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• AndEngine; Box2D - high speed body overlapping, prismatic joints

  - by Visher

  I'm trying to make good suspension for my car game, but I'm getting nervous of some problems with it. At the beginning, I've tried to make it out of one prismatic joint/revolute joint per one wheel only, but surprisingly prismatic joint that should only move in Y asix moves also in X axis, if car travels very fast, or even on low speeds if there's setContinuousPhysics = true. This causes wheels to "shift back", moving them away from axle. Now I've tried to add some bodies that will keep it in place: Suspension helper collides with spring only, wheel doesn't collide with spring&helper&vehicle body This is how I create those elements: rect = new Rectangle(1100, 1350, 200, 50, getVertexBufferObjectManager()); rect.setColor(Color.RED); scene.attachChild(rect); //rect.setRotation(90); Rectangle miniRect1 = new Rectangle(1102, 1355, 30, 50, getVertexBufferObjectManager()); miniRect1.setColor(0, 0, 1, 0.5f); miniRect1.setVisible(true); scene.attachChild(miniRect1); Rectangle miniRect2 = new Rectangle(1268, 1355, 30, 50, getVertexBufferObjectManager()); miniRect2.setColor(0, 0, 1, 0.5f); miniRect1.setVisible(true); scene.attachChild(miniRect2); rectBody = PhysicsFactory.createBoxBody( physicsWorld, rect, BodyDef.BodyType.DynamicBody, PhysicsFactory.createFixtureDef(10.0f, 0.01f, 10.0f)); rectBody.setUserData("car"); Body miniRect1Body = PhysicsFactory.createBoxBody( physicsWorld, miniRect1, BodyDef.BodyType.DynamicBody, PhysicsFactory.createFixtureDef(10.0f, 0.01f, 10.0f)); miniRect1Body.setUserData("suspension"); Body miniRect2Body = PhysicsFactory.createBoxBody( physicsWorld, miniRect2, BodyDef.BodyType.DynamicBody, PhysicsFactory.createFixtureDef(10.0f, 0.01f, 10.0f)); miniRect2Body.setUserData("suspension"); physicsWorld.registerPhysicsConnector(new PhysicsConnector(rect, rectBody, true, true)); physicsWorld.registerPhysicsConnector(new PhysicsConnector(miniRect1, miniRect1Body, true, true)); physicsWorld.registerPhysicsConnector(new PhysicsConnector(miniRect2, miniRect2Body, true, true)); PrismaticJointDef miniRect1JointDef = new PrismaticJointDef(); miniRect1JointDef.initialize(rectBody, miniRect1Body, miniRect1Body.getWorldCenter(), new Vector2(0.0f, 0.3f)); miniRect1JointDef.collideConnected = false; miniRect1JointDef.enableMotor= true; miniRect1JointDef.maxMotorForce = 15; miniRect1JointDef.motorSpeed = 5; miniRect1JointDef.enableLimit = true; physicsWorld.createJoint(miniRect1JointDef); PrismaticJointDef miniRect2JointDef = new PrismaticJointDef(); miniRect2JointDef.initialize(rectBody, miniRect2Body, miniRect2Body.getWorldCenter(), new Vector2(0.0f, 0.3f)); miniRect2JointDef.collideConnected = false; miniRect2JointDef.enableMotor= true; miniRect2JointDef.maxMotorForce = 15; miniRect2JointDef.motorSpeed = 5; miniRect2JointDef.enableLimit = true; physicsWorld.createJoint(miniRect2JointDef); scene.attachChild(karoseriaSprite); Rectangle r1 = new Rectangle(1050, 1300, 52, 150, getVertexBufferObjectManager()); r1.setColor(0, 1, 0, 0.5f); r1.setVisible(true); scene.attachChild(r1); Body r1body = PhysicsFactory.createBoxBody(physicsWorld, r1, BodyDef.BodyType.DynamicBody, PhysicsFactory.createFixtureDef(10.0f, 0.001f, 0.01f)); r1body.setUserData("suspensionHelper"); physicsWorld.registerPhysicsConnector(new PhysicsConnector(r1, r1body, true, true)); WeldJointDef r1jointDef = new WeldJointDef(); r1jointDef.initialize(r1body, rectBody, r1body.getWorldCenter()); physicsWorld.createJoint(r1jointDef); Rectangle r2 = new Rectangle(1132, 1300, 136, 150, getVertexBufferObjectManager()); r2.setColor(0, 1, 0, 0.5f); r2.setVisible(true); scene.attachChild(r2); Body r2body = PhysicsFactory.createBoxBody(physicsWorld, r2, BodyDef.BodyType.DynamicBody, PhysicsFactory.createFixtureDef(10.0f, 0.001f, 0.01f)); r2body.setUserData("suspensionHelper"); physicsWorld.registerPhysicsConnector(new PhysicsConnector(r2, r2body, true, true)); WeldJointDef r2jointDef = new WeldJointDef(); r2jointDef.initialize(r2body, rectBody, r2body.getWorldCenter()); physicsWorld.createJoint(r2jointDef); Rectangle r3 = new Rectangle(1298, 1300, 50, 150, getVertexBufferObjectManager()); r3.setColor(0, 1, 0, 0.5f); r3.setVisible(true); scene.attachChild(r3); Body r3body = PhysicsFactory.createBoxBody(physicsWorld, r3, BodyDef.BodyType.DynamicBody, PhysicsFactory.createFixtureDef(1f, 0.01f, 0.01f)); r3body.setUserData("suspensionHelper"); physicsWorld.registerPhysicsConnector(new PhysicsConnector(r3, r3body, true, true)); WeldJointDef r3jointDef = new WeldJointDef(); r3jointDef.initialize(r3body, rectBody, r3body.getWorldCenter()); physicsWorld.createJoint(r3jointDef); MouseJointDef md = new MouseJointDef(); Sprite wheel1 = new Sprite( miniRect1.getX()+miniRect1.getWidth()/2-wheelTexture.getWidth()/2, miniRect1.getY()+miniRect1.getHeight()-wheelTexture.getHeight()/2, wheelTexture, engine.getVertexBufferObjectManager()); scene.attachChild(wheel1); Body wheel1body = PhysicsFactory.createCircleBody( physicsWorld, wheel1, BodyDef.BodyType.DynamicBody, PhysicsFactory.createFixtureDef(10.0f, 0.01f, 5.0f)); wheel1body.setUserData("wheel"); Shape wheel1shape = wheel1body.getFixtureList().get(0).getShape(); wheel1shape.setRadius(wheel1shape.getRadius()*(3.0f/4.0f)); physicsWorld.registerPhysicsConnector(new PhysicsConnector(wheel1, wheel1body, true, true)); Sprite wheel2 = new Sprite( miniRect2.getX()+miniRect2.getWidth()/2-wheelTexture.getWidth()/2, miniRect2.getY()+miniRect2.getHeight()-wheelTexture.getHeight()/2, wheelTexture, engine.getVertexBufferObjectManager()); scene.attachChild(wheel2); Body wheel2body = PhysicsFactory.createCircleBody( physicsWorld, wheel2, BodyDef.BodyType.DynamicBody, PhysicsFactory.createFixtureDef(10.0f, 0.01f, 5.0f)); wheel2body.setUserData("wheel"); Shape wheel2shape = wheel2body.getFixtureList().get(0).getShape(); wheel2shape.setRadius(wheel2shape.getRadius()*(3.0f/4.0f)); physicsWorld.registerPhysicsConnector(new PhysicsConnector(wheel2, wheel2body, true, true)); RevoluteJointDef frontWheelRevoluteJointDef = new RevoluteJointDef(); frontWheelRevoluteJointDef.initialize(wheel1body, miniRect1Body, wheel1body.getWorldCenter()); frontWheelRevoluteJointDef.collideConnected = false; RevoluteJointDef rearWheelRevoluteJointDef = new RevoluteJointDef(); rearWheelRevoluteJointDef.initialize(wheel2body, miniRect2Body, wheel2body.getWorldCenter()); rearWheelRevoluteJointDef.collideConnected = false; rearWheelRevoluteJointDef.motorSpeed = 2050; rearWheelRevoluteJointDef.maxMotorTorque= 3580; physicsWorld.createJoint(frontWheelRevoluteJointDef); Joint j = physicsWorld.createJoint(rearWheelRevoluteJointDef); rearWheelRevoluteJoint = (RevoluteJoint)j; r1body.setBullet(true); r2body.setBullet(true); r3body.setBullet(true); miniRect1Body.setBullet(true); miniRect2Body.setBullet(true); rectBody.setBullet(true); at low speeds, it's OK, but on high speed vehicle can even flip around on flat ground.. Is there a way to make this work better?

