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  • I'm looking for websites with programming problems that I can practice [on hold]

    - by Spentak
    I want to become a more skilled programmer. I also want to do it through Objective-C and iOS. What websites or programs that you know of have problems that I can solve (with the answers)? I have failed some programming tests for jobs (such as "Given 2 values in a Binary Tree - how do you find the lowest common ancestor?) and I want to become a better engineer. I have developed 54 iOS/Android apps to date, but my core CS Skills apparently are rusty/bad. I have looked at TopCoder - but there aren't very many competitions going on, the website is terrible, and there does not appear to be anything that really supports Objective-C/iOS Websites?

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  • Installed 12.04 from CD problems with compiz-core - wont continue - just

    - by user70886
    Installed 12.04 from CD to clean hard drive but on first boot up says problems with compiz-core. Clicked continue with it not installed. After I sent info for help; it came back with some packages are not up to date. Said I need to update compiz-core and libylib2.0-0 Cancelled the process to send info (after second time) but it wont cancel and it wont load the desktop. What do I do now? Right click will let me create a new folder/document or organise desktop by name etc but I cannot see the usual system bar or left menu items. Is there a way to load the terminal and reload the desktop. If this was windows I'd use cntrl alt delete and run explorer to fix the desktop.

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  • desktop problems in 12.04

    - by joe
    I recently upgraded from 11.10 (i think that was the last version that was out) to 12.04 and ever since i have been unable to start my computer (hp pavillion dv2815nr) in the "normal" mode, but have had to start it using previous versions. Every time I go to start it, it has a plain red screen (which it does in the previous versions as well) and the desktop icons will not respond. Also, the task bar at top is essentially missing, only having a thin black line there, and also missing the icon bar that "pops out" when you scroll along the left side of the screen. Essentially, I'm locked out in normal mode. Nothing will respond.

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  • compiz problems - no effects work, despite the fact that they seem to be properly configured

    - by user97551
    I've looked through some posts about compiz and either haven't found the answer, or haven't understood what's been said. Could someone help me out? I installed ubuntu 12.04 through windows 7 (so I can dual boot) and installed compiz and set up the settings I want (hotcorners etc). For a while it seemed like it was going fine, but then I restarted the laptop, none of the compiz settings were working and the auto-launcher wasn't even coming up when I passed cursor over it. The computer is still usable, when I 'dash home' the auto-launcher appears, and I can tab through windows but yeh... the auto-launcher and hotcorners I set up through compiz aren't working at all. Any ideas? Oh, whilst I'm super grateful for any help I can get, I'd really appreciate it if you could keep any instructions as basic as possible. I'm a bit new at this... THANK YOU!

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  • Cannot start service SPUserCodeV4 on computer

    - by ybbest
    When you create a sand boxed solution for SharePoint 2010 in Visual Studio 2010 and try to deploy the solution , you could get the error “Error occurred in deployment step ‘Retract Solution’: Cannot start service SPUserCodeV4 on computer”(See the Picture1 below). In order to fix this , you need to go to Central Administration -> System Settings -> Manage services on server and start service “Microsoft SharePoint Foundation User Code Service” If you are developing SharePoint on DC(Domain controller),you need to check the solution from my previous post. Error message.(Picture1) Locate Microsoft SharePoint Foundation User Code Service.(Picture 2)

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  • Distorted graphics, problems with starting up

    - by GreenEggsAndHam64
    Using the newest version of Ubuntu, freshly installed. NVIDIA GeForce GTX 560 Ti. It's mostly the font that doesn't render well, I think. Small logos do it too, sometimes. Screenshot to clarify (see bookmarks, search bar, etc.). EDIT: Another screenshot. And, sometimes when I start up, I get only a black screen saying [OK]. I can move my mouse around, but nothing helps, except for restarting. Also, my desktop picture doesn't stay the same. Every time I start up Ubuntu it goes back to the standard purple background. They're not very serious problems, but it's all a little annoying. Thanks in advance for your help.

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  • Two problems, both with either lock or suspend.

    - by user199208
    I recently did two things that may be the cause of either of them. 1) I started using a second screen 2) I installed xscreensaver instead of the stock, power saving option. My first question is about suspend: every time I wake from suspend, networking is disabled. While I've seen multiple posts about that on here, it didn't start happening until recently. Second, lock seems to be disabled now. Are both of these problems a bug, or was this caused by the second screen or maybe xscreensaver?

