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• How do I re-enable the backlight?

  - by Scott Severance

  Since Oneiric, if I leave my machine (HP Mini 110 netbook) unattended and it goes into power-save mode, the backlight gets disabled. How can I turn it back on? Note that the keyboard backlight controls (Fn+F4 and Fn+F3) don't have any effect in this situation. I've already filed a bug, but filing a bug doesn't fix my problem. I tried this workaround posted in this bug report dealing with Acer laptops: sudo setpci -s 00:02.0 F4.B=0 However, if anything, that command makes things worse. In the general case, I can see a little bit if I'm in a dark room with a flashlight aimed just so. But after running setpci I can't see anything. And I find the setpci documentation to be utterly incomprehensible, so I don't know whether I need to tweak my command somehow or whether I'm completely barking up the wrong tree. Update: I've found a workaround: I'm now booting with the kernel parameter acpi=off. This disables power management, which prevents the machine from going into power saving mode and thus failing to come back up correctly. Of course, not having power management means that I can't use suspend or do anything to manage power other than powering it off (even then, I have to manually use the power switch). Also, it prevents me from using Unity 3D or Gnome Shell, forcing me into Unity 2C or Gnome Classic. So, I'd really like to be able to stop using this hack.

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• Correct way to handle path-finding collision matrix

  - by Xander Lamkins

  Here is an example of me utilizing path finding. The red grid represents the grid utilized by my A* library to locate a distance. This picture is only an example, currently it is all calculated on the 1x1 pixel level (pretty darn laggy). I want to make it so that the farther I click, the less accurate it will be (split the map into larger grid pieces). Edit: as mentioned by Eric, this is not a required game mechanic. I am perfectly fine with any method that allows me to make this accurate while still fast. This isn't the really the topic of this question though. The problem I have is, my current library uses a two dimensional grid of integers. The higher the number in a cell, the more resistance for that grid tile. Currently I'm setting all unwalkable spots to Integer Max. Here is an example of what I want: I'm just not sure how I should set up the arrays of integers of the grid. Every time an element is added/removed to/from the game, it's collision details are updated in the table. Here is a picture of what the map looks like on my collision layer: I probably shouldn't be creating new arrays every time I have to do a path find because my game needs to support tons of PF at the same time. Should I have multiple arrays that are all updated when the dynamic elements are updated (a building is built/a building is destroyed). The problem I see with this is that it will probably make the creation and destruction of buildings a little more laggy than I would want because it would be setting the collision grid for each built in accuracy level. I would also have to add more/remove some arrays if I ever in the future changed the map size. Should I generate the new array based on an accuracy value every time I need to PF? The problem I see with this is that it will probably make any form of PF just as laggy because it will have to search through a MapWidth x MapHeight number of cells to shrink it all down. Or is there a better way? I'm certainly not the best at optimizing really anything. I've just started dealing with XNA so I'm not used to having optimization code really doing much of an affect until now... :( If you need code examples, please ask. I'll add it as an edit. EDIT: While this doesn't directly relate to the question, I figure the more information I provide, the better. To keep your units from moving as accurately to the players desired position, I've decided that once the unit PFs over to the less accurate grid piece, it will then PF on a more accurate level to the exact position requested.

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• What's the correct MAAS DHCP configuration?

  - by k to the z

  I've set up a MAAS controller by following this documentation: http://maas.ubuntu.com/docs1.4/cluster-configuration.html However, when I got to the DHCP configurations I was a little puzzled. The controller I created is at 172.16.142.61. It looks like that's the address for the "IP" text field. Going down the rest of the list I'm unsure of though. Should I just put in the subnet/broadcast/router (is that the gateway?) that the MAAS server resides in or am I suppost to just list the static address of the MAAS server and then define my own "virtual" subnet in the fields below?

