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• X11 forwarding through SSH

  - by martinjlowm

  I have been playing around with X11 forwarding the past few hours and so far I've managed to forward my desktop pc's X Server to my laptop, using X11VNC as server and X2VNC as client. X2VNC uses Xinerama to provide a dual-screen-like behavior between my laptop and my desktop pc. It's actually really great! I know that most Linux systems run Xorg and desktop environments on TTY7. Therefore I was thinking, is it in any way possible to have the VNC-tunnel tied to it's own TTY? It would be great to be able to switch forth and back between two TTY's in order to choose which machine to manage. And I would like this approach more than using Xinerama or a GUI.

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• Where to apply these akonadi settings for mysql-server?

  - by piedro

  I Am using an external mysql-server to work with akonadi. (using KDE4). Now I could solve all problems with it, but I still have to apply some settings to the "mysql-global.conf"-file of the server. That's what is suggested for example: # wait 365d before dropping the DB connection (default:8h) wait_timeout=31536000 So I tried to change this setting via the mysql console. But it's not reflected anywhere in the /etc/mysql/my.cnf file. (etc/akondai/mysql-global.conf seems to have no effect on the mysql-server either!) My question: Where to put these (or similar) settings to apply them in a way that akonadi won't drop the connection with an external server (globally I guess?)?

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• Having an issue with Java/ minecraft (Windows 7 64bit)

  - by MetroGnome

  I have had issues with java on my computer for a while. First of all, java has never worked on Google Chrome or Firefox, Only IE. Whenever I need to use Java, I use IE. Now, I just tried to play minecraft the other week and I receive the error "fatal error (1)" and get a black screen (this is on the online free version). Now, I searched for java and found that I have Java 32 bit. I cannot uninstall it on Revo uninstaller or Windows uninstaller. What should I do?

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• How to connect to VPN using commands in Linux (Fedora 16)

  - by WarFox

  Usually, I use the network connections icon on the top bar to connect to VPN. The connection is configured properly and it connects well. Configuration screen shot is given below. As you can see I have selected the 'Connect automatically' option. But this option doesn't help in connecting to VPN automatically upon login. This is my university VPN and it uses 'Point-to-Point encryption (MPPE)' for authentication I need to connect to the VPN using command line, so that I can write a script and run it at start up, so the connection is automatically established every time I login. This will also help in connecting to VPN when I login from 'init 3' mode. I depend on this VPN connection for my internet access. Please help me with the required commands.

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• Replacing GRUB2 with Windows boot loader

  - by KovBal

  I'm trying to replace GRUB2 with Windows' standard boot loader (bootmgr?), but I can't get it to work. My Windows 7 install is in a single NTFS partition, which is marked as active (boot flag is set). First, I tried the automatic repair with the install disk, but it didn't detect any problems. Then I ran bootrec /fixmbr and bootrec /fixboot, but all I got was a black screen at boot with a blinking cursor. After that I created a boot partition for GRUB2, I figured, at least I can use it to chainload, but it give me a "disk reading error". If I used GRUB's ntldr loader, than I got error 0xc0000225 (some sort of BCD error). I tried to rebuild the BCD from the rescue environment, and it was successful, but the error didn't go away. Update: I've tried to rebuild the BCD, but nothing changed...

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• Apache Virtual Host setup not working?

  - by user214243

  I had follow this link to setup my first virtual host with apache2 under ubuntu 12.x. Looks easy but is not working. [How to][1] My internal dns can resolv the name, but my browsers is not showing me my webpage. from my lan, Im using ubuntu server no GUI. Every time I point to my virtual host name, I receive apache default page, I cannot see my custom page. My docs are under /home/mydomain/public_html This is my settings: ServerAdmin webmaster@localhost ServerName example.com DocumentRoot /home/example.com/public_html Options FollowSymLinks AllowOverride None Options Indexes FollowSymLinks MultiViews AllowOverride None Order allow,deny allow from all The rest of the file is the same. No, I even try to change the port from *:80 to *:81, restart and don't see apache listen to port 81. My localDNS running in other machine works. What I forget?

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• GPU optimization question: pre-computed or procedural?

