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• Recovery from hell - undeleting partition overwritten by Xubuntu 12.10 installer?

  - by DaimyoKirby

  This is turning into a nightmare - following my initial recovery of my two partitions, I went to install Xubuntu 12.10 (again). At this time I had two partitions - one of ~39 GB had Zorin OS 6 installed on it, and another of ~33 GB had nothing installed, just a few files in it that I had manually backed up (moved) there. When I got to the partitioning step, I chose "Replace Zorin OS 6 with Xubuntu 12.10", along with LVM, naturally thinking that the installer wouldn't touch the second partition, since Zorin wasn't installed on it. I was dead wrong. Upon booting my newly installed Xubuntu 12.10, I found in gparted that there were only two partitions - ~255MB, which appears to have the boot stuff in it (it's flagged boot in gparted), and another of ~74 GB. Question: Is there any way to salvage my old files on the non-Zorin ext3 partition? I'm really upset I made such a dumb move (again...), and any and all help is appreciated very, very much!

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• Graphics problems: noise-like glitch, and screen freezes in Ubuntu 13.04

  - by user207253

  I have recently upgraded to 13.04 and am using unity. I am experiencing two intermittent problems with the graphics: 1) All or part of the screen is taken up by 'noise', which lasts for about a second, see screenshot: 2) The launcher panel freezes. I can still move the mouse and the keyboard responds to function keys (I can dim the screen), but I cannot select anything. At the moment I recover by ctr-alt-f1, and restarting lightdm. My computer is a Samsung Chronos 7 laptop, model NP700Z5C, with Intel HD 4000 graphics The same problems occur with lightdm and gdm. I have attempted to install the intel drivers (as the screenshot hints) but these are not indicated as additional drivers in software & updates so I'm not sure whether they are in use. Any suggestions?

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• How to loop through a javascript object and check each key exists in a separate multidimensional object

  - by Paul Atkins

  I have 2 javascript objects and I am trying to loop through one object and check whether the key exists in a second multidimensional object going one level deeper each time. Here are the two objects var check = {'scope':'instance', 'item':'body', 'property': 'background'}; var values = {'instance': {'body' : {'background': '000000'}}}; b.map(check, function(key){ console.log(values[key]); }); How am I able to check 1 level deeper in the values object each time? What I am trying to do is check the values object as follows: 1st values['instance'] 2nd values['instance']['body'] 3rd values['instance']['body']['background'] Thanks

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• Building a Java CMS - What Existing Product Should I Use?

  - by walnutmon

  I'm a Java developer and in need of a CMS. I've spent a lot of time reading about, and tinkering with Liferay but am concerned that it doesn't cover two of my three major concerns I need to have many sites with individual domains HTML/CSS designers need to be able to design the website templates, look and feel, and layouts in their own tools without having to worry about writing scripts Site and page building APIs must be understandable so that a custom builder interface can be created and harness the CMS as opposed to hacking it Liferay nails the first bullet point, but the second two appear to be unsolved. Does anyone have experience with a Java CMS that does all three? Or have any idea how to approach the problem if none exists? Has someone has used a Java CMS and has been able to add this functionality give some insight?

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• Using .add() on the same widget more than once

  - by Dillon Gilmore

  I asked this question on Reddit and was directed here. http://www.reddit.com/r/Ubuntu/comments/vhadl/quickly_dynamic_ui/ Unfortunately I am having the same issue and the problems seems that you can only use .add() on a widget once. So here is my code, self.ui.labels = [] for titles in entries: label = Gtk.Label() self.ui.labels.append(label) self.ui.viewport1.add(self.ui.labels[-1]) self.ui.paned1.show_all() Now, for fun I decided "What would happen if I just manually did..." self.ui.viewport1.add(Gtk.Label()) self.ui.viewport1.add(Gtk.Button()) self.ui.viewport1.add(Gtk.Entry()) For my first code snippet I get this error, Gtk-CRITICAL **: gtk_viewport_add: assertion gtk_bin_get_child (bin) == NULL' failed The error happens an unknown amount of times because the list entries can vary in length, but for my second code snippet it happens exactly twice. This means that when I viewport1.add() it works the first time, but all adds after that receive the error above. So my question, is there a way in python to use .add() on the same widget more than once?

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• Ubuntu Freezes w/ Proxy

  - by jrc03c

  Ubuntu 11.04 freezes completely after a little while when using a proxy. It's fine when it's got a direct Internet connection, but it completely grinds to a halt after about 10 or 15 minutes of traffic through a proxy. Any ideas? UPDATE: Here's some more information. I have a second-generation MacBook, which has both OSX 10.6.8 (Snow Leopard) and Ubuntu 11.04 (Natty Narwhal) installed on it. When running through a proxy, Snow Leopard works fine, but Ubuntu freezes frequently. Any suggestions at all? Or, rather, what other kinds of information do you need?

