im able to try ubuntu (from the cd) and works perfect. Thanks !!

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• Anti-aliasing works for debug runtime but not retail runtime

  - by DeadMG

  I'm experimenting with setting various graphical settings in my Direct3D9 application, and I'm currently facing a curious problem with anti-aliasing. When running under the debug runtime, AA works as expected, and I don't have any errors or warnings. But when running under the retail runtime, the image isn't anti-aliased at all. I don't get any errors, the device creates and executes just fine. As I honestly have little idea where the problem is, I will simply give a relatively high-level overview of the architecture involved, rather than specific problematic code. Simply put, I render my 3D content to a texture, which I then render to the back buffer. Any suggestions as to where to look?

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• Nautilus will not launch after update to 12.10

  - by dereksalerno

  I updated to Ubuntu 12.10 today from 12.04 using the graphical update tool. Everything seemed to be fine until I went to open Nautilus, and it would not open. Bizarrely, I am able to open a file that I happen to have on my desktop, but when I click on the launcher, it never opens. When I enter 'nautilus' in the terminal, I get this: (nautilus:8557): Gdk-CRITICAL **: gdk_x11_display_get_xdisplay: assertion `GDK_IS_DISPLAY (display)' failed zsh: segmentation fault (core dumped) nautilus I am not a total novice with ubuntu or linux, but all I can tell is that there is some problem with X. Can someone please point me in the right direction as far as fixing this? I really don't want to have to do a fresh install. Thank you very much.

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• Oracle CRM is ready for the Apple iPad!

  - by divya.malik

  Here is some exciting news to report from the Oracle headquarters today. For all you Apple and Oracle CRM fans, we just announced Oracle CRM support for the Apple iPad. This is great news for anyone seeking richer CRM user experience with the Apple iPad. Oracle’s Siebel CRM can support a rich graphical user interface on Apple’s iPad using the recently released Oracle’s server –based REST ( Representational State Transfer and is a simple way of providing APIs over HTTP) interface and get access to the Siebel metadata. In the words of SVP, Anthony Lye “Siebel CRM support for the Apple iPad is yet another example of Oracle’s dedication to give customers the cutting-edge CRM options on the latest devices so they can grow their business and increase productivity.” For more details on this integration, please read the press release Here is a demo created by Oracle CRM Principal Product Manager, Raj Aggarwal

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• Sound problems in Unity - input but no output

  - by ana

  I am new to Ubuntu, having just installed it for the first time on my Lenovo Thinkpad. Since I installed it I have no sound output whatsoever. However, I can see from the graphical interface in Sound Preferences Input that the sound input appears to be working correctly. I have tried the following: https://help.ubuntu.com/community/HdaIntelSoundHowto https://wiki.ubuntu.com/Audio/InstallingLinuxAlsaDriverModules ubuntu-bug audio I have two sound cards, cat card0/codec* | grep Codec Codec: Conexant CX20585 Codec: Conexant ID 2c06 cat card1/codec* | grep Codec Codec: Nvidia GPU 0b HDMI/DP Codec: Nvidia GPU 0b HDMI/DP Codec: Nvidia GPU 0b HDMI/DP Codec: Nvidia GPU 0b HDMI/DP And now have pretty much run out of ideas. Can anybody help?

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• Is it possible to use RubyGnome2's/QtRuby's HTML renderers to make UI for a Ruby script?

  - by mjr

  I'd like to make a graphical user interface for my script, instead of running it from the console. I'm aware there's a wealth of UI libraries for Ruby, but I'm quite familiar with HTML and CSS and I'd like to use them for building an interface. So the question is: Is it possible to use a HTML rendering library to make such an UI? From what I understand, it's relatively easy to put in a HTML rendered view of something, but is it possible to communicate back with the script? Like when I push that big red button, it actually tells the script to act on it? Obviously it's possible if the script run on the server side, but I'd like to run it as a desktop application.

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• Great event : Microsoft Visual Studio 2010 Launch @ Microsoft TechEd Blore