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• External USB Drive

  - by ErocM

  I have a server that I hooked up an external USB drive. It was formatted in windows and has files on it already. I'm new to Ubuntu so please be patient... I have two questions: Will Ubuntu see the drive since it was formatted in windows? How do I mount this drive or rather, how do I know it's seen by Ubuntu? Thanks! I did fdisk -l and this is what I have but I don't see it. It's a 1tb drive: Disk /dev/sda: 320.1 GB, 320072933376 bytes 255 heads, 63 sectors/track, 38913 cylinders, total 625142448 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: 0x0001eb47 Device Boot Start End Blocks Id System /dev/sda1 * 2048 499711 248832 83 Linux /dev/sda2 501758 625141759 312320001 5 Extended /dev/sda5 501760 625141759 312320000 8e Linux LVM Disk /dev/sdc: 160.0 GB, 160041885696 bytes 255 heads, 63 sectors/track, 19457 cylinders, total 312581808 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: 0x00000000 Disk /dev/sdc doesn't contain a valid partition table Disk /dev/sdb: 160.0 GB, 160041885696 bytes 255 heads, 63 sectors/track, 19457 cylinders, total 312581808 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: 0x00000000 Disk /dev/sdb doesn't contain a valid partition table Disk /dev/mapper/ubuntu-root: 316.6 GB, 316577677312 bytes 255 heads, 63 sectors/track, 38488 cylinders, total 618315776 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: 0x00000000 Disk /dev/mapper/ubuntu-root doesn't contain a valid partition table Disk /dev/mapper/ubuntu-swap_1: 3217 MB, 3217031168 bytes 255 heads, 63 sectors/track, 391 cylinders, total 6283264 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: 0x00000000 this is an external USB hard drive not a thumb drive :)

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• How do I increase moving speed of body?

