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• For some reason I can't get ATI FGLRX Drivers to support 3D acceleration on Ubuntu 12.04

  - by HungryMan

  I have an ATI 5650m and I've had 0 issues with 3D Acceleration in the past. I had to reinstall Ubuntu entirely, and now with the 12.6 drivers I get - One or more tools required for installation cannot be found on the system I can't seem to solve this issue. I installed the FGLRX drivers through the "alternate command line" guide on the Ubuntu Wiki including the instructions for getting 3D support. They seem to install but I get an error with vainfo libva: VA-API version 0.32.0 Xlib: extension "XFree86-DRI" missing on display ":0.0". libva: va_getDriverName() returns 0 libva: Trying to open /usr/lib/x86_64-linux-gnu/dri/fglrx_drv_video.so libva error: /usr/lib/x86_64-linux-gnu/dri/fglrx_drv_video.so init failed libva: va_openDriver() returns -1 vaInitialize failed with error code -1 (unknown libva error),exit I have tried help here: http://ubuntuforums.org/showthread.php?t=2014440 It's a bit frustrating as I can do basically nothing without 3D support. I can't use super + direction or super + w or even configure the Unity bar to be 32px. If anyone could help I'd appreciate that.

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• Determining if a visitor left your server

  - by Jeepstone

  We have an Apache server running a PHP website. The site is an e-commerce shop. We currently use Barclays as the payment provider but are seeing a lot of customers drop out at the point at which we transfer them to the payment gateway (hosted with Barclays) I can see specific instances in the shop where orders have been created but not paid/failed but I need to ascertain if the user has definitely left our server (or just failed to reach Barclays). Is there anything in any of the server/access logs that states when a user transferred to a different domain?

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• Nginx , Apache , Mysql , Memcache with server 4G ram. How optimize to enought memory?

  - by TomSawyer

  i have 1 dedicated server with Nginx proxy for Apache. Memcache, mysql, 4G Ram. These day, my visitor on my site wasn't increased, but my server get overload always in some specified time. (9AM - 15PM) Ram in use is increased second by second to full. that's moment, my server will get overload. i have to kill all apache , mysql service and reboot it to get free memory. that's the circle. here is my ram in use at the moment 160(nginx) 220(apache) 512(memcache) 924(mysql) here's process number 4(nginx) 14(apache) 5(memcache) 20(mysql) and here's my my.cnf config. someone can help me to optimize it? [mysqld] datadir=/var/lib/mysql socket=/var/lib/mysql/mysql.sock user=mysql skip-locking skip-networking skip-name-resolve # enable log-slow-queries log-slow-queries = /var/log/mysql-slow-queries.log long_query_time=3 max_connections=200 wait_timeout=64 connect_timeout = 10 interactive_timeout = 25 thread_stack = 512K max_allowed_packet=16M table_cache=1500 read_buffer_size=4M join_buffer_size=4M sort_buffer_size=4M read_rnd_buffer_size = 4M max_heap_table_size=256M tmp_table_size=256M thread_cache=256 query_cache_type=1 query_cache_limit=4M query_cache_size=16M thread_concurrency=8 myisam_sort_buffer_size=128M # Disabling symbolic-links is recommended to prevent assorted security risks symbolic-links=0 [mysqldump] quick max_allowed_packet=16M [mysql] no-auto-rehash [isamchk] key_buffer=256M sort_buffer=256M read_buffer=64M write_buffer=64M [myisamchk] key_buffer=256M sort_buffer=256M read_buffer=64M write_buffer=64M [mysqlhotcopy] interactive-timeout [mysql.server] user=mysql basedir=/var/lib [mysqld_safe] log-error=/var/log/mysqld.log pid-file=/var/run/mysqld/mysqld.pid

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• What to do when blocked

  - by darkcminor

  I began to code different for 3 different projects, and it is alright, I have done it for 5 months, some php, some c, some matlab, but for some reason I got stucked... Usually when I pass through this I leave a while or go to sleep (and while sleeping I'm thinking on a solution to the problem I´m currently facing, the most important or urgent), and usually when I return (If I slept well) I have the solution and code comes easily, I don not know what you think, but I have like 10 consecutive days! I can't get out of the hole, I only see how time is going... What do you do when you lose the inspiration (I know leave it a while works), I mean, when all seems like it is not working, no matter what you do. Some friends say Go get some air, do sports, well I have tried... I know lot of you have passed this stage but How...

