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• Where can I find video and audio drivers for my netbook?

  - by Ari

  I got a little netbook yesterday (an Acer Aspire One) for schoolwork and read in numerous reviews Ubuntu was a must. I dove into it blindly and downloaded 12.04 LTS and though I admit it's faster than before, I have no idea how it works yet and was stupid enough to get rid of the Windows 7 Starter that was on there before completely. I can see myself getting used to the rest of Ubuntu, but the main issue is that it seems to have eaten all of my drivers and I don't know where to get any Ubuntu compatible ones. Any video at all is jilty and kind of creepy and any audio is very distorted and REALLY creepy. I understand that this is a tiny $150 typing and light web use school device I'm talking about, but I feel really stupid making the poor thing worse than it was before and not knowing what to do about it. Does anyone know how to install graphics/sound drivers? Or, alternatively, does anyone know where I can get a copy of Windows 7 Starter. I can see myself liking this if the problems are fixable, but if not I still have the product key and would be able to tackle the problem by myself with that.

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• LibGdx efficient data saving/loading?

  - by grimrader22

  Currently, my LibGDX game consists of a 512 x 512 map of Tiles and entities such as players and monsters. I am wondering how to efficiently save and load the data of my levels. At the moment I am using JSON serialization for each class I want to save. I implement the Json.Serializable interface for all of these classes and write only the variables that are necessary. So my map consists of 512 x 512 tiles, that's 260,000 tiles. Each tile on the map consists of a Tile object, which points to some final Tile object like a GRASS_TILE or a STONE_TILE. When I serialize each level tile, the final Tile that it points to is re-serialized over and over again, so if I have 100 Tiles all pointing to GRASS_TILE, the data of GRASS_TILE is written 100 times over. When I go to load/deserialize my objects, 100 GrassTile objects are created, but they are each their own object. They no longer point to the final tile object. I feel like this reading/writing files very slow. If I were to abandon JSON serialization, to my knowledge my next best option would be saving the level data to a sql database. Unless there is a way to speed up serializing/deserializing 260,000 tiles I may have to do this. Is this a good idea? Could I really write that many tiles to the database efficiently? To sum all this up, I am trying to save my levels using JSON serialization, but it is VERY slow. What other options do I have for saving the data of so many tiles. I also must note that the JSON serialization is not slow on a PC, it is only VERY slow on a mobile device. Since file writing/reading is so slow on mobile devices, what can I do?

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• IPsec Policy Agent flip-flopping demand start/auto start in Windows Server 2008?

  - by Steve Wortham

  Looking through the event logs on my web server I noticed a strange pattern. The following events have been occurring over and over again, always back to back: The start type of the IPsec Policy Agent service was changed from demand start to auto start. The start type of the IPsec Policy Agent service was changed from auto start to demand start. Each one produces event id 7040 from the Service Control Manager. And sometimes this will happen 20 times in one minute. Any idea what would cause this? I've been trying to pinpoint an intermittent performance problem for the past several days and this is the most peculiar thing I've found so far. I'm running Windows Server 2008, SQL Server 2008, and ASP.NET 3.5 w/ MVC 1.

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• My search what the Cloud will mean for my Work

  - by Kay Sellenrode

  Since I finished my MCM Exchange 2007 training back in April 2009 I’m struggling with the Cloud. I know it will change the way we do things today, but how will it affect my work. My work is Exchange consultancy mostly in the Netherlands, but more and more across the globe.   In my job as a consultant I noticed last year that a large percentage of my customers showed interest in the cloud services available today. But in most situations it seemed that it wasn’t the right time for them to switch to a cloud service at this moment. Right now I’m helping one of my customers is exploring Exchange online and it looks like they will switch over from their on-premise Exchange solution. This made me more than ever realize that I need to do something to not miss the boat.     With Office 365 coming this year, my idea is that Cloud services will take off from now. Also I’m sure that quite some customers will expect me to help them with their decision between the cloud and the on premise solution. So in the next months I will explore all the possibilities of Office 365, but also some of the competition in this field.   In my search for what the cloud will mean for me and my customers, I will go over all the aspects of the offered solutions. Any help in my search is always welcome. I’m looking forward to ideas people have around the cloud and how it will change the IT environment, especially in the Unified communications field.   Next week I will post my first article about my experiences with the cloud until now.

