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• Get access to files on old HD installation and remove system files

  - by Blake

  I have been fooling with ubuntu for only a year or so. Added SSD installed ubuntu(12.04 64bit) connected old drive with ubuntu on it. everything seems to work well, except for access to some files. I would like to do two things: 1) move the swap file from the SSD to the partition on the HD. 2) remove ubuntu system files and gain full access to my other files. I can still remove the SSD and run ubuntu from the HD, so if I am approaching this incorrectly please advise. Thanks in advance Blake

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• Efficient existing rating system for multiplayer?

  - by Nikolay Kuznetsov

  I would like to add a rating for online version of a board game. In this game there are many game rooms each normally having 3-4 people. So I expect that player's rating adjustments (RA) should depends on Rating of opponents in the game room Number of players in game room and final place of a player Person gets rating increase if he plays more games and more frequently If a person leaves a game room (disconnect) before the game ends he should get punished with a high rating decrease I have found two related questions in here Developing an ELO like point system for a multiplayer gaming site Simplest most effective way to rank and measure player skill in a multi-player environment? Please, let me know what would be the most appropriate existing rating model to refer.

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• Which version control system to use?

  - by deshmukh

  I am looking at using a version control system to ensure that I can go back in time to a particular version for all documents in ~, if I have to. What is the best suited tool for this given that: I am without much experience in version control systems Several files will be plain text files but there will be some Libre-Office files also The tool should: Be easy to set-up, run and maintain Have easy to understand configuration options (what directories to track, for how long, how frequently the changes should be captured, etc.) Ideally have a GUI front also Be able to recover deleted files What is the best/ most widely used tool that will be suitable for me?

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• How are minimum system requirements determined?

  - by Michael McGowan

  We've all seen countless examples of software that ships with "minimum system requirements" like the following: Windows XP/Vista/7 1GB RAM 200 MB Storage How are these generally determined? Obviously sometimes there are specific constraints (if the program takes 200 MB on disk then that is a hard requirement). Aside from those situations, many times for things like RAM or processor it turns out that more/faster is better with no hard constraint. How are these determined? Do developers just make up numbers that seem reasonable? Does QA go through some rigorous process testing various requirements until they find the lowest settings with acceptable performance? My instinct says it should be the latter but is often the former in practice.

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• System does not detect USB pendrives

  - by cshubhamrao

  This USB thing is driving me crazy. 2 problems in time span of 3 hours. Ok I was already trying to cope up with "wrong fs type, bad option, bad superblock" error while mounting FAT Drives when to my amazement I discovered that none of the USB Storage devices showed up in the system Useful outputs: - tail /var/log/syslog: root@shubham-pc:~# tail /var/log/syslog Nov 7 21:41:47 shubham-pc colord: device removed: sysfs-HP-v250w Nov 7 21:41:51 shubham-pc kernel: [ 3441.529542] usb 1-1: USB disconnect, device number 11 Nov 7 21:41:53 shubham-pc kernel: [ 3443.820029] usb 1-2: new high-speed USB device number 14 using ehci-pci Nov 7 21:41:54 shubham-pc kernel: [ 3443.952897] usb 1-2: New USB device found, idVendor=0781, idProduct=5530 Nov 7 21:41:54 shubham-pc kernel: [ 3443.952905] usb 1-2: New USB device strings: Mfr=1, Product=2, SerialNumber=3 Nov 7 21:41:54 shubham-pc kernel: [ 3443.952909] usb 1-2: Product: Cruzer Nov 7 21:41:54 shubham-pc kernel: [ 3443.952913] usb 1-2: Manufacturer: SanDisk Nov 7 21:41:54 shubham-pc kernel: [ 3443.952917] usb 1-2: SerialNumber: 20060876420EC6016847 Nov 7 21:41:54 shubham-pc mtp-probe: checking bus 1, device 14: "/sys/devices/pci0000:00/0000:00:1d.7/usb1/1-2" Nov 7 21:41:54 shubham-pc mtp-probe: bus: 1, device: 14 was not an MTP device

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• Icons missing from launcher, system settings, folders

  - by Giannis Rizos

  Various icons from launcher are missing. The first one is from Home folder menu the second from Terminal the last one from Desktop Switcher. This happened after I upgraded to 11.10 from 11.04. I have created a New (Untitled Folder) folder in my desktop and the icon is missing too. The same occurs in System Settings menu too. Some icons like Appearance, Keyboard Layout are missing too. Sorry but I can't post a screenshot due to my reputation. Any suggestions?

