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  • Xubuntu is not seeing my Win8 OS in the installer

    - by Logan Serman
    When I install Xubuntu, I get the message "This computer currently has no detected operating systems. What would you like to do?". I just did a fresh install of Win8 yesterday, and I guess it used EFI because I have a 104MB partition that is of type 'efi'. Is there any way to install Xubuntu next to Win8, and avoid any boot problems? Or can I switch Win8 to BIOS from EFI, without having to re-install Windows? I went through a ton of boot problems and re-installing yesterday... I really don't want to have to do it again.

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  • Screen Lag/Running Slow

    - by Nick M
    I am having trouble with Ubuntu 12.10. Everything is working fine, although there is a slight problem. It seems to lag every once in a while, as in I will move the mouse, then about two seconds later the cursor will actually move on the screen. Is there any way to fix this? This is my first day using Ubuntu and I put it on a computer I built myself. I don't have much experience so a detailed answer would be very much appreciated.

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  • SQL SERVER – Importance of User Without Login

    - by pinaldave
    Some questions are very open ended and it is very hard to come up with exact requirements. Here is one question I was asked in recent User Group Meeting. Question: “In recent version of SQL Server we can create user without login. What is the use of it?” Great question indeed. Let me first attempt to answer this question but after reading my answer I need your help. I want you to help him as well with adding more value to it. Answer: Let us visualize a scenario. An application has lots of different operations and many of them are very sensitive operations. The common practice was to do give application specific role which has more permissions and access level. When a regular user login (not system admin), he/she might have very restrictive permissions. The application itself had a user name and password which means applications can directly login into the database and perform the operation. Developers were well aware of the username and password as it was embedded in the application. When developer leaves the organization or when the password was changed, the part of the application had to be changed where the same username and passwords were used. Additionally, developers were able to use the same username and password and login directly to the same application. In earlier version of SQL Server there were application roles. The same is later on replaced by “User without Login”. Now let us recreate the above scenario using this new “User without Login”. In this case, User will have to login using their own credentials into SQL Server. This means that the user who is logged in will have his/her own username and password. Once the login is done in SQL Server, the user will be able to use the application. Now the database should have another User without Login which has all the necessary permissions and rights to execute various operations. Now, Application will be able to execute the script by impersonating “user without login – with more permissions”. Here there is assumed that user login does not have enough permissions and another user (without login) there are more rights. If a user knows how the application is using the database and their various operations, he can switch the context to user without login making him enable for doing further modification. Make sure to explicitly DENY view definition permission on the database. This will make things further difficult for user as he will have to know exact details to get additional permissions. If a user is System Admin all the details which I just mentioned in above three paragraphs does not apply as admin always have access to everything. Additionally, the method describes above is just one of the architecture and if someone is attempting to damage the system, they will still be able to figure out a workaround. You will have to put further auditing and policy based management to prevent such incidents and accidents. I guess this is my answer. I read it multiple times but I still feel that I am missing something. There should be more to this concept than what I have just described. I have merely described one scenario but there will be many more scenarios where this situation will be useful. Now is your turn to help – please leave a comment with the additional suggestion where exactly “User without Login” will be useful as well did I miss anything when I described above scenario. Reference: Pinal Dave (http://blog.sqlauthority.com) Filed under: PostADay, SQL, SQL Authority, SQL Query, SQL Security, SQL Server, SQL Tips and Tricks, T SQL, Technology

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  • Deleted windows partition, now I can't get into Ubuntu

    - by Alejandro
    Back story: I installed ubuntu with wubi. I had windows on one NTFS partition, then I made a new NTFS partition in which I put wubi in and where My ubuntu OS was born. Eventually I moved /home into another partition and made a swap partition, but I digress. I deleted My original NTFS partition where windows is not thinking it would not matter but now I can't get into ubuntu. And the weird thing is that when I boot my computer I still see the option to boot into both windows and ubuntu. When I try to boot into windows, It tries to fix stuff and never succeds. When I try to boot into ubuntu, it shows me "cannot find GRLDR in all devices. Press CTRL+ALT+DELETE to restart". so, what do you guys think? I just want ubuntu running again, with all my stuff in /home there and all my system preferences how I like them.

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  • If not now, then when?