  - by Siddharth

  How to move ball speedily on the screen using box2d in libGDX? package com.badlogic.box2ddemo; import com.badlogic.gdx.ApplicationListener; import com.badlogic.gdx.Gdx; import com.badlogic.gdx.graphics.GL10; import com.badlogic.gdx.graphics.Texture; import com.badlogic.gdx.graphics.g2d.Sprite; import com.badlogic.gdx.graphics.g2d.SpriteBatch; import com.badlogic.gdx.graphics.g2d.TextureRegion; import com.badlogic.gdx.math.Matrix4; import com.badlogic.gdx.math.Vector2; import com.badlogic.gdx.physics.box2d.Body; import com.badlogic.gdx.physics.box2d.BodyDef; import com.badlogic.gdx.physics.box2d.BodyDef.BodyType; import com.badlogic.gdx.physics.box2d.Box2DDebugRenderer; import com.badlogic.gdx.physics.box2d.CircleShape; import com.badlogic.gdx.physics.box2d.Fixture; import com.badlogic.gdx.physics.box2d.FixtureDef; import com.badlogic.gdx.physics.box2d.PolygonShape; import com.badlogic.gdx.physics.box2d.World; public class Box2DDemo implements ApplicationListener { private SpriteBatch batch; private TextureRegion texture; private World world; private Body groundDownBody, groundUpBody, groundLeftBody, groundRightBody, ballBody; private BodyDef groundBodyDef1, groundBodyDef2, groundBodyDef3, groundBodyDef4, ballBodyDef; private PolygonShape groundDownPoly, groundUpPoly, groundLeftPoly, groundRightPoly; private CircleShape ballPoly; private Sprite sprite; private FixtureDef fixtureDef; private Vector2 ballPosition; private Box2DDebugRenderer renderer; Vector2 vector2; @Override public void create() { texture = new TextureRegion(new Texture( Gdx.files.internal("img/red_ring.png"))); sprite = new Sprite(texture); sprite.setOrigin(sprite.getWidth() / 2, sprite.getHeight() / 2); batch = new SpriteBatch(); world = new World(new Vector2(0.0f, 0.0f), false); groundBodyDef1 = new BodyDef(); groundBodyDef1.type = BodyType.StaticBody; groundBodyDef1.position.x = 0.0f; groundBodyDef1.position.y = 0.0f; groundDownBody = world.createBody(groundBodyDef1); groundBodyDef2 = new BodyDef(); groundBodyDef2.type = BodyType.StaticBody; groundBodyDef2.position.x = 0f; groundBodyDef2.position.y = Gdx.graphics.getHeight(); groundUpBody = world.createBody(groundBodyDef2); groundBodyDef3 = new BodyDef(); groundBodyDef3.type = BodyType.StaticBody; groundBodyDef3.position.x = 0f; groundBodyDef3.position.y = 0f; groundLeftBody = world.createBody(groundBodyDef3); groundBodyDef4 = new BodyDef(); groundBodyDef4.type = BodyType.StaticBody; groundBodyDef4.position.x = Gdx.graphics.getWidth(); groundBodyDef4.position.y = 0f; groundRightBody = world.createBody(groundBodyDef4); groundDownPoly = new PolygonShape(); groundDownPoly.setAsBox(480.0f, 10f); fixtureDef = new FixtureDef(); fixtureDef.density = 0f; fixtureDef.restitution = 1f; fixtureDef.friction = 0f; fixtureDef.shape = groundDownPoly; fixtureDef.filter.groupIndex = 0; groundDownBody.createFixture(fixtureDef); groundUpPoly = new PolygonShape(); groundUpPoly.setAsBox(480.0f, 10f); fixtureDef = new FixtureDef(); fixtureDef.friction = 0f; fixtureDef.restitution = 0f; fixtureDef.density = 0f; fixtureDef.shape = groundUpPoly; fixtureDef.filter.groupIndex = 0; groundUpBody.createFixture(fixtureDef); groundLeftPoly = new PolygonShape(); groundLeftPoly.setAsBox(10f, 320f); fixtureDef = new FixtureDef(); fixtureDef.friction = 0f; fixtureDef.restitution = 0f; fixtureDef.density = 0f; fixtureDef.shape = groundLeftPoly; fixtureDef.filter.groupIndex = 0; groundLeftBody.createFixture(fixtureDef); groundRightPoly = new PolygonShape(); groundRightPoly.setAsBox(10f, 320f); fixtureDef = new FixtureDef(); fixtureDef.friction = 0f; fixtureDef.restitution = 0f; fixtureDef.density = 0f; fixtureDef.shape = groundRightPoly; fixtureDef.filter.groupIndex = 0; groundRightBody.createFixture(fixtureDef); ballPoly = new CircleShape(); ballPoly.setRadius(16f); fixtureDef = new FixtureDef(); fixtureDef.shape = ballPoly; fixtureDef.density = 1f; fixtureDef.friction = 1f; fixtureDef.restitution = 1f; ballBodyDef = new BodyDef(); ballBodyDef.type = BodyType.DynamicBody; ballBodyDef.position.x = (int) 200; ballBodyDef.position.y = (int) 200; ballBody = world.createBody(ballBodyDef); ballBody.setLinearVelocity(200f, 200f); // ballBody.applyLinearImpulse(new Vector2(250f, 250f), // ballBody.getLocalCenter()); ballBody.createFixture(fixtureDef); renderer = new Box2DDebugRenderer(true, false, false); } @Override public void dispose() { ballPoly.dispose(); groundLeftPoly.dispose(); groundUpPoly.dispose(); groundDownPoly.dispose(); groundRightPoly.dispose(); world.destroyBody(ballBody); world.dispose(); } @Override public void pause() { } @Override public void render() { world.step(1f/30f, 3, 3); Gdx.gl.glClearColor(1f, 1f, 1f, 1f); Gdx.gl.glClear(GL10.GL_COLOR_BUFFER_BIT); batch.begin(); vector2 = ballBody.getLinearVelocity(); System.out.println("X=" + vector2.x + " Y=" + vector2.y); ballPosition = ballBody.getPosition(); renderer.render(world,batch.getProjectionMatrix()); // int preX = (int) (vector2.x / Math.abs(vector2.x)); // int preY = (int) (vector2.y / Math.abs(vector2.y)); // // if (Math.abs(vector2.x) == 0.0f) // ballBody1.setLinearVelocity(1.4142137f, vector2.y); // else if (Math.abs(vector2.x) < 1.4142137f) // ballBody1.setLinearVelocity(preX * 5, vector2.y); // // if (Math.abs(vector2.y) == 0.0f) // ballBody1.setLinearVelocity(vector2.x, 1.4142137f); // else if (Math.abs(vector2.y) < 1.4142137f) // ballBody1.setLinearVelocity(vector2.x, preY * 5); batch.draw(sprite, (ballPosition.x - (texture.getRegionWidth() / 2)), (ballPosition.y - (texture.getRegionHeight() / 2))); batch.end(); } @Override public void resize(int arg0, int arg1) { } @Override public void resume() { } } I implement above code but I can not achieve higher moving speed of the ball

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• Internet Timeouts with TP-Link TL-WN821N v2 wireless usb stick