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• How will this affect my SEO ranking?

  - by dunc

  I run a fishkeeping website based on a WordPress (PHP) CMS. I've recently put a fairly complex "filter" into place which searches my content for mentions of fish species profiles and turns them into an active link. For example, asdasd this is a test about abdomen to see if the caudal fin will work asdadasdas try again with abdomen and A. panduro and Apistogramma panduro ...becomes asdasd this is a test about abdomen to see if the caudal fin will work asdadasdas try again with abdomen and <a href="/?p=1703" class="link_species">A. panduro</a> and <a href="/?p=1703" class="link_species">Apistogramma panduro</a> On the rest of my website, the species are linked with pretty URLs such as /species/apistogramma-panduro/ but due to the way this filter works, the only information I can get access to is the idof the post. As such, I'm using /?p=1703 or whatever the ID is. What I'd like to know is: how much will this affect my SEO rating/ranking? Will it be detrimental if I don't rewrite the function? Thanks in advance,

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• Redis connection issue

  - by mre

  We are currently experiencing a lot of Redis errors with the message Unable to connect: read error on connection, trying next server We run Redis on FreeBSD using PHP Redis and we have a hard time reproducing the error on Ubuntu so this might be a hint. There's a long-running issue on that topic on github. Basically we get a socket from the operating system with a call to connect(host, port, timeout) in phpredis, but when we do a select(db_index) afterwards, we get an exception. Could there be an issue with persistance? I assume that connect does nothing in the background and select tries to access the connection, which is actually closed. We don't run into a timeout. We tried tuning TIME_WAIT without success. Any other ideas on where the problem might come from? What is the best way to track the issue down? dtrace maybe? Update We are currently looking into our BGSAVE settings. Interestingly it takes half a second and more to create a fork for the process which regularly writes the data to disk (persistence) and maybe redis can't respond to connect() requests during that timespan.

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• Will taking two years off for school in a related field destroy a mid level development career?

  - by rsteckly

  Hi, I know some people have asked about getting back into programming after a break and this is a potential duplicate. I just am in a position where I can go back to school for a graduate degree in Stat/Applied Math. But I'm very worried about the impact it will have on my career and ability to find a job afterwards. I have 3 years experience in .NET on top of a couple of years in PHP. Right now, I'm a senior software engineer. Do you think taking two years off to do math is going to dramatically hurt my marketability?

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• What server-side language should I learn to be able to start big user-input websites (like twitter, facebook, stackexchange...)?

  - by DarkLightA

  I'm thinking ASP.NET, but I don't really know. Can someone tell me what a good server-side language for the "Zuckerberg-dorm-room-starting-up-a-huge-website" deal? I know the latter used PHP, but as I've understood it that's kind of outdated and C#/ASP.NET is a better way to go about it. Is HTML + CSS + JavaScript + C#/ASP.NET MVC + MySQL a good combination for it? Is MySQL combined in ASP.NET MVC? Also, where's a good tutorial for the server-side language you suggest? As mentioned previously it has to be able to handle massive user-input without much fuss.

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• Time it would take me to learn c++ given my speed? [closed]

  - by ashwin

  I am a student in second year of engineering and my life is hard, nowadays. To make my future secure and at least get good jobs, I have started learning C++; I have learned J2SE, ASP.NET (little, basic C#), PHP (little), HTML, CSS, AJAX, Javascript, SQL, a little android development (I have built a benchmark app) in 4 months and have received 1 gold medal in CSS and 1 each in HTML, CSS, Java. I am able to make things in C#, Java and all other, so I can apply all this knowledge. I was able to do all this, because I loved learning and I hate to ask this question. How much time would it take me to learn C++, good-enough to get good jobs at Google, Microsoft? I am currently learning data structures, so that's excluded.

