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• Does Wake-on-LAN from power state S5 require any OS configuration?

  - by TARehman

  I am configuring a HTPC which I would like to be able to power on using Wake-on-LAN, from the S5 state (full shutdown, still plugged in). The system is running Linux Mint 14 Cinnamon. I'm getting some conflicting information in my searching on the Net. I am not concerned with using WoL to change the state from standby or hibernate to on. Because of the current interface to our TV, the system must be either turned on or turned off. So, basically, this system will cycle from S0 to S5, and from S5 back to S0, and so on. Some tutorials suggest that I need to use ethtool to configure things after enabling WoL in my BIOS, but my understanding is that doing an S5 - S0 power on only requires the BIOS to be configured (since when the computer is in state S5, the OS hasn't even been loaded anyway). Can I use WoL with only the BIOS configured to go from state S5 to S0, or will I need to configure the OS as well?

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• Linux (non-transparent) per-process hugepage accounting

  - by Dan Pritts

  I've recently converted some java apps to run with linux manually-configured hugepages. I've got about 10 tomcats running on a system and I am interested in knowing how much memory each one is using. I can get summary information out of /proc/meminfo as described in Linux Huge Pages Usage Accounting. But I can't find any tools that tell me about the actual per-process hugepage usage. I poked around in /proc/pid/numa_stat and found some interesting information that led me to this grossity: function pshugepage () { HUGEPAGECOUNT=0 for num in `grep 'anon_hugepage.*dirty=' /proc/$@/numa_maps | awk '{print $6}' | sed 's/dirty=//'` ; do HUGEPAGECOUNT=$((HUGEPAGECOUNT+num)) done echo process $@ using $HUGEPAGECOUNT huge pages } The numbers it gives me are plausible, but i'm far from confident this method is correct. Environment is a quad-CPU dell, 64GB ram, RHEL6.3, oracle jdk 1.7.x (current as of 20130728)

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• how can I see a page's referrer in Chrome?

  - by EmmyS

  I've read the "answers" on this question, which is pretty much what I'm asking, but no one actually provides an answer. Nowhere in the Developer Tools (that I can see, anyway) is there a clear indicator of the current page's referring page. This is something that's really easy to find in Firefox; just right-click and choose Page Info. Where is this functionality in Chrome? If it's in the developer tools, which tab is it under? If it's not, is there an extension I can use to get this info? I've tried the Web Developer extension, and can't seem to find this very basic piece of info there, either.

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• Best FFDShow settings for upscaling SD content to 1080p HD?

  - by Richard

  Hi there, I'm running Windows Media Center 7 with ffdshow-tryouts for the decoding of many of the popular video formats. It works great. I've now upgraded my television from SD to 1080p HD and, naturally, I've still got a large number of existing MP4/XviD/DivX items of content which is in SD. I'd like, therefore, to modify the settings of ffdshow so that they are upscaled to 1080p as best as possible. I appreciate that they won't be as good as their HD equivalent - but on the flip side, I'm pretty certain I can do more than just resizing the picture to get the best possible output. Can anyone recommend the best settings in ffdshow to do this? For example, should I apply a sharpen mask? Or Noise Reduction? Or Deinterlace? Alternatively, would it be better to keep them at their current resolution and let the TV (Samsung Series 5 LE32C580) do the upscaling? Thanks.

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• How to change careers

  - by Jack Black

  For the past 4 years I have worked in c# doing web development. I have really enjoyed it, learnt a lot and have a worked hard to get to a position where I am earning good money and enjoy the work. However lately - I have wanted a change. What with the "native renaissance" I would like to change my career from being high level application and web development to more down to the metal native development. I haven't done any c or c++ since Uni over 4 years ago and so I have begun reading text books and websites to brush up. However - one major issue I have is that I have no practical experience with C++ and although I am brushing up on it, there will be a lot I don't know. Most of the jobs I have seen in native code around me all require native experience. The only positions I can find that don't explicitly ask for native experience are junior level positions. In my current role I am a mid level developer and although there would be a lot to learn in a c++ position, I wouldn't class myself as a junior. I guess my question is, how do people solve this issue when changing programming languages for their profession and / or how would you approach this hurdle? Like I said, I would really like to try out native development professionally but I wouldn't want to move back to a junior role. Would employers consider years of managed development and native hobby projects enough experience?

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• Add entire 300 GB filesystem to Git Annex repository?

