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• Can't boot after compiling 3.1 kernel, can only get to terminal

  - by olssy

  Long story short: I tried compiling kernel 3.1 on Ubuntu 11.10 at the same time I had an update waiting for a reboot. Computer would boot to a black screen and would hang there. Ended up installing 11.10 on top of old install with a Live CD. Now I had a purple screen on bootup but it would end up booting. Realized Grub was the problem and tried some stuff but nothing worked. I ended up trying to install propriety ATI video drivers and since that nothing has worked, no grub menu(purple screen) and when it boots into the kernel it ends up hanging, I can sometimes get a terminal up with alt-fx. I have tried removing the ati drivers with the ati script, purging my fglrx driver, reconfiguring my xconf.org and following any tutorial I can find about fixing a broken graphics driver, but to no avail. I've gotten to a point were it seems that the ati propriety drivers are correctly loaded but it still has no grub boot menu and won't boot into Ubuntu. I've chased down my logs and this line is from kern.log: unity-greeter[3269]: segfault at 0 ip b7245cbbsp bf9d3900 error 4 in libgio-2.0.so.0.3000.0[b71ad000+142000] That line leads me to believe I don'T have the correct libgio-2 librairy on my system but have no idea how to find out what package has the correct version... My xorg.conf has no errors and seems to imply the fglrxdrm module got loaded correctly. Would be a bit complicated pasting the whole file here but if it would help I'll post it. LAstly, running fglrxinfo give me: Error: Unable yo open display (null) Any help or link to another tutorial would be appreciated. Thanks.

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• Static / Shared Helper Functions vs Built-In Methods

  - by Nathan

  This is a simple question but a design consideration that I often run across in my day to day development work. Lets say that you have a class that represents some kinds of collection. Public Class ModifiedCustomerOrders Public Property Orders as List(Of ModifiedOrders) End Class Within this class you do all kinds of important work, such as combining many different information sources and, eventually, build the Modified Customer Orders. Now, you have different processes that consume this class, each of which needs a slightly different slice of the ModifiedCustomerOrders items. To enable this, you want to add filtering functionality. How do you go about this? Do you: Add Filtering calls to the ModifiedCustomerOrders class so that you can say: MyOrdersClass.RemoveCanceledOrders() Create a Static / Shared "tooling" class that allows you to call: OrdersFilters.RemoveCanceledOrders(MyOrders) Create an extension method to accomplish the same feat as #2 but with less typing: MyOrders.RemoveCanceledOrders() Create a "Service" method that handles the getting of Orders as appropriate to the calling function, while using one of the previous approaches "under the hood". OrdersService.GetOrdersForProcessA() Others? I tend to prefer the tooling / extension method approaches as they make testing a little bit simpler. Although I dependency inject all my sourcing data into the ModifiedCustomerOrders, having it as part of the class makes it a little bit more complicated to test. Typically, I choose to use extension methods where I am doing parameterless transformations / filters. As they get more complex, I will move it into a static class instead. Thoughts on this approach? How would you approach it?

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• Safari 7 SSL error if using IP-adress

  - by K. Biermann

  I have created my own CA for internal usage and set the root certificate to trustworthy on my machines. With this CA I signed the SSL-certificates for my internal servers. I only address them with their IP and so I used the servers' IP as certificate name. If i connect to the Servers with Chrome or mobile Safari it works without problems, but if I use Safari 7 under Mavericks (on the same machine with the same keychain) i get the following error: "The certificate is not valid (host name mismatch)". I double checked that I entered the correct IP ("https://192.168.2.130"), but I always get the same error. Do I need to enter a different name for the certificate or is it just that Safari doesn't support SSL certificates for IPs? Here is a screenshot of the error message (I can only post images with at least 10 rep): Safari's error message Thanks in advantage and please excuse my bad English :D

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• How to specify console (or primary display) for video adapter?

  - by Igor Zinov'yev

  I have an ASUS ENGT440/DI1GD5 video adapter which has three output ports: D-Sub (HD-15), DVI and HDMI. I am using both the D-Sub and DVI ports, but my main monitor is connected to the DVI output. Everything works fine except for which monitor is designated the console during boot. The video adapter seems to prefer the D-Sub output for the console. When both the VGA and DVI monitors are connected, then the VGA monitor always becomes the console which displays the motherboard logo, POST information and booting progress. When only the DVI monitor is connected, then it becomes the console as desired. How do I make the video adapter always use the DVI output (instead of the VGA port) for the console while booting?