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• Can't enable wifi on vaio CW ubuntu 12.04

  - by rastemoh

  I was using my wifi with no problem, but an hour ago I switched it off from system settings and then tried to turn it on again, but no success. it's about 1 month I am using it and I had no problem with WIFI except this one. I rebooted and went to windows 7, but even that OS can't turn it on!! this is rfkill list all: 0: sony-wifi: Wireless LAN Soft blocked: yes Hard blocked: yes 1: sony-bluetooth: Bluetooth Soft blocked: yes Hard blocked: yes 2: phy0: Wireless LAN Soft blocked: yes Hard blocked: yes

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• How to enable bluetooth when there is no hardware switch

  - by Robert Mutke

  My laptop Thinkpad Edge e320 got out of standby with bluetooth and wireless disabled. WiFi got enabled normally in unity but bluetooth says that "bluetooth is disabled by hardware switch". There is no hw switch on my laptop. I tried: # echo 1 > /sys/devices/platform/thinkpad_acpi/bluetooth_enable bash: echo: write error: Operation not permitted but as you see no results. Fn-F9, which is radio control, does not work. Any help?

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• Geforce GT240M: How to disable Notebook screen and enable external Monitor

  - by bdr529

  When i attach my Notebook (Nvidia Geforce GT 240M) to my Panasonic-TV via HDMI, both screens are activated. I use Nvidia-Driver Version 260.19.06. I wonder how to deactivate my notebook display automatically or with one Script and switch to the external Monitor when attached. The TV needs an overscan-correction of 100px to display the whole screen. I also want to close the notebook without deactivating the external monitor, what still happens now. Is this possible?

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• Correct nvidia+intel graphics setup in 14.04

  - by Espressofa

  Just upgraded to 14.04 to try to fix some other issues. Now, something has gone wrong with my graphics. I have a Thinkpad T530 with Intel and Nvidia graphics cards. $ inxi -SGx System: Host: xyz Kernel: 3.13.0-24-generic x86_64 (64 bit, gcc: 4.8.2) Desktop: N/A Distro: Ubuntu 14.04 trusty Graphics: Card-1: Intel 3rd Gen Core processor Graphics Controller bus-ID: 00:02.0 Card-2: NVIDIA GF108M [NVS 5400M] bus-ID: 01:00.0 X.Org: 1.15.1 drivers: fbdev,vesa,intel,nouveau (unloaded: nvidia) Resolution: [email protected] GLX Renderer: N/A GLX Version: N/A Direct Rendering: N/A $ glxinfo name of display: :0 Xlib: extension "GLX" missing on display ":0". Xlib: extension "GLX" missing on display ":0". Xlib: extension "GLX" missing on display ":0". Xlib: extension "GLX" missing on display ":0". Xlib: extension "GLX" missing on display ":0". Error: couldn't find RGB GLX visual or fbconfig Xlib: extension "GLX" missing on display ":0". Xlib: extension "GLX" missing on display ":0". Xlib: extension "GLX" missing on display ":0". Xlib: extension "GLX" missing on display ":0". Error: couldn't find RGB GLX visual or fbconfig Xlib: extension "GLX" missing on display ":0". Xlib: extension "GLX" missing on display ":0". Xlib: extension "GLX" missing on display ":0". Xlib: extension "GLX" missing on display ":0". Xlib: extension "GLX" missing on display ":0". I'm not sure what I did but now something is wrong with my graphics, as should be visible from the above commands. nvidia-detector says "none" as well. I used to have bumblebee but then some website said to remove it and now something's clearly wrong. What's the right way to set things up? Should I try to add bumblebee back? Here's what's installed now: $ dpkg --get-selections | grep nvidia nvidia-319 install nvidia-331 install nvidia-libopencl1-331 install nvidia-opencl-icd-331 install nvidia-prime install nvidia-settings install nvidia-settings-319 install

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• A sample Memento pattern: Is it correct?