    - by Chris Gardner
    Originally posted on: http://geekswithblogs.net/freestylecoding/archive/2013/10/25/if-not-now-then-when.aspx The time has been flying by this year. It seems like only yesterday that I mentioned the gorillagator, a simple construct of confusion to try to draw attention to my message. In reality, that message was sent over a month ago. During that time, the hours slipped to days and days to weeks. Many exciting things have happened to myself; I'm sure many exciting things have happened to you. I'm also sure that many terrifying things have happened to children and their families. 62 children enter treatment at a Children's Miracle Network Hospital every minute. That's nearly 60,000 children since I sent the last email. To put that number in perspective, that is more than the population of Greenland. If we expand that to the past year, they have been nearly 550,000 children treated. That is almost the population of Huntsville, Decatur, and all their suburbs combined. Over the past 4 years, I have raised a little more than $3,000 for Children's Hospital of Alabama. As a result, I received a call from the organizers of Extra Life thanking me for my dedicated work and informing me that I was the top supporters for Children's Hospital of Alabama ... with my measly three grand. We can do much better than that. It may sound like I'm trying to have fun by playing games for 24 hours. It is more than that. It is me using my time and body as a catalyst. It is me putting my passion to work for a cause. It is me turning my love into something tangible. I have been campaigning and fighting to give these children a chance for years. I have been asking you to help me support these children and families. I've been putting in countless hours of talking to people, impassioned emails, and carefully constructed tweets. I have been fighting with cutting edge, and sometimes expensive, technology to try to provide live streams of my marathons. I yearly put my body through 24 (and, this year, 25) hours of no sleep. I do this to represent the countless hours these families sit awake at their children's side. All I ask is a few minutes on a website and a few dollars. These few minutes and few dollars go a long way help people that are experiencing circumstances that only occur in our nightmares. I also ask that you take one extra step. Forward this plea to those that you know. I can only reach a small fraction of a percentage of the people that may be able to help. Together, we can reach the world. I raise money for Children's Hospital of Alabama. As this message branches out, people may wish to support a hospital closer to their area. I have included a link to the list of people that have dedicated their time and have received no donations. Find someone on the list supporting your local hospital and give them a donation. Let them know that their time and effort are appreciated. Together, we can do something great. Together, we can make a difference. Together, we all stand tall. Thank you. You can get more information at http://www.extra-life.org and http://childrensmiraclenetworkhospitals.org/" My donation page is http://www.extra-life.org/participant/cgardner The list of participants without donations is http://www.extra-life.org/index.cfm?fuseaction=donorDrive.eventParticipantList&page=629&eventID=512

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  • Ubuntu Server 12 HD full

    - by julio
    I have a server with Ubuntu Server 12, today it stops some services and I found some comments about full disk, so I made a df -h S.files Size Used Disp Use% /dev/mapper/ubuntu-root 455G 434G 0 100% / udev 1,7G 4,0K 1,7G 1% /dev tmpfs 689M 4,2M 685M 1% /run none 5,0M 0 5,0M 0% /run/lock none 1,7G 0 1,7G 0% /run/shm /dev/sda1 228M 51M 166M 24% /boot overflow 1,0M 0 1,0M 0% /tmp Then I tried to delete some files but I made it from a windows remote computer just right clic and "delete" option on files, but HD still full. Is in Ubuntu Server any Trash file or what could be happeing?

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  • Running Windows 98 in 2013 with Modern Apps and Web

    - by Akemi Iwaya
    Do you ever have those moments when curiosity for the sake of fun gets a hold on you? Perhaps that curiosity gets focused on computer-related “what ifs” such as how well would a very old operating system handle being used with today’s modern apps and web? Nazmus Shakib Khandaker decided to find out how well Windows 98 could and would do in 2013. Have you tried something similar to this? Do you know of any individuals who are holding on to an older operating system no matter what? Share your experiences in the comments! Running Windows 98 in 2013 with Modern Web and Apps [YouTube]     

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  • Batch file to Delete Old Virtual Directories.

