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• SMTP mailbox unavailable - intermittent and self-inflicted

  - by user134451

  I have an app that runs daily, sending confirmation emails to dozens of customers. Emails are sent using SMTP with authentication. The app also has some error handling, and occasionally anonymous SMTP is used to notify the webmaster that an e-mail issue has been encountered (a malformed email address, usually). Whenever these warning notifications are sent, the customer notifications that follow throw an error: "Mailbox unavailable. The server response was: 5.7.1 Unable to relay". The customer notification emails are sent, but my app drops into the exception handler. And all subsequent customer notification emails have this problem. Everything is fine next time the programs run, until a webmaster warning email is sent. Anyone have an ideas what would cause this? My first thought was that the client didn't like being switched back and forth between anonymous to authenticated modes. I created a separate client for each mode, but that didn't help.

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• Can't cancel the lubuntu shutdown screen

  - by user292040

  I've bought a small 5 year old small netbook. I noticed that lubuntu runs great on it, as it doesn't use much space/resources. But the problem is, my screen is just too small. Whenever I press the shutdown icon, I go to the shutdown, logout, restart, ect panel but the cancel button is tucked away right where my screen seems to end. I can't go back, it forces me to use an option besides canceling, which I can't reach with my mouse.Is there any way to change this so I get access to the whole screen. The rest seems to be showing just fine, like the launchbar, which is cleary visible and useable. Another thing that bugs me is that whenever I start up, I get an error along the lines of "conflict detected with stolen region". I read that it has something to do with graphics but I have no idea how to get rid of it. The error doesn't seems to cause any trouble as far as I can see, but it's annoying.

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• How to switch remotly from Ubuntu and Windows 7 and viceversa?

  - by Eros Erosoft

  i'm looking around, if anyone have a suggestion on how to switch from Ubuntu and windows 7 (and viceversa) while working remotely. Actually, i'm using the windows loader (BCD) on MBR, and i have 2 choice: Windows 7 Ubuntu 14.04 If i'm working on WIndows 7 and want to boot to Ubuntu, its easy, because i set as default Ubuntu. So at restart, system go directly to GRUB (with timeout sets to "0") and Ubuntu is there. But how i could get back to Windows again ? There is any chance ? While typing i was wondering if i could solve this trouble Forcing Windows loader to Ubuntu and let GRUB2 to Choose from different systems. Could be work ?

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• When should I clear an auxilliary render target?

  - by Raptormeat

  I'm using a few different render targets in my game in addition to the back buffer. These other render targets are only used in a few places, for specific tasks. I'm wondering when I should be clearing them. Right now I clear all of my render targets at the beginning of the frame, and it seems like I'm waiting for all the textures to clear before the rest of the drawing gets underway. Would it be more efficient to clear these textures later in the frame, when they aren't being used? Is there any hope of the GPU sort of clearing them "on the side" while unrelated rendering is happening? Or are these tasks always sequential and will I always need to wait for clearing?

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• Halloween: Season for Java Embedded Internet of Spooky Things (IoST) (Part 2)

  - by hinkmond

  To start out our ghost hunting here at the Oracle Santa Clara campus office, we first need a ghost sensor. It's pretty easy to build one, since all we need to do is to create a circuit that can detect small fluctuations in the electromagnetic field, just like the fluctuations that ghosts cause when they pass by... Naturally, right? So, we build a static charge sensor and will use a Java Embedded app to monitor for changes in the sensor value, running analytics using Java technology on a Raspberry Pi. Bob's your uncle, and there you have it: a ghost sensor. See: Ghost Detector So, go out to Radio Shack and buy up these items: shopping list: 1 - NTE312 JFET N-channel transistor (this is in place of the MPF-102) 1 - Set of Jumper Wires 1 - LED 1 - 300 ohm resistor 1 - set of header pins Then, grab a flashlight, your Raspberry Pi, and come back here for more instructions... Don't be afraid... Yet. Hinkmond

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• Google sort Supersonic, un moteur de requêtes open source écrit en C++ qui accélère le temps de traitement des données

  Google sort Supersonic un moteur de requêtes open source écrit en c++ qui accélère le temps de traitement des données Google vient d'annoncer sur son blog dédié à l'open source, la publication de Supersonic, un moteur pour optimiser l'exécution des requêtes. Supersonic est une bibliothèque de moteur de requêtes écrit en C++, qui « est extrêmement utile pour créer un back end pour une base de données orientée colonnes ». Selon Google, sa force principale réside dans sa vitesse. L'outil est un moteur de cache-aware, qui exploite plusieurs techniques d'optimisation de bas niveau pour assurer des meilleurs temps d'exécution et un débit élevé. Grâce à l'utilisation...