  - by Jay

  Good morning, I'm learning shader program and need some general direction. I want to add noise to my laser beam (like this). Which is the best way to handle it? I could pre-compute an image and pass it to the shader. I could then use the image to change the opacity and easily animate the smoke by changing the offset of the texture lookup. I could also generate noise in the shader and do the same thing the texture was used for. Is it generally better to avoid I/O to the graphics card or the opposite? Thanks!

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• How to get Windows XP to play a sound on mouse clicks

  - by Re0sless

  Is it possible to play a sound each time the mouse button is pressed in Windows? We have some touch screens PC's that run Windows XP, and would like them to beep when pressed so the users know they have registered the click. (the touch screen acts a the left mouse button) I have looked in Sounds and Accessibility options but can not see anything that would work. If there is nothing in windows that would do this is there any third party applications to do the same job. We don't need anything lavish just a simple click or beep would suffice.

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• Why can't I update to 11.04?

  - by user285982

  I am using Ubuntu 10.10 64 bit, and I can browse the internet fine. I am typing this using the machine. When I attempt to use the Ubuntu Update Manager to update to 11.04, I get this error message: Failed to Fetch Fetching the upgrade failed.There may be a network problem. And when I try to change servers, here is what I get: Failed to fetch http://us.archive.ubuntu.com/ubuntu/dists/maverick/main/source/Sources.gz 404 Not Found [IP: 91.189.91.15 80] It repeats with other lines, 404 not found. Some index files failed to download, they have been ignored, or old ones used instead. Any ideas?

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• Send chrome tab from w7 laptop to w7 HTPC? (Like with iPad to AppleTV)

  - by Justin

  For the last couple days I've been trying to figure out how to get open tabs syncing between chrome installs on different computers to no avail. (if it's supposed to work the way I think it should, that is.) I have a laptop that I do all my web browsing on. Once in a while I'll come across some video that's worthy of the big-screen and the surround sound and want to open that tab (or media) on the HTPC. It'd be nice if I could just 'Right click Send to HTPC' and it opens up there with no further hassle. But even opening chrome on the HTPC and finding all my current tabs waiting would be fine. Alas, open tabs syncing doesn't seem to actually open tabs on other devices for me. Has anyone come up with a way to accomplish anything similar? Thanks all!

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• Keeping application backend and UI synchronised

  - by Deanna

  Hi all. I have an app that works with a list of objects so has one central keyed list. The main window has a tree containing these object with some information, which is easy enough to populate as a one off event after loading. Now, the complicated part, any part of the application can add, remove, and more importantly change the details of those objects at any time (all in the same process) and I'd like the tree to update to suit. I have a few options including passing events back down from the object to the list to the form which seems to be the most flexible way. I can also do it lazily and repopulate the tree each time or periodically (very hackish). Does anyone have any better thoughts on how to structure this? This is being done in C# 2.0 but the concepts apply to any environment. Thanks

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• What would be a good way to request comments?

  - by WarpEnterprises

  In the project/team I'm working the frequency of comments is a little low. One reason might be that it is not clear to the long-time devs what lines in the code really needs a comment (each part of the project has quite fixed devs). To increase this we plan to let team members review the code and check in "requests for comments", which the main dev of that part should replace with useful comments. Do you think this could work? If "yes": what tags should we use to mark? (e.g. //TODO please comment) Can you think of alternatives for this process? Edit: I appreciate your answers about best practice in commenting and writing code, and I completey agree. But my question targets the cases where refactoring is not an option (not wanting to change working code, not wanting to "accuse" main dev of producing code that needs refactoring,...) - so only more or better comments are an option (at least for this question).

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• Windows XP Log In: Can't do it. Logon Message popup.

  - by kojobino

  A friend recommended this site to me. Hope you can help! I can't seem to log into Windows. I boot my computer. The log In screen appears. I put in my user name and password, hit OK, and the following message pops up: "The system could not log you on. Make sure your user name and domain name are correct, then type your password again. Letters in your passwords must be typed using the correct case". NOTE: I have tried Safe Mode and the same message pops up. Just to be clear, I am not able to get into Windows (I'm stressing this b/c I've come across some suggestions that require you to be in Windows, which doesn't help in my case). Thanks for your assistance. -Stranded in Toronto

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• Can I get some help on a javascript project?