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  • Getting Started with 12.04 LTS Problems

    - by mark
    Okay previously I used ubuntu 10.04 in Desktops and Loved it! I bought a newer Toshiba Satellite with an i7 CPU, 8GB Ram, 1TB HD, first thing I tried to do was install Ubuntu 9 on it then I found out it was no longer Supported. (I gave my 10.04 disk away) So I tried installing Windows 7 and experienced SO MANY problems, I am going back to try 12.04. Starting all over again. After installing 12.04 Wireless was Detected yet said it was Disabled by a Hardware Switch. Went read through the Message Boards found Solution which was Sudo rf Kill All. Okay all excited I would finally get my Ubuntu to finally work I rushed back to my laptop from the internet cafe, and went looking for the TERMINAL input on my Ubuntu 12.04, and I cannot find the Terminal. If I can't find the TERMINAL how Can I enter any Sudo Stuff? So I guess the first question is Where is the Terminal Located in 12.04? Thank you.

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  • Facing unity problems after upgrading to Ubuntu 12.04

    - by sh2515
    I upgraded to 12.04 and had problems with unity. So this is what I did 1) Ctrl + Alt + F1 sudo apt-get install compizconfig-settings-manager Export DISPLAY=:0 ccsm 2) Ctrl + Alt + F7 3) Enabled unityplugin 4) Ctrl + Alt + F1 unity --replace it worked with a couple of error messages now I have to put in start up application export DISPLAY=:0 unity --replace NVIDIA software recognises my monitor but ubuntu sees it as laptop. something isn't right can someone point out what info I need to put here for people to help. I have been upgrading this from 8 ish so have altered lots especially when compiz fusion first came out. Also if I run recovery session and type 'unity --replace' it starts and runs fine.

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  • PCManFM problems: shuts down unexpectedly, would not always start [closed]

    - by cipricus
    In Lubuntu 12.04 beta (final release in a few days). I do not remember doing something outrageous to my PCManFM but now it has has a lot of problems: "extract here" menu action wouldn't work (this problem never disappears) the program shuts without obvious reason making the desktop empty (the program can be started in run (alt-f2) but this does not alway restore the desktop) would not start sometimes from its /usr/share/applications.desktop file (or the "Aplication Launch Bar") although it starts in run (alt-f2) (the last problem is temporarily solved if the program is closed in task manager and than restarted with alt-f2) I have reinstalled it to no avail. Any ideas?

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  • Please help with samba, can't access files from other computer

    - by user254074
    Maybe I am missing something but all I want to do is be able to access and transfer files from one folder on my main computer to my htpc. Both computers are running Ubuntu 14.04. I followed the instructions on this video but I am not sure if I need to do something on the HTPC to access my Movie folder. I went into nautilus then Browse Network Windows Network Workgroup but I get an error and it won't let me access it. Is there something I am doing wrong?

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  • Ubuntu 12.04 - Read only file system+computer crash/freezes after an update that got interupted

    - by user288542
    I've run into an error with Ubuntu while I was updating it. During the update my power went out and interrupted the update. When I finally got power and booted my computer, I received an error, telling me to remount ./ and basically told me I could press S to skip or F to fix. (I forgot exactly what it said) but anyways, I originally pressed F to fix, but that didn't solve the problem, so then I went into the terminal and I tried to remount that way, but I couldn't execute because it's stuck in "file system read only." Sorry, my description of the problem is dull. I'm debating on just reinstalling, but I have a ton of files I would like to keep, about 3+ years worth of websites I've built. Is there a proper way to fix this?

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  • Problems while installing Ubuntu 12.04 64 & 32 bits from LiveCd

    - by user76104
    I am trying to install Ubuntu on my new pc but I am encountering problems. When I boot from the installation CD, everything runs fine until the "window" when the user has to decide to Try Ubuntu or Install it in the machine. Well that "window" appears in blank, and my mouse and keyboard behaves really slow. I can't do anything , so i have to shut it down by pressing power button. The specification of my pc are this Motherboard: Gigabyte ex58 ud7 CPU: i7 950 HD: Western digital caviar black Int. memory: 6gb memory corsair Graphics: evga gtx580 I really need to install Ubuntu or another Linux distribution, i am using de seismic Unix program {Edit : Guess it is this} on my laptop. I hope someone can help me.

