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• Problems about responsiveness and keyboard/mousepad not working

  - by ChrisTheNoob

  So I installed Ubuntu 12.04, I'm very new at this and want to get into the world of Linux but have run into nothing but problems. I have an Acer Aspire 5553g. First off, my keyboard won't work. Second, my computer has more than enough of everything to run Ubuntu smoothly, but everything runs extremely slow. (You move the mouse and it gets there a few seconds later) It's to the point where I can't even use it and I really want to. I'm tired of Microsoft stuff and I've been looking at learning how to use Linux based operating systems for a while. Please send me some help to fix these issues and maybe some tips to help get me started. Thanks in advance chris

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• unzip error "End-of-central-directory signature not found"

  - by Tim

  I try to unzip a zip file, but got an error: $ unzip COCR2_100.zip Archive: COCR2_100.zip End-of-central-directory signature not found. Either this file is not a zipfile, or it constitutes one disk of a multi-part archive. In the latter case the central directory and zipfile comment will be found on the last disk(s) of this archive. note: COCR2_100.zip may be a plain executable, not an archive unzip: cannot find zipfile directory in one of COCR2_100.zip or COCR2_100.zip.zip, and cannot find COCR2_100.zip.ZIP, period. I googled but didn't find a solution. I was wondering why it is and how I should fix it? Thanks! The zip file can be downloaded from COCR2_100. It is an application, and here is its website http://users.belgacom.net/chardic/cocr2.html. My OS is 10.10.

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• How to name a method that both performs a task and returns a boolean as a status?

  - by Limbo Exile

  If there is a method bool DoStuff() { try { // doing stuff... return true; } catch (Exception ex) { return false; } } should it rather be called IsStuffDone()? Both names could be misinterpreted by the user: If the name is DoStuff() why does it return a boolean? If the name is IsStuffDone() it is not clear whether the method performs a task or only checks its result. Is there a convention for this case? Or an alternative approach, as this one is considered flawed? For example in languages that have output parameters, like C#, a boolean status variable could be passed to the method as one and the method's return type would be void.

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• Lag compensation of projectile shooting game

  - by Denis Ermolin

  I'm thinking about an algorithm for firing projectiles with lag compensation. Now I did find only one descent solution: Player hits fire button. Client sends input "fire". Client waits for server response. Server generates bullet then sends response to client. Client recieves response and finally fires projectile. Is this solution only "trueway"? I find it the only one that can be fair to all of the clients. Valve in this case, doesn't compensate lag from rocket shots. I am feeling that I will not compensate it, too. I think that with today's bandwidth I can close my eyes on this problem, because I don't see any solutions with fair logic. What do you think?

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• Java plugin is not working on some sites

  - by Jay

  I have icedtea6-plugin installed on my Ubuntu box. The weird thing is, when I am browsing the internet, certain website are able to use the Java and some websites are not. For instance, I am able to log in to my bank at nordea.dk. They use a Java applet to authenticate the user. But when I try to use keepvid.com, it says "Loading Java Applet". And then after a minute or two it says "Error: Please click here to download Java. If you already have Java, please restart your browser and try again." The thing is I've restarted my computer, closed and opened my browser(chromium) and none of it seems to help. Could someone please point me in the right direction to solve this problem? Thanks.

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• What is a good way to keep track of strings for dictionary lookups?

  - by Justin

  I am working through the Windows 8 app tutorial. They have some code about saving app data like so: private void NameInput_TextChanged(object sender, TextChangedEventArgs e) { Windows.Storage.ApplicationDataContainer roamingSettings = Windows.Storage.ApplicationData.Current.RoamingSettings; roamingSettings.Values["userName"] = nameInput.Text; } I have worked with C# in the past and found that things like using constant string values (like "userName" in this case) for keys could get messy because auto-complete did not work and it was easy to forget if I had made an entry for a setting before and what it was called. So if I don't touch code for awhile I end up accidentally creating multiple entries for the same value that are named slightly differently. Surely there is a better way to keep track of the strings that key to those values. What is a good solution to this problem?

