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  • How to enlarge ubuntu partition

    - by Vineet
    I installed Ubuntu 11.10 recently by making a 5.6GB partition from the Ubiquity installer. I wanted to upgrade to 12.04, so I opened the Update Manager and clicked on 'Update Packages' (I was following this guide) After clicking, it said that there was too little space available. So, I want to enlarge my Ubuntu partition so that there is appropriate space for upgrading. I downloaded Gparted. I read another guide which said my computer won't boot if I resize the Ubuntu partition because '/boot will be misplaced and I will have to repair GRUB2 myself.' So how do I do this easily? Thank you in advance.

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  • What makes an application memory bandwidth bound?

    - by TheLQ
    This has been something that's been bothering me for a while: What makes an application memory bandwidth bound? For example, take this monstrosity of a computer that calculated the 5 trillionth digit of pi (and later 10 trillionth digit). I was surprised that they choose the lower but faster 98 GB RAM at 1066 MHz instead of the larger but slower 144 GB at 800 MHz. This is especially surprising considering they are using 22 TB HD array to store the results from computation; more RAM means less need for hard drives. Maybe its because I don't write applications for HPC servers, but how would RAM be the bottleneck? Are there any other non-HPC applications that usually run into this problem?

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  • how to get started with a game engine [closed]

    - by user19343
    I'm a 3rd year Computer Science student and I would like to get started with building a game engine or at least tinkering with making one. I am curious if there are any good resources to use to get started. I get the idea behind different pieces in the engine, but I'm not really sure about how they fit together. Is there anything out there to help teach me the skeleton of a game engine? So far I've been playing with the idea of a game engine that uses modules built in a circular linked list so that each can do it's computing and then pass move to the next piece of the engine to work.

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  • Mouse cursor lag after lock screen, 64 bit 12.04

    - by Bill Jones
    Recently I have noticed that when I return to my computer after it has been "locked" for a while, the mouse pointer has significant lag. The cursor position appears to only update a few times a second. Moving the mouse results in the pointer "following" the movement in a jerky kind of way, and then continuing for some fraction of a second after I have stopped using the mouse. Replacing the mouse has no effect. (I have two differently branded and constructed usb optical mice). Plugging either mouse into a different usb port has no effect. Once the problem was resolved by "suspending" the system, and then re-starting it with the power switch, but this does not work every time. So far, the only fool-proof fix is to shut the system down and re-start it (re-boot). I have tried this suggested fix. It had no effect.

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  • How can I my video card work on Ubuntu 12.04?

    - by Cyriak Burton
    I've recently installed Ubuntu 12.04 on my desktop computer. In order to install Ubuntu, I had to unplug my video card because It was giving me problems, didn't allow me to install Ubuntu. So I unplug it, installed Ubuntu anyway, everything worked as charm, but now and I need to plug it again, but it doesn't work. Here some photos of the problem: Screenshot of the problem #1 Screenshot of the problem #2 Appear that screen and nothing else... I didn't install any driver (I'm kinda noob), in Windows 7 all worked fine, so the problem is with Ubuntu, compatibility problem I guess. Video Card: Zotac GeForce GT 240 O.S.: Ubuntu 12.04 (w/GNOME 3.2) Memory: 2 Gb HDD: 110 Gb Processor: Intel Pentium D 2.80 Ghz PLEASE HELP!!!

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  • Disabled WiFi but it keeps re-enabling itself; want it to stay disabled

    - by Mike Uresti
    I have an Alienware X51 desktop with a wireless card, I have it connected via ethernet and want to permanently disable WiFi from ever using itself. When running Windows, I go to device manager and rightclick-disable the Wireless card and that takes care of my problem. Is there a similar method using Ubuntu 14.04? For now, I click on the network icon in the system tray and uncheck 'Enable wifi' but it seems to turn itself back on as I use my computer, I think I have the incident isolated to something with Steam. It seems like after I start the Steam client it always is re-enabled. Hopeful answer: Just disable/remove/block wireless card from ever working.

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  • How do I set up a headless server via VNC?