  - by Ryan Lester

  By default, I get an error that I have too many open files from the process. If I lift the limit manually, I get an error that I'm out of memory. For whatever reason, it seems that Git Annex in its current state is not optimised for this sort of task (adding thousands of files to a repository at once). As a possible solution, my next thought was to do something like: cd / find . -type d | git annex add --$NONRECURSIVELY find . -type f | git annex add # Need to add parent directories of each file first or adding files fails The problem with this solution is that there doesn't seem from the documentation to be a way to non-recursively add a directory in Git Annex. Is there something I'm missing or a workaround for this? If my proposed solution is a dead end, are there other ways that people have solved this problem?

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• Displaying a Paged Grid of Data in ASP.NET MVC

  This article demonstrates how to display a paged grid of data in an ASP.NET MVC application and builds upon the work done in two earlier articles: Displaying a Grid of Data in ASP.NET MVC and Sorting a Grid of Data in ASP.NET MVC. Displaying a Grid of Data in ASP.NET MVC started with creating a new ASP.NET MVC application in Visual Studio, then added the Northwind database to the project and showed how to use Microsoft's Linq-to-SQL tool to access data from the database. The article then looked at creating a Controller and View for displaying a list of product information (the Model). Sorting a Grid of Data in ASP.NET MVC enhanced the application by adding a view-specific Model (ProductGridModel) that provided the View with the sorted collection of products to display along with sort-related information, such as the name of the database column the products were sorted by and whether the products were sorted in ascending or descending order. The Sorting a Grid of Data in ASP.NET MVC article also walked through creating a partial view to render the grid's header row so that each column header was a link that, when clicked, sorted the grid by that column. In this article we enhance the view-specific Model (ProductGridModel) to include paging-related information to include the current page being viewed, how many records to show per page, and how many total records are being paged through. Next, we create an action in the Controller that efficiently retrieves the appropriate subset of records to display and then complete the exercise by building a View that displays the subset of records and includes a paging interface that allows the user to step to the next or previous page, or to jump to a particular page number, we create and use a partial view that displays a numeric paging interface Like with its predecessors, this article offers step-by-step instructions and includes a complete, working demo available for download at the end of the article. Read on to learn more! Read More >

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• As a small business about to overhaul infrastructure and go virtual, how can we take advantage of all the features of the QNAP TS-439 Pro II+?

  - by Sally

  Specifically, how can we benefit from these current list of features? We're very new to this and I want to be able to talk intelligently to our IT consultant. VMware Ready Citrix Ready Built-in iSCSI target service Virtual Disk Drive (via iSCSI Initiator) Remote Replication Multi-LUN per Target LUN Mapping & LUN Masking Support SPC-3 Persistent Reservation Support What other products should we compare this QNAP to? I appreciate how informative the site is, but they only seem to sell their products through a small number of channels. Is QNAP well known? TIA!

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• Dell PowerEdge 6850 Degraded HDD

  - by Matt

  Good Morning, We have a dell power edge 6850 with a degraded drive in the RAID array. I have never had to recover such an issue, so any help or advice would be welcome. Basically it hasn't affected the server at an operating system level, but has slowed down performance, I have a replacement drive in hand but as this is our main database server I want to proceed with extreme caution. My options as I see them are - Can I just hot swap the degraded drive with the new one and the data will automatically re-sync and we are all back to normal presumably this is dependant on the current raid configuration? reading various comments on-line I may need to re-configure the RAID array and re-build the broken drive? This screams disaster to me with the main worry being that I wipe any other data. Option 1 would of course make my day. Thanks in advance

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• What scenarios are implementations of Object Management Group (OMG) Data Distribution Service best suited for?

  - by mindcrime

  I've always been a big fan of asynchronous messaging and pub/sub implementations, but coming from a Java background, I'm most familiar with using JMS based messaging systems, such as JBoss MQ, HornetQ, ActiveMQ, OpenMQ, etc. I've also loosely followed the discussion of AMQP. But I recently became aware of the Data Distribution Service Specification from the Object Management Group, and found there are a couple of open-source implementations: OpenSplice OpenDDS It sounds like this stuff is focused on the kind of high-volume scenarios one tends to associate with financial trading exchanges and what-not. My current interest is more along the lines of notifications related to activity stream processing (think Twitter / Facebook) and am wondering if the DDS servers are worth looking into further. Could anyone who has practical experience with this technology, and/or a deep understanding of it, comment on how useful it is, and what scenarios it is best suited for? How does it stack up against more "traditional" JMS servers, and/or AMQP (or even STOMP or OpenWire, etc?) Edit: FWIW, I found some information at this StackOverflow thread. Not a complete answer, but anybody else finding this question might also find that thread useful, hence the added link.

