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• How to xkill an application by its id?

  - by Hanynowsky

  I need to simulate the behavior of the keyboard shortcut (ALT+F4) using Terminal for a given application. If I open for example gedit and click ALT + F4 , then GEDIT will be xkilled. If I want to achieve same thing using Terminal, how should I proceed? The command export PIDTOKILL=pidof gedit | grep [^*]; xkill -id $PIDTOKILL does not work and gives the following error: xkill: killing creator of resource 0x3f38 X Error of failed request: BadValue (integer parameter out of range for operation) Major opcode of failed request: 113 (X_KillClient) Value in failed request: 0x3f38 Serial number of failed request: 8 Current serial number in output stream: 9 I think I am confusing application id and process id here

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• Is there any benefit to obsession with making code "look pretty"?

  - by TaylorOtwell

  Sometimes I spend ridiculous amounts of time (hours) agonizing over making code "look pretty". I mean making things look symmetrical. I will actually rapidly scroll through an entire class to see if anything jumps out as not looking "pretty" or "clean". Am I wasting my time? Is there any value in this kind of behavior? Sometimes the functionality or design of the code won't even change, I'll just re-structure it so it looks nicer. Am I just being totally OCD or is there some benefit hidden in this?

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• Color distortion with Intel HD4000 over HDMI output - VGA is fine

  - by Simon Möller

  I set up a new system with i5 3570k gigabyte z77 d3h using integrated graphics (HD4000) and I've installed the 64bit Desktop version of 12.04. Connected to my Acer Screen via HDMI, the colors are horribly distorted. I think the biggest issue is that black appears as greenish. Over VGA everything is fine. Interestingly, I once observed that connecting both, the VGA and the HDMI cable at the same time, solved the issue. Ubuntu thought 2 screens were connected, I mirrored the image, and over HDMI the colors looked fine. However, after a reboot I am now unable to reproduce this behavior. I read frequently, that Intel hardware should be supported out of the box by Ubuntu but it doesn't seem to be the case here. Should I upgrade my Kernel? If so, which version would you recommend? Thank you for your answers!

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• Faking Display tree (Sprite) parent child relationships with rasters (BitmapData) in ActionScript 3

  - by Arthur Wulf White

  I am working with Rasters (bitmapData) and blliting (copypixels) in a 2d-game in actionscript 3. I like how you can move a sprite and it moves all it's children, and you can simultaneously move the children creating an interesting visual effect. I do not want to use rotation or scaling however cause I do not know how that can be done without hampering with performance. So I'm not simulating Sprite parent-child behavior and sticking to the movement on the (x, y) axis. What I am planning to do is create a class called RasterContainer which extends bitmapData that has a vector of children of type Raster(extending bitmapData), now I am planning to implement recursive rendering in RasterContainer, that basically copyPixels every child, only changing their (x, y) offset to reflect their parent's offset. My question is, has this been implemented in an existing framework? Is this a good plan? Do I expect a serious performance hit for using recursive methods this way?

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• Canon Pixma MP150 printer stops before the job is done

  - by aserwin

  I have a Canon Pixma MP150. It's old but it still works well. The problem is that since I have been running Ubuntu 12.04 the printer exhibits odd behavior. Usually right at the end of a job, it will stop. The printing is done, but the printer is still "working" and it won't release the paper. If I pull it out and test the printer, it will start over and print the same job. Once I just let it be and about an hour or so later it finished with no problems. My question is, could the be an issue with the printer (it is old) or is it the drivers in Ubuntu? Any advice (or suggestions on debugging) would be greatly appreciated as I print a lot and don't really want to buy a new printer.

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• How can I obtain in-game data from Warcraft 3 from an external process?

  - by Slav

  I am implementing a behavior algorithm and would like to test it with my lovely Warcraft III game to watch how it will fight against real players. The problem I'm having is that I don't know how to obtain information about in-game state (units, structures, environment, etc.) from the running WC3 game. My algorithm needs access to the hard drive and possibly distributed computing, that's why JASS (WC3's editor language) isn't appropriate; I need to run my algorithm from a separate process. Direct3D hooking is an approach, but it wasn't done for WC3 yet and a significant drawback of that approach would be the inability to watch how the AI performs online, since it uses the viewport to issue commands. How I read in-game data from WC3 in a different process in a fastest and easiest way?