  - by TheSilverBullet

  Following this query on memento pattern, I have tried to put my understanding to test. Memento pattern stands for three things: Saving state of the "memento" object for its successful retrieval Saving carefully each valid "state" of the memento Encapsulating the saved states from the change inducer so that each state remains unaltered Have I achieved these three with my design? Problem This is a zero player game where the program is initialized with a particular set up of chess pawns - the knight and queen. Then program then needs to keep adding set of pawns or knights and queens so that each pawn is "safe" for the next one move of every other pawn. The condition is that either both pawns should be placed, or none of them should be placed. The chessboard with the most number of non conflicting knights and queens should be returned. Implementation I have 4 classes for this: protected ChessBoard (the Memento) private int [][] ChessBoard; public void ChessBoard(); protected void SetChessBoard(); protected void GetChessBoard(int); public Pawn This is not related to memento. It holds info about the pawns public enum PawnType: int { Empty = 0, Queen = 1, Knight = 2, } //This returns a value that shown if the pawn can be placed safely public bool IsSafeToAddPawn(PawnType); public CareTaker This corresponds to caretaker of memento This is a double dimentional integer array that keeps a track of all states. The reason for having 2D array is to keep track of how many states are stored and which state is currently active. An example: 0 -2 1 -1 2 0 - This is current state. With second index 0/ 3 1 - This state has been saved, but has been undone private int [][]State; private ChessBoard [] MChessBoard; //This gets the chessboard at the position requested and assigns it to originator public ChessBoard GetChessBoard(int); //This overwrites the chessboard at given position public void SetChessBoard(ChessBoard, int); private int [][]State; public PlayGame (This is the originator) private bool status; private ChessBoard oChessBoard; //This sets the state of chessboard at position specified public SetChessBoard(ChessBoard, int); //This gets the state of chessboard at position specified public ChessBoard GetChessBoard(int); //This function tries to place both the pawns and returns the status of this attempt public bool PlacePawns(Pawn);

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• the correct way to deal with gtk_events_pending and gtk_main_iteration

  - by abd alsalam

  I have program that send files and i want to make a progress bar for it, but that progress bar just updated after the transferring complete,so i putted a gtk_events_pending() and gtk_main_iteration() functions in the sending loop to go back to the gtk main loop to update the progress bar but also it seems to not work here is a EDIT: the send function is in a separated thread snippet from my code float Percent = 0.0 ; float Interval = 0.0 ; the sending function gint SendTheFile ( ) { char FileBlockBuffer[512]; bzero(FileBlockBuffer, 512); int FileBlockSize ; FILE * FilePointer ; int filesize = 0 ; FilePointer = fopen(LocalFileName , "r"); struct stat st; stat(LocalFileName, &st); filesize = st.st_size; Interval = (512 / (float)filesize) ; while((FileBlockSize = fread(FileBlockBuffer,sizeof(char),512,FilePointer))>0) { send(SocketDiscriptor , FileBlockBuffer , FileBlockSize,0); bzero(FileBlockBuffer, 512); Percent = Percent + Interval ; if (Percent > 1.0)Percent = 0.0; while(gtk_events_pending() ) { gtk_main_iteration(); } } update progress bar function gint UpdateProgressBar(gpointer data) { gtk_progress_bar_set_fraction(GTK_PROGRESS_BAR(data),Percent); } updating progress bar in the main function g_timeout_add(50,(GSourceFunc)UpdateProgressBar,SendFileProgressBar);

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• How to get the correct battery status?

  - by GUI Junkie

  At this moment, ever since I installed Ubuntu on this machine, the battery status says: not present. Looking at this answer, however, I find that /proc/acpi/battery/BAT1/info (sometimes its /proc/acpi/battery/BAT0/info, use tab complete to help) has the following info: present: yes design capacity: 4400 mAh last full capacity: 4400 mAh battery technology: rechargeable design voltage: 11100 mV design capacity warning: 300 mAh design capacity low: 132 mAh cycle count: 0 capacity granularity 1: 32 mAh capacity granularity 2: 32 mAh model number: BAT1 serial number: 11 battery type: 11 OEM info: 11 In accordance to this answer, I've checked the /proc/acpi/battery/BAT1/state file: present: yes capacity state: ok charging state: charged present rate: unknown remaining capacity: unknown present voltage: 10000 mV The acpi -b command returns: Battery 0: Unknown, 0%, rate information unavailable Any suggestions on getting the battery info updated?

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• Cannot enable Additional drivers for Broadcom in 12.10

  - by Compt

  tl;dr version: Additional Drivers does not work for enabling a driver in Ubuntu 12.10, however it worked in 12.04. I upgraded to Ubuntu 12.10 from 12.04 via a live USB. I did a fresh install to avoid any conflicts. From 12.04 I know that my wireless card has proprietary drivers that could be installed via Additional Drivers. I did eventually find additional drivers in the software sources menu, however when I attempt to switch to Broadcom 802.11 Linux STA wireless driver source from bcmwl-kernel-source, it not only does not work, it in fact disables my wireless completely. The only way to revert this is to restart, and revert back to "do not use the device". Then upon another restart, my wireless will function once again. I was curious if anyone else had this issue, and if there was a fix for it as of yet. I looked on launchpad and it may be a potential bug, but I am unsure. Any help would be greatly appreciated (and sorry for that wall of text). Until then, I'll continue to use my wireless as it is (or revert to 12.04), but I do notice a slower connection without it enabled.