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• Software Center crashes and terminal errors

  - by user97521

  *note*I'm a new user to Ask Ubuntu and I've only recently switched to Ubuntu 12.04. When I try to open the software center (Ubuntu 12.04 32-bit) it will flash open, load for maybe 1-2 seconds, and then close. When i try using: sudo apt-get purge software center sudo apt-get install sudo apt-get update sudo apt-get upgrade I get this within the terminal: Reading package lists... Error! E: Problem parsing dependency Depends E: Error occurred while processing printer-driver-hpcups (NewVersion2) E: Problem with MergeList /var/lib/dpkg/status E: The package lists or status file could not be parsed or opened. *The problem fixed itself after I shut down my laptop for the night and turned it back on to check my e-mail this afternoon. If anyone could tell me how to fix this problem in the future please do, I would like to learn about these kind of things because i don't plan on putting windows on my laptop again :P *

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• suspend error on 14.04 LTS

  - by user1450663

  I've looked around and seems like various problems around suspend are wide spreaded for 14.04 release, nevertheless I haven't seen exactly my problem reported, nor my laptop model mentioned. So, the problem. When I press sleep button system seems to be going into suspend, i.e. screen goes black, it stops responding on the keyboard and wireless LEDs turn off, however the power LED doesn't go into suspend state and CPU fan also keeps spinning. But unlike the other problem described here https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1315435 when I close the lid and reopen it - system wakes up and goes back to normal locked screen state, so reboot is not needed. System details: This is a clean freshly installed Ubuntu 14.04, 32bit Laptop Dell D630 kernel 3.13.0-34-generic

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• Cloud proxying service

  - by ChristopherJ

  I have an app that mashes up images from Bing image search, it's hosted on Heroku written in rails. The app is client side in javascript, so the mashup is done on an html5 canvas - this means though that if I fetch the images direct from the Bing server, the canvas gets dirty and I can't save it. As a quick work around, i have set up a route on my rails app that simply proxies the request to Bing and passes the result back through. Obviously this is a very poor performance solution and will eat up my dynos very quickly. Can anyone suggest a more suitable option? At the moment I'm thinking maybe Amazon EC2 with apache mod_rewrite rules would be better performing and more cost effective. Is there a cloud service (or an app I could deploy to a cloud service) that would be more appropriate for proxying requests for me so that my javascript can fetch the images without dirtying the canvas?

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• Erratic display behaviour on 12.04 using an Asus Zenbook

  - by Azarias R

  When I first plugged in my 23 inch monitor through the mini-VGA port, everything worked...both display were detected, and worked. On the second or third plug in, the internal display would turn off, and only the external display would work. When I try to 'detect monitor', I got "could not set the configuration for crtc 63" a few times. Now, when I plug in the external display, I get a screen full of orange color on the external display, and the laptop display turns off. The only way to get things back is to force turn off the laptop and restart. Unplugging/replugging monitor doesn't work, and seems like ubuntu crashes. Can anyone help?

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• Multiply mode in SpriteBatch

  - by ashes999

  I have a "lighting" texture (black background with white or colours for lights) that I want to draw as a multiplcation operation. SpriteBatch.Begin can specify BlendState.Additive, but there's no BlendState.Multiplicative. I also tried the solution in this answer, but it didn't work -- even when I (incorrectly?) changed the code to work with XNA 4 style ColorDestinationBlend, I ended up with the final solution being inverted (black area where the light is, everything else is visible). I initially thought of a shader, but I couldn't get shaders to work with MonoGame, so I'm falling back to SpriteBatch.

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• Is it a good idea to always use Google as the first step to solving a problem? [closed]

  - by The Rubber Duck

  Possible Duplicate: Importance of learning to google efficiently for a programmer? Avoiding lengthy discussions, as a senior level student in CS, how can I get away from Googling problems I run into? I find myself using it too much; I seemingly reach for the instant answer and then blindly copy and paste code, hoping it works. Anyone can do that. I've read the related threads about being a better programmer, but mostly those recommend practicing on pet projects, which I have done, but again I feel EVERY wall encountered, from design through completion, was hurdled with Google. Do professionals instantly "research" their problem? Or do you guys step back and try and figure it out yourselves? I'm talking about both 'algorithm/design' problems as well as compiler issues.