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• OpenShift : la compilation des applications Java dans le Cloud désormais possible, Red Hat étend sa plateforme PaaS

  OpenShift : le développement et la compilation des applications Java dans le Cloud désormais possible Red Hat étend sa plateforme PaaS Red Hat vient d'étendre sa plateforme d'hébergement Cloud OpenShift, qui peut désormais être utilisée non seulement pour déployer des applications, mais également pour développer des projets en utilisant le Cloud. OpenShift est une solution PaaS (Platform as a Service) qui avait été lancée en mai dernier par par Red Hat pour les développeurs open source, afin de concurrencer Windows Azure et Google App Engine. La plateforme permet d'héberger et exécuter des applications en Java, Ruby, Python, PHP et Perl. OpenShift supporte les bas...

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• Is it possible to work with a dedicated server in XNA?

  - by Jake

  Hi I want to release my XNA game to the XBOX platform, but I'm worried about the networking limitations. Basically, I want to have a dedicated (authoritative) server, but it sounds like that is not possible. Which is why I'm wondering about: Using port 80 web calls to php-driven database Using an xbox as a master-server (is that possible?) I like the sound of #1, because I could write my own application to run on the xbox, and I would assume other users could connect to it similar to the p2p architecture. Anyone able to expand on theory #2 above? or #1 as worst-case scenario?

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• No useful DVB-T card found

  - by Edu

  I am using Ubuntu 12.04 3.2.0-26 kernel and I just added a DVB-T card. I did install the media_build as in (http://linuxtv.org/wiki/index.php/How_to_Obtain,_Build_and_Install_V4L-DVB_Device_Drivers) After that the Restricted Drivers appeared on the screen and I installed the Firmware for DVB Cards. lsusb shows Bus 002 Device 005: ID 048d:9005 Integrated Technology Express, Inc. which is my card. lsmod shows these things regarding dvb dvb_usb_it913x 22173 0 dvb_usb 32369 1 dvb_usb_it913x dvb_core 110010 1 dvb_usb rc_core 26343 2 dvb_usb_it913x,dvb_usb Nevertheless there is no /dev/dvb on my linux and Kaffeine does not find the TV turner. Can anybody help me installing my TV Card? Thanks

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• How to balance programming projects between feasibility and usefulness

  - by tyjkenn

  I've become fairly competent as a programmer, but I would not say I am a master. I work independently, most as a hobby, although I have done some freelance PHP work. I tend to find myself dabbling in a lot of things: Java Android SDK, Arduino, game scripting, Lua, etc. I've reached the point where I want to start a real software project, but cannot think of a small enough project that allows me enough practice, while still being able to publish a decent piece of software in a reasonable amount of time, and build up a portfolio. More specifically, I was looking at Ubuntu development, in Python, using the Quickly toolset, which includes the PyGTK libraries. So the question is, what is the best way to come up with a small project that is still useful, as a starting point to a software development career?

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• Adding multiplayer to an HTML5 game

  - by espais

  I am interested in making a game that I currently have a co-op experience, however I'm curious as to the best method of implementing this in HTML5. I have made games before using straight C sockets, and also with the Net library for SDL. What are some of my best options for doing this in a canvas-based environment? At present, all I can come up with are either AJAX/database solutions (with a high refresh rate), or somehow implementing a PHP server that would funnel the data through sockets. The overall gameplay would be a 2.5D platformer-ish type of game, so both clients would need to be continually updated with player positions, enemy positions, projectiles, environmental data, etc.

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• Still no wireless after b43 with Dell Inspiron 1525 (Ubuntu 12.04)

  - by DanielleN

  So I followed the instructions here http://ubuntuforums.org/showthread.php?t=1974006 about how to solve this issue. It worked for a bit and then stopped. After doing a modprobe I could at least see my network and click on it but it would not connect (I can always see it if I look under the listed wireless networks under VPN Connections, however). I'm thinking, from what I read at least, the issue might be that my wireless switch was on during those first steps. Do I now have to undo the b43 install and do it again? Or is there something else I could try? I just made the switch to Linux yesterday, so I am hesitant at this point to mess with anything on my own. I should note now that it was installed by someone who knows what they are doing, so we are all good on that front.

