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  • Cloud hosting and single hardware point of failure?

    - by PeterB
    From talking to sales I thought Rackspace Cloud was running on a SAN and compute nodes (as VMWare's offerings do), only to find out it doesn't, so when the host server goes down for maintenance all cloud servers on the server go down (in our case for 2.5 hours). I understand Amazon EC2 also has this single-server point of failure. Which cloud hosting solutions don't rely on a single server? I've yet to find a list by architecture Is there a term that distinguishes between these types of 'cloud'? Is one of these 'grid computing' and the other 'virtualisation'? Can a SAN backed solution provide the same reliability as 2 mirrored cloud servers on (say) Rackspace Cloud? I am more familiar with the VMWare architecture and would like to understand the advantages and disadvantages of each approach. I understand the standard architecture is to have multiple cloud servers and mirrored data between them; until we need multiple database servers I'm wondering if a SAN/node hosting solution would provide the lack of downtime we need without the added complexity.

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  • Low FPS in some games, but hardware not fully used

    - by Mario De Schaepmeester
    I just did a little funny experiment in the game/sim "Train Simulator 2013". I normally have good FPS in it (around 30) at full settings. What I did was make a really, really long train so that the calculations the sim needed to make were enormous (the sim is quite realistic, it takes all things into account like speed/acceleration, G-forces, comfort levels, possible wheel slip and many more, and most of those things on each carriage seperately). This resulted in only 14FPS as reported by the game, but it felt more like 8FPS or so. I have a Logitech G15 keyboard which has an LCD, and it allows me to monitor CPU/RAM and video card load on it. The strange thing is, all CPU cores were busy, but the total load was only about 60% maximum at all times. The video card was only on 30% load (possibly an important note, the memory was full, which is however not unusual for the game in question). The RAM had plenty of room and there weren't many operations as it didn't grow or shrink much. I just have the feeling that the game would run smoother if it used more of my hardware power. Why is it not doing so? I had the same in another game, The Elder Scrolls: Morrowind when using more than 100 mods (that all use scripting) and a few high res texture mods, + a full-on graphics improvement program. The engine is very old (2003), and so I thought this might be the cause (not being optimised for multithreading). I had thought of possible causes, like: The operating system doesn't let the games use all the resources. It doesn't make use of multi-threading appropriately. To eliminate the former, I tried a CPU stress tool and that got 100% CPU juice as I let it run, so the OS is not the problem. I gave its thread the "higher" priority though. My actual question In both games, I did things the engine was not really built to do or support. Can those games' framerate be limited cause of their own engine not being able to cope? What is the real reason and more importantly, can I help it? And in any case, could something actually be wrong with my hardware? It's all reasonably new, a couple of months, and I (almost) never experience any other trouble. Modern and much more demanding games work absolutely fine. Specs CPU: AMD Phenom II 965 X4 @ 3.4gHz RAM: 8GB of DDR3 RAM Video: MSI GTX560 (nVidia chip) with 1GB of GDDR5 memory OS: Windows 7 Ultimate 64 bit Nothing overclocked.

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  • "Disk boot failure" error after installing Windows 7 on SSD

    - by Tony_Henrich
    I have a system with 3 SATA drives which runs fine. Got a new SSD drive and wanted to install a fresh Windows-7 on it. So I removed the boot drive and replaced it with the SSD drive. Installed Windows and when it was done, rebooted and now I get "Disk boot failure. Insert system disk and press enter" error message. I reinstall again and still same message. Removed the SSD and put back the original drive and I got the same message!! I checked the BIOS and things look good. Something is wrong. Two questions: 1- Why isn't the new Windows booting from the SSD? 2- Why isn't the machine booting using the previous working configuration anymore, after removing the SSD? I did connect it during the second Windows installation but it was the last drive in the SATA connector. Would Windows installer mess with its MBR sector?

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  • LVM incorrectly reported missing after power failure

    - by mensi
    We have had a major power failure in the data-center. We are using a set of servers for our storage needs. The main server has several pairs of disks mirrored with mdadm. The resulting /dev/mdX are LVM physical volumes and belong to a big volume-group with all our data. After the powerloss, we had the problem that one of the mdadm devices was not auto-detected due to a missing entry in mdadm.conf. As a consequence, the volumegroup had inactive logical volumes due to the missing PV. We were able to fix the mdadm config and reboot. pvscan shows all expected PVs but one LV still does not come up. vgdisplay shows: [...] Cur PV: 3 Act PV: 2 [...] Neither vgscan nor pvscan show any missing devices. What went wrong? How can we force LVM to activate all PVs?

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  • Ping or accessing WAN IP from LAN results in failure on only one box

    - by ComputerUserGuy
    Morning/evening gents. I purchased a radical domain name today to set up a name for my services and to set up SSL. I configured the SSL fine and all but when I went to my website I couldn't connect. I can connect to the site with any other device in my house and my friend can connect to it as well from outside of the LAN. I am hosting the services with my computer and I can't access the service. Whenever I ping it using the command prompt I get a result of "General Failure.". It saddens me that they couldn't make a better message as it kind of brings me down. I'm not sure what's the deal here as I have all of my firewalls down and my ports are forwarded. Running Windows 7. Thanks for the assistance chaps.