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  • Logitech C310 webcam problems

    - by haggai_e
    I've just installed a Logitech C310 webcam on my Ubuntu Oneiric machine, and I've got several problems. When I use cheese, if I set it to use the higher resolutions, the picture contain shadows and has distorted colors. Only with lower resolutions the picture looks okay. The above photos were taken with cheese. In addition, the camera's internal microphone didn't always work. When using it through pulseaudio, the sounds were fast and with high pitch. When using it directly through alsa it sounded fine. Any ideas?

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  • My ethernet connection is not working but it is detected by my computer

    - by smithy545
    I'm setting up an old computer with ubuntu server 12.04. I wiped the drive and went through the installation fine but afterwards the ethernet would not work. It's physically connected to the router and the card is recognized by lspci(SiS 900) but it won't connect at all. I've plugged in and installed the drivers for a wifi adapter and it's worked with the same router. Just so you know I've turned it on and off plenty of times. Any help would be appreciated.

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  • Limiting what resumes computer from suspend

    - by user1399195
    I'm having a ton of trouble getting Suspend to work with my laptop. I want to start using Ubuntu but this is a pretty important aspect since I take my laptop with me everywhere. Anyways, I wanted to narrow down the possible problem with my laptop. What happens is that when I suspend my computer, within seconds, it just boots back up. I have changed /proc/acpi/wakeup to where everything is disabled but that did nothing. Is there a way where I can disable every feature from waking up the laptop except the power button?

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  • Computer freezes up

    - by Namaachi
    I am using the latest Ubuntu OS and up-to-date Chrome browser. Occasionally when I am working at a 5 hour stretch, the computer will freeze up completely and I will have to close down manually and reboot. When this happens I lose the material I have been working on as I cannot save it. And I often receive a notice at this time saying that my profile is not available or that I do not have a profile. I am an Ubuntu user not a technician and do not know what to do about this problem.

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  • Problems with input and suspend(separately)

    - by VaultPrisoner
    I'm still very new at Ubuntu/any other linux OS, so this might be an easy fix for most. I installed Ubuntu 14.04 a few days ago, it's dual-booted with Windows 8.1 and I'm using a Toshiba laptop. Whenever I suspend/close my computer, and then open it again, the front LEDs will light up telling me that it's running, but the screen will not do anything. I can hear the fan spinning, but it's almost like the screen doesn't power on like it should. Also, another problem I'm having, is that ~60% of the time, my trackpad and keyboard do not work at all, this starts as soon as Ubuntu boots up. To fix it, I just turn it off and back on until it works. My USB mouse does work no matter what though. Both problems are only present in Ubuntu and not windows 8.1.

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  • Screen rendering problems after upgrading to 12.10

    - by vjrj
    Since upgrading to Ubuntu 12.10 I'm suffering severe rendering issues in unity: Some parts of any application (for instance Firefox, or emacs, etc) are blank, or are not rendered, or are blinking. Some fonts in an application are not correct rendered, maybe only some part (see Eclipse screenshot). There is some shadows in desktop background. It's something that occurs from time to time (it's works great for hours and suddenly start to give this rendering problems). I was trying to find a bug in launchpad but without success. My card (using i915 module): 00:02.0 VGA compatible controller [0300]: Intel Corporation Core Processor Integrated Graphics Controller [8086:0042] (rev 02) I've tried to reset compiz/unity or gnome but does not help. Any tip? Update: A Firefox screenshot of how my profile in Ask Ubuntu looks like now

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  • CD help and Dead Computer[SOLVED]

    - by fifi_defluffy
    I am trying to burn 12.04 on a CD. Should be it working or is it not? After reading a couple of other forums that relates to this question, they say to use a 700MB CD which I am but again is not working. Another question is that the reason for this is because I have a School Desktop which I use and the OS seems to have crashed and that OS files seem to be missing so this looks like an option at the moment. So basically, Can't burn it on a CD (says its too small) and trying to rework a partial dead computer...

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  • If you could take one computer science course now, what would it be?

    - by HenryR
    If you had the opportunity to take one computer science course now, and as a result significantly increase your knowledge in a subject area, what would it be? Undergraduate or graduate level. Compilers? Distributed algorithms? Concurrency theory? Advanced operating systems? Let me know why. (Note that I appreciate this isn't a far fetched scenario - but time and inertia might be preventing people from taking the course or reading the book or whatever)

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