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• How can I use Ubuntu to rescue files from an NTFS drive?

  - by dago

  I reinstalled windows on the laptop of my daughter. Before doing this we made a copy of her music, pictures and so on. Unfortunately, the folder we created for the backup was empty (I checked after I reinstalled windows). Today a miracle happened, as suddenly the data were back but when Itried to copy them to another place thez disappeared again. Checking the drive with disk utility I got the message "filesystem is not clean". Is there a way to recover the data? Preferred solution would be a tool with a gui. The drive I need to repair is formatted in NTFS and is connected via usb to laptop.

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• Dartisans ep 15 - A re-introduction to Dart Editor for the first time, again.

  Dartisans ep 15 - A re-introduction to Dart Editor for the first time, again. You've seen Dart Editor before, but not like this. Well, maybe you have. If you are new to Dart, you'll be amazed at how many features are in the editor. I'll show off features like code completion, code navigation, debugging, and more. When scaling up to hundreds of thousands of lines of code, you'll be very happy you have a tool that can watch your back. For more info on Dart, please visit www.dartlang.org From: GoogleDevelopers Views: 0 0 ratings Time: 01:00:00 More in Science & Technology

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• Collisions and Lists

  - by user50635

  I've run into an issue that breaks my collisions. Here's my method: Gather Input Project Rectangle Check for intersection and ispassable Update The update method is built on object_position * seconds_passed * velocity * speed. Input changes velocity and is normalized if 1. This method works well with just one object comparison, however I pass a list or a for loop to the collision detector and velocity gets changed back to a non zero when the list hits an object that passes the test and the object can pass through. Any solutions would be much appreciated. Side note is there a more proper way to simulate movement?

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• Really, Mobile Devices will Take Over the World?

  - by p.gielens

  My blog has been quiet for quite a while. My inspiration comes from crunching/exchanging information which I should do more often. Gartner analysis tells us that by 2013 mobile phones will overtake PC’s as the most common Web access device worldwide. A few years back I would have said non sense, but apparently most Web users are comfortable with less processing power. Just take a look at the increasing business in Netbooks. Wouldn’t it be great to have a mobile phone which can connect wirelessly to my home TV, monitor, car display, mouse, keyboard, etc? And to have the processing power of the current Netbook generation? Where can I buy it? Why are we making our PC devices (for instance the slate) smaller while we can make our mobile device’s functionality bigger? What about the single responsibility principle? Does it apply to physical devices as well as good object-oriented software?

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• Desktop not showing after playing with compiz

  - by Mark

  Having successfully installed Ubuntu 11.04 I decided to look into improving look and feel of the unity desktop. I could find no option to introduce any nice effects with the standard install, but a google session suggested Compiz would do the job. I installed this and selected the "Wobbly windows" option and this worked fine. After a while I thought I'd try some of the other available effects (can't remember which but may have been cube desktop) but this resulted in no windows showing at all. I now have just blank wall paper with no icons or menus. There are no error messages and right clicking the desktop produces a small context menu but nothing else. Rebooting brings me back to a blank desktop with just wallpaper. I do not know where to start.

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• Bluetooth connectivity on Ubuntu 11.04

  - by Andy Wiz

  I tried to connect to a device via Bluetooth from my laptop running Ubuntu 11.04, and I have some difficulty. I had to write a script to restart the Bluetooth dongle (it does not activate Bluetooth automatically). An icon appears in the top status bar on Ubuntu (good). Pairing of the devices happen easily enough (good). Trying to view files on the device from the laptop, the window that comes up does not show the paired devices. There is a window, but it's too small, and you dont know which device is selected (bad). If you choose the wrong device (I only knew it was the wrong device when my cell phone lit up), the icon on the status bar disappears, and doesn't come back, even though the devices are still paired (bad). Does anyone have that problem, and is there a fix? A.

