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  • Boot path not found, cannot start OS

    - by Dustin
    My desktop is 12.04 64bit, and it cannot boot from the hard drive anymore. When I attempt to it just is stuck on a blank screen with an blinking dash, and nothing happens. I checked with the bios trouble shoot for problems and it said that no boot path could be found. I do not know why this is happening, but need to fix it because it used to boot up normally. What I need to know is how to fix it. I can boot into a live DVD. Also, there were a few boots I would attempt to boot into a live USB, then it would boot to the hard drive, but that does not work any more. So with the live DVD (it is an 10.04 LTS 32bit), is there any means to correct the boot path from the live DVD? Thank you for your time and answers.

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  • Regarding inbuilt application PostGreSQL

    - by Mohamed Fazil
    In my work I need to study about FOSSology. This tool supports only in Linux. So i have installed Ubuntu version 12.10 Quantal. Through net i have come to know Ubuntu has inbuilt postgreSQL application. But when i installed i don't know how to see whether it is already installed. Could you please help me in solving this issue. It's high priority and i have short time to finish my work. I have downloaded manually and while install after executing this command sudo dpkg -i File.dep i am getting error message saying that This need root user privileges. PLease help me.

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  • How can I downgrade my version of Evolution to the one used in Ubuntu 11.04?

    - by Johnny
    I just upgraded, and like a few other users I had issues with Evolution email after the upgrade from 11.04 to 11.10 and then 12.04. I know to make backups, but in this case I stupidly didn't think that the program would be changed (Firefox wasn't modified at all), and so I failed to make a backup. Three days later I am still having issues, and recovering the emails is proving to be difficult with only partial recovery or it not working at all. My question is, can I add in some source to use the 11.04 version of Evolution, since that version was working fine and would know what to do with the current files (Inbox, Outbox, etc.) I also noticed that Evolution's restore feature said it changed the way emails are handled, so it seems like a downgrade could put everything back to normal. Worst case scenario, I start over, but I wanted to try everything first. Thanks in advance! I'm also open to any suggestions for restoring the old emails files to the current version of Evolution.

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  • SQLAuthority News SQL Server Technology Evangelists and Evangelism

    This is the exact conversation that I had with three people during the recent SQL Server Public Training. Person 1: “Are you an SQL Server Evangelist?” Pinal : “No, but Vinod Kumar is.” Person 1: “Who are you? Person 2: “He is Pinal, haha!” Person 1: “I know that, but dont you evangelize SQL Server [...]...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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  • How can calculus and linear algebra be useful to a system programmer?

    - by Victor
    I found a website saying that calculus and linear algebra are necessary for System Programming. System Programming, as far as I know, is about osdev, drivers, utilities and so on. I just can't figure out how calculus and linear algebra can be helpful on that. I know that calculus has several applications in science, but in this particular field of programming I just can't imagine how calculus can be so important. The information was on this site: http://www.wikihow.com/Become-a-Programmer Edit: Some answers here are explaining about algorithm complexity and optimization. When I made this question I was trying to be more specific about the area of System's Programming. Algorithm complexity and optimization can be applied to any area of programming not just System's Programming. That may be why I wasn't able to came up with such thinking at the time of the question.

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  • How does timeseal work? [on hold]

    - by Simon Meyer
    I know the the fics (free internet chess server: www.freechess.org/) does use a program called timeseal to measure the time that a user needed to take a move. This timeseal is some time measurement on the client. Measuring on the client is much better and fairer than measuring the time on the server since you don't lose time just by having a bad connection. But since fics has a lot of interfaces to play on - what prevents rogue interfaces to say that they always only used 0.1 seconds for any move? Does anyone know how this is handled? Just a sidenote: i don't want to build a rogue interface, but i'm trying to build something similar that is measuing client side time but should not be easy to cheat on.