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• Boot Failure: No default or UI configuration directive found Normal install on laptop [closed]

  - by user79920

  I have had Ubuntu on my laptop for quite a while, it's just a standard install, no partitioning off, no wierdness of any other sort, just ubuntu. Today my computer started to lag really bad so I tried to restart it, but after bios loaded I just got an error that said "ERROR: No configuration file found No DEFAULT or UI configuration directive found!" After that it had "boot:" and a cursor, like it expects me to type something. Once again, this is just a normal install on my hard drive, not a VM or booting from USB. It's Ubuntu 12.04 on a Sony Vaio VGN-SZ240P Any help is appreciated!

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• Problem with sound in Kubuntu 12.10

  - by Mihkel

  I'm really enjoying Kubuntu 12.10 experience, but the problem starts with sound. It wasn't here before, but today sound sounds garbled and echoed and wrong. It happens in Audacity and VLC. It doesn't happen when I test the sound devices nor when I use Amarok to play the music files (but come on, who uses Amarok to listen to a random music file, it's much more natural to use VLC for that ;-) ) Kubuntu/Phonon recognizes 2 sound devices: 1) RV770 HDMI Audio [Radeon HD 4850/4870] Digital Stereo [HDMI] 2) Built-in Audio Analog Stereo I know it has to use the second option, and it probably does, but that's not the case. What I did find out was that I had to rescan for audio devices in Audacity (and probably select "sysdefault") for it to sound normal. Why does it happen? I've tried following some other questions, but well.

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• converting 2d grid of squares to polygon nav mesh

  - by Roflha

  I haven't actually started programming for this one yet, but I wanted to see how I would go about doing this anyway. Say I have a 2D matrix of squares, all of the same size, some traversable and some not. How would I go about creating a navigation mesh of polygons from this grid. Is there any reading I can look at until I get a chance to get to my computer or should I just give it a go. My idea was to take the non-traversable squares out and extend lines from there edges to make polygons.. that's all I have got so far. Any advice?

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• Does your company name in an article title damage Search Engine relevance

  - by user492681

  I've been wondering about this for a while but never come across a solid answer. Many websites include their name in all the title tags of their articles. This is often apparent in word-press blogs etc. eg: Tsunami hits Japan and leaves thousands homeless | My Website Name The issue I have is that Search engines strip the stop words out of this sentence to leave the words in which it compares to the body text. So if I want my article to rank well and be relevant, in this case about the terrible Tsunami that has recently struck Japan what is to STOP the MY WEBSITE NAME section of the title de-valuing the relevance of the article. Am I over-worrying? Or should I take this in to consideration? Thanks for advice in advance.

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• Moving Ubuntu to a new hdd

  - by jaurisan

  I have a 300gb hdd which I am currently using on my older PC. Now I want to have a copy of those 300GB into a new 1TB hdd (installed in a new computer). My "problem" is that the 1TB hdd already has a 50GB partition with a Win XP (the rest of the space is not partitioned). The 300GB disk has a 240GB partition for Ubuntu, and the rest is a FAT partition which I don't care if it gets copied or not to the new disk. So how can I transfer the entire Ubuntu to the new hard disk and still being able to boot the XP? Is there a way or tool that can help me do over LAN? So I wont have to take out the hdd from the new pc and put it in the older to do the copy.

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• How can I get the name of the current terminal from command-line?

  - by Xubu-Tur

  Is there a possibility to get the type of terminal with a command? If I'm using gnome-terminal the output should be gnome-terminal or something similar. It would be also nice to get the version of the terminal. Update ps -aux | grep `ps -p $$ -o ppid=` will output something like this: user 4239 0.0 0.7 292708 15744 pts/8 Sl 11:39 0:02 xfce4-terminal user 4800 0.0 0.0 6176 820 pts/0 S+ 12:23 0:00 grep --color=auto 4239 This will also work with xterm, but i don't know how to get only the name (xfce4-terminal in this case).