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• Protecting the integrity of a game state while minimizing amount of data sent

  - by espais

  I'm developing a game in PHP/jQuery, and naturally have to be wary of any sort of data coming from the client. At present, I have tables of data representing the map (2D roguelike), monsters, items, and player(s). Initially, my thought was to simply package it all in a JSON object and send it every game tick, however when actually looking at the data I realized that's quite a large packet to be sending. So, my question is what is a good approach for minimizing data sent to the client? Obviously I would need to figure out some way of validating whatever it sends back. Initially we'd hoped to do some minimal verification on the client-side, but each time we thought of one thing we could do it is immediately invalidated with tools like Firebug. Kind of an open question I realize, but we want to get this right before we move on with our implementation so we don't have to shoehorn in bugfixes later on.

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• Ubuntu 12.04 - what is it with the keyboard layout resets?

  - by pjskyboy

  so, on each reboot my keyboard always resets to US (!?) sudo dpkg-reconfigure keyboard-configuration gives temporary relief. Is there a way to make it permanent? I tried: sudo dpkg-reconfigure console-setup This did not work, and on reboot gnome3 was no longer responsive so I am back to gnome classic.... My other grumbles are here: https://plus.google.com/113037534656133512306/posts/iWjU4zzvVdW Please stop breaking Ubuntu, it used to be great now its as bad as Windows used to be..... which now only costs £70 and is no where near as high maintenance.

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• Ubuntu 13.04 not detecting operating system Windows 8

  - by hualur

  I have a Samsung NP740U3E with pre-installed Windows 8 (boots with UEFI). I installed Ubuntu 13.04 without problems. Later, Windows 8 did a BIOS update which messed up everything, nothing would boot. I recovered everything and went back to fabric settings. Now Windows 8 works fine, but when I try to install Ubuntu it does not detect any operating system, so I can`t install Ubuntu alongside Windows. I`ve googled as much as I can, ran a boot-repair, disabled fast- and secure-boot. I have a GPT disc, been looking into gdisk without luck. Here`s my boot-repair summary http://paste.ubuntu.com/5835719/ Is it necessary to convert the GPT disc to MBR? Is it possible to hard-reset the disc "even more" than fabric settings? Thanks in advance.

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• How would a search engine see url encoded characters?

  - by K20GH

  I've got my URL however some of the strings would contain &. Obviously I can't use them as best practice so I've replaced them with +. However if I encoded my & instead it would become %26. How would a search engine see that? Would it see %26 as a & so still bring back the URL or would it just see it as a %26? ie. Would www.example.com/sweet?m&m show as that, or would they see it as www.example.com/sweet?m%26m

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• Multiple Google Analytics code for url under same domain

  - by will.i.am

  I have one domain, www.example.com, and www.example.com/sales. the analytic code on both urls are different. so when i login to google account, it will show two separate analytic accounts. on www.example.com/sales, i have a banner linked back to www.example.com. i clicked that banners, and i am sure there are other people have clicked the banner as well. but when i check the analytic of www.example.com, i don't see any thing come from my example.com/sales. I assume analytic on both urls are working, but why it doesn't track the visit from /sales. any idea??

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• Unable to make Window transparent in Ubuntu 12.10

  - by Falguni Roy

  I have recently upgraded from ubuntu 12.04 LTS to 12.10 (x64). I used to have transparent window tittle bar using gconf-editor -> apps -> gwd. But in 12.10 editing the value isn't doing nothing. Also in ccsm many plugins such as: opacity, brightness, saturation, desktop cube and rotate cube are all gone. I love that transparent look very much and I want to get it back in 12.10. I'm using Nvidia 7200GS ; AMD Athlon 7750 ; 3GB Ram. Is there any way to get it working?

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• android game: how to approach mutliplayer

  - by willmer

  I'm making a single player game that is near completion, and I am already starting to think about giving the game multiplayer. The multiplayer would basically be finding someone to play against, likely in a waiting room or just have a match-making function, and then having a pokemon style battle between the people in real time. I think it would be relatively simple as I'm just sending information about each attack(move chosen and damage) and what it did back and forth, but I'm not sure what resources to consult for this. I am very new to Android/Java development and really just learning as I go. I have heard a bit about Skiller, but I'm still unfamiliar with using other SDK's and how easy it may be. Does anyone have any suggestions as to what SDK's or methods for accomplishing this. I currently have no money to spend on software development, but I'd like to get started on learning how to do this.

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