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  • Recovering an Ubuntu installation - Ubuntu eats itself after 'sudo apt-get install -f'

    - by Tony Martin
    Updater (I assume) put a no entry style alert icon on the panel which informed me that certain package dependencies were not up to snuff. Upgrades were thereafter only partial. The dialogue advised that I sudo apt-get install -f. I did this hoping that app-get would fulfil dependencies and replace corrupted files and watched it systematically remove every component of linux, both the stuff I had installed and the core ubuntu packages. I could only assume at this stage that this was in preparation for a fresh install but, of course, I know better now - if you find yourself with apt-get warning you that you are about to remove several hundred packages and asking you to type an involved confirmation string seek advice before proceeding. I digress. This was a 64 bit install of 12.04. All that is left is grub pointing to a couple of windows recovery partitions on the hard drive. Thankfully the Ext4 partition is reachable from a stick boot. EDIT: I've logged onto the machine with a 64 bit stick and can see the file structure left behind by apt-get after {ahem} fixing. My first instinct was to run install from the stick but it seemed to want to do another install rather than a repair. My question then: is there a way to recover the current installation so that if I reinstall the packages I had they will pick up the original settings? I'm particularly worried about losing email from evolution - the rest I could probably lash back together. As for the use of PPA I'm not sure what you're driving at. I generally use Ubuntu Software Centre to install software, though I have used terminal scripts to add new repositories and software successfully following guidance on various websites. The most recent change I made was a downgrade of Wine in an attempt to install and run excel2007 (a necessity, I think, as I have VBA work to do). The installer had stalled and had to be killed. I wonder if that corrupted whatever database holds a model of the package installation structure. I would also be interested to know how this disaster came about. I see people in the know recommending the sudo apt-get install -f as a fairly innocuous cure in similar circumstances. Thanks for your attention, Tony Martin p.s. Do please forgive the rant aspects of the original post. It's hard to write rationally with a large hole in the pit of your stomach.

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  • Getting solutions off the internet. Bad or Good? [closed]

    - by Prometheus87
    I was looking on the internet for common interview questions. I came upon one that was about finding the occurrences of certain characters in an array. The solution written right below it was in my opinion very elegant. But then another thought came to my mind that, this solution is way better than what came to my mind. So even though I know the solution (that most probably someone with a better IQ had provided) my IQ was still the same. So that means that even though i may know the answer, it still wasn't mine. hence if that question was asked and i was hired upon my answer to that question i couldn't reproduce that same elegance in my other ventures within the organization My question is what do you guys think about such "borrowed intelligence"? Is it good? Do you feel that if solutions are found off the internet, it makes you think in that same more elegant way?

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  • Streaming audio from a webpage

    - by luca590
    I want to be able to stream audio from another webpage through mine, but i do not know how to find the url for each audio file located on a separate webpage. It would also be extremely helpful to do everything in bulk so instead of writing a separate line of code for each audio file, simply writing a few lines of code to upload links to 100 audio files, etc. I am also using Ruby on Rails for my webpage. How do you find a file located on a separate webpage? Does anyone know, if possible how, to upload file links in bulk?

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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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  • Join me on MSDN Radio next Monday Mark your calendar.

    Announcement: MSDN Radio: The ASP.NET Developer Evolved with Joe Stagner Event ID: 1032448575 Date: Monday, April 12, 2010 9:00 AM Pacific Time (US & Canada) 30 Minutes Event Overview You may know him as Mr. How Do I with Microsoft ASP.NET. For the last few years Joe has been busy working with the ASP.NET product team to simplify and educate developers on what's possible with the latest web tools. We talk with Joe about how the web developer is able to learn about and leverage new tools...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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  • Microsoft Assessment and Planning (MAP) Toolkit 5.0 Beta

    - by Lara Rubbelke
    Do you know where SQL Server is installed - everywhere it is installed? Do you really know where SQL Server is installed? Are you looking for a tool that will help you discover any rogue instances so you can better manage these instances? The Beta 2 for the Microsoft Assessment and Planning (MAP) Toolkit 5.0 is now open. Join the beta review program and help influence the development of the toolkit. To participate, register for the MAP Toolkit 5.0 Beta 2 at Microsoft Connect. The MAP Toolkit 5.0...(read more)

