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• UPDATE MANAGER UNABLE TO UPDATE

  - by muguro

  Requires installation of untrusted packages The action would require the installation of packages from not authenticated sources. i get this error every time i try updating. the system shows that it has 466 updates but fails after clicking update more details have this accountsservice apparmor apport apport-gtk apt apt-transport-https apt-utils aptdaemon aptdaemon-data at-spi2-core bamfdaemon base-files bcmwl-kernel-source bind9-host compiz compiz-core compiz-gnome compiz-plugins-default cron cups cups-bsd cups-client cups-common cups-filters cups-ppdc dbus dbus-x11 dconf-gsettings-backend dconf-service desktop-file-utils dmsetup dnsutils empathy empathy-common eog evince evince-common evolution-data-server evolution-data-server-common firefox firefox-globalmenu firefox-gnome-support firefox-locale-en fontconfig fontconfig-config fonts-liberation fonts-opensymbol foomatic-filters gcalctool gdb ghostscript ghostscript-cups ghostscript-x ginn gir1.2-atspi-2.0 gir1.2-dbusmenu-glib-0.4 gir1.2-dbusmenu-gtk-0.4 gir1.2-gst-plugins-base-0.10 gir1.2-gtk-3.0 gir1.2-gtksource-3.0 gir1.2-gudev-1.0 gir1.2-javascriptcoregtk-3.0 gir1.2-launchpad-integration-3.0 gir1.2-pango-1.0 gir1.2-rb-3.0 gir1.2-totem-1.0 gir1.2-ubuntuoneui-3.0 gir1.2-unity-5.0 gir1.2-webkit-3.0 glib-networking glib-networking-common glib-networking-services gnome-accessibility-themes gnome-control-center gnome-control-center-data gnome-desktop3-data gnome-games-data gnome-icon-theme gnome-media gnome-orca gnome-settings-daemon gnome-sudoku gnomine gnupg google-talkplugin gpgv grub-common grub-pc grub-pc-bin grub2-common gstreamer0.10-alsa gstreamer0.10-plugins-base gstreamer0.10-plugins-base-apps gstreamer0.10-x gvfs gvfs-backends gvfs-bin gvfs-common gvfs-daemons gvfs-fuse gvfs-libs gwibber gwibber-service gwibber-service-facebook gwibber-service-identica gwibber-service-twitter hdparm hplip hplip-data indicator-sound initscripts isc-dhcp-client isc-dhcp-common jockey-common jockey-gtk krb5-locales landscape-client-ui-install language-pack-en language-pack-en-base language-pack-gnome-en language-pack-gnome-en-base launchpad-integration libaccountsservice0 libapt-inst1.4 libapt-pkg4.12 libart-2.0-2 libasound2 libatspi2.0-0 libbamf0 libbamf3-0 libbind9-80 libc-bin libc-dev-bin libc6 libc6-dev libcairo-gobject2 libcairo2

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• GDM locale problems

  - by Simón

  I have two problems with GDM on Ubuntu 10.04. The first is with locales. In my system I have defined: $ cat /etc/environment PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games" LANG="es_ES.UTF-8" LANGUAGE="es_ES:es:en_US:en" $ cat /etc/default/locale LANG="es_ES.UTF-8" LANGUAGE="es_ES:es:en_US:en" $ cat /var/lib/locales/supported.d/local es_ES UTF-8 es_ES.UTF-8 UTF-8 en_US UTF-8 en_US.UTF-8 UTF-8 But when I enter in gnome desktop: $ locale LANG=es_ES LANGUAGE=es_ES:es:en_US:en LC_CTYPE="es_ES" LC_NUMERIC="es_ES" LC_TIME="es_ES" LC_COLLATE="es_ES" LC_MONETARY="es_ES" LC_MESSAGES="es_ES" LC_PAPER="es_ES" LC_NAME="es_ES" LC_ADDRESS="es_ES" LC_TELEPHONE="es_ES" LC_MEASUREMENT="es_ES" LC_IDENTIFICATION="es_ES" LC_ALL= I have deleted ~/.dmrc and I have restarted the system but nothing. GDM login screen also doesn't permit change this setting. However, in the text terminals (tty1,...): $ locale LANG=es_ES.UTF-8 LANGUAGE=es_ES:es:en_US:en LC_CTYPE="es_ES.UTF-8" LC_NUMERIC="es_ES.UTF-8" LC_TIME="es_ES.UTF-8" LC_COLLATE="es_ES.UTF-8" LC_MONETARY="es_ES.UTF-8" LC_MESSAGES="es_ES.UTF-8" LC_PAPER="es_ES.UTF-8" LC_NAME="es_ES.UTF-8" LC_ADDRESS="es_ES.UTF-8" LC_TELEPHONE="es_ES.UTF-8" LC_MEASUREMENT="es_ES.UTF-8" LC_IDENTIFICATION="es_ES.UTF-8" LC_ALL= The solution to problem is to edit .drmc file, but I think this isn't the right way. Why doesn't GDM read/apply the system locales? Why don't I see, in GDM login screen, the box to change the locale?