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• Decoupling software components via naming convention

  - by csteinmueller

  I'm currently evaluating alternatives to refactor a drivermanagement. In my multitier architecture I have Baseclass DAL.Device //my entity Interfaces BL.IDriver //handles the dataprocessing between application and device BL.IDriverCreator //creates an IDriver from a Device BL.IDriverFactory //handles the driver creation requests Every specialization of Device has a corresponding IDriver implementation and a corresponding IDriverCreator implementation. At the moment the mapping is fix via a type check within the business layer / DriverFactory. That means every new driver needs a) changing code within the DriverFactory and b) referencing the new IDriver implementation / assembly. On a customers point of view that means, every new driver, used or not, needs a complex revalidation of their hardware environment, because it's a critical process. My first inspiration was to use a caliburn micro like nameconvention see Caliburn.Micro: Xaml Made Easy BL.RestDriver BL.RestDriverCreator DAL.RestDevice After receiving the RestDevicewithin the IDriverFactory I can load all driver dlls via reflection and do a namesplitting/comparing (extracting the xx from xxDriverCreator and xxDevice) Another idea would be a custom attribute (which also leads to comparing strings). My question: is that a good approach above layer borders? If not, what would be a good approach?

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• links for 2011-02-02

  - by Bob Rhubart

  Oracle WebLogic's YouTube Channel Tired of reading? Watch and learn.  (tags: oracle weblogic youtube) Chris Muir: JDev: ADF BC and ADF Libraries: The Library Private property Oracle ACE Director Chris Muir illustrates the use of ADF Libraries. (tags: oracle otn oracleace) Satyajith Nair: Starting a SOA Project? Don't forget the Service Registry!! Satyajith Nair argues that "even with small projects, adding a Service Registry in the architecture has significant benefits with regards to Developer Productivity, Build Quality, Ease of maintenance and Architecture Flexibility." (tags: oracle infosys soa serviceregistry soagovernance) Matthias Wessendorf: Weblog Apache MyFaces in the cloud - Part II Matthias Wessendorf says: "A few days ago I did a quick test to see how well Apache MyFaces works in the cloud. The Amazon Beanstalk test was a success." (tags: oracle apache cloud) SOA & E2.0 Partner Community Forum - registration is open! (SOA Partner Community Blog) Jurgen Kress with an update on next month's event in the Netherlands. (tags: oracle otn soa enterprise2.0) Well Hello There, WebCenter PS3 VM | The AppsLab Jake Kuramoto says: "You may recall my struggle last year to assemble and document a WebCenter VM. Well, apparently other people thought it was a good idea..." (tags: oracle otn enterprise2.0 webcenter) InfoQ: Proving the Business Value of SOA Anne Thomas Manes discusses SOA goals and objectives used to measure a system’s success, measuring the business value, SOA project metrics, and recommendations on proving the business value of SOA. (tags: ping.fm) InfoQ: Amazon Will Offer Oracle Database 11g on RDS Amazon will offer Oracle Database 11g on RDS which brings patching, backup, replication, and failover support to Oracle’s database. (tags: ping.fm)

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• Refactoring this code that produces a reverse-lookup hash from another hash