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• Do you feel bad when you have to learn new things?

  - by tactoth

  New thing is not always cool. I see many people say they are very bored by doing the similar things day after day. For me it's the opposite - I'm always learning something new. During the last one and a harf year, nearly every two months I need to do lots of researches on a totally new topic: RTMP, MP4, SIP, VNC, Smooth streaming, ..., I have to read lots of specifications, download tones of open source projects to understand concepts, and turn them into my runnable code. And it was so bad! My brain has never been very sure and very familiar with anything, and when it's close to be sure and familiar, it'll have to switch to next thing. I kind of envy people who build upper level applications because they can be very focusing, and their knowledge set includes most things their job requires. Everything is quite measurable, direct and straightforward. Have you ever had the similar feeling? I'm thinking of asking my boss to assign me some other piece of work so that I work like moving forward on a broad road instead of figuring out a way in the dark, I think it'll be more relaxing, any suggestion?

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• how do I uninstall old kernel options listed in Grub2? [closed]

  - by user12809

  Possible Duplicate: Is there a way to remove/hide old kernel versions? I installed Ubuntu Tweak in Ubuntu 11.10, went to Janitor, and selected and removed old kernels that appeared there (3.0.0-12). Now, the only installed linux-image that appears as 'Installed' in SPM is the most recent one (3.0.0-13), which is the one I want. It did not however eliminate the kernel listing in Grub 2. At boot: However, at boot, in Grub-2, the following options still appear: 3.0.0-13-generic 3.0.0-13-generic (recovery mode) 3.0.0-12 (generic) (on /dev/sde5) 3.0.0-12 (generic (recovery mode) (on /dev/sde5) And, in Terminal, when I change directory (cd) to /boot, and then list (ls), I get the following listed kernels: 3.0.0-13 2.6.38-12 2.6.38-8 (al There is no change when I sudo update-grub in Terminal 1) what is /dev/sde5, and where is it located in the file system, so i can delete it? 2) why the differences between what appears as installed in SPM, what appears at boot in Grub2, and what shows when I list the contents of Grub2 in Terminal? Ultimately, I simply want to remove the 3.0.0-12 kernel options at boot in Grub2. How do I best and simplest do that? Thanks again donofrij is online now Report Post Edit/Delete Message Reply With Quote Multi-Quote This Message Quick reply to this message

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• Subdomain takes the position of main site in Google search result

  - by user3578586

  We have one domain and one sub-domain. Until last week both of them appear in first page of Google search for very important keyword. Unfortunately Google dropped our main domain from search results. our main site has been in first page for 5 years! About one year ago we build this sub-domain. It simply has been redirected to one of pages of main domain. For solving problem we upload a independent site for sub-domain because we guessed that Google think this is our main page of our site. But problem did not solved. What should we do? our main site offer main services and we we want that will be on first page. Shout down sub-domain? Redirect to main site? Put the link of our main site in sub-domain? (About one year ago we put link of this sub-domain to our main site. Google indexed it and continuously bring that to top.) changing in robots.txt ....

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• Show and Tell: What work are you the most proud of? [closed]

  - by dannywartnaby

  Hey, In the spirit of building community, and because it's always cool to see great work being pushed out and created by people, anyone up for a little show and tell? The rules are really simple, and this is supposed to be a bit of fun, so; post a link to a single piece of work (anything you've produced, designed or developed (or helped developed)) and write a little paragraph or two on what it is, what you like about it, the technology you used and perhaps one thing that you learnt from the project. It could be a website, framework, open source project, game, mobile application... etc. So, allow me to start. I'm personally very proud of a tiny iPhone application I designed and developed. It's only available to UK AppStore users, and I only have a small userbase, but, I like it. The application is called Sushi Total: http://knowledgeisporridge.com/sushitotal.html It's written in Objective-C. It's a very simply application that allows you to total up your bill at Yo Sushi restaurants by tapping coloured plates. If I learnt anything from making this application it's this: I believe software should be simple and uncluttered, and that producing an application with one feature is absolutely fine as long as it works really well. So, who's next?

