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• How do I get a Canon LBP5000 Printer working?

  - by Saigun

  I have unsuccessfully attempted to install a Canon LBP5000 printer on Ubuntu 11.10. I have attempted all possible methods to be found on the web, but nothing seems to work. My latest attempt was Radu Cotescu's script from http://radu.cotescu.com/how-to-install-canon-lbp-printers-in-ubuntu/ Using the script everything appears to work as described during the installation process, but when attempting to actually print, it remains stuck in “processing” (regardless of what I attempt to print) [There is no additional error message]. Could anyone help me? It would be very much appreciated!

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• What's a viable way to get public properties from child objects?

  - by Raven Dreamer

  I have a GameObject (RoomOrganizer in the picture below) with a "RoomManager" script, and one or more child objects, each with a 'HasParallelagram' component attached, likeso: I've also got the following in the aforementioned "RoomManager" void Awake () { Rect tempRect; HasParallelogram tempsc; foreach (Transform child in transform) { try { tempsc = child.GetComponent<HasParallelogram>(); tempRect = tempsc.myRect; blockedZoneList.Add(new Parallelogram(tempRect)); Debug.Log(tempRect.ToString()); } catch( System.NullReferenceException) { Debug.Log("Null Reference Caught"); } } } Unfortunately, attempting to assign tempRect = tempsc.myRect causes a null pointer at run time. Am I missing some crucial step? HasParallelgram is an empty script with a public Rect set in the editor and nothing else. What's the proper way to get a child's component?

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• How to move to Java enterprise development after Python and Ruby?

  - by rdasxy

  I used to develop in Django/Python and Rails/Ruby (and before that C/C++ and C#), and I'm now at a job where we do enterprise Java development (Spring, Hibernate, RESTEasy, Maven, etc.) for web applications and web services. Coming from the Convention over Configuration world, what's the best way to get up to speed doing enterprise Java web services development? I know Java (the language) well, and I've written GUIs in Swing and basic JSP before, but nothing of the kind I'm doing now. Are there any recommended tutorials to get up to speed on popular Java enterprise development tutorials?

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• Does Ubuntu support SATA drives in AHCI mode?

  - by timelessbeing

  I have a current installation of Ubuntu 13. Will it boot if I switch my SATA controller to AHCI in BIOS? (I installed Ubuntu in IDE mode) I have to wait until I fix my GRUB (Windows ate it), so I thought I'd take a poll here first in case there are any precautions. I ask, because it was a royal PITA to do it in Windows. Will I need to reinstall Ubuntu to enable this? I don't mind doing that since it was just installed and I having nothing on it yet, and I kinda botched the install anyway.

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• Mouse permanently stuck on left side of screen

  - by Alex

  One of my two monitors is died, so while my computer was turned off I unplugged the dead monitor then turned my computer back on. When I got to the log in page I typed my password and got to the desktop my mouse was stuck to the left edge of the screen. I can move it up and down, and left and right click, but it won't come off the edge. I tried switching the monitor cable to the other slot to see if that would make a difference but nothing changed. If it makes a difference, I'm using Kubuntu.

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• How to run Android Applications in Eclipse?

  - by Raahul

  my system is Dell Inspiron 15R (N5010) and i am having trouble becuase of 64 bit system. on running Android Application i am getting error: Error executing aapt. Please check aapt is present at /home/rahul/android-sdks/platform-tools/aapt before this error i was getting adb not found error. i tried to install ia32-libs but can't. i also put my question here (How to install ia32-lib on 64 Bit System?) but nothing helped. please help !!

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• Satellite L640 Battery Applet Problem

  - by Dean

  Hayy guy i got a satellite l640 and i installed ubuntu 12.04 on it and i dont get the battery percentage ive tried a fair bit but this is my first time using linux. Ive gone into the power option and ive installed battery status apps and still i get nothing. There was one saying how much amps and what not the battery has and it all has 0.00 for everything, ive also tried the terminal cammands to see the percentage and that doesnt work. Is there anything i can do or should i just got back to windows.

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• can't ping from virtualbox ubuntu server --nat connection

  - by George

  i set up an ubuntu server in virtual box following these and these instructions.My connection worked,also ssh . Then, i signed up in dyndns.com ,i configured the router ,but in the port forward i changed the 2222 port to 80 because it couldn’t forward from 2222.My port is open and accepting connections but i don’t have any more connection from the server in the virtual box. From virtual box settings-network-port forwarding , i use: Host IP :127.0.0.1 , Host port :80 , Guest Port :22 ,Guest IP : its empty. I am not sure if i am using right the address in /etc/network/interfaces , i use 192.168.0.2 and also this address i use for the firewall rules in the router. Also,in the server /etc/resolv.conf i put that address and in /etc/mysql/my.cnf. I can ping that address but nothing more.(of course neither ssh works) Thank you

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• Should you document everything or just most?