    - by Michael Freidgeim
    On some servers we have many old Virtual Directories created for previous versions of our application. IIS user interface allows to delete only one in a time. Fortunately we can use IIS scripts as described in How to manage Web sites and Web virtual directories by using command-line scripts in IIS 6.0 I've created batch file DeleteOldVDirs.cmd rem http://support.microsoft.com/kb/816568 rem syntax: iisvdir /delete WebSite [/Virtual Path]Name [/s Computer [/u [Domain\]User /p Password]] REM list all directories and create batch of deletes iisvdir /query "Default Web Site" echo "Enter Ctrl-C  if you want to stop deleting" Pause iisvdir /delete "Default Web Site/VDirName1" iisvdir /delete "Default Web Site/VDirName2" ...   If the name of WebSite or Virtual directory contain spaces(e.g  "Default Web Site"), don't forget to use double quotes. Note that the batch doesn't delete physical directories from flie system.You need to delete them using Windows Explorer, but it does support multiple selection!

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  • Unable to recognize hard drive after replacing a drive

    - by Peter Schriver
    I have a Poweredge 830 that I had been using with 1 OS Sata drive and 3 data drives. One of the drives had some failing sectors so I replaced it with a different drive. For some bizarre reason the computer would not reboot so I disconnected all of the media drives and did a clean reinstall on the OS drive. Only the boot drive and one of the media drives are now recognized by my Bios. Drive 0 and 2. Drive 1 and 3 are listed in the Bios as "Unkown Device" Any help would be appreciated I think there may be something wrong with the install. For some reason when I attempt to change the display it says I have a laptop.If you think a reinstall is in order I will try that.

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  • How to get interest in programming especially in java and android [closed]

    - by aditi
    I am new in this community. I just completed my Btech in Computer science, I have interest towards programming especially java. I started studying java but i am little bit slow in logic and understanding the concepts. I have some good books of java but when doing the program i am losing my confidence because of the logic issues. I have some doubts How can i improve my logical and coding skills HOw to get more and more interest in programming (like i heard about some programmers who are geeks, i mean programming machines). Is there any shortcut for studying programming Please provide some suggestions as i knew this forum has lots of good programmers. Please share ur thoughts and how you people improving ur logics. Any help is appreciated

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  • GNU GRUB version 1.99-21ubuntu3, DOES NOT WORK!

    - by Arthur
    I'm new to Ubuntu, I installed it but when I try to start it, tells me that I need to run commands from bash-like and they can be shown by tab, when I press tab shows me the commands but then I type them and nothing happens, I have to reset my computer and the same thing goes on. This is what it says: GNU GRUB version 1.99-21ubuntu3 Minimal bash-like line editing is supported. For the first word, TAB lists possible command completions. Anywhere else TAB lists possible device or file completions. And nothing happens from there, can you tell what I need to do now? THANKS AGAIN!

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  • Partitioning: SSD + HDD Encrypted

    - by wegsehen
    I have a new computer and thinking about partitioning. Situation is this: 60GB SSD 1TB HD On my laptop I'm using full encryption but what do you suggest for encryption? I heard, encryption is bad for SSDs. So I first thought of making SSD / and HDD als /home/ but then I'd be losing advantages of the SSD. Because all config-files would be on the HDD. Other way would be: SSD: / 15 GB unencrypted /home encrypted HDD: 1TB and store Pictures & Music on HDD and link the folders. But that would leave my personal files unencrypted. Also what's about SWAP? What would you suggest for partitioning?

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  • How Did we get from CLI to Graphics?

    - by Nathaniel Bennett
    I'm confused when looking into graphics - specifically with operating systems. I mean, how can a computer render a CLI/console along with a GUI. GUI's are completely different from Text. and How Can we have GUI windows that Display Text interfaces, ie how can we have CLI in modern Graphics Operating system - that's what I'm mainly trying to grip on to. How Do Graphic's get rendered to display? is there some sort of memory address that a GPU access which holds all pixel data, and there system's within OS's that Gather the pixel position of Windows and Widgets, along with the Z Index and rasterize them to that memory address, which then the GPU loads to the screen? How About the CLI's integrated with Graphics? how does the OS Tell the GPU that a certain part of the screen wants to display text while the rest, whats to display pixel data? it's all very confusing. Shed some light in it, will ya?