  - by Frank Joseph Mattia

  This code is based on the idea of a Form Object http://blog.codeclimate.com/blog/2012/10/17/7-ways-to-decompose-fat-activerecord-models/ (see #3 if unfamiliar with the concept). My actual code in question may be found here: https://gist.github.com/frankjmattia/82a9945f30bde29eba88 The code takes a hash of objects/attributes and creates a reverse lookup hash to keep track of their delegations to do this. delegate :first_name, :email, to: :user, prefix: true But I am manually creating the delegations from a hash like this: DELEGATIONS = { user: [ :first_name, :email ] } At runtime when I want to look up the translated attribute names for the objects, all I have to go on are the delegated/prefixed (have to use a prefix to avoid naming collisions) attribute names like :user_first_name which aren't in sync with the rails i18n way of doing it: en: activerecord: attributes: user: email: 'Email Address' The code I have take the above delegations hash and turns it into a lookup table so when I override human_attribute_name I can get back the original attribute name and its class. Then I send #human_attribute_name to the original class with the original attribute name as its argument. The code I've come up with works but it is ugly to say the least. I've never really used #inject so this was a crash course for me and am quite unsure if this code effective way of solving my problem. Could someone recommend a simpler solution that does not require a reverse lookup table or does that seem like the right way to go? Thanks, - FJM

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• What is causing my newly built PC with Windows 7 to BSOD?

  - by Ben S

  I recently built my own PC from parts and installed Windows 7 and I have been getting BSODs with various different stop codes. The latest was 0x24, but I've also had 0xd1 and 0x1e. However, Windows does not let me know where the fault occurred, so I have no idea how to go about resolving this. I know the cause is likely a hardware driver, but I don't know which and cannot find information about how to use the minidumps to troubleshoot my problem. I've uploaded the last three minidumps in case someone can make sense out of them and let me know what could be causing my BSODs. Thanks, Ben

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• RTFMobile

  - by ultan o'broin

  It may seem obvious but it’s worth stating again. The idea that mobile users are going to read lots of user assistance on their devices is just wrong. So, Jakob Nielsen’s post Mobile Content Is Twice as Difficult serves as a timely reminder for anyone thinking of putting manuals as a form of user assistance onto mobile phones. There is also an excellent post on UXMag.com, explaining that one of the ways to screw up with your iPhone app is to throw an old-style user manual into the user experience: 10 Surefire Ways to Screw Up Your iPhone App.   (Image copyright and referenced from UX Magazine 2010)   Instead, user assistance  alternatives—if any at all—include one-time tours, graphics, in-context instructions, and so on. Not so sure that importing “humor” and “personality” work so well in the enterprise app space, myself. However, the message is clear: iPhone users don’t read manuals. Great message. Users will figure it out, and if they can’t, well then your app’s UX is a problem and the app will fail. Shame some teams are obsessed with figuring out ways to port existing manuals to mobile platforms without any thought for the UX. Razorfish’s Scatter/Gather blog says it all: One thing that is particularly discouraging, most material currently available on “Creating Content for the iPad” or similar themes turns out to be about getting traditional content onto, or into, the iPad. Now, manuals for non-end users in PDF format on eReaders is a different matter. I have research on that, but it’s for another post. Technorati Tags: mobile,user assistance,UX,user experience,manuals,documentation

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• Auto Save and Auto Load Game onto the Device's Storage Concept Question

  - by David Dimalanta

  I'm trying to make a simple app that will test the save and load state. Is it a good idea to make an app that has an auto save and load game feature only every time the newbies open the first app then continues it on the other day? I tried making a sprite that is moving, starting at the center. When I close and re-open the app, the sprite goes back to the center instead of the last coordinate where the sprite land on this part (i.e. at the top). The thing I want to know how the sequence of saving and loading goes like this: I open the app The starting sprite at the center. It displays a coordinate of the sprite plus number of times does the sprite move. I exit the app that automatically saves the game without notice. Finally, when I re-opened it, it automatically loads the game retaining the number of times the sprite move, coordinates, and the sprite's area landed. These steps above are similar, but not the sprite movement test app, to the sequence of saving and loading the game's level and record in Jewel Stackers for the Android app. And, by default, if there is no SD card in any tab or phone that runs on Android, does it automatically save/load onto the internal drive or the APK file itself? Is it also useful to use auto save and auto load feature for protecting and fetching informations (i.e. fastest time, last time where the sprite is located via coordinates, etc.)?

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• how can I fix error: hd0 out of disk?

