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• Acer sound card

  - by Rob Brugh

  Hi I have an acer aspire on a recent upgrade somehow it loaded dummy output into upper memory so every time I boot up I have to manually load my sound card. using sudo /sbin/alsa reload then alsamixer and f6 to change to my proper sound card. How do I go about making that my default sound card loading on boot every time. sometimes the message comes up cannot find alsamixer, if that happens I have to run the following command sudo /sbin/alsa force-reload and then alsamixer. That works only on current session I would like to get that so it boots without coming up with dummy output. anyone out there know what the command is to make that load to boot section?

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• nicstat update - version 1.92

  - by user12608033

  Another minor nicstat release is now available. Changes for Version 1.92, October 2012 Common Added "-M" option to change throughput statistics to Mbps (Megabits per second). Suggestion from Darren Todd. Fixed bugs with printing extended parseable format (-xp) Fixed man page's description of extended parseable output. Solaris Fixed memory leak associated with g_getif_list Add 2nd argument to dladm_open() for Solaris 11.1 Modify nicstat.sh to handle Solaris 11.1 Linux Modify nicstat.sh to see "x86_64" cputype as "i386". All Linux binaries are built as 32-bit, so we do not need to differentiate these two cpu types. Availability nicstat source and binaries are available from sourceforge. History For more history on nicstat, see my earlier entry

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• mayavi2 installing has problem (ubuntu 12.04)

  - by user98865

  I'm using ubuntu 12.04 and python 2.7.3-0ubuntu2 is already installed. I have a problem during installing mayavi2 from ubuntu software center. Error message is : Package dependencies cannot be resolved This error could be caused by required additional software packages which are missing or not installable. Furthermore there could be a conflict between software packages which are not allowed to be installed at the same time. Details: The following packages have unmet dependencies mayavi2: Depends: python-numpy (= 1:1.6.1) but 1:1.6.1-6ubuntu1 is to be installed Depends: python-numpy-abi9 but it is a virtual package Depends: python (< 2.8) but 2.7.3-0ubuntu2 is to be installed Depends: python-vtk (= 5.4.2-5) but 5.8.0-5 is to be installed I've searched to solve this problem for a long time but I didn't solve yet. What can I do?

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• What language should an 11-year old start with to learn game programming?

  - by emsr

  I have a 11-year old son who wants to do game programming. I've started him on C++ (C++11) and he's learned iostreams, looping, functions, logic and flow control. I'm using the standard library and no memory management at all. But I would like to ask: What language would you suggest for a pre-teen (Python, ...)? What books would you suggest? We looked at one book that was just for console ASCII games. I liked the C++ that it taught but I think he'll get bored without some graphics at some point.

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• Size of an image imported with FreeImage

  - by KaiserJohaan

  I'm having abit of a brainfart and I can't quite grasp what I'm doing wrong. It's quite simple, I am importing an image with FreeImage (http://freeimage.sourceforge.net/) which has a method FreeImage_GetBits that returns a pointer to the first byte of the image data. I then try to load all the data into memory using (bitsperpixel / 8) * pixelsWidth ' pixelHeight, like this: uint32_t bitsPerPixel = FreeImage_GetBPP(bitmap); // resolves to 24 uint32_t widthInPixels = FreeImage_GetWidth(bitmap); // resolves to 1024 uint32_t heightInPixels = FreeImage_GetHeight(bitmap); // resolves to 1024 // container is a std::vector<uint8_t> pkgMaterial.mTextureData.insert(pkgMaterial.mTextureData.begin(), FreeImage_GetBits(bitmap), FreeImage_GetBits(bitmap) + ((bitsPerPixel/8) * widthInPixels * heightInPixels)); I have a jpg which is 31 kilobytes in size on disc. Yet when I load it using the above formula, I see the vector is then filled with 3145728 bytes, which is approx 3145 kilobytes. What am I doing wrong?

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• Getting trayer to work with dual screen setup

  - by Ikke

  I'm using XMonad as my window manager, and want to use trayer as a icon panel for things like nm-applet. The problem was that the panel wouldn't appear on the top of the screen. If I set it to the bottom it just appeared. After a lot of trying, I found out it is because my xorg.conf is setup for dualscreens, and probably the trayer panel is spawned outside my view (I currently have only a single screen, but I switch a lot). After manualy tweaking the xorg.conf file to allow for just one screen, the panel appears on the right spot. These are the things I had to modify: Section "Monitor" Identifier "0-LVDS" Option "VendorName" "ATI Proprietary Driver" Option "ModelName" "Generic Autodetecting Monitor" Option "DPMS" "true" Option "PreferredMode" "1366x768" Option "TargetRefresh" "60" Option "Position" "0 0" # Was 1280 256 Option "Rotate" "normal" Option "Disable" "false" EndSection SubSection "Display" Viewport 0 0 Virtual 1366 768 # Was 2646 2646 Depth 24 EndSubSection The problem is ofcourse that I can't use my dual screen setup anymore. Is there a way to force trayer on the right position even with the dualscreen setup?

