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• Update Manager Partitions

  - by user170585

  Perhaps this is completely stupid, but here's my inquiry: I have Ubuntu 12.04 installed on an external hard drive. On that HD there are 4 partitions. Two for operating systems, two for swap (unnecessary but I like it that way). The actual computer itself has Windows 7. If I use the Update manager to update to 12.10 or even 13.04, would the new Ubuntu install itself on the same partition it already was on? The other operating system I'm running on the Hard Drive is Lubuntu, for when I need to run Linux on older computers, if that matters. Thanks, Adam

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• Why does Ubuntu Freezes on ASUS K42DY laptop with RADEON HD6470M Graphics Card?

  - by ix3

  Hi,I have an ASUS K42DY laptop with AMD Phenom II x2, 8 GB Ram , 500 GB Hard Drive and has a didicated ATI RADEON HD 6470M Graphics Card and I'm running Ubuntu 12.04 LTS 64bit on it. I have installed GNOME 3 and also followed this Make Ubuntu look like Mac OS X. I have also installed apps from the software center, getdeb & playdeb all of which worked fine. However, I noticed that Ubuntu freezes after inactivity let's say 1-3hrs. I have already set power setting to never standby or hibernate. This is completely annoying because all I can do is log-out via ctrl+alt+del or manually shut down and reboot my laptop. What should I do? By the way, this happens on all shells Unity, Gnome (even with the basic) and Cairo Dock.I set Swap Space at 8GB during installation. Any help will be appreciated. Thanks!

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• Dual boot w/ windows 7

  - by Aduff

  So my PC had windows XP and Win 7 on it and I went into the XP partition and installed Ubuntu 12.10 over it being sure to use 90% of the XP partition for the / mount and 10% for the swap. It installed but when I boot the computer it doesn't give me the option of choosing between 7 or Ubuntu, just booting right to the Linux distro. Should I have installed it in 7 over the XP partition? I can see the drive in Ubuntu that contains all the 7 files. How can I recover my 7 access?

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• Dual Boot not recognizing new hard drive

  - by Grove

  I am a complete Linux newb..which will become obvious shortly. The story: I wanted to dual boot with Ubuntu. I already had windows on 1 hard drive (320gb), and I wanted Ubuntu on a 2nd hard drive (2tb). I setup the partitions using the "Something else" option - I left the first hard drive alone, and put a swap and a ext4 partition on the 2nd hard drive. When it asked me where the bootable device was, I put the first hard drive. The problem: Now that Ubuntu is installed and grub lets me pick which os to boot to, I boot to ubuntu JUST FINE. BUT when I go to the home folder and look at devices, the only drive showing is the 320 gb/old hard drive that windows was installed on. I can not see the 2 TB hard drive anywhere. This is strange because I setup the Ubuntu partition to be the 2 TB hard drive and I thought I installed ubunto on that partition. Thank you for your time and patience :)

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• resizing partitions

  - by venetin

  I have the following configuration: sda1 1 GB maybe fat32 (windows recovery partition) sda2 40 GB ntfs(windows drive c) with boot flag sda3 around 100GB ntfs(storage partition) sda4 extended partition:sda5 10 GB ext4 partition sda6 1 GB linux swap I want to make this changes: sda2 30 GB resize(decrease size with 10 GB) sda3 around 100GB(move and maybe decrease size with 4-5 GB) sda4 around 20-22 GB (move and increase size with 10-15GB) sda5 around 20 GB (move and increase size with 10-12 GB) sda6 2 GB (move and increase size with 1 GB) Is it safe to do this operations?Will i lose grub? I will do the changes with gparted on puppy linux live usb. Thanks

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• Recovering a deleted partition after installing Ubuntu?