  - by rux

  I am running Ubuntu 12.04 on a netbook - Acer AS 1410. After a download session, I restarted the computer and it said: error: hd0 out of disk. Press any key to continue... I pressed everything, but it's just frozen there. Any idea what's wrong with it and what I can do to fix it? I haven't been able to run my computer at all since it's frozen like that. Help please! I booted the live cd and ran sudo fdisk -lu into terminal, and here's what it gave me: Disk /dev/sda: 60.0 GB, 60022480896 bytes 255 heads, 63 sectors/track, 7297 cylinders, total 117231408 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x9a696263 Device Boot Start End Blocks Id System /dev/sda3 2048 117229567 58613760 5 Extended /dev/sda5 * 71647232 109039615 18696192 83 Linux /dev/sda6 109041664 117229567 4093952 82 Linux swap / Solaris /dev/sda7 4096 71645183 35820544 83 Linux Partition table entries are not in disk order I am somewhat of a beginner in this, so don't know what this means. any ideas? Thanks!

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• Team Foundation Server 2010 and Sharepoint/WSS3.0

  - by Liam

  As I'm new to Team Foundation Server, this may seem a bit of a daft question but I have been tasked with installing TFS2010. What I want to know is, do I have to have a full version of MOSS 2007 installed to build a project dashboard for TFS or can I get away with just using WSS 3.0 that comes with TFS? Having looked through the docs for TFS, I get the idea that I have to have a full Sharepoint installation somewhere. Though I'd like this to be clarified if possible. Thanks in advance.

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• External routing for local interfaces in a virtualized network

  - by Arkaitz Jimenez

  Current setup: br0| |-- tun10 -pipe-tun0(192.240.240.1) |-- tun11 -pipe-tun1(192.240.240.2) |-- tun12 -pipe-tun2(192.240.240.3) The pipe program is a custom program that forwards data back2back between two tun interfaces. The idea is puting 2 programs in .2 and .3 while keeping .1 as the local interface in the current machine. The main problem is that I want to route packets to .2 and to .3 through .1 and br0, but as they are local interfaces, the kernel ignores any routing instruction, it just delivers the packet to the proper interface. Tried iptables, but the nat table doesn't even see ping packets to those ifaces. A "ping 192.240.240.2" delivers a icmp packet with source and dest .2 to tun1, ideally it should deliver a source .1 dest .2 at tun1 through tun0-br0-tun1 Any hint? Here the output of some commands: Output

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• tag structured Filesystems

  - by A.Rashad

  I hope this is the correct site, I lose my way between the 4 sister sites :) Let me ask the question this way. all file systems I have seen before are hierarchical, that means a root directory, with some branched directories, and so on until we have files residing in these directories. except for AS/400 file structure, where it has a concept of a Library that serve somehow as a directory but one level only. Why not have directory-less filesystems where files are placed in a single location, but the file identifiers would be referenced by a database of tag/ file relation ships. This way there will be no need for symbolic links, one file may have multiple relations to multiple subjects, not only a single parent directory to contain. I hope the idea is clear.

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• Remote login/access on windows

  - by acidzombie24

  Hi I was wondering what software I can use to access my and other machines remotely? I used ssh which is nice but i don't know how it would be like on windows. (I assume its the same idea but windows console instead of a bash terminal?) Windows has a lot of applications that require GUI/MouseClicks. Actually I don't know a single ssh or vpn command line installer not that i'm complaining (but is helpful if you can mention some). I haven't use a VPN, is this taking control of a users screen/session? Or is it another instance/session as if you logged in as a different user on that box? What solutions are at my disposal for windows? (7)

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• lower-case 'c' key not working in bash

  - by gavin

  This is a bit of a strange one. I'm running Ubuntu 12.04. It's been working well but today, I ran into a hell of strange phenomenon. I can no longer type a lower-case 'c' in bash. At first I thought it was a misconfiguration for the gnome terminal but I tried both a stock xterm and directly at the console (ctrl+alt+F1) and the issue was the same. I can type an upper-case C without any difficulty and I can type lower-case 'c' in any other terminal based program (vim, bash, less, etc.). The lower 'c' also works if I jump into plain old sh. I looked at all the configuration files I know of and haven't found anything incriminating in there. I suspect it's not going to be that simple anyway because if I run bash with the '--norc' option from within sh, the problem remains. I don't know what else to check. In fact, if I wanted to cause this problem on a given machine, I have no idea how it could be done. Total mystery.