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• Automatic Login after a Remote Desktop connectio

  - by carlesso

  Hi all. I need to connect via remote desktop to a Windows XP machine (logging out the current user), do some stuff, and then logout the rdesktop session and having a user X which log in (from the front-end I mean). I try to be clearer: I've some windows XP machines which offers some interactive informations in public places. I need to rdekstop them to do some assistance, and then I'd like to logout and have the main user (the one which offers the service) logged back. I know there's a command for the windows prompt to achieve this, but cannot find it out!

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• Hosting files with support for file tagging / keywords

  - by Zev Chonoles

  I have a large (approx. 25GB) collection of files I would like to host online for people to view or download. I have a spare computer I can use as a dedicated server for these files. I'm looking for a method of, or piece of software for, hosting my files where I can assign tags or keywords to the files, and people viewing my files online can search the collection via the tags. By way of approximate solutions I've found so far, I see that there is software such as Collectorz.com or Readerware for creating databases of one's books / music / movies, and these databases can be searched by tags or keywords, and the databases can be made available and searchable online; this would suit my purposes except that my files are not necessarily books, music, or movies, and I want the files themselves accessible online, not a database describing my files. A commercially-available solution like the ones above would be acceptable, but I'd prefer to have the whole setup under my control (i.e. I'd like to either implement it by hand, or use commercial software that doesn't rely on using the company's servers, paying them a continued fee, etc.). The current extent of my internet experience is designing a few Google Sites, so I know there's a fair chance I won't understand the answers I receive, but I'm always happy to have a summer project :)

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• Strange resolution on Ubuntu 11.10

  - by FSchmidt

  I only just installed Ubuntu 11.10, so excuse me if this question is silly ;-) I have a Fujitsu Esprimo Mobile V655, nvidia 8200 graphics, and recently installed Ubuntu 11.10 using wubi. I had to modify booting commands to include nomodeset; otherwise Ubuntu would not boot. Now I did set my screen resolution to 1280 x 720, which is the correct resolution for this screen. Still, the display seems imperfect. The font sizes seem unnatural(too large / stretched) and text is quite blurry (especially in Firefox). Could it have something to do withe the nvidia graphics driver and/or the nomodeset parameter? How can I fix this? Update: I used jockey-gtk to update nvidia to the current version. This improved the resolution dramatically (no blurriness, fonts are good). It also means that I no loger need to include nomodesetin the boot commands. However, other problems were brought up by this. It seems that certain files cannot be accessed - icon (images) are missing, some task bars are completely unstyled (grey, block-form, win97 style). I also get this error message(roughly translated from German, so may be slightly different from actual) every time I reboot: Could not apply the stored configuration for the monitor: none of the chosen modi is compatible with the available modi. I have tried nvidia-xconfig, unity --reset , no improvements. Can anyone help, please?

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• Bejeweled-like game, managing different gem/powerup behaviors?

  - by Wissam

  I thought I'd ask a question and look forward to some insight from this very compelling community. In a Bejeweled-like (Match 3) game, the standard behavior once a valid swap of two adjacent tiles is made is that the resulting matching tiles are destroyed, any tiles now sitting over empty spaces fall to the position above the next present-tile, and any void created above is filled with new tiles. In richer Match-3 games like Bejeweled, 4 in a row (as opposed to just 3) modifies this behavior such that the tile that was swapped is retained, turned into a "flaming" gem, it falls, and then the empty space above is filled. The next time that "flaming gem" is played it explodes and destroys the 8 perimeter tiles, triggers a different animation sequence (neighbors of those 8 tiles being destroyed look like they've been hit by a shockwave then they fall to their respective positions). Scoring is different, the triggered sounds are different, etc. There are even more elaborate behaviors for Match5, Match-cross-pattern, and many powerups that can be purchased, each which produces a more elaborate sequence of events, sounds, animations, scoring, etc... What is the best approach to developing all these different behaviors that respond to players' "move" and her current "performance" and that deviate from the standard sequence of events, scoring, animation, sounds etc, in such a way that we can always flexibly introduce a new "powerup" ? What we are doing now is hard-coding the events of each one, but the task is long and arduous and seems like the wrong approach especially since the game-designers and testers often offer (later) valuable insight on what works better in-game, which means that the code itself may have to be re-written even for minor changes in behavior (say, destroy only 7 neighboring tiles, instead of all 8 in an explosion). ANY pointers for good practices here would be highly appreciated.