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• How to prevent a Gtk.SourceView from grabbing the URI of a file

  - by laboleite

  I'm making a text editor using GTK3 in Vala. I need to drag a file and, when I drop it into the application window, the application opens that file. I'm using a Gtk.Notebook that contains the Gtk.SourceView's. It works when I drop a file into an empty Gtk.Notebook, but when there is at least one Gtk.SourceView's appended on it, the SourceView grab the URI of the file, shows it and the window can't handle the opening of the file. In this case, what can I do to prevent a Gtk.SourceView from grabbing the uri of a file when I drop a file into a Gtk.SourceView. PS: I tried to use the drag_dest_unset() inside the SourceView derived class. It worked, the SourceView didn't grab the URI and the window could open the file, but the application showed a message like this, in runtime: Gtk-WARNING **: Can't set a target list on a widget until you've called gtk_drag_dest_set() to make the widget into a drag destination

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• Find Nearest Object

  - by ultifinitus

  I have a fairly sizable game engine created, and I'm adding some needed features, such as this, how do I find the nearest object from a list of points? In this case, I could simply use the Pythagorean theorem to find the distance, and check the results. I know I can't simply add x and y, because that's the distance to the object, if you only took right angle turns. However I'm wondering if there's something else I could do? I also have a collision system, where essentially I turn objects into smaller objects on a smaller grid, kind of like a minimap, and only if objects exist in the same gridspace do I check for collisions, I could do the same thing, only make the gridspace larger to check for closeness. (rather than checking every. single. object) however that would take additional setup in my base class and clutter up the already cluttered object. TL;DR Question: Is there something efficient and accurate that I can use to detect which object is closest, based on a list of points and sizes?

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• How To Uninstall Your Windows Product Key Before You Sell Your PC

  - by Taylor Gibb

  Do you have an old PC you want to sell, but also want to use your Windows license on your new PC ? There is a hidden command in Windows that allows you to do just that. Read on to find out more. Note: Between Microsoft and your OEM there are a number of different laws that determine whether you are allowed to use your license on another PC, so follow this tutorial at your own risk. Additionally before you go through the tutorial you will want to check that your product key is still attached to your PC/Installation CD, if it is not , do a quick Google search on how to recover it. 6 Ways Windows 8 Is More Secure Than Windows 7 HTG Explains: Why It’s Good That Your Computer’s RAM Is Full 10 Awesome Improvements For Desktop Users in Windows 8

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• How can I drag and drop files into the Ubuntu One bookmark in Nautilus?

  - by coversnail

  I have a bookmark to my Ubuntu-One folder in the sidebar of Nautilus, it would seem logical that it would be possible to drag and drop files and folders on top of this bookmark and have the dropped items copied to the Ubuntu-One folder to be synced to the cloud. However this does not happen, I can drop files and folders onto the shortcuts underneath "Computer" in the Nautilus sidebar but not onto anything that is a bookmark. Is it possible to change this behaviour so that it is possible? Or failing that are there any possible workarounds to get a similar result?

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• "Operating system not found" after upgrading to 13.10

  - by Hongbo Zhu

  I own a Thinkpad X121e and I upgraded its Ubuntu from 13.04 64bit to 13.10 64bit using the Update Manager. When the upgrade process suggested to restart the system, I restarted the computer and now it says "Operating system not found" after a very brief splash screen. The splash screen says something like (too brief to see everything): Intel UNDI, PXE-2.0 ... For Atheros ethernet Controller ... Check cable connection! PXE-MOF: Exiting INTEL PXE ROM I prepared a startup USB disk using Ubuntu 13.10. I tried the startup USB and it works very well on other computers. So I changed the booting order of X121e and tried all three USB slots, all said "Operating System not found" without any splash screen. I also tried using startup USB with 12.04 LTS. Same results. I do not really want to reinstall the system now. Any hints on how to proceed?

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• Is it safe to Block These URLs with Robots.txt?

  - by Edgar Quintero

  I have a website that has all URLs optimized and 301 redirected from nasty URLs to clean ones. However, everywhere throughout the site the unclean URLs are linked in menus, content, products, etc. Google currently has all clean URLs indexed, along with a few unclean URLs too. So the site still has linked everywhere the old URLs (ideally this wouldn't be the case but this is how it is ATM). I would like to block the unclean URLs with robots.txt. The question: If I block these unclean URLs with the robots.txt, when the entire website is linked with them (but they all redirect to the clean version), will this affect the indexing status at all?

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• Why does the HUD jump around as I type or move my mouse?

  - by Ryan McClure

  I use the Unity Revamped package for my Unity interface. I have noticed that, however, this behavior exists for any account on my computer, even guest, on BOTH the Revamped and the Canonical release of Unity. Here is a link to what it looks like, because it is hard to describe it. I don't know of anyone else who has this issue. I am running Unity 5.16 on Ubuntu 12.04. As an aside, I also have noticed this behavior with a fresh install of 12.10 Beta 1 on a separate partition.