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• Google map in MediaWiki not showing

  - by user67656

  I have upgraded MediaWiki from 1.9.3 to 1.16.1 in a new server. However, the google map is not showing in the link. It's a blank in that page but in the old server with old version it is working fine. I am not a developer so I have no clue on this. Please let me know anybody have any idea on this. you can have a look on the below links http://new.realchicago.org/wiki/index.php/Archer_Heights The first link in which the google map is missing.

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• Website creation preparation [closed]

  - by Loki

  I am in the pre-coding phase of creating a website. I know that it will be account based (users have to register/login to use the features). I also know that the server will have to do certain operations that are timer based, that is to say that user will have events that will trigger at a point chosen by the user and do something. I am searching for a good choice in server-side technology, and was wondering what my options are and what the best choice is. I would prefer open technology and something that doesn't use interpreted languages (Java, .net). My first thought is PHP + PGSQL for serverside and HTML+CSS+JS for clients, but I am still looking at my options.

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• No desktop after installation of nvidia drivers

  - by hovmand

  I have a problem very similar to this guy: Desktop does not show when I installed nvidia drivers!. I have the same problem with the desktop not being present when I install choose the nvidia drivers from the software sources dialog. I've trie the answer mark as the solution, but this doesn't help me. Still get the same result / bug. I've also tried just to reconfigure it, like this guy says: http://ubuntuforums.org/showpost.php?p=12303179&postcount=4, but that didn't help me either. Then someone suggested that I should try Bumblebee. I followed the installation (https://wiki.ubuntu.com/Bumblebee#Installation) and after the reboot the resolution was still crappy, but this time the desktop did show up, but with bad graphics and I couldn't use optirun and it turned out that bumblebee couldn't start. I hope someone might know whats wrong or what I'm doing wrong. I have a Lenovo W520 with a nvidia Quadro FX 880M and I'm running ubuntu 12.10

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• iptables rule on INPUT between 2 ethernet cards on the same host

  - by user1495181

  I have 2 eth cards on the same host. Both connected directly with LAN cable. I set eth0 with ip - 192.168.1.2 I set eth1 with ip - 192.168.1.1 I set this rule: iptables -A INPUT -p tcp -j NFQUEUE --queue-num 0 There are no other rules. (I ran iptables -X,-F) I send TCP syn packet ( with c++ program by using raw socket) from 192.168.1.2 to 192.168.1.1 In wireshark i see that the packet received on eth0, but the iptables rule (above) dosnt apply for this packet. when i sent the packet to remote host and apply this rule on the remote host than it work correct. So, i guess that this is due to the fact that both eth cards exists the same host. . I need to create iptables INPUT rule for local eth card (dest and src on the same machine ). I need it for simplify test. Did i guess the problem correct? is there a way to bypass this? Ps - connected them via switch didn't help. the rule wasn't applied. Run on Ubuntu. TCDUMP show the packet: 10:48:42.365002 IP 192.168.1.2.38550 > 192.168.1.1.34298: Flags [S], seq 0, win 5840, length 0 but logging of iptables like this, has nothing: iptables -A INPUT -p tcp -j LOG --log-prefix '*****************' iptables -A OUTPUT -p tcp -j LOG --log-prefix '#################'

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• How can I rewrite a subdomain to go to a specific file in a specific folder?

  - by FasterHorses

  I've done searching for my answer and have tested a few solutions, but nothing has worked so far. I'm trying to get a URL like this: http://baseball.sports.com to rewrite to... http://pro.sports.com/baseball-index.php However, I still need to keep the domain the same (http://baseball.sports.com). The reason being I have about 5 subdomains (baseball, football, soccer, etc) that I want to run off the same code base (pro.sports.com). Everything is on the same server. I'd be happy to answer any other questions that would help me get a resolution. I truly appreciate any direction that can be given to me to solve this. Thanks! --Nick

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• What is a good way to comment if-else-clauses?