  - by HenryOrrin

  I'm learning javascript and I thought it would be fun to build a "simple" calculator. I spent a few hours coding, and implementing the functions, but it only works partially. Can one of you look at my code and try and figure out what's wrong? The Calculator.zip Here's some explanation of the issues: the add(), subtract(), multiply(), and divide() methods work partially, not at all, or don't do as they're supposed to.. sometimes the 0 wont clear when the replaceDisplay() method evaluates the screen. If it helps, I'm also using jquery, so keep that in mind. Thank you!

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• Windows Server 2008 Enterprise. Incorrect password on screensaver

  - by LarsErikP

  First some software details: Thin client: Wyse C10LE Citrix - Windows Terminal Services - Windows Server 2008 Enterprise desktop I have a user with a very strange problem. When he locks his screen with Win+L, Windows claims he's entering wrong password when he tries to log back in. The only solution is to hard reboot the WYSE, and log back in. This reboot doesn't kill his Windows session. I've checked for errors in keyboard settings (wrong layout etc), nothing found. I suspect errors in his profile/errors in AD. No other users in the domain has this problem. EDIT: Sorry, it's NOT Win R2. Plain Windows Sever 2008

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• Why I am getting following error when trying to start SDK manager?

  - by rishiag

  I have a 64 bit- 20 GB Ubuntu partition which has very less usable space. So I have put Eclipse in my Ubuntu and downloaded sdks to a folder in my another partition. So when I try to start sdk manager, I am getting the following error in my console: Unexpected exception 'Cannot run program "/media/Data/android-sdks/platform-tools/adb": error=13, Permission denied' while attempting to get adb version from '/media/Data/android-sdks/platform-tools/adb' I have run chmod recursively on android-sdks directory. If I change the address for sdks to Ubuntu partition, sdk manager starts successfully. Is there anything I can do other than increasing the partition size? Thanks

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• Display issues on new OpenSUSE install

  - by user1319182

  I installed OpenSUSE 13.1 on my newly built PC, but the display is just horrible : the edges of the screen are missing. For example, I can't see all the top part, I can barely read the date and I see "ctivities" instead of "Activities". However, when I take a screenshot everything seems to be fine (the cursor doesn't appear though) the characters are sometimes too big and sometimes too small the cursor is huge and many other strange things. I took a few pictures I'm using an Intel integrated GPU (HD4400) and made all the possible updates with YaST. Any idea how I can fix this? Thanks

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• And again... VMware Player 4.0.4 on Ubuntu 12.04 (Precise Pangolin)

  Even with the new version of VMware Player 4.0.4 you are still required to patch their sources. So, same game as last month. Just changing the value of the required version in the kernel patch script of Stefano Angeleri (weltall) and you are done: nano patch-modules_3.2.0.sh Please change line 8 at the top of the script like so: plreqver=4.0.4 Save your modification and then run the following commands: sudo rm /usr/lib/vmware/modules/source/.patchedsudo ./patch-modules_3.2.0.shsudo service vmware restart And again, on first start VMware will present you their EULA which you have to accept, and everything gets back to normal operation mode. Interestingly, one day ago the Ubuntu repositories provided a newer kernel version 3.2.0-25, so everything is running fine for now.

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• ASUS N550 laptop not charging on ubuntu after updating kernel

  - by OBY Trance

  I'm using Ubuntu 13.10 on a pretty new ASUS N550jv laptop. When I was using kernel linux-image-3.11.0-11 everything was quite well (kinda..), however, when I updated the kernel using the automatic update, the kernels which were released afterwards (12+) were faulty on my machine, and caused the battery not to be charged and only stay at their current charging level (even when the machine was off!) The only fix I had was to roll-back to the '..11' version (on boot screen - advanced options), and hard-reboot (AC cord disconnected and reconnected) but now version 14 was released and "pushed away" the good old version 11. How can I fix that?? Please help me...