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• How to run ubuntu-tweak's janitor automatically?

  - by Eliran Malka

  My aim is to have the janitor running at startup, with a pre-configured profile (e.g. clear redundant packages and browser cache). The website is lacking any documentation or usage instructions, and I could not find any information on this here as well. I tried, naturally, to start ubuntu-tweak from the command line, hoping additional API exists that will come through in this (allegedly) simple task. I only got as far as: ubuntu-tweak -f janitor which is a step in the right direction, but what's still missing is a command for the clear action. Is such a command available, or is there any better way of achieving the desired behavior?

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• Possible / How to render to multiple back buffers, using one as a shader resource when rendering to the other, and vice versa?

  - by Raptormeat

  I'm making a game in Direct3D10. For several of my rendering passes, I need to change the behavior of the pass depending on what is already rendered on the back buffer. (For example, I'd like to do some custom blending- when the destination color is dark, do one thing; when it is light, do another). It looks like I'll need to create multiple render targets and render back and forth between them. What's the best way to do this? Create my own render textures, use them, and then copy the final result into the back buffer. Create multiple back buffers, render between them, and then present the last one that was rendered to. Create one render texture, and one back buffer, render between them, and just ensure that the back buffer is the final target rendered to I'm not sure which of these is possible, and if there are any performance issues that aren't obvious. Clearly my preference would be to have 2 rather than 3 default render targets, if possible.

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• Hide GRUB2 menu UNLESS you hold down Shift key: how to make this happen?

  - by Shasteriskt

  I have a Ubuntu - Windows 7 dual-boot set-up, and I would like to have it that my laptop would boot up Windows 7 unless I press down the Shift key right after boot and bring up the Grub2 menu from which I can choose Ubuntu. I researched on Grub2 and options for etc/default/grub and I have tried playing around with combinations with the GRUB_TIMEOUT and GRUB_HIDDEN_TIMEOUT values, but to no avail. I tried setting the GRUB_HIDDEN_TIMEOUT higher than the GRUB_TIMEOUT thinking that both countdown start simultaneously, but no - GRUB_TIMEOUT only starts after the other is done. Is this behavior achievable? If so, how?

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• If you had the power to remove one thing in your daily job, what would it be?

  - by Pierre 303

  With nearly 60 answers to this question it's highly likely that your answer has already been posted. Please don't post an answer unless you have something new to say This can be a particular task you find not very useful, a manager behavior, your canteen, some security rule you must comply to, tools they want you to use, commuting, schedules, a customer, a technical problem you encouter all the time, anything, ... please be creative ;) One answer per thing. Explain why. Please vote up on other answers if appropriate.

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• Do you use ReSharper full time, or only enable it when needed?

  - by gorohoroh

  Based on a multitude of questions related to temporarily disabling ReSharper, and also on certain research data, I can see that a considerable share of ReSharper users have it disabled most of the time. They tend to enable it for a limited period of time (say, several hours), do whatever they need to do using its functionality, and disable it back until the next time they feel they need to use it. If you're using ReSharper (or other similar VS extensions, to that matter) in such occasional manner, can you clarify why you're doing this? Is your behavior based on performance, or other considerations? What kinds of tasks do you enable ReSharper for in this scenario?

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• June 14th Webcast: Using Personalization in Oracle eAM

  - by Oracle_EBS

  ADVISOR WEBCAST: Using Personalization in Oracle eAMPRODUCT FAMILY: Enterprise Asset Management June 14, 2012 at 11 am ET, 9 am MT, 8 am PT Personalization is the ability within an E-Business Suite instance to make changes to the look and behavior of OA Framework-based pages without programming (and, therefore, upgradeable!).TOPICS WILL INCLUDE: Oracle eAM customers have leveraged Personalization to address many of the following use cases: making a non-mandatory field mandatory on a Work Order adding a new field to the header region entering the specifications for a new field disabling a field to prevent user entry adding Asset Description to Create Work Request Page viewing Asset Hierarchy in Create Work Request Page setting Auto Request Material Flag to yes by default A short, live demonstration (only if applicable) and question and answer period will be included. Oracle Advisor Webcasts are dedicated to building your awareness around our products and services. This session does not replace offerings from Oracle Global Support Services. Current Schedule can be found on Note 740966.1 Post Presentation Recordings can be found on Note 740964.1

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• How to deal with users who think their computer could think?