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• Laptop Suggestions and Alternatives [closed]

  - by Pennf0lio

  Hi, I need some suggestions and alternatives in buying laptops. Me and my Girlfriend are planning to buy laptops. Her budget is $600 and mine is $850. We both love apple products, because of it's elegant design and yet powerful. But we can't yet afford mac laptops.. so we are looking for alternatives. One we see is The Stylish Sony E-Series (white version) see it here. To give you an Idea, Software she frequently use are Photoshop, MS Office and firefox. Mine is Adobe CS4, Cinema4d, MS Office and firefox. We are looking for light, slick and clean interface of a laptop (very close to mac notebooks). Thanks!

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• Swapping from NHibernate to Entity Framework &ndash; Sanity Check

  - by DesigningCode

  Now I’m not an expert in either of these techs.  I have a nice framework for unit of work / repository built with NHibernate.  Works pretty well.  I use FluentNhibernate to do the mappings.  Works well.  Takes very little code to get going with a DB back OO model. So why swap? Linq.  In Entity Framework you get much better linq support.  Visibility. I have no idea what's really happening with NHibernate….its a cloud of mystery most of the time.  You have to read all the blogs, mailing lists, etc to know what's going on. So, EF 4.0 looks like pretty good….  it has reasonably good support for mapping POCOs.  Wrapping UnitOfWork and Repository around it seems ok. Only thing I haven’t liked too much is having to explicitly load lazy loading entities. So…. am I sane?  is EF the way to go?  or is NHibernate going to suddenly release the next generation of coolness?  Is there any other major gotchas of using EF over NHibernate?

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• Raid 5 GPT Partitioning

  - by user39325

  Hi, i have a Dell Poweredge r710 server with five 1 TB disks. All of them are in RAID 5. I was trying to install Centos but it sais "Your boot partition is on disk using GPT Partition...". I read somewhere that centos cant install on 2TB disk, so i made some partiotions smaller, but it's not workin. any idea? p.s. i am going to install Proxmox on that, but Proxmox same doesnt accept 2TB disks...

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• Battery in Macbook Pro 15" i5

  - by Graniti

  Hi I just purchased a new Macbook Pro (2,4GHz i5 320Gb) but the battery lasts about 5h and I was not doing anything more than browsing with WI-FI and editing text files. In the specification says that it should last 8-9 h. Does anybody have any idea if I could return the laptop with the reason that I am not satisfied? Is it enough? Anybody had any similar experience? I do not know if it matters but I bought it from a Apple Premium Reseller shop. Thanx, Granit

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• msi netbook refuses to connect to home wireless network (windows xp)

  - by sa125

  Hi - I'm trying to connect my girlfriend's MSI netbook to the wireless network in my house, and failing repeatedly. It's not a hardware issue, b/c it connects to other networks successfully, and, it's not a network issue, because I have another mac and linux laptops that have no problem detecting and connecting to the same network. When I open windows' network connections box, I can see the network available, and when I try to connect to it (using a password), I get a "network no longer in range.." error (the router is 2 ft away). This has been the case for the past 6 months, and I'm about to give up. I've reset the router, erased all saved network preferences and pretty much all I could think of short of re-installing XP. Any idea what else could be done? thanks.

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• How to account for speed of the vehicle when shooting shells from it?