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• Cannot boot: FGLRX 8.780 + Kernel 2.6.35-25

  - by pluc

  The situation before this all happened is pretty standard. I have a HP Pavillion dv5 laptop with an ATI Mobility Radeon 4200 series. It always worked fine with Ubuntu for as long as I can remember. However, at one point, something happened and truly made a majestic mess of things. It might've been extra repos I enabled with Ubuntu Tweak - I do not know. But something made it so that my system would not boot any longer. And when I say "won't boot", this is what I mean: - Durning a normal bootup, any entries (except Windows) selected with GRUB (or BURG, not even sure which one I'm using anymore) will spawn the Ubuntu loading screen - then try to start X (or GDM) 5 times. The screen goes to dark, black and back to the Ubuntu loading screen. Then it just stays there until I spawn another TTY. I have no idea what is happening or why. There are no errors in my logs, and I'm truly at a loss here. I've linked three files: Xorg.0.log, the output of dmesg and the GDM log: Xorg.0.log: http://ubuntu.pastebin.com/tpVKc2tc dmesg: ubuntu.pastebin.com/Nd5aYj45 gdm's :0.log: couldn't post due to lack of points :( Let me know if any of you more knowledgeable folks can restore some sanity in my life. Any help is greatly apreciated.

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• Motherboard: Intel S5520HCR s1366 SSI EEB

  - by Crazy_Bash

  I'm building a storage server for online video streaming. I thought about adding two SSD drive for a OS. other 15*(12 SATA & 3 SSD) drives i want to build with aufs XFS and ethernet 4GB/sec network. But I'm confused a little. S5520HCR board supports 6, SATA/300, RAID: 0, 1, 10, Intel ICH10R. Does it mean i can use SATAIII HDD? I'm planing on buying SEAGATE SV35 Series (3.5, 3??, 64??, SATA III-600). also my Chassis supports up-to 16 sata and the motherboard only 6 what kind of sata controller should i use? What's better in terms of performance 1366 or 2011 socket? My server so far: AIC RSC-3EG-80R-SA1S-2 3U Motherboard: Intel S5520HCR s1366 SSI EEB Kingston DDR3 8192Mb PC3-10600 1333MHz (KVR1333D3N9/8G) Seagate 3000GB 64MB 3.5" 7200rpm SATAIII (ST3000DM001) Kingston 480GB SSD 2.5" SATAIII Intel E1G44HTBLK Intel Xeon E5606 2133MHz/L3-8192Kb/QPI s1366 tray SERVER ACC CARD SAS PCIE 16P HBA 9201-16I LSI00244 SGL LSI

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• Multiple domains for different products?

  - by alexandertr

  I have a website with software applications. Is it good for SEO to choose one keyword rich domain name for each of our software products or should we stick to a single domain? From a user's perspective I think it would be easier to remember a domain that is keyword rich as the user will instantly know what this product is for. But I have read articles that the latest trend in SEO is to stick to one domain for all of your products and invest on this single domain website. Is that true? What do you advise? Should I register a separate domain for each of our products or should I use only one single domain? Should I do a 301 redirect with a .htaccess to a single domain? And what about the sitemaps? Should I register all sites in Google Webmaster Tools and post a separate sitemap for each one of them? should my main site sitemap include all pages or should separate domains have their own sitemaps?

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• Need Directions to become a programmer [closed]

  - by Omin

  Before youguys go on about how there are many types of programmers, please read through the post. Long term goal: Develop my own software (company) Short term goal: Get a job that involves coding/programming Current status: Support Analyst (at a software company but does not involve any programming) with 40k salary, 3rd year computer engineering student I had everything figured out. I'm going to develop a 2D scrolling game for iphone or android, publish the app, sell a bunch, and then apply at a studios as a software developer. And then something hit me. I think I need to get a job that involes programming to learn as much as I can in the shortest time possible. So I got a phone interview at a fast growing start up software company, passed that no problem, but then had to take an online technical assessment. That failed miserably. I thought that if I could just present myself, show that I am hard working, positive attitude, eager to make self improvements, type of a guy, I could get the job. I was wrong. And now, I am lost. Im thinking of staying with my job until I find a new one as a programmer. I will be working, self studying, and trying to make this happen without finishing university. I forgot to mention that the online technical assessment was based on data structures/algorithms, OO design, runtime complexity. I was hoping that I could get some guidence. Should I be focusing on app development or study computer science fundamentals? I have a list of books I can be going through: Learning C# O'Reilly (I got interested in C# because of Unity3D and Mono), C# 5.0 in a Nutshell, Head First Design Patterns, Code Complete, Introduction to Algorithms, Programming Interviews Exposed, Cracking the Coding Interview, The Google Resume.