  - by TheLQ

  It seems a bit of a controversial subject to document everything, including the "JavaBean" syntax of getters and setters for fields: People say its needlessly long and repetitive breaking DRY (don't repeat yourself), that the naming convention should explain everything, and it clutters code/documentation. Sometimes those arguments work. But other times, you end up with this: Above is common to open source projects that do boldly follow those principles. Your left with entirely useless documentation. That doesn't explain anything about whats going on underneath, the possible effects, or even what the expected value is (could it be null or never null? I don't know, the Javadoc doesn't tell me). So when should I document? Do I document everything even if it occasionally clutters code? Or do I document nothing since in my eyes its "obvious"?

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• How do I customize desktop wallpaper slideshow via XML?

  - by Pithikos

  I spent some time and tried varioues things but nothing works. Here's what I have tried so far: Making a new folder /usr/share/backgrounds/mywallpapers and add my own background-1.xml in there. Copying a bunch of my own wallpaper files into /usr/share/backgrounds/ Copy /usr/share/backgrounds/Contest/background-1.xml to /usr/share/backgrounds/ I logged out and in and no changes in Appearance app. I have heard about Wallch but I don't want some app running in the background all the time. I'm not even sure Wallch will work with Gnome 3. I also tryied gnome-3-wp (Gnome 3 Wallpaper Slideshow app) but it just seems broken for Oneiric Ubuntu 11.10. Anyone has a solution?

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• Problems hiring someone on elance or similar sites

  - by akim

  I am assigned to hire some developers/designers in these kind of sites, and I'm looking for war stories about problems with this strategy. All I found so far are tips about getting more jobs as a freelancer, but nothing about being in the other side. We need a web designer and maybe a web programer for a internal and small site, but really important with a very short deadline. Any thoughts about? Does it worth to hire someone? Or we should work extra hour and get this done by ourselves?

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• Oracle Fusion CRM and Lotus Notes Integration by iEnterprises

  - by Richard Lefebvre

  Integrate Oracle Fusion CRM and Lotus Notes in one easy step with nothing to install other than a 'plugin' for your Lotus Notes client. The Lotus Notes Connector for Oracle Fusion CRM developed by iEnterprises is an easy to use tool that allows you to instantly synchronize your Lotus Notes email, calendar, ToDos and PAB (Personal Address Book) to and from your Oracle Fusion CRM system. It removes the need for time consuming copy and paste between these two systems. For more information, a solution data-sheet and/or to request a trial please visit .... http://www.ienterprises.com/products/lotus-notes-connector/connector-for-fusion.html or contact Matt Hatherley ([email protected])

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• 12.04 on Pentium Dual Core with 1GB or ram running slow

  - by Alex

  hey i have a Lenovo Thinkpad Laptop with Ubuntu 12.04 installed. It runs slow. I tried "System profiler and Benchmark" to test the computer. but the application quits and closes after the first few benchmark test. before it even gets to the other tests. So i tried "Hardinfo" that installed on the Puppy Linux live cd. that did the same thing (the apps look just a like). the memory usage isnt the problem on this pc. its the cpu processes. just running the "system profiler" app that comes with ubuntu uses about 34% on each core, default with nothing running its 5-10% on each core. i cant really find what the deal is other than that ubuntu is a cpu hog. so im testing unity2D at the moment to see how it goes. if you have any other suggestions, feel free to answer this question. thanks

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• Firefox really slows down my computer

  - by user199208

  I love Firefox; it has a special place in my heart. However, using the default Firefox in Ubuntu eventually causes my computer to freeze and crash. Nothing more to the problem, just the performance of Firefox really sucks, therefor causing a system-wide freeze. How do I know this? I use Google Chrome mostly, and other programs. None of them ever made my computer freeze. Is it an Update problem? If so, can I install a different version of Firefox from Mozilla.com? What's the deal here?

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• How to get Multimedia keys working at my ASUS N56VZ Ubuntu 12.04 Notebook

  - by linuxrecon

  I don't get my multimedia keys (FN Keys) working. The Notebook is a ASUS N56VZ. If I normally press the multimedia key combinations, nothing happens. If I try to get the keycodes while pressing, for e. g., FN+F8 (this should turn volume up) with xev or acpi_listen started, there is no output at all. Only the FN+F1 (Standby) and the FN+F2 (Wireless on/off) combinations are working, but also, there is no output at xev or acpi_listen, while doing this. What can I do here?

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• Netbeans shows only blank window

  - by aGr

  I am not able to launch Netbeans. When I launch it for the first time I normally get the netbeans splash screen, but after that nothing happens. When I try to launch it again, a small blank window appears. I am able to enlarge the window, but it is completely blank. Any ideas? As far as I remember this didn't come after some update/new install or whatever. Netbeans worked perfectly, but then all from the sudden...

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• Exporting .jar files with Jarsplice

  - by SystemNetworks

  Help! I'm Using Mac OS X 10.8 Mountain Lion and Using Eclipse. I'm using the library called Slick and Lwjgl. When i first exported it, it has a .jar file. I followed some You Tube Tutorials (Different, they don't have slick) It worked for them. I don't know why it dosen't work for me. Should i put Slick-util too? I didn't even use lwjgl btw. Please help!!! Jars I used(Libraries) Slick LWJGL(I didn't use it) Tutorials I followed TheCodingUniverse(Exporting) TheNewBoston(The Code and Set-up) Programs I used Eclipse IDE Java Jarsplice No warnings found or errors. It is perfect! But Nothing shows up in the screen everytime I pressed the jar(After Jarsplice) Help!!!

