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  • Do I need "cube subclasses" to represent the blocks in a Minecraft-like world?

    - by stighy
    I would like to try to develop a very simple game like Minecraft for my own education. My main problem at the moment is figuring out how to model classes that represent the world, which will be made of blocks of various types (such as dirt, stone and sand). I am thinking of creating the following class structure: Cube (with proprerties like color, strength, flammable, gravity) with subclasses: Dirt Stone Sand et cetera My question is, do I need the Cube subclasses or a single class Cube sufficient?

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  • Grub errors dual boot Windows 8 / Ubuntu 12.10

    - by luca-mastro
    I have got a newly bought ASUS N56V with Windows 8 preinstalled. I needed to install Ubuntu so i partitioned the disk and after having disabled the Secure Boot option from Windows 8 i successfully installed Ubuntu 12.10 from a Live USB. The problem is that if i try to access both to Windows 8 (loader) and Windows Recovery System (loader) from the grub menu, these tow errors show: "can't find command 'drivemap' " and "invalid EFI file path" and it goes back to the grub menu. In conclusion I do not have access to my Windows 8 partition but can only use Ubuntu. How can I solve the problem? I am pretty new to the matter. Thank you!

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  • DOM Snitch : une extension de Google Chrome pour traquer les failles du code JavaScript, par détection heuristique

    DOM Snitch : une extension open source de Google Chrome pour traquer les failles Du code JavaScript par détection heuristique « DOM Snitch » est une nouvelle extension open source pour Chrome, destinée à aider les développeurs, testeurs et chercheurs en sécurité à débusquer les failles du code client des sites et applications Web. Cette extension développée par Google permet comme son nom l'indique, de suivre en temps réel l'évolution du DOM des pages Web (Document Object Model), sous l'action des différents scripts qui s'y exécutent. La fonctionnalité clé et le principal intérêt de Snitch résident dans ses capacités avancées de détection heuristique des failles, qu...

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  • Subwoofer doesn't work on Dell Inspiron 17R after upgrade to 13.10

    - by Danil Lopatin
    After upgrading from 13.04 to 13.10 Dell's Inspirion 17R subwoofer stoped working. In Ubuntu 13.04 was workaround by adding in the file /etc/modprobe.d/alsa-base.conf next line: options snd-hda-intel model=ref This issue was discussed here: How to activate subwoofer in Inspiron 17r? After update previous workarounds don't help and I get no sound from any speaker in this case. Is there some other fix for the latest version?

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  • How to render 3D models as SVG vector graphics? (planar projection)

    - by Jan
    This image (original SVG from Wikipedia, public domain) was created using the following procedure: Create a 3D model in Google sketchup Export as PDF Import in Inkscape Save as SVG Is there a straightforward way to produce such a SVG with software that runs (natively) on Ubuntu? (Pantograph, a Blender plugin, has only broken download links; VRM, another Blender plugin works with Belnder 2.4x, but not with Blender 2.6x.)

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  • Are UML class diagrams adequate to design javascript systems?

    - by Vandell
    Given that UML is oriented towards a more classic approach to object orientation, is it still usable in a reliable way to design javascript systems? One specific problem that I can see is that class diagrams are, in fact, a structural view of the system, and javascript is more behaviour driven, how can you deal with it? Please, keep in mind that I'm not talking abot the real world domain here, It's a model for the solution that I'm trying to achieve.

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  • Ubuntu 12.04 Sound only comes in Headphones doesn't come in Inbuilt Speakers - HP Pavilion dv6 1280us

    - by linuxfreak12
    I am newbie of Ubuntu 12.04 with Gnome3 Shell. Laptop Model: HP Pavilion DV6 1280US Full Updates Installed. I can hear sound played only when headphones are plugged in. Regular inbuilt speakers doesn't work. Speakers are fine, it should be some technical configuration/driver issue with OS. They work in the Windows OS in the same laptop. Kindly check these two snapshots: Ubuntu Geeks Kindly help me!

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  • Grub2 with BURG: duplicate Windows entries, how do I remove one?

    - by Tomas Lycken
    I have a dual boot system with Ubuntu 12.04 and Windows 7, using GRUB2 (with Burg) as boot loader. For some reason, the Windows installation shows up twice in the boot menu: Ubuntu GNU/Linux, with Linux 3.2.0-24-generic Ubuntu GNU/Linux, with Linux 3.2.0-24-generic (recovery mode) Windows 7 (loader) (on /dev/sda1) Windows 7 (loader) (on /dev/sda2) If I look in my partition table, /dev/sda2 is C:\ of the Windows installation, and /dev/sda1 is the "System Reserved" partition (which, IIRC, is Windows' own bootloader). Furthermore, gparted shows /dev/sda2 - but no other partitions - with a boot flag: What is going on here? I'd like to have only the entries for Ubuntu and one entry for Windows in my boot menu - how do I remove one of them?