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• Right-click acts too fast - No Fix Yet, Any Workaround?

  - by Aahan Krish

  When I click the right mouse button (anywhere, be it - desktop, browser, console, etc.), the right-click context menu pops up so quickly that the very *first* option in the menu gets clicked. This happens too often to take it easy. This issue has been brought up a couple of times on Ask Ubuntu, but with no fix whatsoever. This is a very low priority issue for the Ubuntu team, I believe? (How could they?!) Is there at least a workaround for the issue? Ubuntu is almost unusable for me as it is now. PS: I have a new mouse. So, please don't go about suggesting that I get a new one - - everything's working fine on Windows 7, so should be the case with ubuntu 11.10, which it is not.

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• Google Search not displaying results from sub-pages

  - by nlovric

  I published a new site with some delicate content on September 26, 2012 UTC and no results from sub-pages - only from the main page - appear in Google Search. Entering "neven lovric" "cat out of the bag" into Google Search finds the main page. Is this type of behavior normal? I ask this because the first site was ceased - my account was locked - by the NameCheap, Inc. Risk Assessment Team, allegedly due to PayPal, Inc. reversing my payment for the extension of the registration of the domain before I was able to publish any content on it. In 2011 UTC, Google, Inc. blocked all results for certain keywords from being displayed to their users in the Arab Republic of Egypt during the demonstrations there. So, considering previous events, this is not an unlikely scenario in this case, also.

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• How can I install ATI Catalyst Video driver of Ubuntu 12.04.3?

  - by Eastsun

  EDIT My computer is Thinkpad E420 with Intel HD3000 and ATI 6630m. I have reinstalled my Ubuntu12.04.3 yesterday. I had successfully installed Ubuntu and ATI Catalyst Video driver many times about half year ago following these links: How do I get AMD/Intel Hybrid Graphics drivers to work? What is the correct way to install ATI Catalyst Video Drivers (fglrx)? However, this time I have no luck with installing ATI Catalyst Video driver. I have tried version 13.4, 13.1, 12.8 of ATI Catalyst Video driver. It seemed that 13.4 doesn't support 12.04 any more, following this link , the lowest Ubuntu version supported by ATI 13.4 is 12.10 and for the reset of the ATI drivers, the kernel version and xorg version of Ubuntu 12.04.3 is too high to be supported. So, should I stay on ubuntu 12.04.1 with ATI 12.8, or there is any way to install ATI driver on Ubuntu 12.04.3?

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• Is it a good approach to rely on 3rd party software ( not library )?

  - by gunbuster363

  We have program using a call to a winzip program or 7zip commandline tool to zip some files. Once I accidentally uninstall winzip on my computer and making one of our program( created by the programmer already left ) crashed. So we cannot uninstall the winzip program. Now I've come to a point which I need to decide a external tool for gzip in windows or I make a java program which I can call to gzip the file. Obviously a external tool such as 7z is convenient and we can avoid some extra coding with java. On the contrary, if 7z is uninstalled accidentally, our program will crash. What do you think?

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• joomla 2.5 : list links to articles in 2 columns

  - by semyon

  I have a Joomla! 2.5 website, and I have to add a lightbox popup that will contain links to all articles from a specific category(+subs). If anyone can suggest all-in-one solution, that will be great! But generally I'm asking, how to list links to all articles from a specific category and its sub-categories in two/three columns? I know I can set Category blog View to output only article links, without full/introtext, but in this case links will all be in one column. I need at least two. A possibility of grouping article links by subcategory would be great as well (but this is the thing I can live without). How can this be done? I'm looking for: a standard way of configuring this Template override (I'm using T3 framework) Custom extension any other method ...

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• How do I disable the "enable/disable wireless" shortcut key on my laptop?

  - by Matthew

  On my Dell Studio XPS 16, I sometimes accidentally hit this key. Wireless becomes disabled, and hitting it again does not re-enable wireless. I have to hit it an odd number of times, then restart my computer to re-enable wireless. I can't imagine a situation in which I would want to disable wireless from my keyboard. Is it possible just disable the key all-together, so I can avoid this problem? On a related note, what package do I file the bug against? I'm happy just disabling the key, but that's really just a workaround.

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