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  • Trying to boot from usb

    - by iron
    I have similar issues but none with the 12.04 build. Im trying this on a dell d610 laptop with a bad hard drive and was told i could just directly boot from the usb drive. Im using an 8g usb drive and i have tried using the uui tool and get this message. SYSLINUX 4.06 EDD 4.06-pre1 Copyright (c) 1994-2011 H.Peter Anvinet al ERROR: No configuration file found No DEFAULT or UI configuration directive found! Then i tried using unetbootin and got the bootup screen with only the default option and it would say auto boot with a 10 sec countdown and start over again. I do have the boot sequence for usb first.

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  • Unable to connect to wireless network

    - by Mike
    A real newbie here. Just downloaded Ubuntu 12.10, put on USB stick and have booted it on my other PC after modifying the boot sequence to boot from USB before hard drive where Windows XP lives. Have no problems with Windows and my wireless but not with Ubuntu. The PC is a Dell Latitude D630 laptop. According to Windows XP , the wireless card is a Dell Wireless 1490 Dual Band WLAN Mini-Card, my IP address is 192.168.0.193, subnet mask is 255.255.255.0, assigned by DHCP, SSID is HOME , type 802.11 and default gateway is 192.168.0.1. Ok, back to booting from USB and TRY option, I am Editing Network connections, I have created/configured "Wireless connection 1" with SSID of HOME and the only other thing I have changed is on the "Editing IPV4 routes for Wireless connection 1 I have enterred 192.168.0.193 , netmask 255.255.255.0 and gateway 192.168.0.1 Anyways , no go. Could use some help. Thanks, Mike from Montreal

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  • Jumping a sprite while moving in a Bezier action

    - by marcg11
    I'm creating a game and I need the sprite to jump (move up and down basically) while it's moving on a bezier path so it moves vertically while it still follows the path. If I do this while it's moving along the bezier path: [mySprite runAction:[CCJumpBy actionWithDuration:0.1 position:ccp(0,0) height:10 jumps:1]]; It jumps vertically but instantly it returns to the position on the path. What I want is to jump relative to the path. Anyone knows something about it? It would looks something like this: the curve is a sequence of CCBezierBy's by the way. Thanks.

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  • How can I reach over 100% volume with a keyboard shortcut?

    - by suli8
    sometimes the sound of videos isn't enough for me. so i reach the sound indicator , over sound preferences and change it to a level higher than 100%. the question is how can i do it from the keyboard? now i can control the volume from the keyboard but it's maximum is 100%. is there a way to do that? EDIT 1: how to use amixer to do it? (as Lyrositor suggested) EDIT2: the closest answer , as Jo-erland, suggested is to set a hotkey to bring up the gnome-volume-control, and then to use left and right arrows to change volume also beyond the 100% mark. any other suggestions, to make this 1 step only? is it possible to set a hotkey to do a sequence of commands ?

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  • How does PHP internally represent strings?

    - by Jim Thio
    UTF8? UTF16? Do strings in PHP also keep track of the encoding used? Let's look at this script for example. Say I run: $original = "??????????????"; What actually happens? Obviously I think $original will not contain just 7 characters. Those glyphs must each be represented by several bytes there. Then I do: $converted = mb_convert_encoding ($original , "UTF-8"); What will happen to $converted? How will $converted be different from $original? Will it be just the exact same byte sequence as $original but with a different encoding?

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  • The underlying mechanism in 'yield return www' of Unity3D Game Engine

    - by thyandrecardoso
    In the Unity3D game engine, a common code sequence for getting remote data is this: WWW www = new WWW("http://remote.com/data/location/with/texture.png"); yield return www; What is the underlying mechanism here? I know we use the yield mechanism in order to allow the next frame to be processed, while the download is being completed. But what is going on under the hood when we do the yield return www ? What method is being called (if any, on the WWW class)? Is Unity using threads? Is the "upper" Unity layer getting hold of www instance and doing something?

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  • Why does my computer just keep restarting while trying to install Ubuntu 13.04 (x86) from USB alongside Windows 7?

    - by Sumit Chahal
    I have checked the other questions, but none of them match my problem (the ones that do don't have satisfactory answers). I downloaded the Ubuntu 13.04 iso and burned it to my USB device following the given instructions. I was also able to boot the Ubuntu setup from it by changing the boot sequence so that the USB device is now at the top. But I am only able to use the "trial" version of Ubuntu. Every time I tick "Install Ubuntu alongside Windows" and click "Continue", the computer just restarts and I see the same Try-Ubuntu-or-install-it menu. I have tried pressing any key when that little icon appears at the bottom, but it is not at all helpful. I also read somewhere that I should eject my USB device after I click "Continue", but doing so just makes the computer run Windows 7 instead.

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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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  • How do I change the color of the screen that is displayed before the login screen?