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  • assistance recovering/reinstalling/installing ubuntu and win7

    - by razzrat
    New computer with Windows 7 installed, I defrag, shrink, re-boot from Ubuntu LiveUSB, go to gparted and look at partitions before installing Ubuntu....for some reason Win7 is still taking up 400G of my HD! I resized partition down with gparted, exit and yes of course I can't boot into Windows. When I go to install Ubuntu in new large unallocated space I get a blank screen at the point you are asked what kind of installation you want. I have Ubuntu 12.04 LiveUSB, Windows 7 re-installation disk and driver disks also. The HDD currently has 3 allocated partitions: 'diag' fat16, 'recovery' ntfs and 'OS' ntfs which has a red '!' next to it.

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  • Windows 7 doesnt boot after installing Ubuntu 12.10 (Asus Zenbook Prime / UEFI problem)

    - by jpdus
    Today I installed Ubuntu and since then i cannot boot into Windows anymore. I used the "standard" option (didnt change any partitions manually, just entered the size) but used the UEFI-mode. At first the GRUB entries for Windows did not work at all, after reading this thead i was able to add a new Grub entry - now i can get into the "windows-loading" screen for a few seconds but then i always see some kind of bluescreen for a fraction of a second and the laptop reboots. I can get into the windows recovery partition but the only option there is to reset everything to factory settings (+erase all data). I have no idea how to get into the Windows 7 repair mode which was mentioned here (tried everything else in this thread too - no success). My boot info can be found here: http://paste.ubuntu.com/1411573/ I have no idea what went wrong (there is even an extra page for the Zenbook Prime where no installation problems are mentioned). I would appreciate any help/ideas, many thanks!

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  • Sync ERROR!! LOST MY WORK!

    - by Pedro Pisandelli
    Sorry my English... hope you understand me... I had a document. Edited it yesterday. But today, when i open it, it was desync. It show an one month earlier version!! I LOST A LOT OF WORK!! And i can't recover my right version of the document! I have a paid plan for Ubuntu One, but this made me very angry. And i don't see a way to recover and don't see a way to talk to somebody! There's no recovery mode like Dropbox... Man, i'm really ANGRY!! REALLY! I'll not recomend Ubuntu One services anymore! I don't know what to do... I lost my work and now i'm one month late! Thanks!!!

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  • EntityDataSource Control Basics

    The Entity Framework can be easily used to create websites based on ASP.NET. The EntityDataSource control, which is one of a set of Web Server Datasource controls, can be used to to bind an Entity Data Model (EDM) to data-bound controls on the page. Thse controls can be editable grids, forms, drop-down list controls and master-detail pages which can then be used to create, read, update, and delete data. Joydip tells you what you need to get started.

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  • mail server crash

    - by waxx
    i have a mail server running ubuntu 12.04. my server has a main 200gb hdd as the /, and other scsi hdd. as far as i recall, i used the 5 scsi harddrives for different mount points.. 1 hard drive is /swap, 1 hard drive is /usr ...the other is /boot, i cant recall the other 2.. just yesterday, my /usr drive died... and it wont let me boot into the server.. ive tried to skip mounting the /usr with the S option when i go to recovery drive, but the server still wont boot up. i need help badly because the server needs to be up and running ASAP. thank you for all the help.

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  • Touch pad 2 finger scroll not working

    - by user31984
    I purchased a new Samsung Series 7 laptop, Model: 700Z5B to be exact. I have everything working great using Ubuntu 11.10, the only issue is that the 2 finger scroll on the track pad does not work. Does anyone have any pointers for what I need to do to configure it. I've looked around on the forums and have not found anything that has worked yet. I don't even see the trackpad options under the mouse and touchpad settings area.

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  • purple screen when booting on lenovo G505s

    - by user1114795
    I successfully installed Ubuntu 14.04. I'm having the purple screen issue however even after making the nomodeset changes. It remains stuck on a purple screen. I can navigate through the menu options i.e Ubuntu, Advanced Options for Ubuntu, Memory Test, Windows Recovery Environment and Windows 8. I can't even boot into Windows 8. I'm totally new to this. If someone could please provide step by step instructions, that would be most appreciated.

