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  • First time user here

    - by Brian
    Never used Linux before but I decided I want to start somewhere and Ubuntu seemed like the right place to start. I burned the 64bit version iso onto a CD and installed it onto a fresh new hard drive I got and it installed nicely or so I thought. First major problem was the fact that the screen slip oddly, second when I tried to log in everything just kind of froze, I could still move the cursor but thats it. I'm not too tech savy but I can follow instructions and any help given would be greatly appreciated. I am considering dual booting it with my other hard drive that has windows 7 on it but I'm afraid I might mess that up, plus if I do it that way I wouldn't know how to get rid of Ubuntu if I decide its not for me.

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  • Any ideas on reducing lag in terrain generation?

    - by l5p4ngl312
    Ok so here's the deal. I've written an isometric engine that generates terrain based on camera values using 2D perlin noise. I planned on doing 3D but first I need to work out the lag issues I'm having. I will try to explain how I am doing this so that maybe someone can spot where I am going wrong. I know it should not be this laggy. There is the abstract class Block which right now just contains render(). BlockGrass, etc. extend this class and each has code in the render function to create a textured quad at the given position. Then there is the class Chunk which has the function Generate() and setBlocksInArea(). Generate uses 2D perlin noise to make a height map and stores the heights in a 2D array. It stores the positions of each block it generates in blockarray[x][y][z]. The chunks are 8x8x128. In the main game class there is a 3D array called blocksInArea. The blocks in this array are what gets rendered. When a chunk generates, it adds its blocks to this array at the correct index. It is like this so chunks can be saved to the hard drive (even though they aren't yet) but there can still be optimization with the rendering that you wouldn't have if you rendered each chunk separately. Here's where the laggy part comes in: When the camera moves to a new chunk, a row of chunks generates on the end of the axis that the camera moved on. But it still has to move the other chunks up/down in the blocksInArea (render) array. It does this by calculating the new position in the array and doing the Chunk.setBlocksInArea(): for(int x = 0; x < 8; x++){ for(int y = 0; y < 8; y++){ nx = x+(coordX - camCoordX)*8 ny = y+(coordY - camCoordY)*8 for(int z = 0; z < height[x][y]; z++){ blockarray[x][y][z] = Game.blocksInArea[nx][ny][z]; } } } My reasoning was that this would be much faster than doing the perlin noise all over again, but there are still little spikes of lag when you move in between chunks. Edit: Would it be possible to create a 3 dimensional array list so that shifting of chunks within the array would not be neccessary?

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  • Installing Ubuntu Server 11.04

    - by Jackson Walters
    Trying to install Ubuntu Server 11.04 on an 64-bit AMD machine. The install goes fine until after "Loading additional components", then I get a blank purple screen with a responsive cursor at the bottom. I've looked everywhere and can't find anything (all the documentation seems to be on the desktop version). I have a wireless card installed if that makes a difference, don't why it would. This happens regardless of whether nomodeset is set. Here's what it looks like (as described): Specs: CPU - 64-bit AMD Sempron 140 @ 2.7Ghz RAM - 1Gb DDR3 1333 HDD - WD 500Gb 7200RPM SATA 3.0Gb/s Mobo - Foxconn M61PMP-K Wireless Card - Rosewill RNX-G300LX

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  • System freeze after opening Wi-Fi menu can boot into the machine and use Internet in recovery mode

    - by Michael
    So right now sitting in front of my Alienware area 51 desktop. It has a Broadcom Netlink BCM 5784M gigabit ethernet PCI E card. Most of the time able to get through the login screen and to the main screen if I click on the wireless settings on the top right-hand corner the system immediately freezes the cursor does not move at all keyboards are unresponsive. I was doing some quick Google searching and I found a suggestion to boot into recovery mode I did this and did a apt-get Distribution update which ran successfully installed then I rebooted into the regular system same thing I'm pretty sure it's the network card because even if I don't click the settings if a network related dialog opens such as disconnection or connection the system again immediately freezes. I'm running Ubuntu 13.04 ** update 1 ** Just was able to use my system for a little bit however when I went into Firefox and hit the web it again froze so obviously a driver problem but I'm not sure how to get drivers for Broadcom which apparently according to the description on stack-overflow is terrible Any ideas? Sorry for lack of punctuation on an ipad.