  - by user1622959

  A short time after accessing the internet, the browser/download times out. Before the timeout, the internet works OK briefly; afterwards, the wireless is still connected with a strong signal, but every internet access results in a timeout. When I leave the PC for a while, the internet is back just to timeout again as soon as I start using it. The same happens when I reconnect to the router. Also, when I surf the internet, it takes a couple of minutes until the timeout, but when I download something, it times out in a matter of seconds. The wireless adapter works just fine in Windows and internet via ethernet cable works just fine in Ubuntu. Does anyone have the same problem or knows a solution. I use Ubuntu 12.10 x64. The problem occurs since I installed ubuntu (which was a few days ago). Here some stuff that might be usefull: serus@serus-Ubuntu-PC:~$ lsusb Bus 002 Device 002: ID 0cf3:1002 Atheros Communications, Inc. TP-Link TL-WN821N v2 802.11n [Atheros AR9170] serus@serus-Ubuntu-PC:~$ lsmod Module Size Used by carl9170 82083 0 serus@serus-Ubuntu-PC:~$ modinfo carl9170 filename: /lib/modules/3.5.0-21- generic/kernel/drivers/net/wireless/ath/carl9170/carl9170.ko alias: arusb_lnx alias: ar9170usb firmware: carl9170-1.fw description: Atheros AR9170 802.11n USB wireless serus@serus-Ubuntu-PC:~$ iwconfig wlan0 IEEE 802.11bgn ESSID:"virginmedia0137463" Mode:Managed Frequency:2.462 GHz Access Point: A0:21:B7:F8:29:B6 Bit Rate=240 Mb/s Tx-Power=20 dBm Retry long limit:7 RTS thr:off Fragment thr:off Power Management:off Link Quality=66/70 Signal level=-44 dBm Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 Tx excessive retries:1399 Invalid misc:18 Missed beacon:0 serus@serus-Ubuntu-PC:~$ sudo lshw -C network *-network description: Wireless interface physical id: 1 bus info: usb@2:2 logical name: wlan0 serial: 00:27:19:bb:00:19 capabilities: ethernet physical wireless configuration: broadcast=yes driver=carl9170 driverversion=3.5.0-21-generic firmware=1.9.4 ip=192.168.0.6 link=yes multicast=yes wireless=IEEE 802.11bgn

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• How do install Ubuntu from a USB stick?

  - by Sophia

  When I go to the boot menu on my computer and select USB stick, the screen goes black and there comes a flickering underline. Like I could write something. But I can't. Whatever I push, nothing happens. Except the PrintScrn/SysRq button. When I push it, mu computer beeps. I get no choose menu. Nothing. I found out the usb stick is in msdos format. So what format should I use and how can I format it? I am not a computer geek who knows everything. I'm just a beginner. And only 16 years old. I've got a new problem. The screen isn't black anymore. Now there comes an error message: SYSLINUX 4.04 CHS 20110518 Copyright (C) 1994-2011 H.Peter Anvin et al ERROR:No configurationfile found No DEFAULT or UI configuration directive found! boot: And when I write something: boot:example Could not find kernel image:example boot: Why does this fail all the time? ps. I'm using Ubuntu Oneiric 11.10.

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• Increase moving speed of body

  - by Siddharth

  How to move ball speedily on the screen using box2d in libGDX? public class Box2DDemo implements ApplicationListener { private SpriteBatch batch; private TextureRegion texture; private World world; private Body groundDownBody, groundUpBody, groundLeftBody, groundRightBody, ballBody; private BodyDef groundBodyDef1, groundBodyDef2, groundBodyDef3, groundBodyDef4, ballBodyDef; private PolygonShape groundDownPoly, groundUpPoly, groundLeftPoly, groundRightPoly; private CircleShape ballPoly; private Sprite sprite; private FixtureDef fixtureDef; private Vector2 ballPosition; private Box2DDebugRenderer renderer; Vector2 vector2; @Override public void create() { texture = new TextureRegion(new Texture( Gdx.files.internal("img/red_ring.png"))); sprite = new Sprite(texture); sprite.setOrigin(sprite.getWidth() / 2, sprite.getHeight() / 2); batch = new SpriteBatch(); world = new World(new Vector2(0.0f, -10.0f), false); groundBodyDef1 = new BodyDef(); groundBodyDef1.type = BodyType.StaticBody; groundBodyDef1.position.x = 0.0f; groundBodyDef1.position.y = 0.0f; groundDownBody = world.createBody(groundBodyDef1); groundBodyDef2 = new BodyDef(); groundBodyDef2.type = BodyType.StaticBody; groundBodyDef2.position.x = 0f; groundBodyDef2.position.y = Gdx.graphics.getHeight(); groundUpBody = world.createBody(groundBodyDef2); groundBodyDef3 = new BodyDef(); groundBodyDef3.type = BodyType.StaticBody; groundBodyDef3.position.x = 0f; groundBodyDef3.position.y = 0f; groundLeftBody = world.createBody(groundBodyDef3); groundBodyDef4 = new BodyDef(); groundBodyDef4.type = BodyType.StaticBody; groundBodyDef4.position.x = Gdx.graphics.getWidth(); groundBodyDef4.position.y = 0f; groundRightBody = world.createBody(groundBodyDef4); groundDownPoly = new PolygonShape(); groundDownPoly.setAsBox(480.0f, 10f); fixtureDef = new FixtureDef(); fixtureDef.density = 0f; fixtureDef.restitution = 1f; fixtureDef.friction = 0f; fixtureDef.shape = groundDownPoly; fixtureDef.filter.groupIndex = 0; groundDownBody.createFixture(fixtureDef); groundUpPoly = new PolygonShape(); groundUpPoly.setAsBox(480.0f, 10f); fixtureDef = new FixtureDef(); fixtureDef.friction = 0f; fixtureDef.restitution = 0f; fixtureDef.density = 0f; fixtureDef.shape = groundUpPoly; fixtureDef.filter.groupIndex = 0; groundUpBody.createFixture(fixtureDef); groundLeftPoly = new PolygonShape(); groundLeftPoly.setAsBox(10f, 320f); fixtureDef = new FixtureDef(); fixtureDef.friction = 0f; fixtureDef.restitution = 0f; fixtureDef.density = 0f; fixtureDef.shape = groundLeftPoly; fixtureDef.filter.groupIndex = 0; groundLeftBody.createFixture(fixtureDef); groundRightPoly = new PolygonShape(); groundRightPoly.setAsBox(10f, 320f); fixtureDef = new FixtureDef(); fixtureDef.friction = 0f; fixtureDef.restitution = 0f; fixtureDef.density = 0f; fixtureDef.shape = groundRightPoly; fixtureDef.filter.groupIndex = 0; groundRightBody.createFixture(fixtureDef); ballPoly = new CircleShape(); ballPoly.setRadius(16f); fixtureDef = new FixtureDef(); fixtureDef.shape = ballPoly; fixtureDef.density = 1f; fixtureDef.friction = 1f; fixtureDef.restitution = 1f; ballBodyDef = new BodyDef(); ballBodyDef.type = BodyType.DynamicBody; ballBodyDef.position.x = (int) 200; ballBodyDef.position.y = (int) 200; ballBody = world.createBody(ballBodyDef); // ballBody.setLinearVelocity(200f, 200f); // ballBody.applyLinearImpulse(new Vector2(250f, 250f), // ballBody.getLocalCenter()); ballBody.createFixture(fixtureDef); renderer = new Box2DDebugRenderer(true, false, false); } @Override public void dispose() { ballPoly.dispose(); groundLeftPoly.dispose(); groundUpPoly.dispose(); groundDownPoly.dispose(); groundRightPoly.dispose(); world.destroyBody(ballBody); world.dispose(); } @Override public void pause() { } @Override public void render() { world.step(1f/30f, 3, 3); Gdx.gl.glClearColor(1f, 1f, 1f, 1f); Gdx.gl.glClear(GL10.GL_COLOR_BUFFER_BIT); batch.begin(); vector2 = ballBody.getLinearVelocity(); System.out.println("X=" + vector2.x + " Y=" + vector2.y); ballPosition = ballBody.getPosition(); renderer.render(world,batch.getProjectionMatrix()); // int preX = (int) (vector2.x / Math.abs(vector2.x)); // int preY = (int) (vector2.y / Math.abs(vector2.y)); // // if (Math.abs(vector2.x) == 0.0f) // ballBody1.setLinearVelocity(1.4142137f, vector2.y); // else if (Math.abs(vector2.x) < 1.4142137f) // ballBody1.setLinearVelocity(preX * 5, vector2.y); // // if (Math.abs(vector2.y) == 0.0f) // ballBody1.setLinearVelocity(vector2.x, 1.4142137f); // else if (Math.abs(vector2.y) < 1.4142137f) // ballBody1.setLinearVelocity(vector2.x, preY * 5); batch.draw(sprite, (ballPosition.x - (texture.getRegionWidth() / 2)), (ballPosition.y - (texture.getRegionHeight() / 2))); batch.end(); } @Override public void resize(int arg0, int arg1) { } @Override public void resume() { } } I implement above code but I can not achieve higher moving speed of the ball