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• chrome memory and cpu footprint

  - by nmizar

  I've searched the forums for an answer but I couldn't find quite the answer I was looking for [1] , so I thought I it could as well be of interest to more people around here. I carry out a big part of my job on the browser (or for the browser, if you want to put it that way). I tend to use Chrome, because it's got natively many of the newest features that I need (DevTools stuff, mainly but not only). BTW, I'm usually running the last available Chrome version/build on a desktop Vaio with 4GB RAM and dual core CPU and Ubuntu 12.04 as distro and Gnome as window manager. So, I was curious about a) why does Chrome spawn so many threads even opening only three of four tabs and b) is there any way to allocate more memory to Chrome to prevent its performance from degrading? Thanks in advance, Nacho PS [1] I found threads about Chrome freezing or running out of memory but not about the reasons for this being so or for avoiding it to happen. PPS Of course, I could always buy a newer and more capable machine and that is exactly what I'm trying to evaluate: is this a question of outdated hardware or the problem will keep appearing on any (decently but not hugely sized) machine?

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• WouldISurviveANuke Assesses Your Distance From Nuclear War Strike Sites

  - by Jason Fitzpatrick

  WouldISurviveANuke is a morbid Google Maps mashup that plots out the effective radius of nuclear weapons on major metropolitan areas, your distance from them, and your chances of survival. Visit the site, plug in your zipcode, and set the parameters (how big of a nuclear weapon and how large the nearest target city needs to be) to find out if you’re in the blast radius. We plugged in a downtown address in Detroit, MI. The verdict? Neither we nor the cockroaches will be coming out alive. If you plug in a location far enough away from the direct blast radius you’ll also get a quality of life report that spells out the effects of a local nuclear strike. As far as startling anti-nuclear proliferation arguments go, WouldISurviveANuke is an effective and interactive demonstration. Hit up the link below to try it out. WouldISurviveANuke [via Y! Tech] How to Run Android Apps on Your Desktop the Easy Way HTG Explains: Do You Really Need to Defrag Your PC? Use Amazon’s Barcode Scanner to Easily Buy Anything from Your Phone

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• 12.04 LTS boot hangs at "SP5100 TCO timer: mmio address 0xfec000f0 already in use", didn't yesterday

  - by DarkIron112

  Dual-booting Windows 7 and Ubuntu 12.04 LTS. I went to reboot from Win to Ubu, and found a few interesting things. My POST screen is covered in blocks of epileptic colors until I hit GRUB, which continues when I try to boot into Ubuntu. These color blocks don't appear when I use my on-board VGA, so I'll just attribute to that. Grub dimensions are swapped (card vs onboard, probably), but, when interfacing with onboard VGA, the Grub Timeout Counter works and when using my card, it does not (see "[!!!]" below for more information) Booting into Ubuntu directly causes the error: SP5100 TCO timer: mmio address 0xfec000f0 already in use Booting into recovery mode, meanwhile, and then "resuming normal boot" gets me to the desktop without native 1440x900 resolution and graphic drivers can't tell the monitor it's looking at (I assume this is because it's not a full graphic boot, and as it says, some drivers won't run?) [!!!] When I reboot after going into recovery mode, the countdown timer works ONCE, puts me back into default ubuntu boot, and then does not work again until after another recovery-mode boot. Windows 7 can boot perfectly with no issues whatsoever from epilepsy color blocks or driver detection. This makes me wonder /why/ the POST screen can't handle my video card anymore. Amidst all the diagnostics, I opened my case and re-seated the videocard securely, ensuring it wasn't a loose connection-- But this did nothing to help me. Hardware I am running an NVidia GeForce GTX 8800 video card in a PCI slot. I have 4.8GiB memory, an AMD Athlon II Quad-core 640 Processor, on an MSI K9N6GM Series Mobo. Onboard video is an NVidia GeForce MCP61(V/S/P) card. Note: I did not have any of these problems yesterday, and I have been using Ubuntu intensively for a week, though it's been working flawlessly for months. I've recently been using it to mod my Android phone, perhaps I messed something up in the file system?

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• Canon MG6100 series USB Printer not mounting

  - by user35201

  Printer MP6150 driver installed itself upon plugging in the printer. Printer is recognized (lsusb shows it) but does not mount. If the printer is recognized, the driver must be working (or?), but something is blocking the system from mounting the printer. Tried the usual things: power of printer, restart Ubuntu etc. Listed below result of lsusb and fstab: hans@kontor-linux:~$ lsusb Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 001 Device 004: ID 04a9:174a Canon, Inc. Bus 002 Device 002: ID 1058:1001 Western Digital Technologies, Inc. External Hard Disk [Elements] Bus 004 Device 002: ID 046d:c517 Logitech, Inc. LX710 Cordless Desktop Laser hans@kontor-linux:~$ sudo cat /etc/fstab [sudo] password for hans: # /etc/fstab: static file system information. # # Use 'blkid' to print the universally unique identifier for a # device; this may be used with UUID= as a more robust way to name devices # that works even if disks are added and removed. See fstab(5). # # <file system> <mount point> <type> <options> <dump> <pass> proc /proc proc nodev,noexec,nosuid 0 0 # / was on /dev/sda6 during installation UUID=eaf3b38d-1c81-4de9-98d4-3834d674ff6e / ext4 errors=remount-ro 0 1 # swap was on /dev/sda5 during installation UUID=93a667d3-6132-45b5-ad51-1f8a46c5b437 none swap sw 0 0

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• HTG Explains: What Is Bitcoin, the Virtual Digital Currency?