  - by al akhfiya

  I have a serious problem. I Installed Ubuntu 13.04 on my Laptop. I format all partitions (Windows)/(Erase all data and Install Ubuntu):( . How do I recover my accidentally lost Windows partitions after installing Ubuntu?. I try using PartitionWizard and Testdisk. But cannot recovery partition, Partitionwozard and Testdisk only detected the linux partition (Linux/Ext4 and Linux/Swap). I hope the answer. Please help. and Sorry for my English is not good. Thanks :)

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• Clean install of 12.04 won't boot from HDD

  - by MarchingKazoo

  Downloaded 12.04.2. Made CD. Machine boots from CD as expected. Installed onto HD. Upon reboot, "Read error" message appears. Upon booting from CD, the HD appears as expected: One partition for Ubuntu, taking up about 12 gig, the rest empty. Lather, rinse, repeat five times. Results of "sudo fdisk -l": Disk /dev/sda: 200.0 GB, 200049647616 bytes 255 heads, 63 sectors/track, 24321 cylinders, total 390721968 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: 0x000dfa3e Device Boot Start End Blocks Id System /dev/sda1 * 2048 386596863 193297408 83 Linux /dev/sda2 386598910 390721535 2061313 5 Extended /dev/sda5 386598912 390721535 2061312 82 Linux swap / Solaris Should this be complicate? Seems no.

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• Ubuntu is unresponsive and scrolling is very jerky

  - by peterpipe

  I'm new to Ubuntu. I've been using 12.04LTS for over a week now. For 3 days it was great but now I'm having a number of problems. I'm using an Acer Aspire one D255 it has a 250GB HDD and a 1GB Memory. My browser is Firefox. Pages freeze occasionally and I wait for over 10 minutes and have to use the computer's 'off' button. Pages crash. On facebook some pictures don't load and I have to close down and restart a couple of times. Scrolling can sometimes be very jerky. Downloading software has become a problem and I have a 'no entry' sign in the top taskbar. I've looked at this page for some help but the words used and the explanations are not helpful to someone like me who has little knowledge of this. Please - 'Ubuntu for dummies'. I'd like to continue using Ubuntu but am close to giving up.

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• Grub cannot boot Windows 7 loader entry on 3tb drive

  - by twicejr

  It fails and it says 'cannot find device'. It will work again if I reinstall Windows, and use something like EasyBCD. But I'd like grub as a loader only, can someone help me out here? My system has a regular BIOS (p35-ds4 mainboard) so no UEFI support. Previously ran Windows 8 alongside ubuntu 13.04, now wanted windows 7 again with ubuntu 13.10. I am using disk /dev/sda. 3000.6 GB, 3000591900160 bytes 255 head, 63 sectors/track, 364801 cylinders, 5860531055 sectors Sector size (logical/fysical): 512 bytes / 4096 bytes Device Begin End Blocks ID System /dev/sda1 2048 419432447 209715200 83 Linux /dev/sda2 419432448 436013055 8290304 82 Linux swap /dev/sda3 436015102 1576339455 570162177 5 extended Partition 3 does not start on a fysical sector limit. /dev/sda4 * 1576339456 5860530175 2142095360 7 HPFS/NTFS/exFAT /dev/sda5 436015104 855443455 209714176 7 HPFS/NTFS/exFAT /dev/sda6 855445504 1576339455 360446976 7 HPFS/NTFS/exFAT

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• How to resize(increase) a root+home cloned partition from a smaller hdd?

  - by saulo

  Here is my story: I had a hd failing so I cloned it with dd to larger 500gb hd. It seemed to have worked well, but I have all this unallocated free space at the end of the disk (230gb). I tried to used gparted from a liveUSB to allocate all this space to my root+home partition (other than that I only have a small extended partition with the swap). It won't let me do this. I can only create another partition, or allocate the free space to the extend partition. I can however reduce the size of the root+home partition since I wasn't using all the space Is there a way to put this free space to my root+home partition after all? Or do I have to go with another partition. If so I'd like to separate my home from the root, reduce the root partition and create a ext4 logical home partition. What would be the best safest way to do this? Thanks so much in advance, aloha

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• In facebook pictures bdon't always load properly and scrolling is very jerky

  - by peterpipe

  I'm new to Ubuntu. I've been using 12.04LTS for over a week now. For 3 days it was great but now I'm having a number of problems. I'm using an Acer Aspire one D255 it has a 250GB HDD and a 1GB Memory. My browser is Firefox. Pages freeze occasionally and I wait for over 10 minutes and have to use the computer's 'off' button. Pages crash. On facebook some pictures don't load and I have to close down and restart a couple of times. Scrolling can sometimes be very jerky. Downloading software has become a problem and I have a 'no entry' sign in the top taskbar. I've looked at this page for some help but the words used and the explanations are not helpful to someone like me who has little knowledge of this. Please - 'Ubuntu for dummies'. I'd like to continue using Ubuntu but am close to giving up.