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• Wifi interface changes name seemingly at random

  - by ray_voelker

  I'm currently having some issues getting a wireless interface to work continuously under an install of Ubuntu 12.04.1 LTS. Some of the issues I'm experiencing include Connection will drop out after some time after it has initially worked. Interface will be a different name after a reboot. For example, wlan0 will become wlan4 when using the ifconfig -a command. Ubuntu will take a long time to boot, looking for network adapters. The purpose of this build is to function as a web kiosk in a library. The computer is supposed to boot up into a web browser, and allow for browsing of the catalog. For some reason this interface does not appear to be working as it should. Are there any explanations for some of these problems I'm having, and perhaps some solutions? The wireless card appears as this after doing an lspci ... Ralink corp. RT2561/RT61 802.11g PCI In the /etc/network/interfaces file I have the following configuration for the interface. auto wlan0 iface wlan0 inet dhcp wireless-essid UDwireless wireless-mode Managed Thanks in advance for help on this.

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• IF Statement using dates for a budget template

  - by Leah Allen

  I am working on a budget and want to automatically account for increases in rent in the correct month, I would also like to account for dates tenants move in or out. I may also sometimes have a tenant in a space all year with no changes to rent. Below is an example of my budget with all three scenarios. SQFT BaseRentperSQft BaseRentIncrease DateofIncrease CommencementDate TermDate Jan-Decbymonth 10,000 $15.00 $15.25 05/01/2013 11/30/2013 10,000 $15.00 04/01/2013 10,000 $15.00 I would like to build a formula to accomplish all criteria. Thanks in advance, I can only write simple IF statements, this one is out of my league.

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• wordpress makes duplicate images of different size

  - by Mark

  I have a wordpress website. I upload my pictures to the media library. And when I import a picture in a post, you get the options, one of which ask you what size to display it in. And doing this results in creating a new image file that is a different size, rather than wordpress using html to control the size of the image. The following image shows how different sized picture copies are made of the same one with different resolution. http://imgur.com/uVqTN Thank you everyone in advance.

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• Getting FreeNX client to work on Mac OS again.

  - by Fantomas

  This problem is not uncommon, but I have not seen a solution that would work for me. Keyboard mapping is completely screwed up - e.g. typing 'damn it' gives me '1cxngw'. All machines have QWERTY keyboards and are set up to use US. [Client] Mac OS version: Version: 10.5.8, Build: 9L30 [Client] Kernel version uname -a Darwin <comp name> 9.8.0 Darwin Kernel Version 9.8.0: Wed Jul 15 16:55:01 PDT 2009; root:xnu-1228.15.4~1/RELEASE_I386 i386 [Client] FreeNX Client version: 3.4.0-8 [Client] MacPorts version: MacPorts 1.8.2 [Client] The X Windows System: XQuartz 2.5.0 (xorg-server 1.7.6) [Server] OS: Ubuntu 9.04 [Server] Kernel: uname -a Linux <comp.name> 2.6.28-18-generic #60-Ubuntu SMP <date> x86_64 GNU/Linux [Server] Other info: please ask for it but do tell me how to query/look for it. Thanks!

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• MAMP and WordPress - Theme is gone

  - by ninjaboi21

  Hey SuperUsers, I hope this is the right section to post this kind of question. If it's not, I am sorry. But to my question: I created a working WordPress blog, running locally with MAMP Pro. I wanted to share my site, and thought I would go public with it, but self hosted. I signed up at DynDNS for my domain and got it working. People can connect, myself included of course. But here goes my problem: Everytime I try to access my website (**.dyndns.info:8888), I am able to access it, but the theme and pictures are gone, so it's only pure text with some links. I can provide a picture of the website if you want it? But what is it I am doing wrong? I tried to enable Web Sharing, but that didn't make a difference. Thank you so much if you can figure this out!

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• Non-dynamic CMS [closed]

  - by user20457

  Some of the web sites I visit every day (news, sports, etc..), although the content changes very often (several times per day), the URLs always have .html extension, what makes me thing that the content has been generated once, and then published as a static page, rather than generated in every call, or even cached in memory. For example, the fictitious site "mysports.com" have a "futbol.html" page, and then yesterday Messi gets injured and they have another thing to put in that page, then I presume they post the new item in their CMS system, and automatically a publishing action is triggered aftewards that recreates "futbol.html" in a CDN with the new item and probably discard the oldest one. Then the ETag changes and clients will get the new page if they try to access it. (the site is fictitious but this is what I believe happened yesterday in the sports site I read) This would fit in the CQRS approach, and I presume they have a huge performance. I know lots of CMS (WP, Drupal, BlogEngine.net, DNN, etc...), but I have never seen any able of doing this, or at least, I was not aware this feautre. How are called those distributed CMS? Which are the most well known? Cheers.