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  • Why is the Right Keyword So Important?

    If you are in the Internet Marketing business, you have probably asked yourself hundred of times, how much money you can make if you are in first position in Google rankings? Well, you can make thousands, but also you can make nothing. This is because money that you can make depends completely on the keyword that your web site is ranked for.

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  • Failure to boot after suspending

    - by kosmonavt
    I have two issues with Ubuntu 12.04 (upgraded from 11.04, 11.10) on my ASUS K52De laptop. First issue: Booting fails, if it follows a suspension, then a wake-up and finally a shut down. If I realize this sequence, then, during the boot I see the Asus logo and after that I see only a blinking cursor instead of grub2. Then I have to recover grub2. Second issue: Sometimes, my laptop doesn't shut down. It freezes on the Ubuntu logo and I must turn it down with power buttom. Thank you.

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  • Desktop dims when Thunderbird and Firefox are launched

    - by deshmukh
    I am running Ubuntu 12.04 (almost default install regularly updated) Unity interface on ASUS X53U (AMD Brazos Dual Core C60 with 2GB RAM). On launching Thunderbird and Firefox, the application dims and the cursor changes to wait mode. In case of Thunderbird, this is most pronounced with the wait time of up to a minute. Memory status checked with free indicates around 500MB of free memory on such occasions. The OS is stable and I can switch to a different work-space, etc. What could this be? Is this something normal?

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  • How to do pixel per pixel modeling in unity3d?

    - by Kabumbus
    So generally I want to have api like pixels.addPixel3D(new Pixel3D(0xFF0000, 100, 100,100)); (color, position) where pixels is some abstraction on 3d sceen objet.So to say point cloud. It would have grate use in deep space/stars modeling... I want to set each pixel by hand (having no image base or any automatic thing)... So point is modeling something like Or look at alive flash analog here How to do such thing in unity?

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  • Is it possible to get dragging working on a Macbook multi-touch touch pad?

    - by lhahne
    I have a Macbook 5,1. That is to say that it is the only 13 inch aluminium Macbook as the later revisions were renamed Macbook Pro. Two-finger scrolling seems to work fine but dragging doesn't work. In OsX this works so that you point an object, click and keep your finger pressed on the touch pad while slide another finger to move the cursor. This causes weird and undefined behavior in Ubuntu as it seems the driver doesn't recognize this as dragging. Any ideas?

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  • Can't type my username and password, random freeze at login

    - by rakesh
    My netbook runs a dual OS(Windows7 & Ubuntu 12.04). After Ubuntu login screen appears, that’s it, it gets hanged, can't even move my cursor nor type my user name. I had to turn off my system and boot again. Still its not sure that it won't freeze out at login screen again, but this is the temporary solution I have to get into Ubuntu. This freezing at login screen doesn't happen every time, it happens randomly. It seems like I had to enter into Ubuntu purely based on my luck, which is quite irritating. I found many other types of login problem in Ubuntu when I googled, which were quite different from my case. So any1 kindly help me out.

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  • How to prevent my screen from either dimming or the screen-lock starting when watching YouTube?

    - by Steven Roose
    My screen brightness used to dim after a few seconds to preserve battery. This is default in Ubuntu 12.04. However when watching video it should not dim. This works correctly when I watch videos using native applications like VLC. With in-browser video, however, the screen is not prevented from dimming. This is very annoying as you have to move your cursor every 10 seconds or so. I used to use Mac OSX where I had the same dimming settings and Flash videos were taken into account correctly. Anyone an idea how you can make YouTube prevent your screen from dimming?

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  • SDL 2.0: is there a library to create 2D particle effects rapidly?

    - by mm24
    I would like to create an light/explosion particle effect using some in built library. I am used to Cocos2D where there are specific classes that you can simply initialize in a certain position and producing a certain particle effect. Is there a way to do so in SDL 2.0 C++? I have found this tutorial but it seems to go for a "build it yoursefl" solution, which is ok but I do not want to re-invent the wheel if someone else has already built it.