    - by Joe
    I'm trying to configure my system to run headless and access the desktop via VNC when necessary. It seems everytime I unplug the monitor while ubuntu is running, the system freezes and I am forced to do a hard shut down. If I start the computer up without a monitor it won't boot up all the way and I am still unable to access the desktop through VNC. I am able to VNC to it while there is a monitor attached to it. Automatic login is enabled. I want to VNC into my ubuntu machine without a monitor.

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  • How to setup an intranet in ubuntu using wifi?

    - by ved2254
    I want to set up a VPN on my laptop but I don't know what and how to set it. My requirements are : Intranet with a customizable list of shared folders. Intranet outsourced via computer wifi. Possibly assigning individual private IP addresses to all connected. Facility to share internet (if hassel free). Can I do this using Gnome Network Manager or do I need another program? I'll be happy even if I get one folder to share for the time being and no internet if I could only outsource one file/folder.

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  • Multicasting and VMWare

    - by John Breakwell
    Cracked a Multicasting problem this evening for one of my Canadian Tweeple. They wanted to mulitcast some MSMQ messages to another machine but nothing was arriving in the listening queue. A local queue could be configured to listen to the particular IP address/port in use and messages would arrive, though. Looking at the network traffic, nothing was going onto the wire for the IP address/port pair until they looked at traffic to the VMWare adapter. The machine had a virtual machine to simulate a remote computer and when they changed the setup from NAT to Bridge, multicasting burst into life.

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  • udev rule group ownership not working

    - by Tirithen
    I have added a udev rule for my Arduino, but the symlink gets the ownership "root root" instead of "root dialout". $ cat /etc/udev/rules.d/47-Arduino.rules SUBSYSTEM=="usb", ATTR{idVendor}=="2341", ATTR{idProduct}=="0001", MODE="0666", SYMLINK+="arduino", GROUP="dialout" $ ls -la /dev/ar* lrwxrwxrwx 1 root root 15 sep 8 11:02 /dev/arduino -> bus/usb/003/007 $ ls -la /dev/bus/usb/003/007 crw-rw-r-- 1 root dialout 189, 262 sep 8 11:12 /dev/bus/usb/003/007 My user is a member of the group "dialout" but I still get permission denied error when I'm trying to communicate with the device. There are no problems when I'm using the "default" device "/etc/ttyACM3". $ ls -la /dev/ttyACM3 crw-rw---- 1 root dialout 166, 3 sep 8 11:12 /dev/ttyACM3 I have tried to restart both the udev service and reboot my computer. How can I fix this?

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  • Places Folders Open in Archive Manager

    - by PansophySR
    Am relatively new to Ubuntu. Currently running 10.10, which was an upgrade from 10.4, which was an upgrade from 9.10, which was a fresh install. Have never compressed anything in Ubuntu, but because I wanted to use the contents of a large folder on a Windows machine, I installed 7zip. Using Places, I navigated to the folder I wanted to compress, right-clicked, chose Compress, selected 7-zip and started the compression. This took many minutes to complete (the final 7z file is over 2.2 GB), but when I copied it to the windows machine, 7-zip handles it fine. However, now when I open Places, the Home Folder, User folder, Documents, Music, Pictures, Videos and Downloads all open the Archive Manager which gives an error message that it "Could not create the archive" because the "Archive type not supported." If I open Places/Computer choose the usr folder from places on the left and right-click/Properties on any of the folders, Music for instance, there is no place to change the "open with." Anyone know how to get this working again.

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  • About to graduate from good school without any progamming skills

    - by newprint
    Not sure if it is good place to ask this question, but found this section to be suitable. I am about to graduate from a good school (in the US) with Computer Science degree, having good grades and high GPA. I have no freaking clue how to write a good program, how to properly test it... nada, zero. We were never been taught how to write software. Ye, sure the Comp. Architecture class is important, and I can tell you a lot about how MIPS processor works, and I can tell you about Binary Trees and Red-Black Trees and running time of operations in Big Oh, but it has nothing to do with programming in "real" life. For god sake, none of my classmates know how to use STLs or write templated code! To be honest, I found that many of my classes to be waste of time. What should I do ? How to step into real life and learn how to program ?