    - by Jake Newkirk
    How do I change the color that the system displays just before the login screen is displayed? Here is the boot sequence on my machine in the order that things are displayed: The BIOS screen is flashed. A Black screen is displayed for a few seconds. My Plymouth splash screen is displayed. Purple screen is displayed for a few seconds (This is what I want to change). Finally, the login screen is displayed. Please let me know if you require any additional information while addressing this problem and as always, thank you for your time.

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  • Do reactive extensions and ETL go together?

    - by Aaron Anodide
    I don't fully understand reactive extensions, but my inital reading caused me think about the ETL code I have. Right now its basically a workflow to to perform various operations in a certain sequence based on conditions it find as it progresses. I can also imagine an event driven way such that only a small amount of imperative logic causes a chain reaction to occur. Of course I don't need a new type of programming model to make an event driven collaboration like that. Just the same I am wondering if ETL is a good fit for potentially exploring Rx further. Is my connection in a valid direction even? If not, could you briefly correct the error in my logic?

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  • Flowchart for solving programming problems

    - by nurne
    I noticed that every developer implements a somewhat different flowchart for solving programming problems. By flowchart I mean a defined system of techniques that the developer goes through in a certain sequence, trying to solve the problem at hand. Some examples for techniques: Google "how to..." or "... tutorial". Search the java/msdn/apple/etc API doc for the specific class or method. Search in stack overflow the exact problem with some tags like [iphone]/[java] etc. Take a nap and let the subconscious work. Debug. Draw the algorithm or system. Google the logged error message. Ask a colleague or manager. Ask a new question in stack overflow. From your experience, what is the best flowchart for solving a programming problem?

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  • Are these GitHub features implemented in BitBucket?

    - by doug
    I recently joined a company that, while using git for version control, uses BitBucket as remote/master + git interface for projects. This is my first exposure to BitBucket. There are a couple of GitHub features I rely heavily on in my daily workflow and I am trying to find their counterpart in BitBucket or else how I can recreate the same functionality if it is not provided out-of-the-box. In particular, in GitHub I rely heavily on tags (which I realize reside in git) to link commits to issues (feature request, bug report, etc.); in addition, given projects specs are often decomposed into milestones, I use the milestone feature in GitHub Issues to track progress towards our project milestones (ie, in GitHub a milestone is comprised of a sequence of issues, and the commit tagged with the last remaining issue under that Milestone, causes that Milestone to be annotated as completed. I suspect this workflow can be recreated using Jira, which my new employer also uses, but before trying that, I want to learn if it's already implemented and I just can't find it.

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  • Behavior tree implementation details

    - by angryInsomniac
    I have been looking around for implementation details of behavior trees, the best descriptions I found were by Alex Champarand and some of Damian Isla's talk about AI in Halo 2 (the video of which is locked up in the GDC vault sadly). However, both descriptions fall short of helping one actually create a BT, one particular question has been bugging me for a while. When is the tree in a behavior tree evaluated? Furthermore: If the tree is in the middle of executing a sequence of actions (patrolling waypoints) and a higher priority impulse comes in (distraction sound) , how to switch to that side of the tree seamlessly without resorting to a state machine like system and if it is decided that the impulse was irrelevant (the distraction is too far away to affect this guard), how to go back to the last thing that the guard was doing ? I have quite a few questions like this and I don't wish to flood the board with separate queries so if you know of any resource where questions like these can be answered I would be very grateful.

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  • plotting histograms in ROOT with varying variable names

    - by user66890
    I am not sure how to phrase this question correctly, but this is what I am trying to do. A single histogram can be plotted using cern ROOT with a following command, (TH1F*)electron->Draw(); But I have tens of histograms named in a sequence, such as electron1, elecron2, electron3, etc, and I want to write a simple loop to plot them all. I tried using sprintf and a simple for loop, but ROOT doesn't like it. char name[20]; (TH1F*)electron->Draw(); for(int j=0;j<5;j++){ sprintf(name, "%s%d","electron",j); (TH1F*)name->Draw("same"); } What am I doing wrong? Thanks in advance.

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  • How can I reach over 100% volume with a keyboard shortcut?

    - by suli8
    sometimes the sound of videos isn't enough for me. so i reach the sound indicator , over sound preferences and change it to a level higher than 100%. the question is how can i do it from the keyboard? now i can control the volume from the keyboard but it's maximum is 100%. is there a way to do that? EDIT 1: how to use amixer and scripts to do it? (as Lyrositor suggested) EDIT2: the closest answer , as Jo-erland, suggested is to set a hotkey to bring up the gnome-volume-control, and then to use left and right arrows to change volume also beyond the 100% mark. any other suggestions, to make this 1 step only? is it possible to set a hotkey to do a sequence of commands ?

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  • How does PhP internally represent string?