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• Sony Vaio CPU fan runs at full speed after installing Windows 8.1 preview

  - by greg27

  I installed the Windows 8.1 preview on my Sony Vaio E Series 14P (http://www.sony.com.au/product/sve14a27cg) and now my CPU fan is running at full speed all the time. When I first start my computer it runs normally, but a few seconds after reaching the Windows login screen the fan speed will suddenly jump up to max. It's pretty loud, so I'm hoping there's a solution! I've tried updating my bios to the latest version but that didn't help. I've tried programs like SpeedFan, but that wasn't able to detect my CPU fan at all. My CPU usage and temperature is normal and doesn't warrant the max fan speed. Someone else has reported the issue here: http://answers.microsoft.com/en-us/windows/forum/windows8_1_pr-hardware/sony-vaio-e-series-sve14a35cxh100-fan-throttle/45ec823a-2bc8-43ea-8557-b1a5dd0a6870 Is there any way to fix this without having to refresh/reinstall Windows?

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• Ubuntu 9.0.4 Presario S4000NX Fan Speed

  - by Chris C

  I recently install Ubuntu 9.0.4 on a Presario S4000NX and the CPU fan speed is kept at max. With Windows XP installed the fan speed would increase/decrease as required. I've tried to install lm-sensors and run the sensors-detect. It recommended that I load the modules which I did: smsc47m192 i2c-i801 When running sensor-detect it gave me this strange message: Trying family SMSC Found SMSC LPC47M15x/192/997 Super IO Fan Sensors (but not activated) Running the sensors command gives me a list of voltages and CPU and temperature but doesn't list any fans. After doing some Internet research I then tried to load the smsc47m1 module but I get the following error: FATAL: Error inserting smsc47m1 (/lib/modules/2.6.28-15-generic/kernel/drivers/hwmon/smsc47m1.ko): no such device The file smsc47m1.ko does exist in the listed folder. Any suggestions for getting the fan speed (and the noise) down in Ubuntu? Thanx. - Chris P.S. - I would have put better tags but Server Fault wouldn't let me.

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• Internet connection slower than network connection speed

  - by Mike Pateras

  I've got a computer connected to a wireless router on a different floor. When I look at the network connection, I'm told the signal strength is low, and that I've got a connection of about 26mbps (often higher). However, my internet connection on that machine is very slow. Speedtests show it at about 1-2mbps, and it really shows when loading pages and video. I have fiber optic internet access, and the machine that's connected to the router/modem via cable gets the 20mbps on speed tests, and is extremely fast in every day use. My question is, is the advertised 26mbps+ connection speed perhaps inaccurate, and that my wireless bandwidth is the likely bottleneck here? Or is the signal strength what's key here? And what might I do about this? Power cycling the router helped a bit, a speed test went as high as 6mbps after doing that.

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• Speed up file access on home network

  - by kurasa

  I have 2 PCs (Windows 7 Ultimate) and a Mac running Windows 7 using vmware fusion on my home network tied together using WRN1000 NETGEAR Router On one of the PC's I have a set of file (MYOB .myo). These use a data source to access the data in the files. Operations (reading,writing) to the .myo on the PC which hosts the files is fine but the other 2 it is painfully slow/unreliable and I am wondering what I can do to speed this up. Some ideas I have are 1. Turn off the Windows firewall on all the windows installations on the home network 2. Buy another router. Specifically a router which I can connect a USB flash drive on the back where I can put the .myo files and all the PC can access the files from the USB flash drive on the router (does this speed things up?) Any advice greatly appreciated on how I can speed up this access to data

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• how to play MP3 files at fast speed

  - by Anil

  I have MP3 file and the contents are continuous and slow. Is there any tool, which converts them to fast speed. I am aware of the fact that with VLC, i can play fast. But, the problem is every time i have to fix the speed of the player. The Question is, i dont want to manipulate/tweak every time i play the file. I wish to have permanent solution to play the slow playing MP3 files to play fast (some thing like saving the file with fast speed etc).

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• internet speed and routers are controlled by whom

  - by Ozgun Sunal

  i need to learn two things. each is related to other a bit. The first one is, while our LAN speed is usually 100 Mbps or at gigabit levels(very big compared to WAN speeds), WAN speed for instance DSL connections are far less than this. However, we are able to download huge files at those Mb speeds. Isn't this weird? [my real concern is why WAN speed is lower than LAN speeds] Who controls those routers around the large Internet? (while we, as web clients are connected to Internet, packets travel through those routers to the destination network/s).But, are those routers all inside the ISP network and if not, who controls those large numbers of routers?