  - by YatriTrivedi

  Bitcoin is a virtual currency that employs some very interesting principles. Here’s the skinny on what exactly it is and how the fascinating technology behind it works. Disclaimer: This is NOT financial or legal advice. This. Is. NOT. Financial. Or. Legal. Advice. This is not, in any way, shape, or form, financial or legal advice. We’re covering this topic because of the technological implementations it uses and the innovations it attempts to make. If you do anything because of this post, we are not responsible because this is NOT financial or legal advice. ^_^ Latest Features How-To Geek ETC Have You Ever Wondered How Your Operating System Got Its Name? Should You Delete Windows 7 Service Pack Backup Files to Save Space? What Can Super Mario Teach Us About Graphics Technology? Windows 7 Service Pack 1 is Released: But Should You Install It? How To Make Hundreds of Complex Photo Edits in Seconds With Photoshop Actions How to Enable User-Specific Wireless Networks in Windows 7 The History Of Operating Systems [Infographic] DriveSafe.ly Reads Your Text Messages Aloud The Likability of Angry Birds [Infographic] Dim an Overly Bright Alarm Clock with a Binder Divider Preliminary List of Keyboard Shortcuts for Unity Now Available Bring a Touch of the Wild West to Your Desktop with the Rango Theme for Windows 7

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• Diablo 3 "freezes" periodically

  - by Shauna

  I'm running Diablo 3 (start edition, digital download) on the following: Ubuntu 12.04 64-bit (stock Unity, Gnome, etc; kernel version 3.2.0-29-generic) Wine version 1.5.11 (base, from Wine's PPA, game started with setarch i386 -3) Intel i7 920 CPU nVidia GTX260 with driver version 295.49 ("post-release updates" entry within the proprietary drivers tool), dual monitors 6GB RAM Every so often (and what appears to be at random), the game video will freeze up. I can still move the mouse, and it reacts to ctrl+alt+f2 to drop into text mode, but I can't get back to the desktop (which means I can check terminal to see what's going on after launching from terminal, especially since even in windowed mode, the secondary screen gets shut off by the game), and I can't continue to play the game. In order to get it running again, I have to restart lightdm, then relaunch the game (or, in a couple of rare cases, I had to restart the computer entirely, because running sudo service lightdmn [stop/start] doesn't appear to react). Turning down the video settings seems to have helped in some cases, but not all of them. Times it's frozen on me: The beginning of The Fallen Start quest part 6 - kill the Wretched Mother, right as you walk out of New Tristram and engage in the monsters on the northern path (repeatedly froze here until I adjusted the graphics down) Within the cinematic/event upon finding Deckard Cain While fighting the skeletons to protect Deckard Cain When about to enter Leoric's passage after Cain sends you back to where you found him That's as far as I've gotten through the game so far. Additionally, this doesn't happen on other games I play and seems to only occur with Diablo 3. Has anyone else run into this issue and know a possible cause or fix, or at least know where I can look (and what to look for) to figure out why this is happening?

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• Did Oracle make public any plans to charge for JDK in the near future? [closed]

  - by Eduard Florinescu

  I recently read an article: Twelve Disaster Scenarios Which Could Damage the Technology Industry which mentioned among other the possible "disaster scenarios" also: Oracle starts charging for the JDK, giving the following as argument: Oracle could start requiring license fees for the JDK from everyone but desktop users who haven't uninstalled the Java plug-in for some reason. This would burn down half the Java server-side market, but allow Oracle to fully monetize its acquisitions and investments. [...] Oracle tends to destroy markets to create products it can fully monetize. Even if you're not a Java developer, this would have a ripple effect throughout the market. [...] I actually haven't figured out why Larry hasn't decided Java should go this route yet. Some version of this scenario is actually in my company's statement of risks. I know guessing for the future is impossible, and speculating about that would be endless so I will try to frame my question in an objective answarable way: Did Oracle or someone from Oracle under anonymity, make public, or hinted, leaked to the public such a possibility or the above is plain journalistic speculation? I am unable to find the answer myself with Google generating a lot of noise by searching JDK.

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• CodePlex Daily Summary for Friday, December 14, 2012