  - by sathya

  Great event : Microsoft Visual Studio 2010 Launch @ Microsoft TechEd Blore   I was really excited on attending the day 1 of Microsoft TechEd 2010 in Bangalore. This is the first Teched that am attending. The event was really fun filled with lot of knowledge sharing sessions and lots of goodies and gifts by the partners Initially the Event Started by Murthy's Session. He explained about the Developers relating to the 5 elements of nature (Pancha Boothaas) 1. Fire - Passion 2. Wave (Water) - Catch the right wave which we need to apply. 3. Earth - Connections and lots of opportunities around the world 4. Air -  Its whatever we breathe. Developers.. Without them nothing is possible. they are like the air 5. Sky - Cloud based applications   Next the Keynote and the announcement of Visual Studio by SomaSegar. List of things that he delivered his speech on : 1. Announcement of Visual Studio 2010 2. Announcement of .NET 4.0 3. Announcement of Silverlight later this week 4. What is the current Trend? Microsoft has done a research with many developers across the globe and have got the following feedback from the users. Get Lost (interrupted) - When we do some work and somebody is calling or interrepting by someother way we lose track of what we were doing and we need to do from the start Falling Behind- Technology gets updated  phenomenally over a period of time and developers always have a scenario like they are not in the state of the art technology and they always have a doubt whether they are staying updated. Lack of Collobaration - When a Manager asks a person what the team members have done and some might be done and some might not be and finally all are into a state like we dont know where we are. So they have addressed these 3 points in the VS 2010 by the following features : Get Lost - Some cool features which could overcome this. We have some Graphical interface. which could show what we have done and where we are. Some Zoom features in the code level. Falling Behind - Everything is based on .NET language base. 2010 has been built in such a way that if developers know the native language that's enough for building good applications. Lack of Collobaration - Some Dashboard Features which would show where exactly the project is. And a graphical user interface is shown on clicking which it directly drills down even to the code level. 5. An overview on all new features in VS 2010. 6. Some good demos of new features in VS 2010 by Polita and one more girl. Some of the new features included : 1. Team Explorer 2. Zoom in Code 3. Ribbon Development 4. Development in Single Platform for Windows Phone, XBox, Zune, Azure, Web Based and Windows based applications 5. Sequence Diagram Generation directly from code 6. Dashboards to show project status 7. Javascript and JQuery intellisense 8. Native support for JQuery 9. Packaging feature while deploying. 10. Generation of different versions of web.config like Web.Config.Production, Web.Config.Staging, etc. 11. IntelliTrace - Eliminating the "Not Reproducible" statement. 12. Automated User Interface Testing. At last in the closing of the day we had a great event called Demo Extravaganza, where lot of cool projects that were launched by Microsoft and also the projects that are under research were also shown. I got a lot of info about Bing today. BING really rocks!!! It has the following : 1. Visual Search 2. Product based search. For each product different menu filters were provided to make an advanced search 3. BING Maps was awesome!! It zoomed in to the street level and we can assume that we are the persons who are walking or running on the road and we can see the real objects like buildings moving by our side. 4. PhotoSynth was used in BING to show up all the images taken around the globe in a 3D format. 5. Formula - If we give some formula it automatically gives the value for the variable or derivation of expression Also some info about some kool touch apps which does an authentication and computation of Teched Attendee's Points that they have scored and the sessions attended. One guy won an XBOX in lucky draw as a gift. There were lot of Partner Stalls like Accenture,Intel,Citrix,MicroFocus,Telerik,infragistics,Sapient etc. Some Offers were provided for us like 50% off on Certifications, 1 free Elearning Course, etc. Stay tuned!! Wil update you on other events too..

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• Command line method to find disk usage of camera mounted using gvfs

  - by Hamish Downer

  When my camera was mounted on /media I could use the standard tools (df) to see the disk usage of the card in my camera. However now the camera is mounted using gvfs, and df seems to ignore it. I've also tried pydf and discus to no avail. The camera is definitely available through nautilus, and when I select the camera in nautlius, the status bar tells me the amount of disk free. I can also open the ~/.gvfs/ folder in nautilus and right click on the camera folder and get the disk usage in a graphical way. But that is no use for a script. Are there command line tools that are the equivalent of df for gvfs filesystems? Or even better, a way to make df report on gvfs filesystems?

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• Arrays for a heightmap tile-based map

  - by JPiolho

  I'm making a game that uses a map which have tiles, corners and borders. Here's a graphical representation: I've managed to store tiles and corners in memory but I'm having troubles to get borders structured. For the tiles, I have a [Map Width * Map Height] sized array. For corners I have [(Map Width + 1) * (Map Height + 1)] sized array. I've already made up the math needed to access corners from a tile, but I can't figure out how to store and access the borders from a single array. Tiles store the type (and other game logic variables) and via the array index I can get the X, Y. Via this tile position it is possible to get the array index of the corners (which store the Z index). The borders will store a game object and accessing corners from only border info would be also required. If someone even has a better way to store these for better memory and performance I would gladly accept that. EDIT: Using in C# and Javascript.

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• Better drivers for SiS 650/740 integrated video?

  - by Bart van Heukelom

  I installed Xubuntu 10.10 on an old box today and the graphical performance is horrid. According to lspci, the video card is this: 01:00.0 VGA compatible controller: Silicon Integrated Systems [SiS] 65x/M650/740 PCI/AGP VGA Display Adapter (prog-if 00 [VGA controller]) Subsystem: ASUSTeK Computer Inc. Device 8081 Flags: 66MHz, medium devsel, IRQ 11 BIST result: 00 Memory at f0000000 (32-bit, prefetchable) [size=128M] Memory at e7800000 (32-bit, non-prefetchable) [size=128K] I/O ports at d800 [size=128] Expansion ROM at <unassigned> [disabled] Capabilities: <access denied> Kernel modules: sisfb Is there a way to make it faster? Alternative drivers? The additional drivers tool shows nothing. I'm specifically interested in improving Java's Java2D rendering speed, because I'll be running a "stat screen" written in that language on it.

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• Are there any good html 5 mmo design tutorials?

  - by Dwight Spencer

  Hey all. I got a rather inspired after playing gaia online's zOMG and wanted to revive an old project idea I've had laying around for a few years now. I'm looking to work with html5 (ie canvas, svg based sprites, & WebGL) to build a graphical web based MUD/MMO. Obviously, this is a new take on an old idea and after searching google I haven't really turned up many good resources. But does anyone have any tutorials or other resources to point me in the right direction?

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