  - by John Murdoch

  I'm developing a simple 3D ship game using libgdx and bullet. When a user taps the mouse I create a new shell object and send it in the direction of the mouse click. However, if the user has tapped the mouse in the direction where the ship is currently moving, the ship catches up to the shells very quickly and can sometimes even get hit by them - simply because the speed of shells and the ship are quite comparable. I think I need to account for ship speed when generating the initial impulse for the shells, and I tried doing that (see "new line added"), but I cannot figure out if what I'm doing is the proper way and if yes, how to calculate the correct coefficient. public void createShell(Vector3 origin, Vector3 direction, Vector3 platformVelocity, float velocity) { long shellId = System.currentTimeMillis(); // hack ShellState state = getState().createShellState(shellId, origin.x, origin.y, origin.z); ShellEntity entity = EntityFactory.getInstance().createShellEntity(shellId, state); add(entity); entity.getBody().applyCentralImpulse(platformVelocity.mul(velocity * 0.02f)); // new line added, to compensate for the moving platform, no idea how to calculate proper coefficient entity.getBody().applyCentralImpulse(direction.nor().mul(velocity)); } private final Vector3 v3 = new Vector3(); public void shootGun(Vector3 direction) { Vector3 shipVelocity = world.getShipEntities().get(id).getBody().getLinearVelocity(); world.getState().getShipStates().get(id).transform.getTranslation(v3); // current location of our ship v3.add(direction.nor().mul(10.0f)); // hack; this is to avoid shell immediately impacting the ship that it got shot out from world.createShell(v3, direction, shipVelocity, 500); }

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• Any language where every class instance is a class too?

  - by Dokkat

  Taking inspiration from Javascript prototypes, I had the idea of a language where every instance can be used as a class. Before I potentially reinvent the wheel, I would like to ask if there is a language already using this concept: //To declare a Class, extend the base class (in this case, Type) Type(Weapon,{price:0}); //Same syntax to inherit; simply extend the parent: Weapon(Sword,{price:3}); Weapon(Axe,{price:4}); Sword(Katana,{price:7}); Sword(Dagger,{price:3}); //And the same to create an instance: Katana(myKatana,{nickname:"Leon"}); myKatana.price; // 7 myKatana.nickname; // Leon // An operator to return children of a class; Sword_; // [Katana, Dagger] // An operator to return array of descendants; Sword__; // [Katana, Dagger, myKatana] // An operator to return array of parents; Sword^; // Weapon // Arrays can be used as elements Sword__.price += 1; //increases price of Sword's descendants by 1 mySword.price; //8 // And to access specific element (using its name instead of index) var name = "mySword" Katana_[name]; // [mySword] Katana_[name].nickname; // Leon Has this kind of approach been already studied/implemented?

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• Which tool do you use for tracking daily/weekly progress on your long-term goals?

  - by NoCatharsis

  I read through this post and this post to get an idea of short-term task management applications out there. However, now I'm having a problem tracking my longer-term goals pertaining to things like career, education, and exercise. I just discovered Disciplanner which might meet my needs but haven't had time to set it up just yet. Not to mention, it took me about 2 weeks of playing with every online to-do list app I could find before I came to a decision on which to use. I'm very particular about my tasks and goal-setting, so I would prefer to get some advice from other superusers before diving into the web again to find another life-management website.

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• Styles of games that work at low-resolution

  - by Brendan Long

  I'm taking a class on compilers, and the goal is to write a compiler for Meggy Jr devices (Arduino). The goal is just to make a simple compilers with loops and variables and stuff. Obviously, that's lame, so the "real goal" is to make an impressive game on the device. The problem is that it only has 64 pixels to work with (technically 72, but the top 8 are single-color and not part of the main display, so they're really only useful for displaying things like money). My problem is thinking of something to do on a device that small. It doesn't really matter if it's original, but it can't be something that's already available. My first idea was "snake", but that comes with the SDK. Same with a side-scrolling shooter. Remaining ideas include a tower defense game (hard to write, hard to control), an RPG (same), tetris (lame).. The problem is that all of the games I like require a high-resolution screen because they have a lot of text. Even a really simple game like nethack would be hard because each creature would be a single color. tl;dr What styles of games require a. No text; and b. Few enough objects that representing them each with a single color is acceptable? EDIT: To clarify, the display is 8x8 for a total of 64 pixels, not 64x64.

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