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• Problem with dpkg-preconfigure, how to correct?

  - by Eric Wilson

  I was trying to install TeamViewer, and I followed the instructions here even though they specify 11.10 instead of 12.04 (what I'm running). In particular, I executed. $ wget http://www.teamviewer.com/download/teamviewer_linux.deb $ sudo dpkg -i teamviewer_linux.deb The dpkg command failed, and after this point my packaging system has been broken. The software center instructs me to try: $ sudo apt-get -f install which leads to Reading package lists... Done Building dependency tree Reading state information... Done Correcting dependencies... Done The following packages will be REMOVED: teamviewer7:i386 0 upgraded, 0 newly installed, 1 to remove and 17 not upgraded. 9 not fully installed or removed. Need to get 89.0 kB of archives. After this operation, 81.9 MB disk space will be freed. Do you want to continue [Y/n]? y Get:1 http://us.archive.ubuntu.com/ubuntu/ precise/main dash amd64 0.5.7-2ubuntu2 [89.0 kB] Fetched 89.0 kB in 1s (83.9 kB/s) E: Sub-process /usr/sbin/dpkg-preconfigure --apt || true returned an error code (100) E: Failure running script /usr/sbin/dpkg-preconfigure --apt || true At this point I'm stumped.

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• htaccess correct, Apache logs still showing the evil visitors with 200 code

  - by bulgin

  I hope someone can help me. Please take a look at the following snippet of Apache logs: 95-169-172-157.evilvisitor.com - - [12/Nov/2012:09:46:02 -0500] "GET /the-page-I-dont-want-to-deliver.html HTTP/1.1" 200 9171 "http://hackers.ru/" "Mozilla/4.0 (MSIE 6.0; Windows NT 5.1; Search)" I have the following included in my .htaccess for the root directory of the website and there are no other .htaccess files anywhere that would affect this: RewriteEngine On Options +FollowSymLinks ServerSignature Off ErrorDocument 403 "Nothing Interesting Here" order allow,deny deny from evilvisitor.com deny from hackers.ru deny from anonymouse.org allow from all I also have GeoIP functioning properly and have this included there: #for stuff from different countries RewriteCond %{ENV:GEOIP_COUNTRY_CODE} ^(UA|TR|RU|RO|LV|CZ|IR|HR|KR|TW|NO|NL|NO|IL|SE) RewriteRule ^(.*)$ [R=F,L I know this works because whenever I attempt to access the website from a proxy in say, Spain, I get the error message. I also know it works because when accessing the website from anonymouse.org, the proper error code page is displayed. So then why am I still getting these visitors who successfully access the page I don't want them to see with an Apache 200 code when it should be an error code?

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• Can't enable bluetooth because of adapter

  - by Eray

  I can't use my Bluetooth with Ubuntu 12.04 64bit . I have installed bluetooth, gnome-bluetooth and blueman packages. But i'm getting No adapter found error. eray@eray-vaio-ubuntu:~$ sudo hciconfig hci0 reset [sudo] password for eray: Can't init device hci0: Connection timed out (110) eray@eray-vaio-ubuntu:~$ rfkill list 0: hci0: Bluetooth Soft blocked: no Hard blocked: no 1: phy0: Wireless LAN Soft blocked: no Hard blocked: no 2: sony-wifi: Wireless LAN Soft blocked: no Hard blocked: no 3: sony-bluetooth: Bluetooth Soft blocked: no Hard blocked: no eray@eray-vaio-ubuntu:~$ sudo hciconfig sony-bluetooth reset Can't init device hci0: Connection timed out (110) eray@eray-vaio-ubuntu:~$ I'm remambering, i was able to use my bluetooth with Ubuntu, about 7-8 months ago. So Ubuntu supporting my bluetooth device. How can i install my bluetooth and solve this problem ? NOTE , I've read a lots of question about this. Generally there are 3 answers. Upgrade to 12.04 execute sudo hciconfig hci0 reset command unblock your device if it's blocked. But as you seen, none of them helped me. Because of this, i'm asking this question.It's not a duplicated question.