  CodePlex Daily Summary for Friday, December 14, 2012Popular ReleasesCommand Line Parser Library: 1.9.3.31 rc0: Main assembly CommandLine.dll signed. Removed old commented code. Added missing XML documentation comments. Two (very) minor code refactoring changes.BlackJumboDog: Ver5.7.4: 2012.12.13 Ver5.7.4 (1)Web???????、???????????????????????????????????????????VFPX: ssClasses A1.0: My initial release. See https://vfpx.codeplex.com/wikipage?title=ssClasses&referringTitle=Home for a brief description of what is inside this releasesb0t v.5: sb0t 5.01 alpha 1: GUI support for Spanish language (Thank you Di3go and Oysterhead) Captcha database updates Bug fix where some hosts could not joinHome Access Plus+: v8.6: v8.6.1213.1220 Added: Group look up to the visible property of the Booking System Fixed: Switched to using the outlook/exchange thumbnailPhoto instead of jpegPhoto Added: Add a blank paragraph below the tiles. This means that the browser displays a vertical scroller when resizing the window. Previously it was possible for the bottom edge of a tile not to be visible if the browser window was resized. Added: Booking System: Only Display Day+Month on the booking Home Page. This allows for the cs...Layered Architecture Solution Guidance (LASG): LASG 1.0.0.8 for Visual Studio 2012: PRE-REQUISITES Open GAX (Please install Oct 4, 2012 version) Microsoft® System CLR Types for Microsoft® SQL Server® 2012 Microsoft® SQL Server® 2012 Shared Management Objects Microsoft Enterprise Library 5.0 (for the generated code) Windows Azure SDK (for layered cloud applications) Silverlight 5 SDK (for Silverlight applications) THE RELEASE This release only works on Visual Studio 2012. Known Issue If you choose the Database project, the solution unfolding time will be slow....Fiskalizacija za developere: FiskalizacijaDev 2.0: Prva prava produkcijska verzija - Zakon je tu, ova je verzija uskladena sa trenutno važecom Tehnickom specifikacijom (v1.2. od 04.12.2012.) i spremna je za produkcijsko korištenje. Verzije iza ove ce ovisiti o naknadnim izmjenama Zakona i/ili Tehnicke specifikacije, odnosno, o eventualnim greškama u radu/zahtjevima community-a za novim feature-ima. Novosti u v2.0 su: - That assembly does not allow partially trusted callers (http://fiskalizacija.codeplex.com/workitem/699) - scheme IznosType...Simple Injector: Simple Injector v1.6.1: This patch release fixes a bug in the integration libraries that disallowed the application to start when .NET 4.5 was not installed on the machine (but only .NET 4.0). The following packages are affected: SimpleInjector.Integration.Web.dll SimpleInjector.Integration.Web.Mvc.dll SimpleInjector.Integration.Wcf.dll SimpleInjector.Extensions.LifetimeScoping.dllBootstrap Helpers: Version 1: First releasesheetengine - Isometric HTML5 JavaScript Display Engine: sheetengine v1.2.0: Main featuresOptimizations for intersectionsThe main purpose of this release was to further optimize rendering performance by skipping object intersections with other sheets. From now by default an object's sheets will only intersect its own sheets and never other static or dynamic sheets. This is the usual scenario since objects will never bump into other sheets when using collision detection. DocumentationMany of you have been asking for proper documentation, so here it goes. Check out the...DirectX Tool Kit: December 11, 2012: December 11, 2012 Ex versions of DDSTextureLoader and WICTextureLoader Removed use of ATL's CComPtr in favor of WRL's ComPtr for all platforms to support VS Express editions Updated VS 2010 project for official 'property sheet' integration for Windows 8.0 SDK Minor fix to CommonStates for Feature Level 9.1 Tweaked AlphaTestEffect.cpp to work around ARM NEON compiler codegen bug Added dxguid.lib as a default library for Debug builds to resolve GUID link issuesDNN Flash Viewer: Source (same as default release): SourceArcGIS Editor for OpenStreetMap: ArcGIS Editor for OSM 2.1 Final for 10.1: We are proud to announce the release of ArcGIS Editor for OpenStreetMap version 2.1. This download is compatible with ArcGIS 10.1, and includes setups for the Desktop Component, Desktop Component when 64 bit Background Geoprocessing is installed, and the Server Component. Important: if you already have ArcGIS Editor for OSM installed but want to install this new version, you will need to uninstall your previous version and then install this one. This release includes support for the ArcGIS 1...SharpCompress - a fully native C# library for RAR, 7Zip, Zip, Tar, GZip, BZip2: SharpCompress 0.8.2: This release just contains some fixes that have been done since the last release. Plus, this is strong named as well. I apologize for the lack of updates but my free time is less these days.Media Companion: MediaCompanion3.511b release: Two more bug fixes: - General Preferences were not getting restored - Fanart and poster image files were being locked, preventing changes to themVodigi Open Source Interactive Digital Signage: Vodigi Release 5.5: The following enhancements and fixes are included in Vodigi 5.5. Vodigi Administrator - Manage Music Files - Add Music Files to Image Slide Shows - Manage System Messages - Display System Messages to Users During Login - Ported to Visual Studio 2012 and MVC 4 - Added New Vodigi Administrator User Guide Vodigi Player - Improved Login/Schedule Startup Procedure - Startup Using Last Known Schedule when Disconnected on Startup - Improved Check for Schedule Changes - Now Every 15 Minutes - Pla...VidCoder: 1.4.10 Beta: Added progress percent to the title bar/task bar icon. Added MPLS information to Blu-ray titles. Fixed the following display issues in Windows 8: Uncentered text in textbox controls Disabled controls not having gray text making them hard to identify as disabled Drop-down menus having hard-to distinguish white on light-blue text Added more logging to proxy disconnect issues and increased timeout on initial call to help prevent timeouts. Fixed encoding window showing the built-in pre...WPF Application Framework (WAF): WPF Application Framework (WAF) 2.5.0.400: Version 2.5.0.400 (Release): This release contains the source code of the WPF Application Framework (WAF) and the sample applications. Requirements .NET Framework 4.0 (The package contains a solution file for Visual Studio 2010) The unit test projects require Visual Studio 2010 Professional Changelog Legend: [B] Breaking change; [O] Marked member as obsolete Update the documentation. InfoMan: Write the documentation. Other Downloads Downloads OverviewBee OPOA Platform: Bee OPOA Demo V1.0.001: Initial version.Microsoft Ajax Minifier: Microsoft Ajax Minifier 4.78: Fix for issue #18924 - using -pretty option left in ///#DEBUG blocks. Fix for issue #18980 - bad += optimization caused bug in resulting code. Optimization has been removed pending further review.New Projects.net demo: This is a demo project. 12141325: tesing12141327: testingAW User Applications: This project is used to enable AccessWeb User Applications for Database Application Users. Outline: The degree of professionalism permissions access options OkBattery Life Live Tile: Windows 8 app that displays the battery percentage in a live tile on the homescreen with the help of a system tray application. only available on intel devices.CMS .NET: CMS .net HTML5 multilingual+FORUM+GALLERY+Responsive Web Design+WIKI+COMMUNITY: Easy user-friendly, fast 10X,;multi site in different domain; multi servercookieTerm: A simple BBS terminal that can run in unicode environmentDevCow: This is a location for all of the community projects that help support DevCow.comDevville.NET: The project contains some of a very useful helpers and extension methods for .NET and SharePoint.Echo Garden: Echo Garden is a modification of Alphalabs' Windows Phone app, Node Garden, that represents the nodes through sound.FluentNavigationCoercion: Simple library that makes navigation coercion on WP simple and readableGet Music: Internet radio's parser. Parse radio logs, store received data to store. Make statistic analyze of radio. jKinect - Kinectify any web site.: Provide a unique Kinect User Experience for your website. With jKinect, turn any web site into a Kinect enabled web application.Lagos Single Mothers: This is a web2.0 site that will help single mothers in the city of Lagos (in Nigeria) share ideas on how to raise children, as single mothers. LIF11: Projet logique classiqueMalkiSum: Malki SumMyLittleAdressBook: Just a little project to test MVVM pattern on a multiview solution with authentificationNopCommerce 2.7x Multi Store version: NopCommerce 7.x Multi Store / Vendor versionPodcastToMp3: Automated tool to make MP3s from M4A chapters.Primer Demo ClickOnce: Demo ClickOncePulsus: A simple .NET logging library for modern applications.Sharp6800 - ET-3400 Microprocessor Trainer Emulator: A Heathkit ET-3400 Microprocessor Trainer Emulator. It features a 6800 emulator core and simulated 7-segment display and keypad. Written in 100% C#TEdit: TEdit is a source code editor that mainly used for InfoBasic Programming language. Running in Windows platform. Developed using Scintilla & ScintillaNet.VsPackageUtils: VsPackageUtils is a basic utility helper class for common operations in a VsPackage.WiFiShare: WiFiShare shares your LAN connection to WiFi using Internet Connection Sharing(ICS) from your Windows operating system.Windows 8 RSS App Kit: A Windows 8 App "kit" that allows you to build a fixed-list RSS reader with auto-image-detection in feeds.