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• How can I efficiently create/store/implement animations as I add to my game?

  - by nickbadal

  My game's characters are made up of different parts (head/body/legs/etc), and whatever items they have equipped. As I'm creating the animation system for my game, I want to try to anticipate a large number of combinations for different pieces for each character. Originally, I had planned on having a frame-by frame animation for each piece for each animation, and then layer them to combine them into a character, but this seems like it would be a lot of work for my artist, and that the memory/disk size would start to add up as well since we would need a sprite for every frame, of every customization of every piece, in every animation, for every character. What efficient ways are there to create/implement these animations as we add more and more configurations to our game?

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• How to implement custom texture formats in Android?

  - by random1337

  What I know: Android can load PNG, BMP, WEBP,... via BitmapFactory. What I want to achive: Load my own 2D file format (e.g. 1-bit texture with a 1-bit alpha channel) and output a RGBA8888 texture. Question: Is there any interface to achieve this?(or any other way) The resulting image is used as a texture for a 3D model. Why would you do that? Saving phone memory and download bandwidth while expanding the texture at runtime to RAM seems reasonable for very simple textures.

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• SAP : HANA débarque sur AWS, l'éditeur continue d'imaginer des offres pour démocratiser sa base de données en mémoire

  SAP HANA débarque sur Amazon Web Services L'éditeur continue d'imaginer des offres pour démocratiser sa base de données en mémoire Pour bénéficier de ? ou tester ? la base de données « in-memory » de SAP, plus besoin d'une appliance ou d'un serveur. L'éditeur Allemand vient en effet de certifier HANA à l'usage des développeurs sur Amazon Web Services. « SAP HANA One est disponible sur le marketplace d'AWS », annonce SAP. « Il est maintenant possible de faire fonctionner cette puissante base de données en mémoire sur AWS EC2 pour $ 0,99 de l'heure ». [IMG]http://ftp-developpez.com/gordon-fowler/SAP%20HANA.png[/IMG] Pour rappel, ...

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• Screen dims & freezes me out

  - by user287723

  New to Ubuntu 12.04 (used since 8th April). I have recently been using Firefox for an online course and while working on this virtual PC site, the screen dims and I am frozen out of interacting with my desktop. (I cannot switch to any other tabs in Firefox). Power setting set to suspend after 30 mins. The desktop is connected to the mains. Moving the cursor around appears to have no effect. This is making the course difficult to follow so any ideas would be appreciated. Thanks

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• Announcing Oracle WebLogic 12c

  - by alexismp

  While this blog is mostly devoted to GlassFish, you may be interested in the Oracle WebLogic Server 12c announcement scheduled for December 1st, 2011. The launch event is called "Introducing Oracle WebLogic Server 12c, the #1 Application Server Across Conventional and Cloud Environments" and will be split into Executive Overview and Developer Deep Dive sessions. The agenda description includes the following (emphasis is mine) : • Optimized to run your solutions for Java Platform, Enterprise Edition (Java EE); Oracle Fusion Middleware; and Oracle Fusion Applications • Enhanced with transformational platforms and technologies such as Java EE 6, Oracle’sActive GridLink for RAC, Oracle Traffic Director, and Oracle Virtual Assembly Builder On a slightly less official note but on that same topic, you should check out Steve Button's blog and twitter stream.

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• Issues with HP Mini 110-1125NR

  - by Guga Figueiredo

  Just finished installing Ubuntu 12.04 Precise Pangolin on my HP Mini 110-1125NR and im having small, but rather irritating issues. I installed it over the Windows 7 (starter) which came with the netbook. Firstly, it will only boot from the USB flashdisk. If i try to boot from the hardrive, it goes to a black screen. Second, built-in wireless wont activate. system says its enabled and on, but the light indicator is still orange (as if its off), and i cant get a signal from my home wi-fi I havent found any solved threads for inspiration, and mos of them are pretty old (1 year +) so i thought of giving a try to see if any of you guys System is: HP Mini 110-1100 1gb memory Intel Atom CPU N270 @ 1.60GHz x 2 Os - Precise Pangolin - Ubuntu 12.04 160gb Hard disk If any of you are aware of the solutions of my issues it'd be awesome Thanks in advance for any help!