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  • Tips to Increase PC Performance in Windows 7

    The Windows 7 Task Manager is a solid tool that gives you an overview of what is happening in terms of running processes on your computer. While the Task Manager may appear simple to the naked eye it can be used in several ways to help identify possible sources of problematic performance. This tutorial will offer some tips that you can employ with the Task Manager to help improve your PC s performance.... Rolling out Agile Development? Try now! Explore Agile on an integrated platform for Agile and traditional development

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  • trying to install ubuntu touch to nexus 4 - can't connect device (14.04 in virtual box on mac)

    - by Fiona Cox
    I'm trying to install Ubuntu touch to a nexus 4. I've followed all the steps so far, downloaded the packages and gotten the phone ready, but now I got to the step of connecting it to the computer [under 'Enable USB Debugging'], but it's not listed when I try $ adb devices (I tried the 'adb kill-server' command first too, but nothing is listed). I'm sure it's something simple I'm forgetting, but can anyone help please? I have debugging enabled. Running Trusty in VirtualBox on MacBook. Thanks!

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  • Music player freezes when I switch to one of the terminal window until I login to that terminal

    - by Guanidene
    Whenever I switch to a terminal window from my X window, (by pressing Ctrl+Alt+1) my music player (banshee) running in X freezes until I login to the terminal window. Once I login into it (or either switch back to my X with or without logging into it) the music player resumes from the point it freezed. However, I observed that when am transferring files from my laptop to another computer over ssh and if I switch to one of the terminal windows, the transfer does not pause even if I don`t login to the termianl window. I just wanted to know what could possibly be the reason for such a discrimination.

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  • Trouble with Samba Domain

    - by Arkevius
    I'm having a bit of trouble setting up this Samba domain correctly. I'm getting an Access Denied error when trying to add a Windows XP machine to the domain. I'll go through my scenario in detail, but for those of you wanting a TLDR summary it'll be at the bottom of this post. I have HP Proliant server with Ubuntu 12.04 LTS installed. For this particular environment, I need this server to act as a PDC, file server, and print server. I began by updating and upgrading the packages (of course). Then went to install samba, gnome-desktop, wine, and cpanm. Samba was, of course, for the PDC and file/print services. The GUI was needed because a certain software has to be installed on there that needs a GUI. Wine was needed because the software is Windows-native. And cpanm was for a perl script I have running. For Samba, I went into the smb.conf file and enabled domain logons, changed the workgroup/domain name, the logon script for a per-group basis (netlogon/%g), enabled the netlogon and profiles share, and setup a couple of custom shares for the file service. The printer was added later, and seems to be working just fine. I then restarted the services, and used the net groupmap command to ensure my unix groups were mapped correctly to the Windows groups. After this, I went to a Windows box, and was able to successfully join the domain without a problem. After some fidgeting with the software to get it running on the win boxes from the server (it's a records management system program, which stores it's database files on the server), I went to add another computer to the domain. But now it's saying Access Denied. Before when I had this trouble it was because I forgot to add the group "machines" so Samba could create machine accounts. Thinking this was the case, I manually created the machine account to test this theory. However, it would still give me an Access Denied error. That must mean it has something to do with permissions now, correct? I've been fighting with this server for the past two weeks. If it's not one thing that;s wrong, then it's something else completely different. This would be the third time I've actually reinstalled everything to start over. I'll post snippets of my system settings below. If anything else is needed, just say the word and I'll gather up the info. The unix group 'domadmin' is the Domain Admins group. Samba Administrator account administrator:x:1000:1000:Administrator,,,:/home/administrator:/bin/bash Adminstrator's groups administrator adm cdrom sudo dip plugdev lpadmin sambashare domadmin crimestar Samba's Configuration FIle (a snippet anyways) [global] workgroup = CITYPD server string = BPDServer dns proxy = no log file = /var/log/samba/log.%m max log size = 1000 syslog = 0 panic action = /usr/share/samba/panic-action %d security = user encrypt passwords = true passdb backend = tdbsam obey pam restrictions = yes unix password sync = yes passwd program = /usr/bin/passwd %u passwd chat = *Enter\snew\s*\spassword:* %n\n *Retype\snew\s*\spassword:* %n\n *password\supdated\ssuccessfully* . pam password change = yes map to guest = bad user domain logons = yes logon path = \\%L\srv\samba\profiles\%U logon script = logon.bat add machine script = /usr/sbin/useradd -g machines -c "%u machine account" -d /var/lib/samba -s /bin/false %u domain master = yes usershare allow guests = yes [netlogon] comment = Network Logon Service path = /srv/samba/netlogon/%g guest ok = yes read only = yes browseable = no [profiles] comment = All Printers browseable = no path = /var/spool/samba printable = yes guest ok = no read only = yes create mask = 0700 [print$] comment = Printer Drivers path = /var/lib/samba/printers browseable = yes read only = yes guest ok = no write list = root, @lpadmin [crimestar] comment = "Crimestar DB" path = /srv/crimestar/db valid users = @domadmin, @crimestar admin users = administrator writeable = yes guest ok = no browseable = no create mask = 0666 directory mask = 0777 [crimestarfiles] path = /home/administrator/.wine/drive_c/crimestar admin users = administrator browseable = yes ls -la on /srv/samba/profiles drwxrwxrwx 2 root machines 4096 Nov 21 15:27 . drwxr-xr-x 4 root root 4096 Nov 21 15:28 .. ls -la on /srv/samba/netlogon drwxr-xr-x 6 root root 4096 Nov 21 15:30 . drwxr-xr-x 4 root root 4096 Nov 21 15:28 .. drwxr-xr-x 2 root root 4096 Nov 21 15:30 crimestar drwxr-xr-x 2 root root 4096 Nov 21 18:13 domadmin drwxr-xr-x 3 root root 4096 Nov 21 15:30 guests drwxr-xr-x 2 root root 4096 Nov 21 15:29 users GrouMap list Domain Users (S-1-5-21-2978508755-2341913247-928297747-513) -> users Domain Admins (S-1-5-21-2978508755-2341913247-928297747-512) -> domadmin Domain Guests (S-1-5-21-2978508755-2341913247-928297747-514) -> nogroup TLDR I'm getting an Access Denied error message while trying to join a windows box to a samba domain, even after I successfully joined another computer without a problem. System settings / files are quoted above. Anyone have any ideas or suggestions?