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  • Lubuntu 13.10 selected LX games desktop now can't login

    - by user111667
    I logged out of my normal desktop and selected LX games from the dropdown list and logged back in. This led me to a black screen and now I can't see the login screen in order to change back to my normal desktop. On startup the machine boots normally, the lubuntu splash screen shows up, then it goes to a black screen with nothing on it - not even a mouse cursor. I can bring up a terminal using ctrl+alt+F2. Is there a way via terminal to change my desktop environment back to its previous state? Or alternatively, is there a file I can edit where my preferred desktop is stored? (The machine is dual-booted so I can access the Lubuntu files from LXLE which is installed on a second partition). The machine in question is a Toshiba A200 laptop.

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  • Xubuntu keeps loading on install with usb stick

    - by mattyh88
    I'm trying to install Xubuntu on my computer. I've followed a guide to create a USB bootable drive. I've inserted the USB stick and started the computer. I can see Xubuntu loading and after a minute or 2 it shows me a screen asking me if I'd like to use the live version or if I'd like to install. I choose install. Then on the next screen I select English as language. When I click continue, Xubuntu just keeps loading. It doesn't really freeze as I can still quit and move the cursor. When I clicked quit, I see the live version and all is working just fine. I can browse the internet, etc. What could be wrong?

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  • Ray Picking Problems

    - by A Name I Haven't Decided On
    I've read so many answers on here about how to do Ray Picking, that I thought I had the idea of it down. But when I try to implement it in my game, I get garbage. I'm working with LWJGL. Here's the code: public static Ray getPick(int mouseX, int mouseY){ glPushMatrix(); //Setting up the Mouse Clip Vector4f mouseClip = new Vector4f((float)mouseX * 2 / 960f - 1, 1 - (float)mouseY * 2 / 640f ,0 ,1); //Loading Matrices FloatBuffer modMatrix = BufferUtils.createFloatBuffer(16); FloatBuffer projMatrix = BufferUtils.createFloatBuffer(16); glGetFloat(GL_MODELVIEW_MATRIX, modMatrix); glGetFloat(GL_PROJECTION_MATRIX, projMatrix); //Assigning Matrices Matrix4f proj = new Matrix4f(); Matrix4f model = new Matrix4f(); model.load(modMatrix); proj.load(projMatrix); //Multiplying the Projection Matrix by the Model View Matrix Matrix4f tempView = new Matrix4f(); Matrix4f.mul(proj, model, tempView); tempView.invert(); //Getting the Camera Position in World Space. The 4th Column of the Model View Matrix. model.invert(); Point cameraPos = new Point(model.m30, model.m31, model.m32); //Theoretically getting the vector the Picking Ray goes Vector4f rayVector = new Vector4f(); Matrix4f.transform(tempView, mouseClip, rayVector); rayVector.translate((float)-cameraPos.getX(),(float) -cameraPos.getY(),(float) -cameraPos.getZ(), 0f); rayVector.normalise(); glPopMatrix(); //This Basically Spits out a value that changes as the Camera moves. //When the Mouse moves, the values change around 0.001 points from screen edge to edge. System.out.format("Vector: %f %f %f%n", rayVector.x, rayVector.y, rayVector.z); //return new Ray(cameraPos, rayVector); return null; } I don't really know why this isn't working. I was hoping some more experienced eyes might be able to help me out. I can get the camera position like a champ, it's the vector the rays going in that I can't seem to get right. Thanks.

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  • Top Search Engine Optimization Strategies to Get High Rankings in Google For Your Business Websites

    The search Engine optimization strategies are mainly used to take your website rank to top 10 position. Having a higher rank in a search engine means that your business website will receive more traffic from Google and other search engines. This will eventually also mean that you will be able to have more customers and make more money off of your business, all at no additional cost to you!

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  • Boot Failure: No default or UI configuration directive found Normal install on laptop [closed]

    - by user79920
    I have had Ubuntu on my laptop for quite a while, it's just a standard install, no partitioning off, no wierdness of any other sort, just ubuntu. Today my computer started to lag really bad so I tried to restart it, but after bios loaded I just got an error that said "ERROR: No configuration file found No DEFAULT or UI configuration directive found!" After that it had "boot:" and a cursor, like it expects me to type something. Once again, this is just a normal install on my hard drive, not a VM or booting from USB. It's Ubuntu 12.04 on a Sony Vaio VGN-SZ240P Any help is appreciated!