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• Javascript newbie, how to choose between window.URL.createObjectURL() and window.webkitURL.createObjectURL() based on browser

  - by Rohith Raveendran

  From the firefox developer website I know that firefox use objectURL = window.URL.createObjectURL(file); to get url of file type, but in chrome and other webkit browsers we have window.webkitURL.createObjectURL() for detecting url. I don't know how to swap this functions based on browser engines, and I need it to be worked on both browsers (Chrome and firefox) https://developer.mozilla.org/en/DOM/window.URL.createObjectURL

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• Create a screen like the iPhone home screen with Scrollview and Buttons

  - by Anthony Chan

  Hi, I'm working on a project and need to create a screen similar to the iPhone home screen: A scrollview with multiple pages A bunch of icons When not in edit mode, swipe through different pages (even I started the touch on an icon) When not in edit mode, tap an icon to do something When in edit mode, drag the icon to swap places, and even swap to different pages When in edit mode, tap an icon to remove it Previously I read from several forums that I have to subclass UIScrollview in order to have touch input for the UIViews on top of it. So I subclassed it overriding the methods to handle touches: - (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event { //If not dragging, send event to next responder if (!self.dragging) [self.nextResponder touchesBegan:touches withEvent:event]; else [super touchesBegan:touches withEvent:event]; } In general I've override the touchesBegan:, touchesMoved: and touchesEnded: methods similarly. Then in the view controller, I added to following code: - (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event { UITouch *touch = [touches anyObject]; UIView *hitView = (UIView *)touch.view; if ([hitView isKindOfClass:[UIView class]]) { [hitView doSomething]; NSLog(@"touchesBegan"); } } - (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event { // Some codes to move the icons NSLog(@"touchesMoved"); } - (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event { NSLog(@"touchesEnded"); } When I run the app, I have the touchesBegan method detected correctly. However, when I tried to drag the icon, the icon just moved a tiny bit and then the page started to scroll. In console, it logged with 2 or 3 "touchesMoved" message only. However, I learned from another project that it should logged tonnes of "touchesMoved" message as long as I'm still dragging on the screen. (I'm suspecting I have the delaysContentTouches set to YES, so it delays a little bit when I tried to drag the icons. After that minor delay, it sends to signal back to the scrollview to scroll through the page. Please correct me if I'm wrong.) So if any help on the code to perform the above tasks would be greatly appreciated. I've stuck in this place for nearly a week with no hope. Thanks a lot.

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• Can we use JCR API over MySQL?

  - by n_mysql

  Apache Jackrabbit (or the JCR API) helps you separate the data store from the data management system. This would mean that every data store provider would have to implement the JCR API for his own data store. The question is JCR implemented for MySQL? Can we use the JCR API over MySQL? I want to truly abstract out where i store my content, so that tomorrow if i don't want to use a relational DB i can swap it out with the file system with ease.

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• ggplot2 heatmap : how to preserve the label order ?

  - by Tg

  I'm trying to plot heatmap in ggplot2 using csv data following casbon's solution in http://biostar.stackexchange.com/questions/921/how-to-draw-a-csv-data-file-as-a-heatmap-using-numpy-and-matplotlib the problem is x-label try to re-sort itself. For example, if I swap label COG0002 and COG0001 in that example data, the x-label still come out in sort order (cog0001, cog0002, cog0003.... cog0008). Is there anyway to prevent this ? I want to it to be ordered as in csv file thanks pp

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• jQuery - Shadowbox rebinding

  - by teepusink

  Hi, How do I bind / initialize Shadowbox to content loaded by jQuery using AJAX? Right now shadowbox works when I first come into the site. However, when I swap the content with a new one loaded through AJAX, these new batch of content doesn't do the shadowbox popup, instead it just redirect to the content. I have Shadowbox.init(shadowbox_conf); in the success but it doesn't seem to do the trick. Thanks, Tee

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• JavaScript question -- onMouseOver event

  - by alex_wang

  Why doesn't this piece of code swap images on mouse-over as intended?: <a href="#" onMouseOver=" if (document.the_image.src == '01.jpg') { document.the_image.src = '02.jpg'; } else if (document.the_image.src == '02.jpg') { document.the_image.src = '03.jpg'; } else { document.the_image.src = '01.jpg'; } "> Some image</a><br>

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• javascript: why to "sign-prefix" a variable?