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  • How do I mount shared folders (win7 host) in Ubuntu (guest) using VMware(tools v6)

    - by V-Light
    Hello, Experts. I've successfully installed VMware tools for Ubuntu. Everything seems to work fine, but shared folders were not mounted automatically. How do I get them to work? If I run vmware-hgfsclient in terminal, I get the list of shared folders, but ls -l /mnt/hgfs is empty. Actually there's no hgfs dir in /mnt. I know I should probably use the vmware-hgfsclient tool, but I realy don't know how. P.S. I wouldn't ask if I could understand the vmware-hgfsclient help I've read. Any suggestions?

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  • Any really decent way to get three monitors?

    - by JohnCC
    What satisfactory solutions are there to achieve three monitors on Ubuntu? I know some ATI cards (Eyefinity) can support 3 monitors from a single card, but I don't know how well this is supported under Linux and besides, I've never had much luck with ATI on Linux. The alternative is to try two cards, but there seem to be problems there too. It looks to me like xrandr cannot support 2 GPUs. I believe you'll end up with two separate "Screens" across which you cannot move applications or windows, unless you enable Xinerama which as I understand it disables some acceleration and probably compositing too. I've found so much conflicting information on this online, I'm really confused. Please advise!

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  • Apple New Year alarm bug cause

    - by StasM
    As many people know, Apple has a bug in their iPhone that prevented alarms from going off at 1st and 2nd of January 2011. What is strange is how that bug might happen - i.e., as far as I know this bug happens in all timezones and nobody is switching off DST on Jan 1st, so it's not timezone or DST-related. Also, Jan 1st seems to be nothing special as a UNIX timestamp, so something like sign change or integer overflow can't be the reason. It is highly improbably that alarm code has something like if(date == JANUARY_1_2011 || date == JANUARY_2_2011) turn_alarms_off(); - that would be a sabotage and not a bug. So the question is - could you imagine and describe a bug that would cause the alarm to fail exactly at Jan 1st and 2nd everywhere while letting it work otherwise, without specifically referring to those exact dates? Of course, if somebody knows the real cause, that would be a definite answer, but if nobody knows it - I think it is interesting to think what might be the cause of such strange bug.

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  • Whats the thing the report bugs in php?

    - by Max Hazard
    Currently I am learning php. Php is understood by browser itself right from php sdk right? SDK include libraries right? So browser is like an interpreter of php codes. I want to know that whenever I type a wrong php syntax what is the thing report me the error? Obviously the browser is reporting the error. But what part of it? I mean I don't get it. Like writing a compiler we do lexical analysis and make the compiler which report any bug in source code. I assume here browser is analogous to compiler. I don't know exactly but compiler contains bug report functions or methods which is debugger. Debugger is part of compiler which report bugs. Does the browser contains such debuggers? Can there be any browser which doesn't understand php?

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  • Split a text file by its entries

    - by Alexx Hardt
    Hi, I'm trying to analyze an enormous text file (1.6GB), whose data lines look like this: 20090118025859 -2.400000 78.100000 1023.200000 0.000000 20090118025900 -2.500000 78.100000 1023.200000 0.000000 20090118025901 -2.400000 78.100000 1023.200000 0.000000 I don't even know how many lines there are. But I'm trying to split the file by date. The left number is a time stamp (these lines are from 2009, January 18th). How can I split this file into pieces according to the date? Everything I know would be to grep file '20090118*' > data20090118.dat , but there sure is a way to do all the dates at once, right? The number of entries per date differ, so using split with a constant number won't work. Thanks in advance, Alex

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  • MSDN Flash - MIX10 Special: What Happens in Vegas.

    This week the MSDN Flash is a wrap up of everything MIX. We all know the old adage "What Happens in Vegas, Stays in Vegas"; yet with live broadcasts, blogs and tweets that is no longer the case. I have just returned from MIX10 with a group of ten kiwis and I'll say that this year's event had some Te Awesome moments. We unveiled the developer story for Windows Phone 7 Series and announced that New Zealand will be among 30 countries where developers get paid at launch. I blogged about the Windows...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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  • Rails - How to use modal form to add object in one model, then reflect that change on main page?