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• Keep getting messages about internal system errors

  - by Tomas Lycken

  I keep getting popups about internal system errors (see screenshot below) on irregular intervals (several times a day), that I don't know what to do about. If I continue through the dialog and try to report the error back to the Ubuntu project, I get a message stating that development on this version of Ubuntu has been completed, and that I should ask for help here if I don't know what to do about it. I don't. If I show the details of the error message, the "executable path" parameter shows /usr/share/apport/apport-gpu-error-intel.py. Is this a bug I should report to Launchpad, or just a configuration error somewhere? If it's a bug, how do I collect the data I (and the devs) need? Update in response to comment: I am running an ASUS N53SN, sporting an Intel Core i7 2630QM CPU and an NVidia GeForce 550M GPU.

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• How can I get a list of installed programs and corresponding size of each in Ubuntu?

  - by Philip Baker

  I would like to have a list of the installed software on my machine, with the disk space consumed by them. A previous answer here says "you can do this via GUI in Synaptic". This doesn't mean anything to me. I don't know what GUI is, and when I click on Synaptic, I do not get anything like the display shown in the answer, i.e. with "Settings ? Preferences" and "Columns and Fonts". In Windows, you just select 'Programs and Applications' in the Control Panel, and the list comes up immediately, with sizes. Is there something similar and simple with Ubuntu? Could the size of each program be included on the list of installed software? This would be the most obvious place to put it.

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• How USB drives goes after system hard drives

  - by raihanchy

  I am using Ubuntu 12.04 LTS. My hard drives usually comes as: sda, with 'sudo blkid' and if I plug-in any USB drive, they comes as: sdb, sdc etc; after sda. That's fine!!! But problem arises after I restart my laptop with connecting those USB drives. They alter and comes first and hard drive goes to the end, like: 'sudo blkid' shows, sda, sdb for USB drives and sdc for hard drives. It's making problem to mount with /etc/fstab. I couldn't find any solutions for this. I would like to have any USB drives after my system hard drives, as in Windows. Please, help me at this point. Thanking you. Raihan

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• Repairing or recreating a bootloader on a multi-booting EFI GPT system

  - by Emre

  Reinstalling Ubuntu messed up my boot loader so I I tried to fix it with boot repair. It detected my OSX installation and asked about removing the "separate boot/EFI". It also said my partition was full despite the fact that it wasn't and asked me to remove stuff. I declined both and proceeded. It's been stuck at the "purge and reinstall the GRUB" stage for half an hour. Is this typical, bearing in mind I have a fast SSD and CPU? Is there a better way to re-install grub on a multi-booting UEFI system? Does my pastebin provide any insight?

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• i cant use ubuntu software manager

  - by hossein

  It's the first time that I use ubuntu and I can't use the ubuntu software manager, when I type update codes in terminal it shows this error Reading package lists... Error! W: GPG error: http://ir.archive.ubuntu.com precise Release: The following signatures were invalid: BADSIG 40976EAF437D05B5 Ubuntu Archive Automatic Signing Key <[email protected]> E: Encountered a section with no Package: header E: Problem with MergeList /var/lib/apt/lists/ir.archive.ubuntu.com_ubuntu_dists_precise_main_binary-i386_Packages E: The package lists or status file could not be parsed or opened.

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• Error while removing the new kernel 2.6.37