  - by acme

  Whenever I'm writing a typical if-else-construct in any language I wonder what would be the best way (in terms of readability and overview) to add comments to it. Especially when commenting the else clause the comments always feel out-of-place for me. Say we have a construct like this (examples are written down in PHP): if ($big == true) { bigMagic(); } else { smallMagic() } I could comment it like this: // check, what kind of magic should happen if ($big == true) { // do some big magic stuff bigMagic(); } else { // small magic is enough smallMagic() } or // check, what kind of magic should happen // do some big magic stuff if ($big == true) { bigMagic(); } // small magic is enough else { smallMagic() } or // check, what kind of magic should happen // if: do some big magic stuff // else: small magic is enough if ($big == true) { bigMagic(); } else { smallMagic() } What are your best-practice examples for commenting this?

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• What's Your Method of not forgetting the end brackets, parentheses

  - by JMC Creative

  disclaimer: for simplicity sake, brackets will refer to brackets, braces, quotes, and parentheses in the couse of this question. Carry on. When writing code, I usually type the beginning and end element first, and then go back and type the inner stuff. This gets to be a lot of backspacing, especially when doing something with many nested elements like: jQuery(function($){$('#element[input="file"]').hover(function(){$(this).fadeOut();})); Is there a more efficient way of remembering how many brackets you've got open ? Or a second example with quotes: <?php echo '<input value="'.$_POST['name'].'" />"; ?>

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• Exalytics at Partners in EMEA

  - by Mike.Hallett(at)Oracle-BI&EPM

  Many partners have got Oracle Exalytics systems on their premises where they can help customers with proof-of-solution demonstrations to show how fast this engineered in-memory analytics solution can be, and how this translates into tangible business benefits.  Any customer with Oracle Analytics (OBIEE, Essbase, Hyperion Planning, Oracle BI-Applications) who is seeking to upgrade their hardware infrastructure, looking for a quick, low risk and cost effective implementation, should contact one of these to test what an Exalytics can do for them. Below is a list of some of our specialist Oracle Partners who have an Exalytics: http://www.arrowecs.fr/produits/index.php?id=82 France http://www.ise-informatik.de/ Germany http://www.hotitem.nl/ Netherlands http://bi.fors.ru/ Russia http://www.synchrotech-group.com/ Switzerland http://www.linkplus.com.tr/ Turkey http://www.rittmanmead.com/ UK

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• Is there anything in .NET that allows me to define a grammar and generate a programming language?

  - by user1525474

  I have a course in which the proffesor has asked us to create a DSL for a our final project. He presented us in the first courses xText with Eclipse. This being a new course, I am still a bit fuzzy on what Domain Specific Languages means. This is my current understanding: a domain specific language is a language that is created for specific problems in software development. Examples of DSL's are PHP, SQL, JavaScript and on the opposite are languages like Java , C# , C++ , Ruby etc. Please feel free to correct me if I am wrong. What I would like to know: is there is any tool for .NET/Visual Studio that is similar to Xtext, that allows me to define a grammar and be allowed to generate a programming language based on that with an activity diagram?

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• DOMDocument programming: a lot of little dilemmas, how to solve them?

  - by Peter Krauss

  I need elegance and performance: how to decide by the "best implementation" for each DOM algorithm that I face. This simple "DOMNodeList grouper" illustrate many little dilemmas: use iterator_to_array or "populate an array", when not all items need to be copied. use clone operator, cloneNode method or import method? use parentNode::method() or documentElement::method? (see here) first removeChild or first replaceChild, no avoids "side effects"? ... My position, today, is only "do an arbitrary choice and follow it in all implementations" (like a "Convention over configuration" principle)... But, there are another considerations? About performance, there are some article showing benchmarks? PS: this is a generic DOM question, any language (PHP, Javascript, Python, etc.) have the problem.

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