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• How do I know if I've gone too far with processing things in a game?

  - by ThePlan

  A common programming quote I see every day is: Premature optimization is the root of all evil! I admit I'm one of those guys that like to do premature optimization in a pretty obssessive manner but that's probably because I'm not aware how powerful modern processors are. I can think of lots of sollutions for a problem, but all of them are tough on the memory side, and I keep thinking "This will hurt me more in the future when I'll have to re-do it because it's bad performance-wise." How do you know when the code you are thinking of is going too far and is not a case of premature optimization? How much can your game handle at a time before performance becomes a problem?

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• Is this a violation of the Liskov Substitution Principle?

  - by Paul T Davies

  Say we have a list of Task entities, and a ProjectTask sub type. Tasks can be closed at any time, except ProjectTasks which cannot be closed once they have a status of Started. The UI should ensure the option to close a started ProjectTask is never available, but some safeguards are present in the domain: public class Task { public Status Status { get; set; } public virtual void Close() { Status = Status.Closed; } } public ProjectTask : Task { public override void Close() { if (Status == Status.Started) throw new Exception("Cannot close a started Project Task"); base.Close(); } } Now when calling Close() on a Task, there is a chance the call will fail if it is a ProjectTask with the started status, when it wouldn't if it was a base Task. But this is the business requirements. It should fail. Can this be regarded as a violation?

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• Why is it good not to rely on changing state?

  - by Slomojo

  This question arises out of the question Is Haskell worth learning? Generally a few often repeated statements are made, about how Haskell improves your coding skills in other languages, and furthermore, this is because Haskell is stateless, and that's a good thing. Why? I've seen someone compare this to only typing with the left hand, or perhaps closing your eyes for a day and just relying on touch. Surely there is more to it than that? Does it relate to hardware memory access, or something else which is a big performance gain?

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• Ubuntu not mounted?

  - by z3matt

  In Live CD i went in the terminal and when i do 'sudo update-grub' it responds /usr/sbin/grub-probe: error: cannot find a device for / (is /dev mounted?). Here's the breakdown of my drive: sda1 - vfat - Windows 7: FAT32 sda2 - sda3 - nfs - Windows Vista/7: NTFS - Windows 7 sda3/Wubi: - sda4 - Grub2 sda5 - Ubuntu 12.04.1 LTS sda6 - sda7 - sda8 - BIOS Boot Partition Also at the top of the page it states : = No boot loader is installed in the MBR of /dev/sda Any and all help is appreciated and welcomed. When my computer boots, it goes into GRUB and has the options for Windows 7 and Windows Memory Test but no option for Ubuntu. I want to run a dual-boot through it.

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• Is it better to use a Database or a data structure for network stack?

  - by poly

  I've built a multi threaded messaging application in C and I'm currently using a MySQL Memory table to save the session ID, but I'm not sure whether this was a good decision or not. It works like this, the application sends a message and saves the source session ID in the MySQL table. When the application gets the success response it will remove the session's ID from the MySQL table, or if it received an error response then it will keep the ID to be retried later. I've built it this way so that I don't need to care about building a data structure by myself, and the Database provides flexibility when it comes to querying it. Do you think this is appropriate or do I need to use something else? Please note that the application is expecting to handle a large number of transactions/sec.

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• Ask the Readers: How Do You Share Your Photos?

  - by Jason Fitzpatrick

  It’s easy to snap away and fill up a memory card, but not quite as easy to share your best pics with your friends and family. How do you get your pics from your camera to your friends’ monitors? This week we’re interested in hearing about your favorite photo sharing tools and techniques. What’s your workflow for getting your photos from your digital camera to the virtual desktops of friends around the globe? Sound off in the comments with your favorite resources, applications, and photo sharing tricks. Make sure to check in on Friday for the What You Said roundup to see how your fellow readers get the job done. 8 Deadly Commands You Should Never Run on Linux 14 Special Google Searches That Show Instant Answers How To Create a Customized Windows 7 Installation Disc With Integrated Updates

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• Sound from Ubuntu Server 10.04

  - by emilyk

  I feel like this should be a no brainer, but I just can't seem to figure it out. I am running Ubuntu Server 10.04 as a virtual machine in VMWare Fusion. I am simply trying to get there to be some sound that comes out of my laptop speakers. I have installed Alsa and MOC (followed these instructions, and it worked fine http://howto.blbosti.com/2010/03/ubuntu-server-install-alsa-sound-and-moc-music-on-console/). Especially using MOC, I can see that the song (an MP3) is playing, but I am not getting any sound out. lspci | grep audio gives me: 02:02.0 Multimedia audio controller: Ensoniq ES1371 [AudioPCI-97] (rev 02) This doesn't seem like it should be that big of a deal, but I just can't seem to make it work. Any ideas?