  - by Tarek

  Hi! I tried to install the new kernel but something went wrong and I'm trying to remove it now. The error massege is: mhd@Tarek-Laptop:~$ sudo apt-get install -f Reading package lists... Done Building dependency tree Reading state information... Done The following packages will be REMOVED: linux-image-2.6.37-020637-generic 0 upgraded, 0 newly installed, 1 to remove and 9 not upgraded. 1 not fully installed or removed. After this operation, 111MB disk space will be freed. Do you want to continue [Y/n]? y (Reading database ... 188780 files and directories currently installed.) Removing linux-image-2.6.37-020637-generic ... Examining /etc/kernel/postrm.d . run-parts: executing /etc/kernel/postrm.d/initramfs-tools 2.6.37-020637-generic /boot/vmlinuz-2.6.37-020637-generic run-parts: executing /etc/kernel/postrm.d/zz-update-grub 2.6.37-020637-generic /boot/vmlinuz-2.6.37-020637-generic /etc/default/grub: 33: Syntax error: EOF in backquote substitution run-parts: /etc/kernel/postrm.d/zz-update-grub exited with return code 2 Failed to process /etc/kernel/postrm.d at /var/lib/dpkg/info/linux-image-2.6.37-020637-generic.postrm line 328. dpkg: error processing linux-image-2.6.37-020637-generic (--remove): subprocess installed post-removal script returned error exit status 1 Errors were encountered while processing: linux-image-2.6.37-020637-generic E: Sub-process /usr/bin/dpkg returned an error code (1) The previous unsloved error is on this bug. This is my grub configuration file: # If you change this file, run 'update-grub' afterwards to update # /boot/grub/grub.cfg. GRUB_DEFAULT=0 #GRUB_HIDDEN_TIMEOUT=0 GRUB_HIDDEN_TIMEOUT_QUIET=true GRUB_TIMEOUT=10 GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian` RUB_CMDLINE_LINUX_DEFAULT="quiet splash nomodeset video=uvesafb:mode_option=1024x768-24,mtrr=3,scroll=ywrap" video=uvesafb:mode_option=>>1024x768-24<<,mtrr=3,scroll=ywrap" GRUB_CMDLINE_LINUX=" vga=792 splash" # Uncomment to enable BadRAM filtering, modify to suit your needs # This works with Linux (no patch required) and with any kernel that obtains # the memory map information from GRUB (GNU Mach, kernel of FreeBSD ...) #GRUB_BADRAM="0x01234567,0xfefefefe,0x89abcdef,0xefefefef" # Uncomment to disable graphical terminal (grub-pc only) #GRUB_TERMINAL=console # The resolution used on graphical terminal # note that you can use only modes which your graphic card supports via VBE # you can see them in real GRUB with the command `vbeinfo' GRUB_GFXMODE=1024x768-24 # Uncomment if you don't want GRUB to pass "root=UUID=xxx" parameter to Linux #GRUB_DISABLE_LINUX_UUID=true # Uncomment to disable generation of recovery mode menu entries #GRUB_DISABLE_LINUX_RECOVERY="true" # Uncomment to get a beep at grub start #GRUB_INIT_TUNE="480 440 1" thank you for answering.

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• Making more complicated systems(entity-component-system model question)

  - by winch

  I'm using a model where entities are collections of components and components are just data. All the logic goes into systems which operate on components. Making basic systems(for Rendering and handling collision) was easy. But how do I do more compilcated systems? For example, in a CollisionSystem I can check if entity A collides with entity B. I have this code in CollisionSystem for checking if B damages A: if(collides(a, b)) { HealthComponent* hc = a->get<HealthComponent(); hc.reduceHealth(b->get<DamageComponent>()->getDamage()); But I feel that this code shouldn't belong to Collision system. Where should code like this be and which additional systems should I create to make this code generic?

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• How can I install bleachbit in Ubuntu 12.04 LTS?

  - by gunjan parashar

  I'm unable to install bleachbit on my laptop running Ubuntu 12.04. The Ubuntu Software Centre shows that the package is available from the Universe software source and I have the option to "use this source" but after that, it gets stuck while quering software sources. How can I fix this problem? It's occurred to me that perhaps this could be from software sources being deleted in my configuration. If so, can someone tell me the default list of software sources? plz help me out and sorry for my poor english

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• System network service uncompatable after harddrive change and format

  - by NStephenH

  After changing out the hard drive in my dell optiplex 750, and reinstalling ubuntu, my computer tells me the system network services are not compatable. Because my cd drive does not work, I installed this by placing the hard drive in another computer an dusign the mini.iso to install it. I need networking capabilities becuase I want to use this computer as a web server. The on-board ethernet card is a intel 82566 something. If you need more information, and can tell me how to get it, just ask. Please help.

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• How to prevent system to generate log file

  - by shantanu

  My Question is little bit surprising, but i need it. I am using a slow processor laptop, now i found that HDD has some bad sectors and HDD response becomes slow. But disk health is ok(according to smart tools). I can not change my HDD right now. So decide to reduce disk operation. How do i prevent system to generate log file or any other file which are used to keep history? I know LOG file is very important but i don't care it right now. Please help.

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• How to share folders using Oracle, Windows and Ubuntu

  - by Daniel Dang

  I use my laptop TOSHIBA, 4gig RAM, more 40gig free disks spaces and Vista Home Premium 64bits with service pack 2. I installed Oracle VM VirtalBox with success, after I installed UBUNTU version 8 with success ! I need to transfer files between Vista and UBUNTU on the same laptop, how I can do that ? Can I use SAMBA ? I try to use SAMBA but it is not success ! How I can install SAMBA on UBUNTU v.8 ?

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• I am having a error with installing everything!