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• Performance of concurrent software on multicore processors

  - by Giorgio

  Recently I have often read that, since the trend is to build processors with multiple cores, it will be increasingly important to have programming languages that support concurrent programming in order to better exploit the parallelism offered by these processors. In this respect, certain programming paradigms or models are considered well-suited for writing robust concurrent software: Functional programming languages, e.g. Haskell, Scala, etc. The actor model: Erlang, but also available for Scala / Java (Akka), C++ (Theron, Casablanca, ...), and other programming languages. My questions: What is the state of the art regarding the development of concurrent applications (e.g. using multi-threading) using the above languages / models? Is this area still being explored or are there well-established practices already? Will it be more complex to program applications with a higher level of concurrency, or is it just a matter of learning new paradigms and practices? How does the performance of highly concurrent software compare to the performance of more traditional software when executed on multiple core processors? For example, has anyone implemented a desktop application using C++ / Theron, or Java / Akka? Was there a boost in performance on a multiple core processor due to higher parallelism?

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• How to configure chrome to open magnet url's with deluge?

  - by michael_n

  After upgrading to Ubuntu 11.04 (natty) from 10.10, I can no longer open magnet (torrent) links in Chromium, and set deluge to automatically open and accept the url. (Edit: currently ".torrent" files are not a problem, but magnet url's, e.g. of the form "magnet:?xt=urn:...", are now the only problem. Not sure if something updated...?) Rather, now only transmission will automatically open torrents, magnet links, etc. There doesn't seem to be a way to set deluge to be the default torrent client. (And, there also doesn't seem to be a "default application" setting for bittorrent client to replace transmission w/ deluge.) Notes: I found some old threads on this issue, and only a one or two newer ones. The newer threads seem to suggest xdg-open is to blame. But not many people seem to be running into this problem, so... maybe it's just me? Not using firefox, so manually setting apps for mime-types or extensions doesn't work (that's not an option in chrome/chromium, afaik -- you have to rely on the OS) I uninstalled transmission, and then basically nothing happened when clicking on torrent/magnet links. running from the shell also opens transmission (not deluge): xdg-open "magnet:?xt=urn:bt..&tr=http://tracker.....com/announce" My current url handlers are: $ gconftool -a /desktop/gnome/url-handlers/magnet command = deluge "%s" needs_terminal = false enabled = true The only work-around I have (which does work) is to rename /usr/bin/transmission-gtk{,.bak} and create my own /usr/bin/transmission-gtk : $ cat /usr/bin/transmission-gtk #!/bin/bash deluge "$@" Anyone else run into this, know of a bug, workaround, or...?

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• What You Said: Cutting the Cable Cord

  - by Jason Fitzpatrick

  Earlier this week we asked you if you’d cut the cable and switched to alternate media sources to get your movie and TV fix. You responded and we’re back with a What You Said roundup. One of the recurrent themes in reader comments and one, we must admit, we didn’t expect to see with such prevalence, was the number of people who had ditched cable for over-the-air HD broadcasts. Fantasm writes: I have a triple HD antenna array, mounted on an old tv tower, each antenna facing out from a different side of the triangular tower. On tope of the tower are two 20+ year old antennas… I’m 60 miles from toronto and get 35 channels, most in brilliant HD… Anything else, comes from the Internet… Never want cable or sat again… Grant uses a combination of streaming services and, like Fantasm, manages to pull in HD content with a nice antenna setup: We use Netflix, Hulu Plus, Amazon Prime, Crackle, and others on a Roku as well as OTA on a Tivo Premier. The Tivo is simply the best DVR interface I have ever used. The Tivo Netflix application, though, is terrible, and it does not support Amazon Prime. Having both boxes makes it easy to use all of the services. 6 Ways Windows 8 Is More Secure Than Windows 7 HTG Explains: Why It’s Good That Your Computer’s RAM Is Full 10 Awesome Improvements For Desktop Users in Windows 8