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• Is this method of writing Unit Tests correct?

  - by aspdotnetuser

  I have created a small C# project to help me learn how to write good unit tests. I know that one important rule of unit testing is to test the smallest 'unit' of code possible so that if it fails you know exactly what part of the code needs to fixed. I need help with the following before I continue to implement more unit tests for the project: If I have a Car class, for example, that creates a new Car object which has various attributes that are calculated when its' constructor method is called, would the two following tests be considered as overkill? Should there be one test that tests all calculated attributes of the Car object instead? [Test] public void CarEngineCalculatedValue() { BusinessObjects.Car car= new BusinessObjects.Car(); Assert.GreaterOrEqual(car.Engine, 1); } [Test] public void CarNameCalculatedValue() { BusinessObjects.Car car= new BusinessObjects.Car(); Assert.IsNotNull(car.Name); } Should I have the above two test methods to test these things or should I have one test method that asserts the Car object has first been created and then test these things in the same test method?

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• How to enable directory browsiing in IIS7?

  - by frankadelic

  How I enable directory browsing in IIS7? MS technet says this can be done in the IIS console: Open IIS Manager and navigate to the level you want to manage. In Features View, double-click Directory Browsing. In the Actions pane, click Enable if the Directory Browsing feature is disabled and you want to enable it. Or, click Disable if the Directory Browsing feature is enabled and you want to disable it. http://technet.microsoft.com/en-us/library/cc731109%28WS.10%29.aspx However, my IIS console doesn't have the Directory Browsing option mentioned in Step 2. How can this option be made available. Note, this is for a static HTML site, so I don't have any web.config or ASPX files.

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• Enable Seamless Transformation and Effective Adoption of Change with Oracle User Productivity Kit

  Organizations go through continuous transformation and change - whether it is through mergers and acquisitions, standardizations of systems, a rollout of a new application or business process improvements. With Oracle User Productivity Kit, project teams can capture and deploy best practices to streamline efficiency, reduce cost, and ensure successful change adoption. Discover how organizations can leverage the multiple outputs of Oracle UPK for all phases of the project from blueprinting/design/configuration to testing/training/go-live as well as maintenance and support.

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• Enable MultiSelect in WPF ListView (2)

  Make your ListView support item selection by dragging,

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• HP Envy dv6t-7300: Disabled WiFi through button and can't enable it anymore

  - by Mateus B. Cassiano

  Well, I have a HP Envy dv6t-7300 laptop that came with a Ralink RT5390 WiFi card. Everything was working perfectly, and eventually I press the WiFi button in my keyboard to toggle the card on/off. Until today, all worked right: if the wifi was off (wifi LED amber) and I press the wifi button, after a few seconds the LED turn white and everything works. If I repeat the process, the wifi LED turn amber and the card get disabled, but now, I can't turn it on anymore. running sudo rfkill list all I get: 0: phy0: Wireless LAN Soft blocked: no Hard blocked: no 1: hp-wifi: Wireless LAN Soft blocked: no Hard blocked: yes So, I ran sudo rfkill unblock all but nothing changed. As a side note, if I run sudo ifconfig wlan0 up, the indicator LED gets white (indicating that the card was enabled), but Ubuntu still say that the card is blocked by hardware. Extra information: the card works without issues in windows and in Ubuntu installer (booting from a live CD). I'm using the card out-of-box, using the drivers already included in Ubuntu 12.10. The module rt2800pci is loaded and working fine, not blacklisted, etc, etc. The card and the button toggle worked flawlessly until today, when I toggled it off and can't turn it on anymore... The problem is back, but in a different manner: if I don't press the wifi key a few times during the grub loading, in the login screen the wifi button will be ambar (disabled), pressing it will toggle it white (enabled) or ambar (disabled) again, but ubuntu still says that the network card was disabled by hardware and doesn't connect... In other words, if I don't press the WiFi button a few times when Ubuntu is booting, it will be stuck with the "network card was disabled by hardware" message, even if the light is white (enabled). Any clue? Maybe a error in some startup script or config file?