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• Problem with dash - there are no programs on the list

  - by sky

  As I said. There are no programs on the dash list (seacher on appmenu). Yesterday I logged into my account and I tried to find some program but there wasn't any! Additionaly, I tried to view installed programs and manually find program which I looked for, but nothing was displayed :( And today, when I want to turn on Ubuntu Software Center, it just don't turn on .< I'm using Ubuntu 11.10 (64bit). I installed "fresh" O.S. few days ago. Ubuntu is updated and has many Gigabytes of disk memory available. Please help me and my unfortunate O.S. Thank you for all answers.

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• Keeping up with upstream changes while adding small fixes or even major changes

  - by neo

  Often I need to apply some small fixes (to make them run on my environment) or even change some parts of the software (to tailor it to my needs) to software from outside. However this obviously creates problem with updating said software, even when it changes nothing related to my fix. It would be easier when the software provided integration for some kind of plugins but more often than not it doesn't. What would be an ideal workflow regarding that? Most of the projects are git repos I pulled from outside. How should I apply my changes so that I can update painlessly? You can assume that external changes are much more often and larger than my own ones, so reviewing each one of them won't be a solution.

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• Authorization pop-up requested by http://localhost:51675 every time I run Firefox

  - by user10711

  Using Ubuntu 10.04. Whenever I run Firefox I get a pop up requesting authorisation. It says 'a user name and password are being requested by http://localhost:51675. The site says "server" I have tried all passwords I know and nothing is accepted. If I click 'cancel' it disappears but re-appears after about 5 minutes. This whole 'experience' is accompanied by a great deal of hard disc activity. Can anyone help with this?

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• Bootable usb stick not boots

  - by Pavaroti Luciano

  i have problem. My bootable usb stick not boots any linux distribution.. it just stop at BIOS, like before turning on OS, but it does nothing. Windows xp/7/8.1 installs boots perfectly. It stopped booting every linux dist. after windows 8.1 installation. Later i deleted windows 8.1 and installed windows 7, and now i want to install ubuntu from usb, but i cant(From disk every linuxOS boots perfectly but not from usb) My computer now is like ~7years old. Specs: CPU: AMD Athlon 64 X2 5000+ Motherboard: GIGABYTE GA-M56S-S3 Video card: Nvidia n210 EDIT: It boots on my other laptop..its bootable, but from this.. NOpe, only windows installs

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• Unity Launcher and Menu Bar disappeared in 14.04

  - by Justice2497

  The menu bar and Unity launcher have disappeared in Ubuntu 14.04. Also cannot access the terminal via ctrl + alt + t. I have tried every solution for this issue that I can find, from re-installing untiy and compiz to resetting Unity and everything. I've gone into the compiz manager and reactived Unity. Nothing has worked. When trying to reset Unity, or do anything with it really, I get this message (process:6332): dconf-WARNING **: failed to commit changes to dconf: Could not connect: Connection refused EDIT: Installed 14.04 a day ago. The issue happened after a reboot. After installing virtual Box

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• Cannot Update through Manager or Terminal/ Software Center Does Not Work

  - by BROBA

  I installed Tor a few days ago via the terminal. I deleted some hashtags in the gedit polipo, and changed my proxy settings in chrome, but was unable to make it work and have since changed all of it back. I then downloaded the Tor browser bundle which works great, but ever since then have been unable to download updates or new software. The update manager says to "check internet connection" and the software center displays a mostly blank screen under apps like "rhythmbox" and just says "available from main source" when I click on "use this source" a refresh symbol appears on the upper right corner of the software center for a split second, and then nothing happens. The app does not download and isn't available in the dash. When I try via the terminal it says it's unable to connect to my ip address. I tried changing the server and unchecking all the repository options for software sources, all to no avail. WHAT DID I DO?????

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• No programs or applications show up in dash

  - by sky

  There are no programs on the dash list (seacher on appmenu). Yesterday I logged into my account and I tried to find a particular program, but there weren't any! Additionally, I tried to view installed programs and manually find programs, but nothing was displayed. And today, when I wanted to turn on Ubuntu Software Center, it just don't turn on. I'm using Ubuntu 11.10 (64bit). I installed this as a "fresh" OS a few days ago. Ubuntu is updated and has many Gigabytes of disk memory available.

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• Wired connection stops working suddenly

  - by user90950

  I have Ubuntu 12.04.I was downloading something via aria..and then it suddenly stopped..no connection to Internet. I tried to ping the host but no reply..also tried to ping the route 192.168.250.1 but no reply got a message saying 'Ubuntu 12.04 has experienced internal error'. I restarted system but nothing is sorted out. The wired connection 'establishes' but I am not able to use Internet or ping either to host/route/8.8.8.8. The wireless is working fine and it does connect to Internet. I have a static IP address for wired connection and it does connect to Internet on Windows OS installed on this same Laptop with same IP settings.. please suggest how do i get my wired connection start working properly again..

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