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• Xubuntu loading slow after the session/password select

  - by Bryan

  I recently installed Xubuntu on my computer. I love the distro. Everything was fast, and then the bootup slowed down. It started taking a couple minutes for my user selected wallpaper to show and the menu to appear, basically do anything on the comp. I do not recall doing anything other than changing the swappiness. It did not affect it initially. Would that be something to affect it or are there other ideas that might have caused this sudden change.

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• Actinic and Google Analytics: does it mess with my stats?

  - by tjcss

  My fathers website is built using Actinic - not by me but by a local company - and since he went with them some years ago his traffic never went down, but has stayed more or less consistent which is fine. My question is this; does using actinic somehow confuse analytics? As it shows that 99% of all visitors come "direct", as in, not by organic search. Previous to using Actinic he would get 70 to 85% of new hits exclusively from organic search terms. So I'm wondering if Actinic somehow messes with these new hits and redirects them to a "home" page.. Not sure exactly what I mean but this change in stats is concerning and I'm struggling to find an explanation.

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• FTP Changes file permisions

  - by AkBKukU

  I am trying to make changes to my website over ftp but when I save any files it changes the permissions and owner to my username. I can edit files in the same folder trough samba without changing the permissions. I really don't understand how the permissions for the /var/www folder work and I'm pulling my hair out trying to get it to work. I have recently made changes to the permissions of the /var/www directory (following this guide) so I could modify files in the www root. Right now I have the entire contents of /var/www set as -rwxrwxr-x 1 www-data www-data but when I change a file over ftp it becomes -rw------- 1 akbkuku akbkuku, akbkuku being my username. I am using vsftpd as the server, and I login with my normal user. How do I make it leave to permissions alone? At this point I'll even take a way yo reset all the permission back to stock and I'll just never modify files in the web root.

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• Which is the way to pass parameters in a drawableGameComponent in XNA 4.0?

  - by cad

  I have a small demo and I want to create a class that draws messages in screen like fps rate. I am reading a XNA book and they comment about GameComponents. I have created a class that inherits DrawableGameComponent public class ScreenMessagesComponent : Microsoft.Xna.Framework.DrawableGameComponent I override some methods like Initialize or LoadContent. But when I want to override draw I have a problem, I would like to pass some parameters to it. Overrided method does not allow me to pass parameters. public override void Draw(GameTime gameTime) { StringBuilder buffer = new StringBuilder(); buffer.AppendFormat("FPS: {0}\n", framesPerSecond); // Where get framesPerSecond from??? spriteBatch.DrawString(spriteFont, buffer.ToString(), fontPos, Color.Yellow); base.Draw(gameTime); } If I create a method with parameters, then I cannot override it and will not be automatically called: public void Draw(SpriteBatch spriteBatch, int framesPerSecond) { StringBuilder buffer = new StringBuilder(); buffer.AppendFormat("FPS: {0}\n", framesPerSecond); spriteBatch.DrawString(spriteFont, buffer.ToString(), fontPos, Color.Yellow); base.Draw(gameTime); } So my questions are: Is there a mechanism to pass parameter to a drawableGameComponent? What is the best practice? In general is a good practice to use GameComponents?

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• Best monitor for reading

  - by wajed

  Will response rate make a difference? What is good brightness? What is a good contrast ratio? Definitely there are other things to look for, so please give me your opinion. Also, what screen size is good for reading? What size would you choose from 17-22? I'm thinking of getting one 17-19 for reading, and one 22 for movies. Or maybe 2 22" one vertical and one horizontal is better? I think I should look for lower native res., right?

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• How do I secure a Tomcat installation?

  - by spangeman

  I have installed tomcat on my Ubuntu Home 11.10 system and can successfully access the test page online after port forwarding on 8080 within my router. I have not made any other changes to the router, Ubuntu or the tomcat install, everything else has remained standard. I intend on using this to play around with Java Servlets and basic web development for my own personal use. What steps, if any, would you suggest I take to ensure this is secure? Should I change anything within the Tomcat configuration? This seemed like a good idea to limit access - http://www.seankilleen.com/2010/09/how-to-allow-only-specific-ip-addresses_30.html But I am open to any other recommendations.

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