  - by DavRob60

  Along my career, I had to deal with users who think their computer could think: My computer hates me! or He just do this so he could laugh at me! This is often a joke, but some users are serious. It's easy when I know the causes of the problem, but when it's unexpected behavior it's more complicated. In those cases, I usually turn it as a joke, putting that on the fault of moon phases and tide, but they are likely to prefer their explanations. Do you have any tricks to deal with those users?

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• OpenStack + Ubuntu 12.04

  - by csgeek

  Supposedly openstack can be installed easily under Ubuntu 12.04 LTS. I've installed 32 and 64bit versions of Ubuntu Server with the same behavior. sudo tasksel check OpenStack hit Okay then I get a tasksel: aptitude failed (100) I've seen: http://www.hastexo.com/resources/docs/installing-openstack-essex-20121-ubuntu-1204-precise-pangolin and https://github.com/EmilienM/doc-openstack documentation, but I was hoping that since it was an LTS released and it was an option in tasksel that I was simply overlooking something obvious and it's just a matter of selecting the right checkbox and hitting okay. Too much wishful thinking?

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• Why can't dash search find a program by its full name?

  - by Peter De Maeyer

  For some applications, dash search comes up empty when searching by the application's full name. When typing the first couple of letters, it works. I wonder why... MuseScore is a fine example. When I search for "muse" in the dash search, MuseScore is found. When I search for "musescore", nothing is found. This behavior makes me distrustful of the dash search... I wonder how often it misses installed programs... I like to be able to trust the software tools I'm using.

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• Cheese Not Working in Ubuntu 11.10

  - by user34305

  When i launch Cheese, nothing launches nor the green light on may laptop webcam glows. I typed cheese in terminal and i got cheese:2293): Gdk-WARNING **: The program 'cheese' received an X Window System error. This probably reflects a bug in the program. The error was 'BadRequest (invalid request code or no such operation)'. (Details: serial 144 error_code 1 request_code 136 minor_code 19) (Note to programmers: normally, X errors are reported asynchronously; that is, you will receive the error a while after causing it. To debug your program, run it with the --sync command line option to change this behavior. You can then get a meaningful backtrace from your debugger if you break on the gdk_x_error() function.)

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• Detect Subscribers To Event In Real Time

  - by xyz247

  I'm using C++ in the QT framework to write an application that detects an application running in memory. I can use the FindWindow method, but that requires that I know the windows title before hand. What would be the best method for identifying behavior of the application in memory to match it to a title? For example, if I know (before scanning) that a given application subscribes to the OnKeyPress event, is it possible to hook to it that method, detect all of the subscribers and enumerate them to find the application i'm looking for? If so, how would I go about doing that without integrating into the kernel? Thanks in advance for all the responses.

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• Why not write all tests at once when doing TDD? [closed]

  - by RichK

  Possible Duplicate: Why not write all tests at once when doing TDD? The Red - Green - Refactor cycle for TDD is well established and accepted. We write one failing unit test and make it pass as simply as possible. What are the benefits to this approach over writing many failing unit tests for a class and make them all pass in one go. The test suite still protects you against writing incorrect code or making mistakes in the refactoring stage, and code coverage should be just as high, so what's the harm? Sometimes it's easier to write all the tests first as a form of 'brain dump' to quickly write down all the expected behavior in one go.

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• Ubuntu 12.04 fails to find Intel HD Graphics 3000

  - by user69785

  On my Windows 7 installation an Intel HD Graphics 3000 card/driver shows. However in Ubuntu 12.04, System ? Administration ? Hardware Drivers shows no proprietary drivers available for the system. I have tried running the following: sudo apt-get install mesa-utils Which results in the graphics driver incorrectly identifying itself as Sandy Bridge Mobile. Running the following results in no change sudo add-apt-repository ppa:xorg-edgers/ppa sudo apt-get update && sudo apt-get upgrade sudo reboot Does anybody have any information on this behavior?

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• Can exim be configured to send all emails externally?