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• Canon MG6100 series USB printer receives job but doesn't physically print

  - by Old-linux-fan

  Printer MP6150 driver installed itself upon plugging in the printer. Printer is recognized (lsusb shows it) but does not mount. If the printer is recognized, the driver must be working (or?), but something is blocking the system from mounting the printer. Tried the usual things: power of printer, restart Ubuntu etc. Listed below result of lsusb and fstab: hans@kontor-linux:~$ lsusb Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 001 Device 004: ID 04a9:174a Canon, Inc. Bus 002 Device 002: ID 1058:1001 Western Digital Technologies, Inc. External Hard Disk [Elements] Bus 004 Device 002: ID 046d:c517 Logitech, Inc. LX710 Cordless Desktop Laser hans@kontor-linux:~$ sudo cat /etc/fstab [sudo] password for hans: # /etc/fstab: static file system information. # # Use 'blkid' to print the universally unique identifier for a # device; this may be used with UUID= as a more robust way to name devices # that works even if disks are added and removed. See fstab(5). # # <file system> <mount point> <type> <options> <dump> <pass> proc /proc proc nodev,noexec,nosuid 0 0 # / was on /dev/sda6 during installation UUID=eaf3b38d-1c81-4de9-98d4-3834d674ff6e / ext4 errors=remount-ro 0 1 # swap was on /dev/sda5 during installation UUID=93a667d3-6132-45b5-ad51-1f8a46c5b437 none swap sw 0 0

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• Unable to record sound from web browser (firefox / chromium ) using recordmydesktop

  - by thamurath

  I have to do some screencast tutorials and i am using recordmydesktop with gtk frontend to do it. I need to record also the sound and here is where i have found the problem. It took me some time, but now I can record the sound from almost every application in my desktop ... almost. I need to capture some sound from a web application using java, but when i load the page nothing appears in the playback tab of pavucontrol. I think this is the problem, because if there is no sound stream i think the recordmydesktop program thinks there is no sound to record ... the funny thing is that I can ear the sound in my speakers! I have tried with Firefox and Chromium with no success. Although I have been able to record youtube videos without problem, so it seems that java is the key here. Any suggestion or idea? P.S.: I am using Ubuntu 11.10 with this configuration. ( if more information is needed please let me know) sight i cannot post images ... so I have an audigy2 sound card using Analog Stereo Output profile. I have also an "Internal Audio" device, but i have it with the "Off" profile. In recordmydesktop-Advanced-Sound: Device = default

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• Disabling shutdown command for all users, even root - consequences?

  - by Rich

  I would like to disable the shutdown command for all users, even root, on an Ubuntu Server installation. The reason I want to do this is to ensure that I don't get into the habit of shutting down the machine in this way, as I SSH into a lot of production machines at the same time as this one, and I don't want to accidentally shutdown one of the other machines by typing the command into the wrong window. The server I want do disable shutdown on only runs inside VirtualBox on my Windows desktop, and I only use it for local testing so it is not a problem if I can't shut it down from the command line. I have already mitigated the problem a bit by ensuring I have a different password on the VirtualBox image, but obviously if I am within the sudo 'window' on one of the production machines, I could still accidentally shut it down. My questions are: How do I disable the shutdown command? If I do disable the shutdown command, are there any consequences that I should be made aware of? Most specifically, will it disable support for ACPI shutdown that is the equivalent of pressing the power button on a physical machine? Could it affect other generic applications? For information, I just use this VirtualBox image for trying out shell scripts, running Tomcat and Java, and that kind of thing.

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• Personalisation of the Ubuntu interface

  - by Ben

  It's quite hard to phrase this question as the answer is very subjective and I don't know the right terminology to ask for what I want, but I will try my best. I love linux and would love to use it full-time as my main OS but the one think I have a problem with is the look of it. In my opinion it looks like it was designed for a child and I like my computer to look stylish rather than dated (this is opinion obviously). I like the look of OSX but there are certain things that I don't like, so no, I am not asking the age old question of "how do I make ubunutu look like OSX"...most of the attempts I have seen of this have been pretty poor when put up against the real thing so I just want to take certain things from it. Things I'd like to take from OSX: Spotlight (I don't like the Unity dashboard-esque thingy) Expose Spaces Dock (at the bottom) Icons (apart from the apple one) Look of file manager - its more pleasant to navigate around the file system. Closing an application window doesn't actually quit the program, so when you next launch it - it is instantaneous. Global menu (at the top) What are the latest Ubuntu alternatives to these? When it comes to actually changing the look of Ubuntu what should I be looking at? I know the following exists: Shell theme Icons Fonts ...but is there anything else I need to look into to actually change the look? I hear the term "Window Manager" thrown around, but I don't actually know what that is. What are good sources for reviews/links to the latest and greatest customisation techniques? Ubuntu now comes with Unity which I don't like very much. What are my alternatives? Should I look into Gnome3 or switch to classic desktop which is Gnome2 if I recall correctly? I hope I haven't put too much in one question and that it makes sense. Thanks.