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• How to control fan speed using SpeedFan?

  - by John Young

  The CPU fan in my laptop is running too fast. I wish to control the speed manually to my preference, at times. Here is a CPU-Z screenshot of my laptop configuration: http://i.stack.imgur.com/1oST1.png And here is how SpeedFan window looks at my end: http://i.imgur.com/BIi0RdJ.jpg I have no idea how to use SpeedFan to control my laptop's CPU fan speed. How to configure it so that I can increase and decrease speed of the fan at my will? Edit: Sorry, the first image wasn't as intended, so I've corrected it now. Also, if someone can edit the post and embed the images in the post, that would be great. I need at least 10 reputation to successfully accomplish that.

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• Sudden slow read & write speed on all IO

  - by user23392

  I have a custom built rig that has 2 storage drives. for OS: Western Digital 1.0TB HARD DR 64MB for other stuff: Corsair Performance 3 128GB (SSD) [ expected read speed: 400 mb/s ] The system was incredibly fast for a couple of months, then one day i was playing a game then it started to get buggy (some sounds and objects disappearing), i stopped the game and the system seemed to be unstable so i had to shut it down, next morning i couldn't start it up, it was saying something about corrupt device. I formatted both disks and installed a fresh copy of windows, all i can say that since that day the system was never like before, it takes 10 minutes to boot up (the icons and desktop slowly appear). but once it's done the slowness isn't as noticeable. Here's my benchmark on the HDD ( read speed - write speed ): And the SSD: Anyone knows what could be the issue?

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• limit the speed of writing files to NFS

  - by xgwang

  CentOS 5.6 NFS is mounted on the server for backup disk space. When the backup job started, it could reach 80MB/s and we really do not expect it took so much bandwidth. So i need to find a way to limit the speed of writing to NFS. I tried rsync with --bwlimit=5000. However, it did limit the reading speed, but the accumulated data still was written at 80MB/s, and no writing activities for seconds. Is there any way to limit the writing speed of NFS?

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• how to mount partitions from USB drives in Windows using Delphi?

  - by user569556

  Hi. I'm a Delphi programmer. I want to mount all partitions from USB drives in Windows (XP). The OS is doing this automatically but there are situations when such a program is useful. I know how to find if a drive is on USB or not. My code so far is: type STORAGE_QUERY_TYPE = (PropertyStandardQuery = 0, PropertyExistsQuery, PropertyMaskQuery, PropertyQueryMaxDefined); TStorageQueryType = STORAGE_QUERY_TYPE; STORAGE_PROPERTY_ID = (StorageDeviceProperty = 0, StorageAdapterProperty); TStoragePropertyID = STORAGE_PROPERTY_ID; STORAGE_PROPERTY_QUERY = packed record PropertyId: STORAGE_PROPERTY_ID; QueryType: STORAGE_QUERY_TYPE; AdditionalParameters: array[0..9] of AnsiChar; end; TStoragePropertyQuery = STORAGE_PROPERTY_QUERY; STORAGE_BUS_TYPE = (BusTypeUnknown = 0, BusTypeScsi, BusTypeAtapi, BusTypeAta, BusType1394, BusTypeSsa, BusTypeFibre, BusTypeUsb, BusTypeRAID, BusTypeiScsi, BusTypeSas, BusTypeSata, BusTypeMaxReserved = $7F); TStorageBusType = STORAGE_BUS_TYPE; STORAGE_DEVICE_DESCRIPTOR = packed record Version: DWORD; Size: DWORD; DeviceType: Byte; DeviceTypeModifier: Byte; RemovableMedia: Boolean; CommandQueueing: Boolean; VendorIdOffset: DWORD; ProductIdOffset: DWORD; ProductRevisionOffset: DWORD; SerialNumberOffset: DWORD; BusType: STORAGE_BUS_TYPE; RawPropertiesLength: DWORD; RawDeviceProperties: array[0..0] of AnsiChar; end; TStorageDeviceDescriptor = STORAGE_DEVICE_DESCRIPTOR; const IOCTL_STORAGE_QUERY_PROPERTY = $002D1400; var i: Integer; H: THandle; USBDrives: array of Byte; Query: TStoragePropertyQuery; dwBytesReturned: DWORD; Buffer: array[0..1023] of Byte; sdd: TStorageDeviceDescriptor absolute Buffer; begin SetLength(UsbDrives, 0); SetErrorMode(SEM_FAILCRITICALERRORS); for i := 0 to 99 do begin H := CreateFile(PChar('\\.\PhysicalDrive' + IntToStr(i)), 0, FILE_SHARE_READ or FILE_SHARE_WRITE, nil, OPEN_EXISTING, 0, 0); if H <> INVALID_HANDLE_VALUE then begin try dwBytesReturned := 0; FillChar(Query, SizeOf(Query), 0); FillChar(Buffer, SizeOf(Buffer), 0); sdd.Size := SizeOf(Buffer); Query.PropertyId := StorageDeviceProperty; Query.QueryType := PropertyStandardQuery; if DeviceIoControl(H, IOCTL_STORAGE_QUERY_PROPERTY, @Query, SizeOf(Query), @Buffer, SizeOf(Buffer), dwBytesReturned, nil) then if sdd.BusType = BusTypeUsb then begin SetLength(USBDrives, Length(USBDrives) + 1); UsbDrives[High(USBDrives)] := Byte(i); end; finally CloseHandle(H); end; end; end; for i := 0 to High(USBDrives) do begin // end; end. But I don't know how to access partitions on each drive and mounts them. Can you please help me? I searched before I asked and I couldn't find a working code. But if I did not properly then I'm sorry and please show me that topic. Best regards, John

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• I have a problem with a AE1200 Cisco/Linksys Wireless-N USB adapter having stopped working after I ran the update manager in Ubuntu 12.04