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• ubuntu 12.10 graphic does not works correctly

  - by Amin

  I have installed Ubuntu 12.10 but my graphic does not works correctly. I used this command to installation: sudo apt-get install fglrx fglrx-amdcccle fglrx-dev But after the restarting my system, the side panel and upper one does not appear any more! I guessed it maybe that I used some incompatible packages so I removed the graphic card driver by this command: sudo apt-get purge fglrx fglrx-amdcccle fglrx-dev and tried it from graphical way from system setting > Software Sources > Aditional drivers and choosed the second option then applied change. But the resault waas such as before way!! I belive it is because of the Ubuntu does not know my graphic card. I am using VAIO VPCEA2TGX (N/A) and my graphic cart version is Mobility Radeon HD 5400 Series if it is matter. So now what is the exact problem and what I have to solve this?

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• Ubuntu 12.10 webapps don't open correctly when using Chromium

  - by Alex

  I have just installed Ubuntu 12.10 completely fresh, the old version of Ubuntu was discarded or overwritten (or whatever you call it). I want to use the Ubuntu webapps with Chromium but I've had several problems. }The first problem is that Chromium won't ask me if I want to install a webapp if I go to a supported site (and I don't already have the webapp installed). The second problem is that when I install the webapp by visiting the site in Firefox, and then I try to open it in Chromium, Ubuntu will open a completely new Chromium icon and window in the Launcher, and the icon will be labeled "Untitled"; also there is no search bar in the new window, only the tab at the top. I've tried using several webapps with Firefox set as the default browser and they work as expected: once the webapp icon is clicked a Firefox window is opened on the Firefox launcher icon, and the window has 'new tab' button and search bar.

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• Utility Queries–Database Files, (and Filegroups)

  - by drsql

  It has been a while since I last posted a utility query, and today, to avoid other work I am supposed to be doing, I decided to go ahead and work on another post.  Today, I went ahead and worked on a server configuration type query. One query I find I use pretty often is the following one that lists the files in the database. In this blog I will include 3 queries.  The first will deal with files and databases, and the second runs in a database to see the files and their filegroups (If there...(read more)

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• Texture not rendering in correct order in xna 4?

  - by user1090751

  I am making a simple board game. In the game there is a fixed background called myTexture and others are textureGoat and textureTiger whicha are to be placed on top of the background(myTexture). But i am having problem that fourth and fifth component is not displaying however, the sixth component( i.e. myTexture) is appearing. Here is my code, please look at it protected override void Draw(GameTime gameTime) { GraphicsDevice.Clear(Color.Green); // TODO: Add your drawing code here spriteBatch.Begin(SpriteSortMode.BackToFront, BlendState.AlphaBlend); //placing tiger spriteBatch.Draw(textureTiger, new Rectangle(22, 25, 50, 50), Color.White);//first component spriteBatch.Draw(textureTiger, new Rectangle(22, 407, 50, 50), Color.White);//second component spriteBatch.Draw(textureTiger, new Rectangle(422, 25, 50, 50), Color.White);//third component spriteBatch.Draw(textureTiger, new Rectangle(422, 407, 50, 50), Color.White);//fourth component //placing goat spriteBatch.Draw(textureGoat, new Rectangle(125, 110, 50, 50), Color.White);//fifth component //placing background spriteBatch.Draw(myTexture, new Rectangle(0, 0, 500, 500), Color.White);//sixth component spriteBatch.End(); base.Draw(gameTime); }

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• 2D fighting bounding boxes

  - by user36420

  I'm prototyping a 2D platformer/brawler game for uni and I'm having some trouble with creating collision/bounding boxes. This is most likely going to end up on a Vita so I do have some library constraints as well as performance implications. None of this has yet been implemented but is all theory. My idea was to have the artist create a sprite sheet for the character animation and then a second identical sprite sheet with the corresponding collisions in a solid colour (e.g green for where the character can be hit and red for dealing damage, near the foot if kicking etc.) With this, I would then parse the collision sheet and generate the various collisions required storing them in the character model. This is the point I feel would be most inefficient. While I think this is a possible solution, I was wondering if there was a more standard way of doing this or a more efficient way as I feel this would have severe performance problems.