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• Friday Tips #5

  - by Chris Kawalek

  Happy Friday, everyone! Following up on yesterday's post about Oracle VM VirtualBox being selected as the best virtualization solution for 2012 by the readers of Linux Journal, our Friday tip is about that very cool piece of software: Question: How do I move a VM from one machine to another with Oracle VM VirtualBox? Answer by Andy Hall, Product Management Director, Oracle Desktop Virtualization: There are a number of ways to do this, with pros and cons for each. The most reliable approach is to Export and Import virtual machines: From the VirtualBox manager, simply use the File…Export appliance menu and follow the wizard's lead. Move the resulting file(s) to the destination machine; and Import the VM into VirtualBox. This method will take longer and use more disk space than other methods because the configuration files and virtual hard drives are converted into an industry standard format (.ova or .ovf). But an advantage of this approach is that the creator of the virtual appliance can add a license which the importer will see and click-to-accept at import time. This is especially useful for ISVs looking to deliver pre-built, configured and tested appliances to their customers and prospects. Thanks Andy! Remember, if you have a question for us, use Twitter hashtag #AskOracleVirtualization. We'll see you next week! -Chris 

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• How could I change the colour of the menu font in Lubuntu?

  - by cipricus

  I use Lubuntu 12.04 and I have become obsessed with the looks of it! There is a type of themes that I especially want to use (flat, light), all related to the Elegant brit theme. On my desktop it looks like: As I want to replace the dominating orange with blue, I would prefer even more the theme Elegant Brit re-Revisited The problem is that both of them have a problem with my system tray, a white background appears: A theme that is almost identical to the orange one, but has no problem with the system tray is called Elegant Blackle. I have tried to use this one and replaced the gtk2 folder in its main folder with the gtk2 folder from Elegant Brit re-Revisited. The result is an improvement for me, as I have eliminated a part of the orange stuff with a decent blue :). The orange now appears only with the gtk3 apps, which is rather amusing. Migrating also the gtk3 folder from the blue to the orange theme would bring the sys tray problem too: it is something related to that gtk3 folder. But this is another matter. Now I have something very close to what I want. But I especially would like to have a feature that was present in the Elegant Blackle theme and now is gone as its gtk2 folder was replaced by that of the blue theme: the black font of the menus, instead of the blueish ones. Could anyone instruct me what is to be changed in the gtk2 folder of the Elegant Brit re-Revisited theme so as to make the menus look like this (like they do in Elegant Blackle with its original gtk2 folder): and not like this? : (on my display this blue is more whitish). An alternative and ideal solution would be knowing how to edit the Elegant Brit re-Revisited theme so as to remove the systray problem or, maybe easier, to edit the orange colour of Elegant Blackle theme to as to be completely replaced by the blue of the other one.

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• Oracle Solaris Remote Lab (OSRL) Fact Sheet

  - by user13333379

  The Oracle Solaris Remote Lab allows independent software vendors (ISVs) to test and qualify their applications in a self service Solaris cloud. ISVs who are Oracle Partner Network Gold members with a specialization in the Solaris knowledge zone can apply for free access in OPN. The lab offers the following features to it's users: Lifetime of project: 45 days (extensions granted on demand)  Up to 5 virtual machines in a private network  Virtual Machine technology: Solaris zones  Resources per VM processor support: SPARC or x86  OS version: OracleSolaris 11.0 4GB physical memory  4GB swap space  10GB local filesystem storage  10GB network filesystem (NFS) mounted on all virtual machines Networking configuration The only external network routes are to Partner's other Virtual Machines  No network routing to the Internet  The SMB (CIFS) sharing protocol is not available between Virtual Machines  Device Access  Applications that assume the existence of /devices will not run in a Virtual Machine  Applications that use eeprom to modify SPARC eeprom setting will not run in a Virtual Machine The following utilities do not work properly in Virtual Machines:  add_drv, disks, prtconf, prtdiag, rem_dev Access technology: Secure Global Desktop, file up and download root access within VM Available VM templates (both processor architectures) Oracle Database 11g Release 2 (11.2.0.3) for Solaris with Oracle Enterprise Manager 11g Weblogic 12c  SAMP: Apache http server, PHP, MySQL, phpadmin on all templates and images: Oracle Solaris Studio 12.3 for application development  More resources: Online application for Oracle Solaris remote Lab Developer Webinar about the Oracle Solaris Remote Lab Everything an Oracle Solaris Developer needs...

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• Problem Installing Ubuntu 12.04 - [Errno 5]

  - by Rob Barker

  I'm trying to intall Ubuntu 12.04 to my brand new eBay purchased hard drive. Only got the drive today and already it's causing me problems. The seller is a proper proffesional company with 99.9% positive feedback, so it seems unlikely they would have sold me something rubbish. My old hard drive packed up last Tuesday and so i bought a new one to replace it. Because this was an entirely new drive i decided to install Ubuntu as there was no current operating system. My computer is an eMachines EM250 netbook. There's no disc drive so i am installing from a USB stick. The new operating system loads beautifully, and the desktop appears just as it should. When i click install i am taken to the installer which copies the files to about 35% and then displays this: [Errno 5] Input/output error This is often due to a faulty CD/DVD disk or drive, or a faulty hard disk. It may help to clean the CD/DVD, to burn the CD/DVD at a lower speed, to clean the CD/DVD drive lens (cleaning kits are often available from electronics suppliers), to check whether the hard disk is old and in need of replacement, or to move the system to a cooler environment. The hard drive can be heard constantly crackling. When i booted Ubuntu 12.04 from my old faulty hard drive as a test, i didn't even make it past the purple Ubuntu screen, so it can't be that bad. Any ideas? Message to the moderators. Please do not close this thread. I'm well aware there may be other threads on this, but i don't want it closing as the others do not provide the answer i am looking for. Thank you.