  - by harald

  hello, i'm currently looking at a little 3rd-party javascript library and i see a lot of "sign-prefixed" variables in it: function_call(+value); i know, that you can swap the sign, if you prefix a variable with '-', but why to prefix something with a '+' -- it doesn't do anything to the value, no? thanks in advance!

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• Single-Stage vs Two-Stage Animation for iPhone Apps?

  - by Devoted

  What are single-state and two-stage animation for rotating an iPhone window? This is the "error" message I get in the Debugger Console (nothing crashes): Using two-stage rotation animation. To use the smoother single-stage animation, this application must remove two-stage method implementations. I was working through the book "Beginning iPhone Development: Exploring the iPhone SDK" by Apress (Dave Mark, Jeff LaMarche) on the Swap Project.

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• Marshal.PtrToStructure (and back again) and generic solution for endianness swapping

  - by cgyDeveloper

  I have a system where a remote agent sends serialized structures (from and embedded C system) for me to read and store via IP/UDP. In some cases I need to send back the same structure types. I thought I had a nice setup using Marshal.PtrToStructure (receive) and Marshal.StructureToPtr (send). However, a small gotcha is that the network big endian integers need to be converted to my x86 little endian format to be used locally. When I'm sending them off again, big endian is the way to go. Here are the functions in question: private static T BytesToStruct<T>(ref byte[] rawData) where T: struct { T result = default(T); GCHandle handle = GCHandle.Alloc(rawData, GCHandleType.Pinned); try { IntPtr rawDataPtr = handle.AddrOfPinnedObject(); result = (T)Marshal.PtrToStructure(rawDataPtr, typeof(T)); } finally { handle.Free(); } return result; } private static byte[] StructToBytes<T>(T data) where T: struct { byte[] rawData = new byte[Marshal.SizeOf(data)]; GCHandle handle = GCHandle.Alloc(rawData, GCHandleType.Pinned); try { IntPtr rawDataPtr = handle.AddrOfPinnedObject(); Marshal.StructureToPtr(data, rawDataPtr, false); } finally { handle.Free(); } return rawData; } And a quick example structure that might be used like this: byte[] data = this.sock.Receive(ref this.ipep); Request request = BytesToStruct<Request>(ref data); Where the structure in question looks like: [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Ansi, Pack = 1)] private struct Request { public byte type; public short sequence; [MarshalAs(UnmanagedType.ByValArray, SizeConst = 5)] public byte[] address; } What (generic) way can I swap the endianness when marshalling the structures? My need is such that the locally stored 'public short sequence' in this example will be little-endian for displaying to the user. I don't want to have to swap the endianness on a structure-specific way. My first thought was to use Reflection, but I'm not very familiar with that feature. Also, I hoped that there would be a better solution out there that somebody could point me towards. Thanks in advance :)

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• Would someone mind giving suggestions for this new assembly language?

  - by Noctis Skytower

  Greetings! Last semester in college, my teacher in the Computer Languages class taught us the esoteric language named Whitespace. In the interest of learning the language better with a very busy schedule (midterms), I wrote an interpreter and assembler in Python. An assembly language was designed to facilitate writing programs easily, and a sample program was written with the given assembly mnemonics. Now that it is summer, a new project has begun with the objective being to rewrite the interpreter and assembler for Whitespace 0.3, with further developments coming afterwards. Since there is so much extra time than before to work on its design, you are presented here with an outline that provides a revised set of mnemonics for the assembly language. This post is marked as a wiki for their discussion. Have you ever had any experience with assembly languages in the past? Were there some instructions that you thought should have been renamed to something different? Did you find yourself thinking outside the box and with a different paradigm than in which the mnemonics were named? If you can answer yes to any of those questions, you are most welcome here. Subjective answers are appreciated! hold N Push the number onto the stack copy Duplicate the top item on the stack copy N Copy the nth item on the stack (given by the argument) onto the top of the stack swap Swap the top two items on the stack drop Discard the top item on the stack drop N Slide n items off the stack, keeping the top item add Addition sub Subtraction mul Multiplication div Integer Division mod Modulo save Store load Retrieve L: Mark a location in the program call L Call a subroutine goto L Jump unconditionally to a label if=0 L Jump to a label if the top of the stack is zero if<0 L Jump to a label if the top of the stack is negative return End a subroutine and transfer control back to the caller exit End the program print chr Output the character at the top of the stack print int Output the number at the top of the stack input chr Read a character and place it in the location given by the top of the stack input int Read a number and place it in the location given by the top of the stack Question: How would you redesign, rewrite, or rename the previous mnemonics and for what reasons?