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  • Can't get Past Login Screen -Graphics Drivers 12.10

    - by mchangun
    Newbie Linux user here. I just installed Ubuntu 12.10, dual booting with Windows 8 Preview Release Build 8400 on a Dell Precision 490 workstation with Nvidia Quandro NVS 55/280 PCI graphics card. I cannot login to Ubuntu - after entering my password and pressing enter, the screen graphics gets garbled for a few seconds, and then the screen goes black showing only the mouse cursor. I suspect it's something to do with my Graphics Card, everything on the GUI login screen feels very sluggish. I know what I have provided here doesn't give you much information, would appreciate it if I could get some guidance on how to provide more useful logs. Thank you.

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  • 5 of the MOST Powerful Search Engine Ranking Tips

    If you want to rank high you need multiple things, here are some search engine ranking tips that will improve the position of your page rank for at least 4 pages. Make sure you spend the extra 15 minutes on optimizing your page for keyword that you have selected. That means, get the keyword density of around 2%, get the keyword mentioned in the first paragraph and the last one.

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  • Terminal shows menu in panel but window is missing

    - by Lai Yu-Hsuan
    I upgraded from 10.10. Then everything worked well except very important one -- my terminal. I try to open my terminal, but no any window popup. I press alt+tab and the windows switcher appears in which there is the terminal. I switch to it, however, nothing happens. I can see the word terminal in my top bar. When I move cursor on it I see the file edit view and so on. But they are useless unless I can find my terminal window. I have no problem with chrome, firefox, eclipse, ubuntu software center, pidgin and many more applications. But without terminal, I'm using a disabled linux.

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  • How does opengl-es 2 assemble primitives?

    - by stephelton
    Two things I'm quite confused about. 1) OpenGL ES 2.0 creates primitives before the vertex shader is invoked. Why, then, does it not automatically provide the vertex shader the position of the vertex? 2) OpenGL ES 2.0 supports glDrawElements(), but it does not support glEnableClientState() or GL_VERTEX_ARRAY, so how can this call possibly be used to construct primitives? NOTE: this is OpenGL ES 2.0, NOT normal OpenGL! Thanks!

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  • Can't install Ubuntu in a HP DV6 Laptop

    - by EApubs
    I just bought an HP DV6 6011tx (link) Laptop... I formated the disk through Windows and prepared for installing Ubuntu... When I insert the live CD, it shows the ubuntu start screen and then everything goes black (no cursor... Just like the screen is switched off (but the system is working)) When i try to install from the USB, it says Live media is not found! Some times it also give a black screen like the CD... Have any idea how to fix this? Thanks

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  • How can I make the unity sidebar visible permanently (as in, in all circumstances)?

    - by Doug
    Yes, I have seen the other similar questions; if this is a duplicate please link me to the question that answer this, because none of them appear to; all appear to only address (1) of the two issues below: There are TWO times when the sidebar will magically vanish: 1) By default when you move your cursor off it and focus on a different app. This is fixable by setting the auto hide behaviour, as described here: How to make the Unity launcher always visible? 2) When you move a window over / under it, or maximize a window. Even when the autohide setting is 'never' this will cause the sidebar to mysterious decide to hide itself. In fact, it doesn't appear what settings you change, this behaviour refuses to change. This is extremely undesired behaviour. I'm using a stock standard 11.10 install.

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  • How can I make KDE faster in Ubuntu 12.04. It's very slow

    - by Rizwan Rifan
    I installed the kubuntu-desktop package in Ubuntu 12.04 LTS, but the problem is KDE responses very slowly. If I click on an application's icon to run it, it appears after 10 seconds and sometimes does not appear at all. It hangs all the time. The cursor is almost impossible to follow because of the lag. I have read on the Internet that Unity uses more memory and CPU than KDE. But on my PC Unity runs smoothly and KDE does not. So what should I do to make KDE as fast, responsive and smooth as Unity? My specifications are as follows: RAM: 1.5 GB (DDR2) Processor: 3 GHz Dual Core Graphics Card: Intel HD graphics with 256 MB memory.

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