  - by Tom Brossman

  How do I configure exim4 to route all emails via a third-party SMTP server when the sender's domain, recipient's domain, and server hostname all match? I followed this great answer and have exim4 sending emails to addresses at other domains tested and working from an Ubuntu server. My only issue is that emails where both the sender and recipient share the same domain as the server hostname, they never leave the server (and this is the expected behavior). For example, sending from [email protected] -- [email protected] works fine, but sending from [email protected] -- [email protected] just routes the mail locally to /var/mail/account2, without passing through the third-party SMTP server. I'm using Google Apps at my own domain and want to send emails from [email protected] to [email protected] from a machine with the hostname example.com. I want to route them through Google's SMTP server so I see them in my other email clients. Is this possible? Very similar questions (but for postfix) here and here.

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• Google I/O 2012 - Navigation in Android

  Google I/O 2012 - Navigation in Android Adam Powell, Richard Fulcher An app is useless if people can't find their way around it. Android introduced big navigation-support changes in 3.0 and 4.0. The Action Bar offers a convenient control for Up navigation, the Back key's behavior became more consistent within tasks, and the Recent Tasks UI got an overhaul. In this talk, we discuss how and why we got where we are today, how to think about navigation when designing your app's user experience, and how to write apps that offer effortless navigation in multiple Android versions. For all I/O 2012 sessions, go to developers.google.com From: GoogleDevelopers Views: 31 0 ratings Time: 01:01:53 More in Science & Technology

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• Logout or shutdown shows terminal

  - by N.N.

  When I logout or shutdown the terminal (the one I reach with Ctrl Alt + F7) is sometimes shown before the login screen appears or before the computer is shut off. Is there a way to stop this behavior? More explicitly. If I logout the terminal is sometimes shown for a second before the login screen appears. Also, sometimes when I shutdown (from within Unity or Gnome) the terminal is shown, sometimes for the whole shutdown process or just for a second or two. I've had this problem throughout 10.04, 10.10 and 11.04 and I've always used the standard Ubuntu variant. I've also noticed this happening on a fresh install of Natty on a friends netbook, so it's not local to my computers.

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• Program/Wrapper (how do you call it) to automate a certain script

  - by user10324

  In this question a script is provided, that minimizes all the other windows except the active one. But the thing is, to trigger this script a (shortcut) key-combination has to be pressed. I would love it, if it would be possible to automate this behavior, i.e. no matter what I do, only the active window is not minimized. This way I cannot view more then one open window at the same tine, which is what I'm after. Is it possible to write a script, that does this ? I a question I asked a while ago (where I learned about the above script), someone said, the proper way to do this, would be through a wrapper through which every program starts. I would also be very happy with a more sloppy solution, like activating this script 100 times per second (simulating pressing the shortcut combination a 100 times per second), if it is feasible - although I was warned, that that may not be a very good idea.

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• Dual monitor Unity launcher opening on wrong monitor in 11.10

  - by user26381

  I just upgraded to Oneiric and now the Unity Dash launcher is on my left screen. I really want it on my right screen. But how do I do that? Why do I want the Dash on my right screen? My left screen is a smaller older monitor that I use to read/watch documentation or keep my music player open. I work on my right screen, that is bigger and is a better monitor. I have an Nvidia card and in the nvidia settings it is setup that the right monitor is my primary monitor, but Oneiric doesn't follow this setting anymore. I thought this was a bug, but is seems to be intended behavior... https://bugs.launchpad.net/ubuntu/+source/unity/+bug/742544 Some poster in this thread explains that he "patched it locally", but I have no idea how to do this. Does somebody know how to do this? Or maybe there is another solution?

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• How do I implement a "sliding out of / into" effect on a settings menu similar to that in Angry Birds?

  - by VictorB

  I'm trying to implement a settings menu component similar to that in Angry Birds - a button control that makes an options menu slide out of it and back into it when clicked on. I use scene2d.ui to build the UI components: a Button in a Table to implement the button control, a Table to implement the options menu, and a Stack to lay these out one on top of the other and at this moment I have the following behavior: When the user hits the button control for the first time, then the alpha of the table component is set to 1; When the user hits the button control the second time, then the alpha of the table component is set to 0; And so on. Any ideas how I can get the sliding out of and into effect on user clicks with libgdx? Similar to what Angry Birds provides. Maybe using the TweenEngine, actions, interpolations, combinations of these? Thanks in advance.

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