    - by Jim
    I'm working on a Rails app and I've come across a situation where I'm unsure of the cleanest way to proceed. I posted a question on SO with code samples and such - it has received no answers, and the more I think about the problem, the more I think I might be approaching this the wrong way. (See the SO question at http://stackoverflow.com/questions/9521319/how-to-reference-form-when-rendering-partial-from-js-erb-file) So, in more of a generic architecture type question: Right now I have a form where a user can add a new recipe. The form also allows the user to select ingredients (it uses a collection_select which contains Ingredient.all). The catch is - I'd like the user to be able to add a new ingredient on the fly, without leaving the recipe form. Using a hidden div and some jQuery/AJAX, I have a link the user can click to popup a modal form containing ingredients/new.html.erb which is a simple form. When that form is submitted, I call ingredients/create.js.erb to validate the ingredient was saved and hide the modal div. Now I am back to my recipe form, but my collection_select hasn't updated. It seems I have a few choices here: try and re-render the collection_select portion of the form so it grabs a new list of ingredients. This was the method I was attempting when I wrote the SO question. The problem I run into is the partial I use for the collection_select needs the parent form passed in, and when I try and render from the JS file I don't know how to pass it the form object. Reload the recipe form. This works (the collection_select now contains the new ingredient), but the user loses any progress they made on the recipe form. I would need a way to persist the form data - I thought about manually passing the values back and forth, but that is sloppy and there has to be a better way... Try and manually insert the tags using jQuery - this would be simple, but because I'm allowing for multiple ingredients to be added, I can't be certain what ID to target. Now, I can't be the only person to have this issue - so is there an easier way I'm missing? I like option 2 above, but I don't know if there's an easy way to grab the entire params hash as if I had submitted the main recipes form. Hopefully someone can point me in the right direction so I can find an answer to this... If this doesn't make any sense at all, let me know - I can post code samples if you want, but most of the pertinent code is up on the SO question. Thanks!

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  • Use your own domain email and tired of SPAM? SPAMfighter FTW