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  • Good PPA for ffmpeg

    - by teeks99
    Its annoying that the default ffmpeg in ubuntu's repositories is outdated and hobbled for legal reasons, however, there's a great page on the forums that walks you through building it from scratch: http://ubuntuforums.org/showthread.php?t=786095 (I also add in support for --enable-libdc1394 --enable-libgsm --enable-libopenjpeg --enable-libschroedinger --enable-libspeex when I build, which is nice, but not essential.) Anyway, I'm getting set to setup a computer lab running ubuntu for a multimedia class I'm teaching, and I was wondering if there was PPA out there that did something similar to what is available when building from scratch. The things I absolutely need from it are up-to-date libxvid, libx264, libfaac, and libmp3lame support plus the un-encumbered stuff (vorbis, theora, vpx). Is there a PPA out there that provides something like this?

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  • What types of programming require practical category theory?

    - by Alexander Gruber
    Category theory has applications in theoretical computer science and obviously is central to abstract mathematics. I have heard that it also has direct practical applications in programming and software development. What type of programming is practical category theory necessary for? What do programmers use category theory to accomplish? Please note my use of "necessary" and "require" in this post. I realize that in some sense most programmers will benefit from having experience in different types of theories, but I am looking for direct applications where the usage of category theory is essential, i.e. if you didn't know category theory, you probably couldn't do it. Also, I'd like to clarify that by "what type of programming," I am hoping less for a broad answer like "functional programming," and more for specific applications like "writing bank software" or "making operating systems."

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  • How to describe the profession [closed]

    - by Michael Kjörling
    Possible Duplicates: How to explain programming to a non-programmer? Getting non-programmers to understand the development process I was asked a question today that made me think. Here's a middle age person who apparently knows nothing about computers besides this specific application they use (I actually suggested to use Calculator, rather than hunt around the whole office for a hand-held one which had mysteriously vanished, and the fact that the computer could be used for such tasks was apparently news), asking me to explain what programming is about. In general. I tried, but am not sure I managed very well. But it got me thinking. What would be a good way to describe programming, or more generally speaking systems development, to a person like that? How have you responded being put in a similar situation?

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  • Only recognizes one of multiple partitions on SD card

    - by Jay Ngo
    Hello everybody, I split my sd card into 2 partitions. When i use usb-card-reader to read my sd card, only the one partition shows up on the screen, the other doesn't. I have run the command "sudo fdisk -l" and the result is the same, only one partition is recognized. But i do believe both partitions of my sd card work fine, because i still can boot my single-board computer with that sd card and run some programms, which are inside that unreadable partition. How can i access both partitions of my sd card? Does anyone know how to solve this kind of problem? I really appreciate your help.

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  • Unmounted disk still spins up regularly

    - by Erik Johansson
    I just added a disk, with partitions but none of them are mounted. The disk will still spin up every now and then. it goes like this: ### disk spins up hdparm -Y /dev/sdb;date /dev/sdb: issuing sleep command 9 feb 2011 23.37.08 CET ### disk spins up hdparm -Y /dev/sdb;date /dev/sdb: issuing sleep command 9 feb 2011 23.46.12 CET Also it always spins up when I shut down the computer. Any tips are welcome, e.g. how can I figure out which process is accessing the disk, are there any daemons doing this? I know it isn't a cron job.

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  • No keyboard input until after GRUB

    - by Dave M G
    I have a computer that I dual boot between Ubuntu 11.10 and Windows 7. I installed Windows first, and Ubuntu second. When I boot, the GRUB menu comes up, showing me the option to select to boot to Ubuntu at the top of the list, and to boot to Windows at the bottom. Unfortunately, as far as I can tell, any key I press on the keyboard (connected by USB) does not get any response, so I can't actually select to boot to anything but Ubuntu (which is the default selection). Once Ubuntu loads and I am at the log in screen, then the keyboard (and mouse) work perfectly normally thereafter. Why would my keyboard not work only during GRUB? And how do I fix it?