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• Oracle Solaris Remote Lab (OSRL) Fact Sheet

  - by user13333379

  The Oracle Solaris Remote Lab allows independent software vendors (ISVs) to test and qualify their applications in a self service Solaris cloud. ISVs who are Oracle Partner Network Gold members with a specialization in the Solaris knowledge zone can apply for free access in OPN. The lab offers the following features to it's users: Lifetime of project: 45 days (extensions granted on demand)  Up to 5 virtual machines in a private network  Virtual Machine technology: Solaris zones  Resources per VM processor support: SPARC or x86  OS version: OracleSolaris 11.0 4GB physical memory  4GB swap space  10GB local filesystem storage  10GB network filesystem (NFS) mounted on all virtual machines Networking configuration The only external network routes are to Partner's other Virtual Machines  No network routing to the Internet  The SMB (CIFS) sharing protocol is not available between Virtual Machines  Device Access  Applications that assume the existence of /devices will not run in a Virtual Machine  Applications that use eeprom to modify SPARC eeprom setting will not run in a Virtual Machine The following utilities do not work properly in Virtual Machines:  add_drv, disks, prtconf, prtdiag, rem_dev Access technology: Secure Global Desktop, file up and download root access within VM Available VM templates (both processor architectures) Oracle Database 11g Release 2 (11.2.0.3) for Solaris with Oracle Enterprise Manager 11g Weblogic 12c  SAMP: Apache http server, PHP, MySQL, phpadmin on all templates and images: Oracle Solaris Studio 12.3 for application development  More resources: Online application for Oracle Solaris remote Lab Developer Webinar about the Oracle Solaris Remote Lab Everything an Oracle Solaris Developer needs...

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• JavaOne India Early Bird Discount Ends April 2nd

  - by Tori Wieldt

  JavaOne India3-4 May, 2012Hyderabad International Convention Centre Register Now and Save – For A Limited Time!If you register by 2 April, you'll save INR 1080 on this premier Java technology conference. JavaOne will return for the second straight year to India May 3, 4 at the Hyderabad Convention Center. This year's line up will once again bring some of the leading experts in from all over the world as well as local Indian content. Sharat Chander (Director - Java Technology Outreach) said, "JavaOne is the premier Java technology conference in the world, for developers by developers.  Every year we keep increasing community participation in both the content selection and content delivery, and this year we expect even more."The JavaOne India tracks are:Client-Side Technologies and Rich User ExperiencesLearn about developments in Java for the desktop and practices for building rich, immersive, and powerful user experiences across multiple hardware platforms and form factors. Core Java PlatformDiscover the latest innovations in Java virtual machines. Get deep technical explanations in security and networking and enhancements that allow dynamic programming languages to drive Java platform adoption. Java EE Web Profile, Platform Technologies, Web Services, and the Cloud Update your knowledge on topics such as Web application development, persistence, security, and transactions. This track will also address modularity, enterprise caching, Web sockets, and internet identity. Mobile, Java Card, Embedded, and DevicesThis track is devoted to Java technology as the ultimate platform for mobile computing. It also covers embedded and device usages of Java technologies, including Java SE, Java ME, Java Card, and JavaFX. Share this event: #javaoneIndia

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• Mapping XFCE4/xRDP sessions to users

  - by garrilla

  I have Ubuntu 13.10 with Xubuntu Desktop - XFCE4. I'm trying to use XDRP to allow MS Windows users to login to the machine with their own user. I've been a lot around the houses with this! I've find two half-way solutions, but can't get them to work as I'd like... 1) in /etc/xrdp/xrdp.ini I set the port to -1 [xrdp1] name=sesman-Xvnc lib=libvnc.so username=ask password=ask ip=127.0.0.1 port=-1 each time any user logs on they get a new session - they can never go back to their original session 2) in /etc/xrdp/xrdp.ini I set the port to 5912 (e.g) [xrdp1] name=sesman-Xvnc lib=libvnc.so username=ask password=ask ip=127.0.0.1 port=5912 each time any user logs on they always log on to the same session irrespective of their logon details ??) I found a mid-way solution, to create a lot of sessions by adding adding additional options in the xrdp.ini e.g. [xrdp8] name=Bob's Logon lib=libvnc.so username=ask password=ask ip=127.0.0.1 port=5913 [xrdp9] name=Jill's Logon lib=libvnc.so username=ask password=ask ip=127.0.0.1 port=5914 and so on, but he problem with this is that Jill can still log into Bob's remote session ??? Is it possible to to do what I'm trying to do? Maybe I have to use different tools?

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• Java Applet or Unity3D for Cross-Platform 3D Surveying App

  - by Jake M

  Do you think a Java Applet or Unity3D Application is the best option to make a cross-browser 3d web-app? I intend to make a web application that displays 3d environments that can be navigated by dragging(with a finger or mouse depending on the platform). The web app will render 3d environments of development sites including contours, water pipeline locations, buildings etc. The application must work on Windows Desktop, Android, iOS and Windows Phone. So this is why I am tending towards a web-app as opposed to cross-platform smart phone library(like Mosync or Marmalade). The 3d environments will be navigable(by dragging around) and contain simple(not detailed) 3d objects like buildings, mountains, pipelines, etc. One thing I know is that WebGL is out because it doesn't work on IE and has limited support on Smart Phones(am I correct to completely disregard WebGL?). Will future Smart Phone browsers continue to support Java Applets? Also is it really true I can write ONE Application/Game in Unity3D and simply compile it to run on Windows Windows, Mac, Xbox 360, PlayStation 3, Wii, iPad, iPhone and Android? Would you suggest the Unity3D application path or the Unity3D Web Player path? Concerning Unity3D, there's one thing I am unsure about: do all Unity3D features work on iOS and Android?

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