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  • Grub won't boot windows after update from 11.10 to 12.04

    - by Holger
    thanks for your time and reading this, here's the deal: i upgraded from 11.10 to 12.04 and everything worked out until i rebooted, i had 11.10 sucessfully running as a dual boot with windows vista. when i rebooted, my GRUB was shot to hell, what ever option i selected it said partion not found or something similar... booting into a live version on a thumb drive and running bootrepair from there fixed the issue... but only for ubuntu, when i try to boot into windows it only goes back to GRUB. i'm not at home, and heres a list of what i have here with me... 1 4gb thumb drive, empty 1 8gb thumb drive, windows vista installer bootable 1 old laptop, the one i try to save, optical drive is not existent 2 Mbps internet connection can you help me get back into my windows without having to reinstall windows? or at least show me a way how to use my illustrator through a virtual machine or something? here's my grub cfg # # DO NOT EDIT THIS FILE # # It is automatically generated by grub-mkconfig using templates # from /etc/grub.d and settings from /etc/default/grub # ### BEGIN /etc/grub.d/00_header ### if [ -s $prefix/grubenv ]; then set have_grubenv=true load_env fi set default="0" if [ "${prev_saved_entry}" ]; then set saved_entry="${prev_saved_entry}" save_env saved_entry set prev_saved_entry= save_env prev_saved_entry set boot_once=true fi function savedefault { if [ -z "${boot_once}" ]; then saved_entry="${chosen}" save_env saved_entry fi } function recordfail { set recordfail=1 if [ -n "${have_grubenv}" ]; then if [ -z "${boot_once}" ]; then save_env recordfail; fi; fi } function load_video { insmod vbe insmod vga insmod video_bochs insmod video_cirrus } insmod part_msdos insmod ext2 set root='(hd0,msdos2)' search --no-floppy --fs-uuid --set=root 1063e402-b14f-45e5-92b6-d20a2e3a717e if loadfont /usr/share/grub/unicode.pf2 ; then set gfxmode=auto load_video insmod gfxterm insmod part_msdos insmod ext2 set root='(hd0,msdos2)' search --no-floppy --fs-uuid --set=root 1063e402-b14f-45e5-92b6-d20a2e3a717e set locale_dir=($root)/boot/grub/locale set lang=de_DE insmod gettext fi terminal_output gfxterm if [ "${recordfail}" = 1 ]; then set timeout=-1 else set timeout=10 fi ### END /etc/grub.d/00_header ### ### BEGIN /etc/grub.d/05_debian_theme ### set menu_color_normal=white/black set menu_color_highlight=black/light-gray if background_color 44,0,30; then clear fi ### END /etc/grub.d/05_debian_theme ### ### BEGIN /etc/grub.d/10_linux ### function gfxmode { set gfxpayload="${1}" if [ "${1}" = "keep" ]; then set vt_handoff=vt.handoff=7 else set vt_handoff= fi } if [ "${recordfail}" != 1 ]; then if [ -e ${prefix}/gfxblacklist.txt ]; then if hwmatch ${prefix}/gfxblacklist.txt 3; then if [ ${match} = 0 ]; then set linux_gfx_mode=keep else set linux_gfx_mode=text fi else set linux_gfx_mode=text fi else set linux_gfx_mode=keep fi else set linux_gfx_mode=text fi export linux_gfx_mode if [ "${linux_gfx_mode}" != "text" ]; then load_video; fi menuentry 'Ubuntu, mit Linux 3.2.0-24-generic' --class ubuntu --class