    - by Dave Campbell
    I wouldn't post this if I hadn't tried it... and I paid for it myself, so don't anybody be thinking I'm reviewing something someone sent me! Long ago and far away I got very tired of local ISPs and 2nd phone lines and took the plunge and got hooked up to cable... yeah I know the 2nd phone line concept may be hard for everyone to understand, but that's how it was in 'the old days'. To avoid having to change email addresses all the time, I decided to buy a domain name, get minimal hosting, and use that for all email into the house. That way if I changed providers, all the email addresses wouldn't have to change. Of course, about a dozen domains later, I have LOTS of pop email addresses and even an exchange address to my client's server... times have changed. What also has changed is the fact that we get SPAM... 'back in the day' when I was a beta tester for the first ISP in Phoenix, someone tried sending an ad to all of us, and what he got in return for his trouble was a bunch of core dumps that locked up his email... if you don't know what a core dump is, ask your grandfather. But in today's world, we're all much more civilized than that, and as with many things, the criminals seem to have much more rights than we do, so we get inundated with email offering all sorts of wild schemes that you'd have to be brain-dead to accept, but yet... if people weren't accepting them, they'd stop sending them. I keep hoping that survival of the smartest would weed out the mental midgets that respond and then the jumk email stop, but that hasn't happened yet anymore than finding high-quality hearing aids at the checkout line of Safeway because of all the dimwits playing music too loud inside their car... but that's another whole topic and I digress. So what's the solution for all the spam? And I mean *all*... on that old personal email address, I am now getting over 150 spam messages a day! Yes I know that's why God invented the delete key, but I took it on as a challenge, and it's a matter of principle... why should I switch email addresses, or convert from [email protected] to something else, or have all my email filtered through some service just because some A-Hole somewhere has a site up trying to phish Ma & Pa Kettle (ask your grandfather about that too) out of their retirement money? Well... I got an email from my cousin the other day while I was writing yet another email rule, and there was a banner on the bottom of his email that said he was protected by SPAMfighter. SPAMfighter huh.... so I took a look at their site, and found yet one more of the supposed tools to help us. But... I read that they're a Microsoft Gold Partner... and that doesn't come lightly... so I took a gamble and here's what I found: I installed it, and had to do a couple things: 1) SPAMfighter stuffed the SPAMfighter folder into my client's exchange address... I deleted it, made a new SPAMfighter folder where I wanted it to go, then in the SPAMfighter Clients settings for Outlook, I told it to put all spam there. 2) It didn't seem to be doing anything. There's a ribbon button that you can select "Block", and I did that, wondering if I was 'training' it, but it wasn't picking up duplicates 3) I sent email to support, and wrote a post on the forum (not to self: reply to that post). By the time the folks from the home office responded, it was the next day, and first up, SPAMfighter knocked down everything that came through when Outlook opend... two thumbs up! I disabled my 'garbage collection' rule from Outlook, and told Outlook not to use the junk folder thinking it was interfering. 4) Day 2 seemed to go about like Day 1... but I hung in there. 5) Day 3 is now a whole new day... I had left Outlook open and hadn't looked at the PC since sometime late yesterday afternoon, and when I looked this morning, *every bit* of spam was in the SPAMfighter folder!! I'm a new paying customer After watching SPAMfighter work this morning, I've purchased a 1-year license, and I now can sit and watch as emails come in and disappear from my inbox into the SPAMfighter folder. No more continual tweaking of the rules. I've got SPAMfighter set to 'Very Hard' filtering... personally I'd rather pull the few real emails out of the SPAMfighter folder than pull spam out of the real folders. Yes this is simply another way of using the delete key, but you know what? ... it feels good :) Here's a screenshot of the stats after just about 48 hours of being onboard: Note that all the ones blocked by me were during Day 1 and 2... I've blocked none today, and everything is blocked. Stay in the 'Light!

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  • The How-To Geek Guide to Audio Editing: Cutting, Trimming & Arranging

    - by YatriTrivedi
    Audacity novices often start with lofty project ideas, but sometimes they lack the basics. Knowing how to cut and trim tracks is basic audio editing and is a fundamental starting point for making more elaborate arrangements. For this exercise, I’ll be making a ringtone from a Castlevania: Symphony of the Night track. I have the original CD and used that so I started with better quality audio than an MP3. You can follow along with any file you like, just so you get a feel for cutting, trimming, and arranging sound clips for yourself. I know which parts I want to edit in the track, but a quick play-through will help me look for those areas visually. How to Enable Google Chrome’s Secret Gold IconHTG Explains: What’s the Difference Between the Windows 7 HomeGroups and XP-style Networking?Internet Explorer 9 Released: Here’s What You Need To Know

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  • What kind of an IT or programming job can a college student get part time?

    - by Alex Foster
    I'm a college student with a full load of classes and i need some extra money to cover some of my expenses. I love anything and everything to do with computers. I don't know how to program but have build computers before and know how windows works. I would call myself a power user. My question is, what kind of a job can someone like me get with effort? If there are some more skills that i can pick up that would benefit in getting the foot in the door i would love to hear about them. The only limitation i have is that i can't work very late in the evening most days due to classes. But usually in the morning my time is available for work. I will appreciate all answers i receive. Thank you for your help.

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  • Collision Resolution

    - by CiscoIPPhone
    I know quite well how to check for collisions, but I don't know how to handle the collision in a good way. Simplified, if two objects collide I use some calculations to change the velocity direction. If I don't move the two objects they will still overlap and if the velocity is not big enough they will still collide after next update. This can cause objects to get stuck in each other. But what if I try to move the two objects so they do not overlap. This sounds like a good idea but I have realised that if there is more than two objects this becomes very complicated. What if I move the two objects and one of them collides with other objects so I have to move them too and they may collide with walls etc. I have a top down 2D game in mind but I don't think that has much to do with it. How are collisions usually handled? This question is asked on behalf of Wooh

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