  - by user69670

  Here is the problem, I use a Cisco/Linksys AE1200 wireless network adapter to connect my desktop to a public wifi internet connection. I use ndiswrapper to use the windows driver and it had been working fine for me untill I ran the update manager overnight a few days ago. When I woke up it was asking for the normal computer restart to implement the changes but after rebooting the computer, the wireless adapter did not work, the status light on the adapter did not light up even though ubuntu recognizes it is there and according to ndiswrapper the drivers are loaded and the hardware is present. the grep command is being a bitch for some unknown reason today so this will be long sorry Output from "lspci": 00:00.0 Host bridge: Advanced Micro Devices [AMD] nee ATI Radeon Xpress 200 Host Bridge (rev 01) 00:01.0 PCI bridge: Advanced Micro Devices [AMD] nee ATI RS480 PCI Bridge 00:12.0 SATA controller: Advanced Micro Devices [AMD] nee ATI SB600 Non-Raid-5 SATA 00:13.0 USB controller: Advanced Micro Devices [AMD] nee ATI SB600 USB (OHCI0) 00:13.1 USB controller: Advanced Micro Devices [AMD] nee ATI SB600 USB (OHCI1) 00:13.2 USB controller: Advanced Micro Devices [AMD] nee ATI SB600 USB (OHCI2) 00:13.3 USB controller: Advanced Micro Devices [AMD] nee ATI SB600 USB (OHCI3) 00:13.4 USB controller: Advanced Micro Devices [AMD] nee ATI SB600 USB (OHCI4) 00:13.5 USB controller: Advanced Micro Devices [AMD] nee ATI SB600 USB Controller (EHCI) 00:14.0 SMBus: Advanced Micro Devices [AMD] nee ATI SBx00 SMBus Controller (rev 13) 00:14.1 IDE interface: Advanced Micro Devices [AMD] nee ATI SB600 IDE 00:14.3 ISA bridge: Advanced Micro Devices [AMD] nee ATI SB600 PCI to LPC Bridge 00:14.4 PCI bridge: Advanced Micro Devices [AMD] nee ATI SBx00 PCI to PCI Bridge 01:05.0 VGA compatible controller: Advanced Micro Devices [AMD] nee ATI RC410 [Radeon Xpress 200] 02:02.0 Communication controller: Conexant Systems, Inc. HSF 56k Data/Fax Modem 02:03.0 Multimedia audio controller: Creative Labs CA0106 Soundblaster 02:05.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+ (rev 10) Output from "lsusb": Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 001 Device 009: ID 13b1:0039 Linksys AE1200 802.11bgn Wireless Adapter [Broadcom BCM43235] Bus 003 Device 002: ID 045e:0053 Microsoft Corp. Optical Mouse Bus 004 Device 002: ID 1043:8006 iCreate Technologies Corp. Flash Disk 32-256 MB Output from "ifconfig": eth0 Link encap:Ethernet HWaddr 00:19:21:b6:af:7c UP BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:0 (0.0 B) TX bytes:0 (0.0 B) Interrupt:20 Base address:0xb400 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:13232 errors:0 dropped:0 overruns:0 frame:0 TX packets:13232 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:1084624 (1.0 MB) TX bytes:1084624 (1.0 MB) Output from "iwconfig": lo no wireless extensions. eth0 no wireless extensions. Output from "lsmod": Module Size Used by nls_iso8859_1 12617 1 nls_cp437 12751 1 vfat 17308 1 fat 55605 1 vfat uas 17828 0 usb_storage 39646 1 nls_utf8 12493 1 udf 84366 1 crc_itu_t 12627 1 udf snd_ca0106 39279 2 snd_ac97_codec 106082 1 snd_ca0106 ac97_bus 12642 1 snd_ac97_codec snd_pcm 80845 2 snd_ca0106,snd_ac97_codec rfcomm 38139 0 snd_seq_midi 13132 0 snd_rawmidi 25424 2 snd_ca0106,snd_seq_midi bnep 17830 2 parport_pc 32114 0 bluetooth 158438 10 rfcomm,bnep ppdev 12849 0 snd_seq_midi_event 14475 1 snd_seq_midi snd_seq 51567 2 snd_seq_midi,snd_seq_midi_event snd_timer 28931 2 snd_pcm,snd_seq snd_seq_device 14172 3 snd_seq_midi,snd_rawmidi,snd_seq snd 62064 11 snd_ca0106, snd_ac97_codec,snd_pcm,snd_rawj9fe snd_ca0106,snd_ac97_codec,snd_pcm,snd_rawmidi,snd_seq,snd_timer,snd_seq_device soundcore 14635 1 snd snd_page_alloc 14108 2 snd_ca0106,snd_pcm sp5100_tco 13495 0 i2c_piix4 13093 0 radeon 733693 3 ttm 65344 1 radeon drm_kms_helper 45466 1 radeon drm 197692 5 radeon,ttm,drm_kms_helper i2c_algo_bit 13199 1 radeon mac_hid 13077 0 shpchp 32325 0 ati_agp 13242 0 lp 17455 0 parport 40930 3 parport_pc,ppdev,lp usbhid 41906 0 hid 77367 1 usbhid 8139too 23283 0 8139cp 26759 0 pata_atiixp 12999 1 Output from "sudo lshw -C network": *-network description: Ethernet interface product: RTL-8139/8139C/8139C+ vendor: Realtek Semiconductor Co., Ltd. physical id: 5 bus info: pci@0000:02:05.0 logical name: eth0 version: 10 serial: 00:19:21:b6:af:7c size: 10Mbit/s capacity: 100Mbit/s width: 32 bits clock: 33MHz capabilities: pm bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 10 0bt-fd autonegotiation configuration: autonegotiation=on broadcast=yes driver=8139too driverversion=0.9.28 duplex=half latency=64 link=no maxlatency=64 mingnt=32 multicast=yes port=MII speed=10Mbit/s resources: irq:20 ioport:b400(size=256) memory:ff5fdc00-ff5fdcff Output from "iwlist scan": lo Interface doesn't support scanning. eth0 Interface doesn't support scanning. Output from "lsb_release -d": Ubuntu 12.04 LTS Output from "uname -mr": 3.2.0-24-generic-pae i686 Output from "sudo /etc/init.d/networking restart": * Running /etc/init.d/networking restart is deprecated because it may not enable again some interfaces * Reconfiguring network interfaces... [ OK ]

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• Why Ubuntu is not booting anymore from USB live?