    - by Jim Thio
    UTF8? UTF16? Does the string in PhP also keep tracks the encoding used for that string? A good answer would give me a sample of Let's look at this script for example. Say I do $original = "??????????????"; What actually happen? Obviously I think $original will not contain just 7 characters. Those glyps must each be represented by several bytes there. Then I do $converted= mb_convert_encoding ($original , "UTF-8") What will happen to $converted? How will $converted be different than $original? Will it be just the exact same byte sequence with $original but with different encoding? Or what?

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  • Problems with the colors on my screen. How can I check if it's a hardware problem?

    - by Ingo Gerth
    On my EEE PC netbook some colors are not displayed properly. Specifically, dark gradients such as in the window title do not look very smooth, but rather look like a sequence of a couple of different colors. This is especially visible when opening a menu, for example the "File" menu in Firefox. As you know this one is black, and it looks terrible on my screen. It is not just black, but the colors look really graded and far from a smooth gradient or anything. Now I am wondering: Is this a hardware or software issue? And how can I check this? If it should be a fixable problem I think it would be worth another question. Note that I am using Natty. If my problem description is not good enough I can try to take a photo.

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  • Converting large files in python

    - by Cenoc
    I have a few files that are ~64GB in size that I think I would like to convert to hdf5 format. I was wondering what the best approach for doing so would be? Reading line-by-line seems to take more than 4 hours, so I was thinking of using multiprocessing in sequence, but was hoping for some direction on what would be the most efficient way without resorting to hadoop. Any help would be very much appreciated. (and thank you in advance) EDIT: Right now I'm just doing a for line in fd: approach. After that right now I just check to make sure I'm picking out the right sort of data, which is very short; I'm not writing anywhere, and it's taking around 4 hours to complete with that. I can't read blocks of data because the blocks in this weird file format I'm reading are not standard, it switches between three different sizes... and you can only tell which by reading the first few characters of the block.

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  • Why are UUID / GUID's in the format they are?

    - by Xeoncross
    Globally Unique Identifiers (GUID) are a grouped string with a specific format which I assume has a security reason. A GUID is most commonly written in text as a sequence of hexadecimal digits separated into five groups, such as: 3F2504E0-4F89-11D3-9A0C-0305E82C3301 Why aren't GUID/UUID strings just random bytes encoded using hexadecimal of X length? This text notation contains the following fields, separated by hyphens: | Hex digits | Description |------------------------- | 8 | Data1 | 4 | Data2 | 4 | Data3 | 4 | Initial two bytes from Data4 | 12 | Remaining six bytes from Data4 There are also several versions of the UUID standards. Version 4 UUIDs are generally internally stored as a raw array of 128 bits, and typically displayed in a format something like: uuid:xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx

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  • Abandoment to blame?

    - by Larsenal
    I have a code snippet for an app that users are loading as a 3rd party script on their site. The general sequence is as follows: Site loads "http://www.example.com/foo.js" foo.js does stuff 1 to 2 seconds later, foo.js loads bar.js Now in a perfect world, I'd want to see matching counts for the calls to foo.js and bar.js. However, bar.js loads only about 94% of the time. I'm wondering how much of this discrepancy might be attributable to site abandonment given the fact that bar.js is delayed by 1 or 2 seconds. I posted here instead of StackOverflow since I think it's more a question about what would be typical time on page when users abandon the page.

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  • How to render a retro-like pixel graphics from 3d models?

    - by momijigari
    I was wondering if there's a possibility to render a retro-pixel-like graphics from 3d model in real time? I'm talking about the Starfarer-like graphics. I know it's hand drawn, and it's 2d. But if I need a 3d objects with the same aesthetics? I'm currently working with Flash. But I don't need any ready-solutions, I just want to understand the principle from any other platform if there is one. So if anybody met anything like this I would appreciate your help. (If it's not possible to do in real time, I could at least pre-render a sequence of sprites. It would be much better than creating hundreds of hand-drawn ones)

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  • The Dreaded Startup Repair Loop on Win 7