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• Over-Current condition on port 7 or 8

  - by Dymatic

  I am having a problem with my USB ports. It shows over-current conditions on ports 7 and 8. I have heard that this is caused by a damaged USB port, and since it is detecting it on two ports it seems that I have two that are broken. I do indeed have two that do not work, so that is not the issue. What I would like to do is disable whatever program is running over-current condition checks. tty's are unusable at this point. Every few second a new over-current condition occurs. Here is the output of dmesg: http://pastebin.com/CuFKRGue Is there an easy way to disable these checks or damage the ports to a point where it will no longer check? Fixing them is not important or an option.

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• What are the Crappy Code Games - What are the challenges?

  - by simonsabin

  This is part of a series on the Crappy Code Games The background Who can enter? What are the challenges? What are the prizes? Why should I attend? Tips on how to win What are the challenges? There are 4 games that you can enter. Each one is to test a different aspect of SQL Server. The High Jump: Generate the highest I/O per second The 100 m dash: Cumulative highest number of I/O’s in 60 seconds The SSIS-athon: Load one billion row fact table in the shortest time The Marathon: Generate the highest...(read more)

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• Did You Know? I'm doing 3 more online seminars with SSWUG!

  - by Kalen Delaney

  As I told you in April , I recorded two more seminars with Stephen Wynkoop, on aspects of Query Processing. The first one will be broadcast on June 30 and the second on August 27. In between, we'll broadcast my Index Internals seminar, on July 23. Workshops can be replayed for up to a week after the broadcast, and you can even buy a DVD of the workshop. You can get more details by clicking on the workshop name, below, or check out the announcement on the SSWUG site at http://www.sswug.org/editorials/default.aspx?id=1948...(read more)

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• The use of LGPL for Commercial use

  - by Smarty Twiti

  I am trying to make my first app for sale, I would like to ask some questions for those who have already sold their software: Have you used a Framework/Lib whose LGPL License? if yes, what are the impressions of your customers? for example, if your customers/ competitors from the market reveal technology/secrets that you used in your solution (as LGPL requires that you make a Dynamic Link (.DLL) for your libs and you clearly tell the use of a Lib/Framework ...). Full story: For my project, I used a framework LGPL/commercial (Dual License) the second one it was too expensive (about 3000 USD) which pushed me to use LGPL.. however I still concerned.. That is why I ask for advise and especially motivations... Please do not hesitate to participate... Thanks in advance.

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• Should concrete classes avoid calling other concrete classes, except for data objects?

  - by Kazark

  In Appendix A to The Art of Unit Testing, Roy Osherove, speaking about ways to write testable code from the start, says, An abstract class shouldn't call concrete classes, and concerete classes shouldn't call concrete classes either, unless they're data objects (objects holding data, with no behavior). (259) The first half of the sentence is simply Dependency Inversion from SOLID. The second half seems rather extreme to me. That means that every time I'm going to write a class that isn't a simple data structure, which is most classes, I should write an interface or abstract class first, right? Is it really worthwhile to go that far in defining abstract classes an interfaces? Can anyone explain why in more detail, or refute it in spite of its benefit for testability?

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• Read the Comments!

  - by Bob Porter

  Originally posted on: http://geekswithblogs.net/blogofbob/archive/2013/06/18/read-the-comments.aspxSorry, I have been lax in posting for quite some time. Hopefully this will be the start of a renewed posting binge! A piece of advice, if you are searching for a solution to an issue, or a recommendation, or anything else on the web, when you find a post or a forum thread do 2 things.  First, check the date on the post of thread. If it is older it may no longer be fully up to date and or inaccurate. Bear that in mind.  Second, READ THE COMMENTS! Often small omissions or other issues in the post itself are resolved in the comments. If the solution to your issue does not appear to work check the comments. There may be a step missing or something else relavent that was raised by a prior reader or the author themselves. Cheers, Robert Porter

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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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• Help make the next Summit even better

  - by Bill Graziano

  After the Summit we send out a survey to capture feedback.  We ask a consistent set of questions so we get good year over year results.  I’ve watched blog posts and email threads with ideas for a better Summit.  I got to sit with Denny and crew again on Saturday night and talk about what worked and what didn’t.  We’d like to capture those ideas in a way that you can vote on what’s important to you.  Please take a second and visit http://feedback.sqlpass.org/.  You can make suggestions, vote on the ideas already posted and add your own comments.  Help PASS make next year’s Summit “The Best Summit Ever!”

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• Why does update-grub not find ubuntu 11.10?