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• Wget site mirror, links with rel="<content>" not followed

  - by Pacifika

  Whilst creating a site mirror using wget 1.12 on Ubuntu links with a rel attribute set are not downloaded: <a href="link" rel="tag">text</a> Rel="tag" is a microformat (By adding rel="tag" to a hyperlink, a page indicates that the destination of that hyperlink is an author-designated "tag" (or keyword/subject) for the current page). My WordPress theme uses this for link to tags, so 99% of the site is ignored. Edit: it turns out all my permalinks use rel="bookmark" and are skipped as well. I'm using the following wget command (this ignores robots.txt and also follows nofollow links): wget -mkp -e robots=off http://site How do I make wget follow links with rel set?

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• SQL Server backup and restore process

  - by Nai

  Just wondering what backup processes you guys have. I am currently operating a weekly full database backup with daily differential backups. My understanding is that with such a set up, the difference between Full recovery mode and Simple recovery mode is that with Full recovery mode, I will be able to use the transaction logs to rollback my DB to a specific point in time having applied the latest differential backup. Assuming that in my scenario, the last differential backup serves as my last and ultimate 'save point', I don't see a need to rollback my DB even further back using the logs. This brings me to my question: Is there any additional benefits to be had using a Full recovery mode for my current backup process?

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• How to reassign drive back into MediaShield (nvidia) RAID stripe

  - by scottwed

  So I managed to inadvertently remove the RAID configuration from 1 drive of a 2 drive stripe. I have both drives, unmodified, and undamaged. Specifically for MediaShield RAID, is there any way to reattach the 2nd drive back into the stripe? Current state is the stripe is displayed in Error status, and I have the other drive available, but unassigned. I strongly suspect there is no solution without purging the array completely and redefining the stripe, but I figured it was worth asking before I wipe out the data.

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• How could I implement 3D player collision with rotation in LWJGL?

  - by Tinfoilboy

  I have a problem with my current collision implementation. Currently for player collision, I just use an AABB where I check if another AABB is in the way of the player, as shown in this code. (The code below is a sample of checking for collisions in the Z axis) for (int z = (int) (this.position.getZ()); z > this.position.getZ() - moveSpeed - boundingBoxDepth; z--) { // The maximum Z you can get. int maxZ = (int) (this.position.getZ() - moveSpeed - boundingBoxDepth) + 1; AxisAlignedBoundingBox aabb = WarmupWeekend.getInstance().currentLevel.getAxisAlignedBoundingBoxAt(new Vector3f(this.position.getX(), this.position.getY(), z)); AxisAlignedBoundingBox potentialCameraBB = new AxisAlignedBoundingBox(this, "collider", new Vector3f(this.position.getX(), this.position.getY(), z), boundingBoxWidth, boundingBoxHeight, boundingBoxDepth); if (aabb != null) { if (potentialCameraBB.colliding(aabb) && aabb.COLLIDER_TYPE.equalsIgnoreCase("collider")) { break; } else if (!potentialCameraBB.colliding(aabb) && z == maxZ) { if (this.grounded) { playFootstep(); } this.position.z -= moveSpeed; break; } } else if (z == maxZ) { if (this.grounded) { playFootstep(); } this.position.z -= moveSpeed; break; } } Now, when I tried to implement rotation to this method, everything broke. I'm wondering how I could implement rotation to this block (and as all other checks in each axis are the same) and others. Thanks in advance.

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• ProStar gaming laptop, which had Ubuntu 10.10, won't boot past Grub. Thoughts?

  - by Richard Zak

  At work we have some high-end gaming laptops we use for their dual GPUs. The machines have second generation i7 CPUs, and came with Windows 7. On most of them I installed Ubuntu 10.10, and all was fine. There were two laptops that I wanted to repurpose and wanted to reinstall the OS. It boots the CD (burned Ubuntu installation CD, I've tried 10.10, 11.10, and 12.04, as well as CentOS 6), and when Grub tried to boot the kernel, I just get a cursor blinking in the upper left corner of the screen. I tried the disabling of ACPI and the other items in the advanced menu, but nothing works. I could still boot to the current Linux installation though. I was able to install Windows 7 again, and use WUBI, but I think that works because it uses the Windows bootloader and not Grub. How could it have worked before and not now? I have confirmed that the CD is fine, as are the hard drive and CD drive. I also had the same problem with Debian, and had to boot through Windows 7 to install it.

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• Windows command line built-in compression/extraction tool?