    - by HighAltitudeCoder
    For most people, upgrading to Windows 7 has been a relatively painless process.  Not me.  I am in the unlucky 1% or less who had a somewhat less pleasant experience.  First, I cloned my entire onto a larger (and much faster) solid state hard drive, only experiencing minimal problems. Then, I bought the Retail version of Windows 7 Ultimate, took a deep breath and... oh yeah, I almost forgot - BACK UP THE COMPUTER.  The next morning I upgraded to Win 7 and everything seemed fine, until... I rebooted the system, the nice Windows 7 launch graphics come up, it's about to launch and AWWW, are you kidding me?!?!  Back to the BIOS splash screen?  Next comes the sequence of failure - attempt repair - unable to repair - do you want to wipe your hard drive decisions. Because I purchased the retail version, a number is provided where I could call Microsoft Tech support.  When I did, they instructed me to click "Install" from my installation CD, which did not work.  When I tried the "Upgrade" option, it reaches an impasse, telling you that yoiu have a newer version of Win 7, and thus cannot Upgrade.  If you choose "Install" you willl lose everything... files, programs, EVERYTHING.  Or at least this is what it tells you.  I was not willing to take the risk. To make things worse, I had installed a new antivirus software application before I realized my system was unstable (Trend Micro Titanium Internet Security), and this was causing additional problems. One interesting thing, and the only saving grace as it turns out, was that my system WOULD successfully reboot into the OS if I chose to restart it, rather than shut it down.  If I chose to shut down, I would have to go through the loop again until I was given the option to restart. As it turned out, I needed to update my BIOS.  I assumed that since I had updated my BIOS a long time ago to settings that were stable under Windows Vista Ultimate x64, I incorrectly expected Win 7 to adopt the same settings and didn't expect there to be any problems.  WRONG. My BIOS had a setting to halt the boot cycle if various kinds of errors were detected.  Windows Vista didn't care about this, but forget it under Windows 7.  I turned immediately corrected that BIOS setting.  Next, there were the two separate BIOS settings: enable USB mouse and enable USB keyboard.  The only sequence of events that would work were to start my reboot process over from stratch with a hard-wired non-usb keyboard and mouse.  Whent the system booted under these settings, it doesn't detect any errors due to either the mouse or keyboard, and actually booted for the first time in a long while (let me tell ya, that's an amazing experience after fiddling with settings for two entire weekends!) Next step: leave your old mouse and keyboard connected, but also connect your other two devices (mouse, keyboard) that use USB connections.  During the boot cycle, the operating system will not fail due to missing requirements during startup, and it will then pick up the new drivers necessary to use your new hardware. If you think you are in the clear here, you are wrong.  The next VERY IMPORTANT step is to remember to change your settings in the BIOS upon next startup.  Specifically, yoiu will need ot change your BIOS to enable USB mouse and enable USB keyboard input.  If you don't, Windows will detect an incompatibility upon the next startup, and you will be stuck once again in the endless cycle of reboot/Startup Repair/reboot/Startup Repair, without ever reaching a successful boot. Here's the thing - the BIOS and the drivers registered in Win 7 need to match.  If they don't, you're going to lose another weekend worrying and fiddling, all the while wondering if you've permanently damaged your hard drive beyond repair. (Sigh).  In the end, things worked out.  I must note that it is saddening to see how many posts there are out there that recommend just doing a clean install, as if it's the only option.  How many countless poor souls have lost their data, their backups, their pictures and videos, all for nothing other than the fact that the person giving advice just didn't know what to do at that point? My advice to you, try having a look at your BIOS settings first and making sure Win 7 can find your BIOS settings, and also disabling in your BIOS anything that might halt your system boot-up process if it encounters errors.

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  • Unable to boot OS X after installing Ubuntu 12.04

    - by A G
    I installed Ubuntu 12.04 on my MB (aluminium late 2008). After installing Ubuntu I am unable to boot into OS X. Sequence of events: Install reFit on OS X Install Ubuntu on a partitioned drive. I also installed grub. Now when I boot my MB only the grub menu shows up. When I select OS X under grub I see a black screen for a while and the machine restarts (when selecting OS X 64 bit) or it hangs indefinitely(OS X 32 bit). Could you please help? Link to output of boot info script. http://paste.ubuntu.com/1028017/

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  • Abandoment to blame for the last JavaScript file not always being loaded?

    - by Larsenal
    I have a code snippet for an app that users are loading as a 3rd party script on their site. The general sequence is as follows: Site loads http://www.example.com/foo.js foo.js does stuff 1 to 2 seconds later, foo.js loads bar.js Now in a perfect world, I'd want to see matching counts for the calls to foo.js and bar.js. However, bar.js loads only about 94% of the time. I'm wondering how much of this discrepancy might be attributable to site abandonment given the fact that bar.js is delayed by 1 or 2 seconds. I posted here instead of StackOverflow since I think it's more a question about what would be typical time on page when users abandon the page.

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  • What can I change/investigate where the install does not complete?

    - by tunist
    I have already successfully installed Ubuntu 10.10 on my laptop and it works fine. I attempted to get my desktop PC to dual boot Windows and Ubuntu but found that neither the 32 or 64 bit install images will boot/install successfully. The startup script locks on 'initializing core #2' (or 1 or 3).. once I saw it say 'ok' at the end but it still locks there. I have tried to change the boot sequence by inserting 'debug' and 'acpi-off' into txt.cfg in both isolinux and syslinux folders but no changes were obvious during the boot.. as far as it got. The pc is built with an abit IP35 motherboard and nvidia 8600GT gfx card. Does anyone have any suggestion of what else I can change to get the install working?

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