gnu-linux --class gnu --class os { recordfail gfxmode $linux_gfx_mode insmod gzio insmod part_msdos insmod ext2 set root='(hd0,msdos2)' search --no-floppy --fs-uuid --set=root 1063e402-b14f-45e5-92b6-d20a2e3a717e linux /boot/vmlinuz-3.2.0-24-generic root=UUID=1063e402-b14f-45e5-92b6-d20a2e3a717e ro quiet splash $vt_handoff initrd /boot/initrd.img-3.2.0-24-generic } menuentry 'Ubuntu, mit Linux 3.2.0-24-generic (Wiederherstellungsmodus)' --class ubuntu --class gnu-linux --class gnu --class os { recordfail insmod gzio insmod part_msdos insmod ext2 set root='(hd0,msdos2)' search --no-floppy --fs-uuid --set=root 1063e402-b14f-45e5-92b6-d20a2e3a717e echo 'Linux 3.2.0-24-generic wird geladen …' linux /boot/vmlinuz-3.2.0-24-generic root=UUID=1063e402-b14f-45e5-92b6-d20a2e3a717e ro recovery nomodeset echo 'Initiale Ramdisk wird geladen …' initrd /boot/initrd.img-3.2.0-24-generic } submenu "Previous Linux versions" { menuentry 'Ubuntu, mit Linux 3.0.0-19-generic' --class ubuntu --class gnu-linux --class gnu --class os { recordfail gfxmode $linux_gfx_mode insmod gzio insmod part_msdos insmod ext2 set root='(hd0,msdos2)' search --no-floppy --fs-uuid --set=root 1063e402-b14f-45e5-92b6-d20a2e3a717e linux /boot/vmlinuz-3.0.0-19-generic root=UUID=1063e402-b14f-45e5-92b6-d20a2e3a717e ro quiet splash $vt_handoff initrd /boot/initrd.img-3.0.0-19-generic } menuentry 'Ubuntu, mit Linux 3.0.0-19-generic (Wiederherstellungsmodus)' --class ubuntu --class gnu-linux --class gnu --class os { recordfail insmod gzio insmod part_msdos insmod ext2 set root='(hd0,msdos2)' search --no-floppy --fs-uuid --set=root 1063e402-b14f-45e5-92b6-d20a2e3a717e echo 'Linux 3.0.0-19-generic wird geladen …' linux /boot/vmlinuz-3.0.0-19-generic root=UUID=1063e402-b14f-45e5-92b6-d20a2e3a717e ro recovery nomodeset echo 'Initiale Ramdisk wird geladen …' initrd /boot/initrd.img-3.0.0-19-generic } } ### END /etc/grub.d/10_linux ### ### BEGIN /etc/grub.d/20_linux_xen ### ### END /etc/grub.d/20_linux_xen ### ### BEGIN /etc/grub.d/20_memtest86+ ### menuentry "Memory test (memtest86+)" { insmod part_msdos insmod ext2 set root='(hd0,msdos2)' search --no-floppy --fs-uuid --set=root 1063e402-b14f-45e5-92b6-d20a2e3a717e linux16 /boot/memtest86+.bin } menuentry "Memory test (memtest86+, serial console 115200)" { insmod part_msdos insmod ext2 set root='(hd0,msdos2)' search --no-floppy --fs-uuid --set=root 1063e402-b14f-45e5-92b6-d20a2e3a717e linux16 /boot/memtest86+.bin console=ttyS0,115200n8 } ### END /etc/grub.d/20_memtest86+ ### ### BEGIN /etc/grub.d/30_os-prober ### menuentry "Windows Vista (loader) (on /dev/sda1)" --class windows --class os { insmod part_msdos insmod ntfs set root='(hd0,msdos1)' search --no-floppy --fs-uuid --set=root 2C9E66B39E6674EC chainloader +1 } ### END /etc/grub.d/30_os-prober ### ### BEGIN /etc/grub.d/40_custom ### # This file provides an easy way to add custom menu entries. Simply type the # menu entries you want to add after this comment. Be careful not to change # the 'exec tail' line above. ### END /etc/grub.d/40_custom ### ### BEGIN /etc/grub.d/41_custom ### if [ -f $prefix/custom.cfg ]; then source $prefix/custom.cfg; fi ### END /etc/grub.d/41_custom ###