  - by Klaynos

  I've recently installed ubuntu onto my laptop. With the intention of dual booting with windows 7. On installation Grub wasn't loading, the computer continued to boot straight into windows. I loaded a live cd, mounted the installed ubuntu partion (sda6) as /mnt/ and windows boot partition as /mnt/boot Following the second option here: http://ubuntuguide.net/how-to-restore-grub-2-after-reinstalling-windows-xpvistawin7 Through its entirety, so creating a new grub.cfg file. chroot /mnt update-grub Did not find ubuntu, just windows 7 and the windows recovery partition. Thinking this might be a weird quirk that as I was in ubuntu (all be it a live cd) it might not list ubuntu I restarted. Grub loaded but ubuntu was nowhere to be seen. How can I add ubuntu with Grub2? I could have fixed this myself in old grub but I'm pretty much in the dark here. Thanks

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• When designing a job queue, what should determine the scope of a job?

  - by Stuart Pegg

  We've got a job queue system that'll cheerfully process any kind of job given to it. We intend to use it to process jobs that each contain 2 tasks: Job (Pass information from one server to another) Fetch task (get the data, slowly) Send task (send the data, comparatively quickly) The difficulty we're having is that we don't know whether to break the tasks into separate jobs, or process the job in one go. Are there any best practices or useful references on this subject? Is there some obvious benefit to a method that we're missing? So far we can see these benefits for each method: Split Job lease length reflects job length: Rather than total of two Finer granularity on recovery: If we lose outgoing connectivity we can tell them all to retry The starting state of the second task is saved to job history: Helps with debugging (although similar logging could be added in single task method) Single Single job to be scheduled: Less processing overhead Data not stale on recovery: If the outgoing downtime is quite long, the pending Send jobs could be outdated

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• 2D Physics in a networked game (iOS)?

  - by Pedro

  I am researching the possibilities for a new iOS game. It's going to be a run-n-gun type platformer, and I'm looking into the possibility of co-op multiplayer. The game itself wouldn't be very physics intensive, there will most likely be 20-30 physics bodies at any given time. For the multiplayer, I think I would have one player "hosting" and up to 3 other connecting via the Internet. Here's my first question, are there any 2D physics engines that work over a network(preferably open source)? My second question, Does anyone have any thoughts on using a non-networked engine (like Box2D or Chipmunk) and adding the networking component? Since there would not be very much information sent, do you think it would cause a lot of lag?

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• Can't start ubuntu 11.10, Stops at login screen!

  - by Martinpizza

  I have been trying to dual boot ubuntu with windows 7 via WUBI on my custom built pc but without success. When i start the computer i can choose windows or ubuntu i choose ubuntu and when i should get to the login screen the screen just stays purple/pink. Tried safe mode but cant get in there either. I have tried reinstall but did not work either. :( The second time i install ubuntu the screen was purple/pink and the screen was cut of so the left side was on the right side and right side on left side (hard to describe) Third time installing (The last time) it is just like the first time please help!!!! cant get nowhere without help i am kinda new at ubuntu and its creepy commands. Had ubuntu on my old computer. I think the problem is my hardware so here is my computer specs: Amd Fx 6100 Amd HIS Radeon HD 6950 ICEQ X Asus Sabertooth 990fx 1TB Harddrive I have no idea the name on it Please Help me!! Sorry for my bad English! :D

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• Xfce session will not login from login prompt. Why?

  - by hydroparadise

  Well, not sure how I did it, but for some reason I am unable to get past the login screen on Xfce. What's odd is that I had set the machine up (from install) to login automatically. Then when I finish rebooting after installing sudo apt-get install openssh-server and sudo apt-get install vnc4server all the sudden I am getting prompted for my password. I proceed to type my password (successfully might I add) to login, the screen goes black for a second, then brings me right back to the same password prompt. I am able ssh in(now), but I get no love from workstation login. Maybe vnc4server is the culprit? What did I do? And can I fix it? EDIT: The guest account, however will let me login no problem. What gives? I have a sneaking feeling that this could be permission issue.

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• How can I teleport seamlessly, without using interpolation?

  - by modchan

  I've been implementing Bukkit plugin for creating toggleable in-game warping areas that will teleport any catched entity to other similar area. I was going to implement concept of non-Euclidean maze using this plugin, but, unfortunately, I've discovered that doing Entity.teleport() causes client to interpolate movement while teleporting, so player slides towards target like Enderman and receives screen updates, so for a split second all underground stuff is visible. While for "just teleport me where I want" usage this is just fine, it ruins whole idea of seamless teleporting, as player can clearly see when transfer happened even without need to look at debug screen. Is there possibility to somehow disable interpolating while teleporting without modifying client, or maybe prevent client from updating screen while it's being teleported?

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