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• QR Codes and Short Links - Please Take A Look [closed]

  - by Joe Turner

  I'm looking for a way to create a QR Code and a shortened link when a form is submitted. I have the QR Code bit, but the link is too long for me and the QR Code looks scary and complicated. The way it works is; the user types in (in this instance) a contract number. Then, a folder is created on the server of that contract number. (www.mysite.com/QR/$contractnumber). Then, using PHP again, I create a QR Code through Google because I know that every QR code will be linking to the same place, just a different ending of the link. The only bit that changes is the $POST... I was wondering if there was a way to shorten the link before it goes to Google? It would have to be through php. The user enters the contact number in the form, then that number(usually around 5/6 digits) will be entered into a already existing command? I'm not an expert in anything, I just know some really random snippets of code... And HTML and CSS, of course. Any help would be appreciated and judging by the few days I have been searching this, I think it might help a few people in the future. I would also like to confirm that the solution can't be one of this visual URLShorteners. If it is, it just needs to be the back-end of it, built into a existing form and QR Generator. Simple?

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• Booting off a ZFS root in 14.04

  - by RJVB

  I've been running a Debian derivative (LMDE) on a ZFS root for half a year now. It was created by cloning a regular ext4-based install with all the necessary packages onto a ZFS pool, chrooting into that pool and recreating a grub menu and bootloader. The system uses an ext-3 dedicated /boot partition. I would like to do the same with Ubuntu 14.04, but have encountered several obstacles. There is no Trusty zfs-grub package The default grub package doesn't have ZFS support built in. I found a small bug in the build system responsible for that (report with patch created) and built my own grub packages. The built-in ZFS support is dysfunctional, it does not add the proper arguments to the kernel command line I thus installed the ZoL grub package I also use on my LMDE system, which does give me a correct grub.cfg However, even with that correct grub.cfg, the boot process apparently doesn't retrieve the bootfs parameter from the ZFS pool; instead the variable that's supposed to receive the value remains empty. As a result, initrd tries to load the default pool ("rpool"), which fails of course. I can however import the pool by hand, and complete the process by hand. If memory serves me well, I also had to disable apparmor, to avoid the boot process from blocking after importing the pool. Am I overlooking something? Just for comparison, I installed the Ubuntu 3.13 kernel on my LMDE system, and that works just fine (i.e. the identical kernel and grub binaries allow successful booting without glitches on LMDE but not on Ubuntu).

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• Java and C# in web development [on hold]

  - by azalut

  I am wondering whether C# development(ASP.NET) is rather kind of "rapid development" or something "big" like JavaEE/Spring? We all know, that RoR or Django are really rapid-development frameworks - and so - is C# closer to Java "long-timed-development" or to frameworks like the two above - Django, RoR? I am, for now, an amateur Java programmer and sometimes I get annoyed with the amount of code that have to be written to create even a short CRUD app. We need a lot of skills to create at least a small app. I want some change, at least for some time and learn something new. I tried (just few hours) first: RoR, then Django and now I am writing in C#. It seems to be like Java but a little bit extended. In respect of future work as a professional coder - Is it profitable to know both competitive technologies like Java (and its frameworks) and C# with .NET(ASP.NET for example)? Maybe better choice is Python? Or just stop being stupid and still work with Java but with another framework(and master my Java skills) or JavaScript, jQuery to be better at web-development? Actually this question depends on your own opinions that is why I know that this question could be blocked by admins. But main question is in the top of the post I mean: is C# web-development rapid or closer to Java? I am afraid, that if I don't try, I will regret in the future, when I awake and think: oh my god, how could I not get familiar with (another_technology_or_language) Thanks for your attention :) ps I had asked the same question on stackoverflow, but it was hold because of being opinion based. Hope it fits here ;)

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• Software Center does not load