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  • after upgrade from 10.04 to 10.10, no keyboard, cannot login

    - by avar
    Hello, just did upgrade from kubuntu 10.04 to 10.10.. after all done and reboot, when the login box shows up, my keyboard and laptop pad ( mouse ) dosn't work, (plugged in the usb mouse, it works sometimes) but never keyboard. i went to recovery , the boot hung up when it says : [ 17.704053] EXT4-fs (sda9): mounted filesystem with ordered data mode Begin: Running /scripts/local-bottom ... Done. Done. Begin: Running /scripts/init-bottom ... Done. stuck here. nothing works except ctrl+alt+del i tried booting from livecd and update-grub, also tried booting manually from grub command line, everytime it stuck at lines above .. so it's not grub problem . how to solve this ? if it is important, i have ATI mobility radeon HD 5470 card .

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  • self referencing tables, good or bad?

    - by NimChimpsky
    Representing geographical locations within an application, the design of the underlying data model suggests two clear options (or maybe more?). One table with a self referencing parent_id column uk - london (london parent id = UK id) or two tables, with a one to many relationship using a foreign key. My preference is for one self-refercing table as it easily allows to extend into as many sub regions as required. IN general do people veer away from self referencing tables, or are they A-OK ?

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  • Unable to Restore Nexus 7 2013

    - by belkinsa
    I have a Nexus 7 2013 with FLO-04.01 bootloader and I tired ./flash-all.sh and it fails. Happens every time. Output below: svetlana@svetlana-TECRA-M5:~/Downloads/razor-krt16s$ sudo ./flash-all.sh [sudo] password for svetlana: < waiting for device > sending 'bootloader' (3911 KB)... OKAY [ 0.163s] writing 'bootloader'... OKAY [ 1.446s] finished. total time: 1.609s rebooting into bootloader... OKAY [ 0.006s] finished. total time: 0.006s archive does not contain 'boot.sig' archive does not contain 'recovery.sig' failed to allocate 721539744 bytes error: update package missing system.img svetlana@svetlana-TECRA-M5:~/Downloads/razor-krt16s$

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  • KVM, QEMU, and kernel project management

    <b>LWN.net:</b> "Both the code and its development model are seen as conforming much more closely to the Linux way of doing things than the alternatives; KVM is expected to be the long-term virtualization solution for Linux. So, one might well wonder, why has KVM been the topic of one of the more massive and less pleasant linux-kernel discussions in some time?"

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  • APress Deal of the Day 2/August/2014 - Pro ASP.NET MVC 5

    - by TATWORTH
    Originally posted on: http://geekswithblogs.net/TATWORTH/archive/2014/08/02/apress-deal-of-the-day-2august2014---pro-asp.net-mvc.aspxToday’s $10 Deal of the Day from APress at http://www.apress.com/9781430265290 is Pro ASP.NET MVC 5. “The ASP.NET MVC 5 Framework is the latest evolution of Microsoft’s ASP.NET web platform. It provides a high-productivity programming model that promotes cleaner code architecture, test-driven development, and powerful extensibility, combined with all the benefits of ASP.NET.”

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  • The DBA Team tackles data corruption

    Paul Randal joins the team in this instalment of the DBA Team saga. In this episode, Monte Bank is trying to cover up insider trading - using data corruption to eliminate the evidence, and a patsy DBA to take the blame. It's a great story with useful advice on how to perform thorough data recovery tasks. "A real time saver" Andy Doyle, Head of IT ServicesAndy and his team saved time by automating backup and restores with SQL Backup Pro. Find out how much time you could save. Download a free trial now.

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  • BonaVista Dimensions used as a report service

    - by Marco Russo (SQLBI)
    Recently I have seen a long demo of BonaVista Dimensions . It is a product that is able to create reports and, most important dashboards. You can use it also without SQL Server and Analysis Services, just by importing data in a local cube file that you can model using its own simple to use user interface. But what is interesting to me (in this post) is the capability to connect to a SSAS cube. It is somewhat similar to XLCubed and in reality these two products have something in common, because both...(read more)

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  • Ghosting Program for Ubuntu 12.10

    - by Sean Webber
    I am looking to figure out how to set up a mass backup system for a computer network (of about 25) and am looking for a ghosting program that makes an image of the entire system for backup/recovery purposes. While clonezilla would work.. you have to manually boot us the CD for it. I am looking for a program that runs INSIDE Ubuntu that sends a system image backup off to the network server at set times, then when needed could also be used to burn the clone back to the machine. Another words- automatically and the only time I have to do anything to it is when I need to burn a backup BACK to a 'crapped' machine. Any ideas?

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  • Webcast: Maximum Availability with Oracle GoldenGate

    - by Markus Weber
    Make sure to register here for this upcoming live webcast, with great speakers, and a live Q&A chat session.It is scheduled for Thursday, December 13th, 2012, at 10am Pacific Time. There are no doubts about the strength, and depth, of Oracle's offerings for highly available database environments. But depending on the nature of your data center environments, your different uses cases and workloads, your service level agreements and expectations, there might still be some open questions about what the best solutions and architectures are to assure high availability and/or affordable, efficient disaster recovery. Therefore, this webcast will answer questions such as: How does Oracle GoldenGate fit into Oracle's Maximum Availability Architecture ? When to use Oracle Active Data Guard ? When Oracle GoldenGate ? When both ? When Oracle GoldenGate is a definite requirement for Database High Availability ? Overall, what are new high availability features in Oracle GoldenGate 11g Release 2 ? 

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