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  • How seriously would an employer take a job application from an applicant studying at the Open University [closed]

    - by user866190
    I ask the question because I am considering applying to a traditional bricks and mortar university to do mathematics, computer science or software engineering. However I am in my late twenties and have a young family so I am seriously considering going down the Open University route and working in the software development industry at the same time. If I do attend Open University, I will definitely study Mathematics. I fell in love with PHP and the common web technologies a few years back and it has slowly progressed into learning C++, Java and also Python. If I spent the next year increasing my knowledge of those languages whilst studying at the Open University, would an employee consider a self taught programmer who is 20% of the way through a Bsc in Mathematics?

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  • Can I make a bootable USB flash drive for Mac from Windows

    - by Patrick
    Problem: MacBook hard drive crashed and is ruined. I need to work on a music assignment on a program only available for Mac OS X and Ubuntu, and will not be able to get a new hard drive for the Mac before the assignment is due. I only have non-administrator access to Windows XP and 7 computers. Can I make a USB drive with Ubuntu on it so I can use my MacBook with this? Can I create this from a Windows computer? Please give detailed steps, if possible, for I am a noob when it comes to computers, and especially Linux.

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  • Internal HDs that don't contain the OS aren't accessable unless I try to manually browse them

    - by Hrafn
    So I have 4 internal hard drives, one that contains the OS (Ubuntu 12.04), all ext4. After starting the computer up, and without having tried to access the drives (File manager, terminal etc) it seems like the drives haven't been mounted. If I go into the "Disks" utility I see that the disks haven't been mounted. Programs that try to access the HD's during startup throw an error. For example my music player can't find the library, my note taking software can't find the database etc. But after opening the drive in a file manager everything works. I've checked SMART on all the disks and everything is a ok. Any and all ideas would be appreciated.