  - by xRobot

  I have just purchased a brand new laptop Samsung 300e5c with Windows 7. So I have reduce the windows partition and I have installed ubuntu 12.04 from my USB pen drive. Then I have tried to boot again from USB pen drive but it doesn't work anymore. I have tryed to boot on others laptop from my USB pen drive and it does work perfectly. but on my laptop, NO :(. I have set all USB drive as first boot device in BIOS. I have tryed on each USB port of my laptop but it doesn't work. Only the first time it did work when I installed ubuntu and now it doesn't work anymore. It's very strange I can see the content of the usb pen drive on my laptop and on others laptop without problems. why it doesn't work anymore ?

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• How can I use a CanoScan N640Pex scanner over a USB/parallel cable?

  - by detly

  I have an old CanoScan N640Pex flat bed scanner and a USB-to-parallel port cable through which I can connect it to my PC. Unfortunately neither Simple Scan nor XSane detect the scanner. I'm running Ubuntu 12.04 (plus updates and backports) with kernel 3.2.0-31-generic. dmesg tells me this when I plus the cable in: [256411.641910] usb 7-1: new full-speed USB device number 10 using uhci_hcd [256411.872392] usblp0: USB Bidirectional printer dev 10 if 0 alt 1 proto 2 vid 0x067B pid 0x2305 [256411.872417] usbcore: registered new interface driver usblp lsusb shows this device for my cable: Bus 007 Device 010: ID 067b:2305 Prolific Technology, Inc. PL2305 Parallel Port The device node created is /dev/usb/lp0 crw-rw---- 1 root lp 180, 0 Sep 9 17:46 /dev/usb/lp0 There is no extra information from any of these commands when I attach the scanner to the cable and power it on, though. I suspect I might need to change something in /etc/sane.d/canon_pp.conf, but I have no idea what to put for the ieee1284 line, since there is pretty much zero documentation for that parameter. So how can I get it to work?

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• "Host usb device connections disabled" in VMware???

  - by ZlateWay

  I installed Linux, Windows XP and Chrome OS in VMware Workstation 7 and in every OS the USB host doesn't work. When I start some of the Operative Systems this message shows up: "host usb device connections disabled" and under that : "The connection to the VMware USB Arbitration Service was unsuccessful. Please check the status of this service in the Microsoft Management Console." So what to do? What do I need to install to make the usb host work? BTW I use Windows 7 as a host OS. Thanks

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• Serial connection over a single USB cable (Windows to linux, or linux to linux)

  - by andyortlieb

  I'm helping out with a project for an embedded device that only has USB and no serial. This device is running Linux. These days, when we need to connect to a serial port on a device we typically use a USB to serial adapter (on something like a phone system or a load balancing device, etc). I would like to know if it is possible to have the host device behave as though it were a serial adapter, thus removing the need for one. Given the nature of USB, is this approach even necessary? To recap, I would like to be able to connect a single A-to-A USB cable from my workstation (be it windows or linux) to this device, for the purpose of administration (especially initial setup), using minicom, putty or hyperterminal. Thanks

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• Can a usb cable carry 12v?

  - by zm15

  Here's what i'm wanting to do. I have a Acer Iconia A500 tablet. I want to plug it in, in the car, but it has a barrel plug and I don't want to buy an inverter. The car adapters are expensive for what they do. I already have a 2.1 amp usb car charger meant for the iPad: http://www.amazon.com/Kensington-K33497US-PowerBolt-Charger-Compatible/dp/tech-data/B003PU01M4/ref=de_a_smtd And i want to use this usb cable from the 2.1 amp port to plug into the A500: http://www.amazon.com/gp/product/B00304DZ7I/ref=ox_sc_act_title_2?ie=UTF8&m=A1HPBDJJIXKXS7 Here are the specs on the original wall charger if that helps: http://www.phihong.com/assets/pdf/PSA18R.pdf The usb cable says it's 5v, but the original charger says it outputs 12v. But since it's just a cable... wasn't sure if that really made a whole lot of difference since it's only 1.5 amps from the wall charger. Is it possible to use that usb cable through the powerbolt car charger, to charge the A500?

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• Unable to boot with Windows 2008 DVD / USB Key

  - by r0ca

  Hi everyone, I am trying to install Windows 2008 server on a HP Proliant DL180 G5. There is no built-in DVD reader so I need to use my LaCie USB one. When I put the CD in and boot from the USB DVD on the server, I get the error message: Boot Failed! Please insert boot media in selected boot device. So I tried with another Windows bootable CD and still no luck. What I've done then, I copied the installation DVD on my 16go USB key. Again, impossible to boot from the USB Key. I have 2 147go SAS 15k HDD on my server. They are not showing in the Bios. I was wondering if this is a reason why nothing will boot on it. I am trying to find a way to deploy Windows 2008 server on my HP server as soon as possible. If you guys have ideas, feel free to let me know :) Best regards, David. System Information: HP Proliant DL180 G5 Quad-Core 2.5 4GO Ram 2x 147GO SAS 15k P.S. This is my first installation ever on SAS/SCSI HDD. Thanks a bunch! Edit: Well, my bad! I purchased a new USB DVD and now I can install Windows 2008 server. Thanks a bunch for your help!

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• USB Keyboard not working under windows 7 x64?

  - by Comboo

  I have two usb keyboards, one no-name cheapo thing and an old logitech. When i plug them in to my computer they pop up in device manager as "Unknown device" respective "USB-receiver". Both of them fail to install any drivers, neighter automatically or through windows update. Both keyboards work perfectly on another computer i have with vista 32bit. Can this be one of those cases where a device does not work in 64bit version of windows? I doubt it though since I've never had that problem before with any device and i thought that basic things like keyboards would be kind of failsafe. I don't really know how to start debugging this issue. I've tried all the obvious, rebooting, changing usb-port etc. Are there any generic x64 keyboard drivers you can use? Is there any way to find the manufacturer of the keyboard over usb? There is nothing written on it.

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• Share a USB sound card over a network/bluetooth (Mac & PC)

  - by AlexW

  I've been wondering how I can stream audio to an external Edirol USB sound card, wirelessly, on both Mac and PC. I'm not looking for high quality transmission, just to play mp3s from my Mac laptop to a USB sound card that is attached to two very nice balanced studio reference monitors. Is there any way I can firstly power the sound card box, and secondly, provide with an audio stream along it's USB input. I've looked at the Belkin USB hub, and I have a Time Capsule with the AirPort interface inside. These things seem to do vaguely what I want but when it comes to audio, the specifications are less clear. Any suggestions very welcome.

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