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• Double Buffering for Game objects, what's a nice clean generic C++ way?

  - by Gary

  This is in C++. So, I'm starting from scratch writing a game engine for fun and learning from the ground up. One of the ideas I want to implement is to have game object state (a struct) be double-buffered. For instance, I can have subsystems updating the new game object data while a render thread is rendering from the old data by guaranteeing there is a consistent state stored within the game object (the data from last time). After rendering of old and updating of new is finished, I can swap buffers and do it again. Question is, what's a good forward-looking and generic OOP way to expose this to my classes while trying to hide implementation details as much as possible? Would like to know your thoughts and considerations. I was thinking operator overloading could be used, but how do I overload assign for a templated class's member within my buffer class? for instance, I think this is an example of what I want: doublebuffer<Vector3> data; data.x=5; //would write to the member x within the new buffer int a=data.x; //would read from the old buffer's x member data.x+=1; //I guess this shouldn't be allowed If this is possible, I could choose to enable or disable double-buffering structs without changing much code. This is what I was considering: template <class T> class doublebuffer{ T T1; T T2; T * current=T1; T * old=T2; public: doublebuffer(); ~doublebuffer(); void swap(); operator=()?... }; and a game object would be like this: struct MyObjectData{ int x; float afloat; } class MyObject: public Node { doublebuffer<MyObjectData> data; functions... } What I have right now is functions that return pointers to the old and new buffer, and I guess any classes that use them have to be aware of this. Is there a better way?

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• awk or perl file editing & manipulation

  - by paul44

  I have a standard passwd file & a usermap file - which maps unix name (eg jbloggs) with AD account name (eg bloggsjoe) in the format: jbloggs bloggsjoe jsmith smithjohn ... etc. How can I edit the passwd file to swap the original unix name with the AD account name so each line of the passwd file has the AD account name instead. Appreciate any help for a perl learner.

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• Problem implementing sorting algorithm in C with an array of structs

  - by dilog

  Well here is my little problem, first my code: struct alumn { char name[100]; char lastname[100]; int par; int nota; }; typedef struct alumn alumn; int bubble(alumn **arr, int length) { int i,j; alumn *temp; for (i=0; i<=length-2; i++) { for (j=i+1; j<=length-1;j++) { if ((*arr)[i].nota > (*arr)[j].nota) { temp = arr[i]; arr[i] = arr[j]; arr[j] = temp; } } } } int main(int argc, char **argv) { alumn *alumns; ... here goes some other code ... bubble(&alumns,totalAlumns); return 0; } My problem is that this algorith is not sorting anything. I'm having a hard time doing the swap, i tried everything but nothing works :( . Any help??? struct alumn { char name[100]; char lastname[100]; int par; int nota; }; typedef struct alumn alumn; int bubble(alumn **arr, int length) { int i,j; alumn *temp; for (i=0; i<=length-2; i++) { for (j=i+1; j<=length-1;j++) { if ((*arr)[i].nota > (*arr)[j].nota) { temp = arr[i]; arr[i] = arr[j]; arr[j] = temp; } } } } int main(int argc, char **argv) { alumn *alumns; ... here goes some other code ... bubble(&alumns,totalAlumns); return 0; } My problem is that this algorith is not sorting anything. I'm having a hard time doing the swap, i tried everything but nothing works :( . Any help???

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• Swapping out the center JPanel in a BorderLayout

  - by derekerdmann

  I have a JPanel sitting inside the center position of a BorderLayout of a JFrame. How can I swap out the current JPanel for a new one?

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