  - by Justin Baskaran

  Everytime I go to install wine, playonlinux I get this error:![enter image description here][1] Then I get other variations too but this altogether... People on other posts say I have to do a clean install is this right...I dont want to but if I have too I will... Pakcage dependencies cannot be resolved This error could be caused by required additonal software pakcages... details the following packages have unment dependencies: playonlinux

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• (initramfs) unable to find a live medium containing a live file system Toshiba

  - by Filkor

  When I try to boot from my USB it says: (initramfs) unable to find a live medium containing a live file system I know of lots of questions here about this problem... I've tried every solution but nothing worked. I just ask if anyone here who got a Toshiba Sattelite Pro c650 and found the solution, because I simply cant install Ubuntu 10.04 because of this :((( Other spec: - I have USB 2.0 - Changed all possible settings in BIOS. (AHCI..) - ISO is not corrupted (boot is succesful on my other HP Laptop) Thanks. Edit: But XUbuntu works :/

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• Loud fans despite cool system under Linux (but not Windows)

  - by Sman789

  My new desktop computer runs almost silently under Windows, but the fans seem to run on a constantly high setting under Linux. Psensor shows that the GPU (with NVidia drivers) is thirty-something degrees and the CPU is about the same, so it's not just down to Linux somehow being more processor-intensive. I've read that the BIOS controls the fans under Linux, which makes sense given the high fan speeds when in BIOS as well. It's under Windows, when the ASUS AI Suite 3 software seems to take control, that the system runs more quietly and only speeds the fans up when required. So is there a Linux app which offers a similar dynamic control of the fans, or a setting hidden somewhere in the ASUS BIOS which allows the same but regardless of the OS? EDIT - I've tried using lm-sensors and fancontrol, but pwmconfig tells me "There are no pwm-capable sensor modules installed". This is after the sensors-detect command does find an 'Intel digital thermal sensor', and despite the sensors working fine in apps like psensor. Help getting this to work would likely solve the problem.

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• Know Thy Operating System?

  - by AdityaGameProgrammer

  As developers how much time, or do you spend time, In learning the hidden features tricks of your operating system ? How important do you feel is this for productivity in day to day programming? tasks. What do you mean when you list knowledge of an OS in your resume? What are your favorite hidden -less known features For example: A common problem of How can i open the cmd window in a specific location a do it yourself solution in say xp and what to do if something breaks Are these something you look into as and when you find the need to do so?

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• "The system is running in low graphics mode", unable to connect to the Internet

  - by Blah

  When I try to log onto Ubuntu, I get a notice that reads: The system is running in low graphics mode. I searched for a solution and there are a slew of answers. However, many of them seem to suggest reinstalling different things. After pressing Ctrl+Alt+F1 and getting to a terminal, I attempt commands like sudo apt-get install example. Upon doing so I get notices that say things such as could not resolve host which I am assuming means I'm not connected to the Internet. Since I can not connect to the Internet, none of these responses are helpful to me. What can I do?

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• Ubuntu App Submission won't allow the "free" bubble to be checked

  - by Compt

  I am at the final stages of the Ubuntu App Developer Showdown, and I'm right at the point where I am submitting my app. The problem I run in to however, is that even though buy is at $0.00, it will not allow me to click on the "free" button, and keep that configuration saved. So when I go to "preview your app", it shows it saying "USD $0.00 ---- Buy" instead of saying "Free ---- Install". So I was wondering if it makes any difference or not.

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• Document Management System

  - by rjayavrp

  Is there any Document Management System in Ubuntu? I tried Alfresco, RavenDB, Owl, Document Manager. Alfresco, RavenDB are heavy. More than my requirements. Owl having source issues. Document Manager im trying to install. Should keep data on the same machine as I am looking for more of internal purpose. Should allow to upload Zip files as well. If it extracts Zip it will be a great + Should allow to send email to preconfigured email addresses Should allow to upload data of size around 100MB at one go Should maintain history of documents also deleted documents Should allow role based document access. Should be Free :) It should not do any spoofing on data. Documents are confidential. Please share your knowledge. Thanks.

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• Who decides what category the software in the Ubuntu Software Centre is filed under, and who can we report errors to?

  - by coversnail

  I noticed when browsing through the Ubuntu Software Centre that some programs seem to be placed in the wrong categories, for example Pinta, an image editor, appears under Developer Tools (instead of Graphics) in my list of installed programs. Is this a case of the developer incorrectly categorising their software when they uploaded it to the software centre, or does Canonical decided what goes where? And if we notice an obvious mistake who do we inform, the software developer or file a bug somehow?

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