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• Correct way to sell commercial product with GPL small scripts in it

  - by Victor

  I'm developing a commercial cms. I'm going to sell this cms. I use jQuery, also I use date and time picker jQuery plugin in my cms, I can say this is just a 1% of my big script, I don't want sell my whole program as GPL because of these two small integrations (jQuery and DateTime picker). Please ask on these questions: I'm worry about license issue. What is the best way to sell my product(licensing type)? Is there any way to provide some partial licenses? I mean just add small notification in my license that the jQuery and The DateTime picker is still in GPL, but other part of this CMS has commercial license? If there isn't any way to sell commercial product as close source with GPL small parts, what is the most strong license for selling my product to keep it safe? Please sorry for my English

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• How can I enable audio system on Envy 15t-3200

  - by Dean Howell

  I just received my HP Envy 15 (June 2012 model) and I cannot get my audio system to fully function. This laptop has 6 speakers. 1.) 2 speakers on the front of the laptop (Stereo). 2.) 2 speakers above the keyboard, just before the LCD hinges. 3.) 2 Subwoofer speakers underneath the battery cover facing downward. Only the 2 speakers in the front are working. This is a "Beats" audio system. There have been many beats audio laptops before this one, so maybe if someone has experience with those, it might translate to this device.

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• correct way to implement auth/acl in mvc

  - by WiseStrawberry

  I am looking into making a correctly laid out MVC auth/acl system. I think I want the authentication of a user (and the session handling) to be seperate from the ACL system. (I don't know why but this seems a good idea from the things I've read) What does mvc have to do with this question you ask? Because I wish for the application to be well integrated with my acl. An example of a controller (CodeIgniter) <?php class forums extends MX_Controller { $allowed = array('users', 'admin'); $need_login = true; function __construct() { //example of checking if logged in. if($this->auth->logged_in() && $this->auth->is_admin()) { echo "you're logged in!"; } } public function add_topic() { if($this->auth->allowed('add_topic') { //some add topic things. } else { echo 'not allowed to add topic'; } } } ?> My thoughts $this->auth would be autoloaded in the system. I would like to check the $allowed array against the user currently (not) logged in and react accordingly. Is this a good way of doing things? I haven't seen much literature on mvc integration and auth. I want to make things as easy as possible.

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• How to Enable Priority Inbox on Android (and Setup Important-Only Notifications)

  - by The Geek

  Yesterday Google released an updated Gmail application for Android 2.2 phones that supports the Priority Inbox feature—and more importantly, allows you to change your notifications to only alert you for important email. Let’s take a look. Note: If you’ve never used Priority Inbox, you should really give it a try—it rearranges your email into what is and isn’t important, and you can customize how it classifies messages easily. The idea is that it learns over time, so if you send a lot of emails back and forth with somebody, it will know that they are probably important—you can manually adjust the settings as well. To update the Gmail application, you’ll want to head into the Market and access Menu –> Downloads, where you should see Gmail in the list, and it should let you update from there. If you don’t see an update, you’re either not running Android 2.2, or it has already updated automatically Latest Features How-To Geek ETC The 50 Best Registry Hacks that Make Windows Better The How-To Geek Holiday Gift Guide (Geeky Stuff We Like) LCD? LED? Plasma? The How-To Geek Guide to HDTV Technology The How-To Geek Guide to Learning Photoshop, Part 8: Filters Improve Digital Photography by Calibrating Your Monitor Our Favorite Tech: What We’re Thankful For at How-To Geek Settle into Orbit with the Voyage Theme for Chrome and Iron Awesome Safari Compass Icons Set Escape from the Exploding Planet Wallpaper Move Your Tumblr Blog to WordPress Pytask is an Easy to Use To-Do List Manager for Your Ubuntu System Snowy Christmas House Personas Theme for Firefox

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• HowTo Enable jBullet DebugMode

  - by Kenneth Bray

  I would like to render the physics world of jBullet to debug some issues in my game, and I am not finding too much on enabling the debugDraw method of jBullet. Do I need to write my own debugDraw method, or is there an easier way to draw the physics models to the screen? If there is already a built in method I would prefer to use that, otherwise I guess I will start making my own functions to handle this.

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• correct pattern to handle a lot of entities in a game

  - by lezebulon

  In my game I usually have every NPC / items etc being derived from a base class "entity". Then they all basically have a virtual method called "update" that I would class for each entity in my game at every frame. I am assuming that this is a pattern that has a lot of downsides. What are some other ways to manage different "game objects" throughout the game? Are there other well-known patterns for this? My game is a RPG if that changes anything

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