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  • Finding a good University [closed]

    - by Liamh101
    I've currently been searching for good Universities to study Software Engineering or Computer Science at. The three Universities I've chosen so far are: Brighton University (This is my main pick so far) Plymouth Uni Manchester Metropolitan I would just like to know from people who have actually studied at these places to see if there all that there cracked up to be and I'm not going to be wasting up to four years of my life with a course that isn't very well taught. Would love to hear from people and if there are any Universities in the UK that you are/have studied at and are finding really good for learning Programming that would be nice too. Thanks!

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  • What to do with my "unmounted drive"?

    - by Taylor Guistwite
    I just recently followed the tutorials on http://www.ubuntu.com/download/ubuntu/download for installing the ubuntu server onto my 1TB Seagate External. I was planning on using this to install it on my macbook and in these instructions it states to preform this line of code Run diskutil unmountDisk /dev/diskN (replace N with the disk number from the last command; in the previous example, N would be 2) Now my HD prompts "The disk you inserted was not readable by this computer". Would I just run diskutil mountDisk /dev/diskN in order to be able to access all my files again? here is a screenshot to the instructions i followed http://i17.photobucket.com/albums/b97/hello_screamo/Screenshot2011-11-11at113914AM.png

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  • How should I access frame buttons from a controller in an MVC approach?

    - by Loris
    I'm developing an italian card game using the mvc pattern. I have the class GameFrame that contains the view. The user's card are buttons (JButton objects). I have 3 controllers: GameController: to control the game in general. Contains the game loop. HumanPlayerController: to control the user input ComputerPlayerController: contains the AI of the computer PlayerController: is an interface with the makeTurn() method. It's implemented by HumanP.C. and ComputerP.C. HumanPlayerController implements ActionListener too. But what is the right way to access to the GameFrame buttons? I need it for understand which card was chosen. GameFrame and HumanPlayerController are in different packages. Should i make the JButtons public?

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  • Ubuntu 12.04 USB wireless not recognized

    - by Justin
    I have searched for awhile now for ways to fix my problem but have come up with nothing. I am running Ubuntu 12.04 on my desktop computer. I am unable to find the Enable Wireless button in the network area. It just doesn't appear. Everything else works on my laptop. I believe it's the drivers for my USB network adapter. I also have no way of using a wired connection at the moment. Thanks for any help!

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  • external disk dont work on ubuntu

    - by Skirki
    i have problem with in my ubuntu: when i connect external imation apollo disc i dont see a file system. Disk is working because in windows OS on this same computer it works as well. when i typed dmesg i got following logs [12913.260078] usb 4-1: new low speed USB device using ohci_hcd and address 15 [12913.440072] usb 4-1: device descriptor read/64, error -62 [12913.730058] usb 4-1: device descriptor read/64, error -62 [12914.020085] usb 4-1: new low speed USB device using ohci_hcd and address 16 [12914.200082] usb 4-1: device descriptor read/64, error -62 [12914.490150] usb 4-1: device descriptor read/64, error -62 [12914.780064] usb 4-1: new low speed USB device using ohci_hcd and address 17 [12915.200070] usb 4-1: device not accepting address 17, error -62 [12915.380081] usb 4-1: new low speed USB device using ohci_hcd and address 18 [12915.800065] usb 4-1: device not accepting address 18, error -62 [12915.800100] hub 4-0:1.0: unable to enumerate USB device on port 1 i trying to fix that by use commands: cd /sys/bus/pci/drivers/ehci_hcd echo -n "0000:00:02.1" unbind but it did not match the result and i don't have any other idea

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  • Why do I have to reconnect my usb router cable?

    - by Searock
    I have a Iball Baton ADSD2+ Router. It's working fine but the problem is when I boot into Ubuntu I have to unplug the usb cable and then plug it again, then it starts working. Why do I have to re connect my usb cable? Let me know if you need more details. Edit : I am using a direct connection. I mean to say I don't have to enter a username or password. I am connected to internet as soon as I start my router. The problem is if I start my router before my computer I have to re connect my usb cable. Thanks.

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