  - by Will Marcouiller

  I need to write a batch file to unzip files to their current folder from a given root folder. Folder 0 |----- Folder 1 | |----- File1.zip | |----- File2.zip | |----- File3.zip | |----- Folder 2 | |----- File4.zip | |----- Folder 3 |----- File5.zip |----- FileN.zip So, I wish that my batch file is launched like so: ocd.bat /d="Folder 0" Then, make it iterate from within the batch file through all of the subfolders to unzip the files exactly where the .zip files are located. So here's my question: Does the Windows (from XP at least) have a command line for its embedded zip tool? Otherwise, shall I stick to another third-party util?

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• Prevent chrome from auto-hiding bookmark bar on google search

  - by Jeromy Anglim

  I am using Chrome 28.0.1500.20 beta on OSX 10.7. In this version, when you perform a google search using the address bar the bookmarks bar disappears. Toggling "always show bookmarks bar" does not restore the bookmark (see screenshot below). I want to always show the bookmark bar. In particular, I often use a bookmarklet that converts a current google search into a Google Scholar search. Is there a way to always show the bookmark bar even when performing a Google search in Chrome?

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• Developing wheel reinventing tendencies into a skill as opposed to reluctantly learning wheel-finding skills? [duplicate]

  - by Korey Hinton

  This question already has an answer here: Is reinventing the wheel really all that bad? 20 answers I am more of a high-level wheel reinventor. I definitely prefer to make use of existing API features built into a language and popular third-party frameworks that I know can solve the problem, however when I have a particular problem that I feel capable of solving within a reasonable time I am very reluctant to find someone else's solution. Here are a few reasons why I reinvent: It takes time to learn a new API API restrictions might exist that I don't know about Avoiding re-work of unfamiliar code I am conflicted between doing what I know and shifting to a new technique I don't feel comfortable with. On one hand I feel like following my instincts and getting really good at solving problems, especially ones that I would never challenge myself with if all I did was try to find answers. And on the other hand I feel like I might be missing out on important skills like saving time by finding the right framework and expanding my knowledge by learning how to use a new framework. I guess my question comes down to this: My current attitude is to stick to the built-in API and APIs I know well* and to not spend my time searching github for a solution to a problem I know I can solve myself within a reasonable amount of time. Is that a reasonable balance for a successful programmer? *Obviously I will still look around for new frameworks that save time and solve/simplify difficult problems.

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• 3D physics engine for accurate collision handling on desktop/laptop computers (non-console)

  - by Georges Oates Larsen

  What are your suggestions for a physics engine that satisfies the following criteria? Capable of calculating collisions between multiple concave mesh-based colliders Handles many collisions going on at once (for instance one mesh being wedged between two others, which themselves may be wedged between two meshes) Does not allow for collider passthrough, even at high speeds. For instance, if I am applying force to a programmatically hinged object that makes it spin, I do not want it to pass through another rigidbody that it collides with while spinning. I have this problem using PhysX As implied before, reacts well to hinged objects, preferably has its own implementation of a hinge, but I am willing to program my own. The important part is that it has some sort of interface that guarantees accurate collision tracking even when dealing with these things Platform independent -- runs on mac as well as PC, also not tied down to specific graphics cards I think that's the best way to explain what I am looking for. Basically, I need SUPER reliable collisions. Something that can't be accomplished with a simple ray casting approach that sends a ray from the last position of the object to the current position (as this object may be potentially large and colliding with small objects via rotation) Bonus points for also including an OPEN SOURCE engine.

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• Thunderbird 16.0.1 with IMAP on Gmail on Windows 7

  - by Joe M

  My Thunderbird Trash folder is messed up and it does not get fixed by "Repair Folder". When I delete a message it goes into the Trash folder but if I try to access the message, I get a pop-up error message: The current operation on Trash did not succeed. The mail server for account for the XXX imail Gmail account responded: Some messages could not be FETCHed The message count in the Trash folder continues to increase. If I look in the Gmail trash folder I can read the deleted messages. Unlike other users that have reported this problem I cannot find a corrupted message in the Gmail Trash folder. In fact I do not find any corrupted messages in my any of Gmail labels.

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• Tools for analyzing performance of SQL Server/Express?

  - by Adam Crossland

  The application that I have customized and continue to support for my client is seeing dramatic performance problems in the field. Simple queries on rather small datasets take over a minute when I would expect them to complete with sub-second times. My current theory is that SQL Server Express 2005 is too limited for the rather non-trivial demands being made of it, but I am not sure how to get about gathering data that I can use to either prove my point or allow me to move on to finding another cause. Can anyone point me toward some tools that would allow me to analyze the load on this database? Information such as simultaneous connections, execution times of individual queries, memory usage, heck just any profiling data at all would be a help. Many thanks.

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