  - by eim

  I'm having problems with opening my Software center and it just shuts off after loading a few seconds. I can't even get it to the main page of the Software Center. I did try to follow these commands but of no avail: sudo apt-get purge software-center sudo apt-get update sudo apt-get install software-center Instead, I get an error after entering the first command: eim@eim-VAIO:~$ sudo apt-get purge software-cente Reading package lists... Error! E: Encountered a section with no Package: header E: **Problem with MergeList** /var/lib/apt/lists/security.ubuntu.com_ubuntu_dists_precise-security_universe_i18n_Translation-en E: The package lists or status file could not be parsed or opened. I tried doing this aswell: Run : cd ~/.cache; rm -r software-center (nothing happened) And this: Add /usr/lib/policykit-1-gnome/polkit-gnome-authentication-agent-1 to the Startup applications error message: eim@eim-VAIO:~$ /usr/lib/policykit-1-gnome/polkit-gnome-authentication-agent-1 Gtk-Message: Not loading module "atk-bridge": The functionality is provided by GTK natively. Please try to not load it. ** (polkit-gnome-authentication-agent-1:3563): WARNING **: Unable to register authentication agent: GDBus.Error:org.freedesktop.PolicyKit1.Error.Failed: An authentication agent already exists for the given subject Cannot register authentication agent: GDBus.Error:org.freedesktop.PolicyKit1.Error.Failed: An authentication agent already exists for the given subject I think I've done all the possible fix to this problem as suggested on my research. But I can't seem to get this work. Can someone please help? NOTE: Okay... Guess I just found the solution to my problem. I'll just post the answer here since I can't answer my own question yet. Open terminal: sudo rm /var/lib/apt/lists/* -vf sudo apt-get update Now I can open my Software Center! I found the answer here: How do I fix a "Problem with MergeList" error when trying to do an update?

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• Windows Server 2003 stops sharing a folder when the server reboots [closed]

  - by evolvd

  I have a file server that will stop sharing a particular folder once the server is rebooted. This problem happened after the server went through a p2v migration. There are no events that seem to correlate to this issue. I was reading http://support.microsoft.com/default.aspx/kb/870964 but I don't think this applies and there are other shares on the same drive that are still there after a reboot. To be clear about the issue; When the server reboots share x is no longer shared any more but share y and z are still there. This has nothing to do with users not being able to see the share. On the server its self the folder that was shared is no longer shared. I wish I had more information to post but after hours on this issue I can't find a way to move forward.

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• Is Samba "remote browse sync" possible across OpenVPN tunnel?

  - by John Reynolds

  I'm connecting 2 TomatoUSB (Shibby build on WNR3500L v2) routers with an OpenVPN routed connection: ----------------------- ----------------------- | Router 1, subnet 20 | <--tunnel--> | Router 2, subnet 21 | ----------------------- ----------------------- Router 1 is the OpenVPN server and Router 2 is a client. Clients attached to the routers on both subnets can ping clients on the other subnet, so the tunnel and routing works. I've enabled file sharing on both, in order to get their Samba WINS servers running. Is it possible to get name resolution across the tunnel? I've tried remote browse sync = 192.168.21.1 in /etc/smb.conf on the server side, to no avail. Also tried using the IP adress that the client gets from the OpenVPN address pool (usually 10.8.0.something), but still no joy.

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• CUDA 4.1 Update

  - by N0xus

  I'm currently working on porting a particle system to update on the GPU via the use of CUDA. With CUDA, I've already passed over the required data I need to the GPU and allocated and copied the date via the host. When I build the project, it all runs fine, but when I run it, the project says I need to allocate my h_position pointer. This pointer is my host pointer and is meant to hold the data. I know I need to pass in the current particle position to the required cudaMemcpy call and they are currently stored in a list with a for loop being created and interated for each particle calling the following line of code: m_particleList[i].positionY = m_particleList[i].positionY - (m_particleList[i].velocity * frameTime * 0.001f); My current host side cuda code looks like this: float* h_position; // Your host pointer. This holds the data (I assume it's already filled with the data.) float* d_position; // Your device pointer, we will allocate and fill this float* d_velocity; float* d_time; int threads_per_block = 128; // You should play with this value int blocks = m_maxParticles/threads_per_block + ( (m_maxParticles%threads_per_block)?1:0 ); const int N = 10; size_t size = N * sizeof(float); cudaMalloc( (void**)&d_position, m_maxParticles * sizeof(float) ); cudaMemcpy( d_position, h_position, m_maxParticles * sizeof(float), cudaMemcpyHostToDevice); Both of which were / can be found inside my UpdateParticle() method. I had originally thought it would be a simple case of changing the h_position variable in the cudaMemcpy to m_particleList[i] but then I get the following error: no suitable conversion function from "ParticleSystemClass::ParticleType" to "const void *" exists I've probably messed up somewhere, but could someone please help fix the issues I'm facing. Everything else seems to running fine, it's just when I try to run the program that certain things hit the fan.

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