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  • Languages/Methods to Learn for Scientific Computing?:

    - by Zéychin
    I'm a second-semester Junior working towards a Computer Science degree with a Scientific Computing concentration and a Mathematics degree with a concentration on Applied Discrete Mathematics. So, number crunching and such rather than a bunch of regular expressions, interface design, and networking. I've found that I'm not learning new relevant languages from my coursework and am interested in what the community would recommend me to learn. I know as far as programming methods go, I need to learn more about parallelizing programs, but if there's anything else you can recommend, I would appreciate it. Here's a list of the languages with which I am very experienced (web technologies omitted as they barely apply here). Any recommendations for additional languages I should learn would be very much appreciated!: Java C C++ Fortran77/90/95 Haskell Python MATLAB

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  • How did Ubuntu know my WPA Key?

    - by nebukadnezzar
    I've recently moved my /home to another computer (keeping all configuration files), with a fresh installation of Ubuntu 10.10. After Installation I've installed wicd and ndiswrapper, to get my Internet Connection up and running. However, after changing /etc/network/interfaces from auto lo iface lo inet loopback To auto wlan0 iface wlan0 inet dhcp and running sudo /etc/init.d/networking restart to get wlan0 set up, wicd just suddenly connected... to my modem. Without supplying any information about the modem whatsoever. Of course wicd creates a local directory at ~/.wicd/, but that directory is empty, and the temporary global configuration at /var/lib/wicd/configurations/ didn't exist due to fresh installation of ubuntu. So what's the deal? Where did wicd get the ESSID and the WPA Key? There hasn't been any activity in this question, but it's still open (and even worth some rep)!

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  • Problem with installing programs

    - by Brian Buck
    I am unable to install programs for the Ubuntu 10.10 system. These download ok, but when attempting to install them, the following message is displayed: AN ERROR OCCURRED WHILE OPENING THE ARCHIVE END-OF-CENTRAL-DIRECTORY SIGNATURE NOT FOUND etc....... ZIPINFO: CANNOT FIND ZIPFILE DIRECTORY IN etc...... As I am new to Ubuntu and also fairly "green" as far as computer terminology is concerned, I have no idea what this means and don't have a clue on how to fix it. Can you help please? Many thanks, Brian Buck

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  • Balancing game difficulty against player progression

    - by Raven Dreamer
    It seems that the current climate of games seems to cater to an obvious progression of player power, whether that means getting a bigger, more explosive gun in Halo, leveling up in an RPG, or unlocking new options in Command and Conquer 4. Yet this concept is not exclusive to video or computer games -- even in Dungeons and Dragons players can strive to acquire a +2 sword to replace the +1 weapon they've been using. Yet as a systems designer, the concept of player progression is giving me headache after headache. Should I balance around the players exact capabilities and give up on a simple linear progression? (I think ESIV:Oblivion is a good example of this) Is it better to throw the players into an "arms race" with their opponents, where if the players don't progress in an orderly manner, it is only a matter of time until gameplay is unbearably difficult? (4th Edition DnD strikes me as a good example of this) Perhaps it would make most sense to untether the core gameplay mechanics from progression at all -- give them flashier, more interesting (but not more powerful!) ways to grow?

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  • Lenovo B570 doesn't boot after installation

    - by Alan
    I install my Ubuntu 11.10 64 Bits in my Notebook Lenovo B570. (I remove Win 7). I have no problems to install. But at finish, when it start, it wont boot. It search for another boot device (Network, CD/DVD). Maybe it issue is about SCSI Hard Drive. I try in BIOS set compatible mode SCSI/ATA. It try locate another boot (Networks, CD/DVD). I try to enable compatible mode in BIOS SCSI - SATA and reinstall again. "Will ubuntu be the only os on your computer or is there a 2nd os?" A:Yes. I remove Windows 7 and use All disc to Ubuntu.

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  • Creating practically solvable 15 puzzle inputs

    - by Ashwin
    I am now developing a 15 puzzle game. I know the method to detect unsolvable puzzles. But unlike 8-puzzle, solution for 15-puzzle takes quite long time for some input states and can be solved within 5 seconds some other set of input states. Now the problem is that I cannot give the user(the player), a problem for which the solution takes more than 10 seconds(if he/she chooses to see the solution). So what I want is that when I initially shuffle the puzzle, I want to only present those puzzles which can be solved within 10 seconds. There must be some way to determine the hardness of the puzzle. I tried searching the net but could not find it. Does anyone know a way of determining the hardness of a puzzle? NOTE : I am using A* algorithm to find out the solution on a computer with 3GB RAM and 2.27GHZ processor.

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