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• What is the most secure environment for multiple CMS sites? [closed]

  - by Brian Gulino

  I wish to run about 50 Joomla or WordPress low-traffic websites on 1 server, or part of a server. Each website will be managed by its own, naive owner who will have be able to access the Joomla or Wordpress backend of the website. I am concerned about security and isolation as my users will periodically get into trouble by not protecting their sites properly. Two alternatives I know of exist: Run one Linux system with multiple websites under Apache. Follow current Joomla and WordPress security tips. Increase the isolation of the individual sites by using mpm-itk, which will allow each website to run as its own user. The alternative to this is to run virtualization software such as the Xen hypervisor. Each site would have its own, virtual Linux system. I lack the experience needed to make this decision and I am asking which path to take. Obviously, there may be other alternatives that I haven't considered.

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• Alternative ways to construct maps

  - by sideways8

  I've searched around and it seems like most people are using tile-based map systems. I suppose this question is more theoretical than practical (I am not very concerned about memory or performance speed), but I want to know: what other ways can a map be created in a game? A map being a graphic representation of terrain that can be navigated, has entrances and exits, and boundares (no-go zones). Besides using text files to store and arrays to load tile data, one idea I had was to store a map entirely as a graphic file and use queries on the pixel colour to determine boundaries (ie, you can only move in a certain direction if the way is bright enough in that direction). What other creative map systems are out there?

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• Amd athlon 6000+ kernel panic during installation

  - by usefreeit

  I am trying to install ubuntu 10.04 on my PC. I get flashing scrollock and capslock lights and error kernel panic here screen shot http://alexandrneverov.livejournal.com/pics/catalog/443/47342 Installation of 11.04 (x86_64 and i386) - get the same. 12.04 can't start installation process. If install system on other PC and then pick this hard with installed system in this PC - it works maybe 5 min and then frezze or reboot. What can i do to install ubuntu?? I have changed memory, video, atx, hard - no matter - it shuts down randomly, sometimes with this errors in image. What can i do to install ubuntu??

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• I need advice on how to debug a cluster

  - by alcor

  I'm the only developer of a complex critical software system, written in Visual C++ 2005. It's deployed on a classical Microsoft cluster scenario (active/passive), that has Windows Server 2003 R2. If a server A goes down, the other one (B) starts and take the ownership of its duties. You have to know that: both servers have the same Microsoft patches/fixes, same hardware, same everything. both servers use the same memory storage (a RAID-6 through fiber channel). this software has a main module who launch the peripheral modules. if a peripheral module crashes, the main module restarts it. When I switch the application in one of the two servers (let's say the B server) two of the peripheral modules of the main applications just started to crash apparently without reason about 2 seconds after the start of the peripheral module. What could I do to analyze/inspect/resolve this weird situation?

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• Java Thriving in Oracle's hands

  - by Tori Wieldt

  IDC has published a Technology Assessment of Oracle's stewardship of Java titled "The State of Java: Two and a Half Years After the Acquisition." The overall IDC opinion is that Java under Oracle's stewardship is thriving. Report highlights include: The successful delivery of Java SE 7, which had been stalled at Sun Microsystems Articulation of realistic road maps for Java EE 7 and Java SE 8 The healthy growth of the Java ecosystem The decisiveness with which Oracle handled the Apache Harmony dispute Key vendors joining the OpenJDK including IBM, Apple, and SAP More and more programming languages being hosted on the Java Virtual Machine(JVM) Java's role in major computing trends including Mobile, Cloud, Big Data and Social You can access the full report here (PDF).

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• Logic - Time measurement

  - by user73384

  To measure the following for tasks- Last execution time and maximum execution time for each task. CPU load/time consumed by each task over a defined period informed by application at run time. Maximum CPU load consumed by each task. Tasks have following characteristics- First task runs as background – Event information for entering only Second task - periodic – Event information for entering and exiting from task Third task is interrupt , can start any time – no information available from this task Forth task highest priority interrupt , can start any time – Event information for entering and exiting from task Should use least possible execution time and memory. 32bit increment timer available for time counting. Lets prepare and discuss the logic, It’s OK to have limitations …! Questions on understanding problem statement are welcome

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