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  • HTG Reviews the CODE Keyboard: Old School Construction Meets Modern Amenities

    - by Jason Fitzpatrick
    There’s nothing quite as satisfying as the smooth and crisp action of a well built keyboard. If you’re tired of  mushy keys and cheap feeling keyboards, a well-constructed mechanical keyboard is a welcome respite from the $10 keyboard that came with your computer. Read on as we put the CODE mechanical keyboard through the paces. What is the CODE Keyboard? The CODE keyboard is a collaboration between manufacturer WASD Keyboards and Jeff Atwood of Coding Horror (the guy behind the Stack Exchange network and Discourse forum software). Atwood’s focus was incorporating the best of traditional mechanical keyboards and the best of modern keyboard usability improvements. In his own words: The world is awash in terrible, crappy, no name how-cheap-can-we-make-it keyboards. There are a few dozen better mechanical keyboard options out there. I’ve owned and used at least six different expensive mechanical keyboards, but I wasn’t satisfied with any of them, either: they didn’t have backlighting, were ugly, had terrible design, or were missing basic functions like media keys. That’s why I originally contacted Weyman Kwong of WASD Keyboards way back in early 2012. I told him that the state of keyboards was unacceptable to me as a geek, and I proposed a partnership wherein I was willing to work with him to do whatever it takes to produce a truly great mechanical keyboard. Even the ardent skeptic who questions whether Atwood has indeed created a truly great mechanical keyboard certainly can’t argue with the position he starts from: there are so many agonizingly crappy keyboards out there. Even worse, in our opinion, is that unless you’re a typist of a certain vintage there’s a good chance you’ve never actually typed on a really nice keyboard. Those that didn’t start using computers until the mid-to-late 1990s most likely have always typed on modern mushy-key keyboards and never known the joy of typing on a really responsive and crisp mechanical keyboard. Is our preference for and love of mechanical keyboards shining through here? Good. We’re not even going to try and hide it. So where does the CODE keyboard stack up in pantheon of keyboards? Read on as we walk you through the simple setup and our experience using the CODE. Setting Up the CODE Keyboard Although the setup of the CODE keyboard is essentially plug and play, there are two distinct setup steps that you likely haven’t had to perform on a previous keyboard. Both highlight the degree of care put into the keyboard and the amount of customization available. Inside the box you’ll find the keyboard, a micro USB cable, a USB-to-PS2 adapter, and a tool which you may be unfamiliar with: a key puller. We’ll return to the key puller in a moment. Unlike the majority of keyboards on the market, the cord isn’t permanently affixed to the keyboard. What does this mean for you? Aside from the obvious need to plug it in yourself, it makes it dead simple to repair your own keyboard cord if it gets attacked by a pet, mangled in a mechanism on your desk, or otherwise damaged. It also makes it easy to take advantage of the cable routing channels in on the underside of the keyboard to  route your cable exactly where you want it. While we’re staring at the underside of the keyboard, check out those beefy rubber feet. By peripherals standards they’re huge (and there is six instead of the usual four). Once you plunk the keyboard down where you want it, it might as well be glued down the rubber feet work so well. After you’ve secured the cable and adjusted it to your liking, there is one more task  before plug the keyboard into the computer. On the bottom left-hand side of the keyboard, you’ll find a small recess in the plastic with some dip switches inside: The dip switches are there to switch hardware functions for various operating systems, keyboard layouts, and to enable/disable function keys. By toggling the dip switches you can change the keyboard from QWERTY mode to Dvorak mode and Colemak mode, the two most popular alternative keyboard configurations. You can also use the switches to enable Mac-functionality (for Command/Option keys). One of our favorite little toggles is the SW3 dip switch: you can disable the Caps Lock key; goodbye accidentally pressing Caps when you mean to press Shift. You can review the entire dip switch configuration chart here. The quick-start for Windows users is simple: double check that all the switches are in the off position (as seen in the photo above) and then simply toggle SW6 on to enable the media and backlighting function keys (this turns the menu key on the keyboard into a function key as typically found on laptop keyboards). After adjusting the dip switches to your liking, plug the keyboard into an open USB port on your computer (or into your PS/2 port using the included adapter). Design, Layout, and Backlighting The CODE keyboard comes in two flavors, a traditional 87-key layout (no number pad) and a traditional 104-key layout (number pad on the right hand side). We identify the layout as traditional because, despite some modern trapping and sneaky shortcuts, the actual form factor of the keyboard from the shape of the keys to the spacing and position is as classic as it comes. You won’t have to learn a new keyboard layout and spend weeks conditioning yourself to a smaller than normal backspace key or a PgUp/PgDn pair in an unconventional location. Just because the keyboard is very conventional in layout, however, doesn’t mean you’ll be missing modern amenities like media-control keys. The following additional functions are hidden in the F11, F12, Pause button, and the 2×6 grid formed by the Insert and Delete rows: keyboard illumination brightness, keyboard illumination on/off, mute, and then the typical play/pause, forward/backward, stop, and volume +/- in Insert and Delete rows, respectively. While we weren’t sure what we’d think of the function-key system at first (especially after retiring a Microsoft Sidewinder keyboard with a huge and easily accessible volume knob on it), it took less than a day for us to adapt to using the Fn key, located next to the right Ctrl key, to adjust our media playback on the fly. Keyboard backlighting is a largely hit-or-miss undertaking but the CODE keyboard nails it. Not only does it have pleasant and easily adjustable through-the-keys lighting but the key switches the keys themselves are attached to are mounted to a steel plate with white paint. Enough of the light reflects off the interior cavity of the keys and then diffuses across the white plate to provide nice even illumination in between the keys. Highlighting the steel plate beneath the keys brings us to the actual construction of the keyboard. It’s rock solid. The 87-key model, the one we tested, is 2.0 pounds. The 104-key is nearly a half pound heavier at 2.42 pounds. Between the steel plate, the extra-thick PCB board beneath the steel plate, and the thick ABS plastic housing, the keyboard has very solid feel to it. Combine that heft with the previously mentioned thick rubber feet and you have a tank-like keyboard that won’t budge a millimeter during normal use. Examining The Keys This is the section of the review the hardcore typists and keyboard ninjas have been waiting for. We’ve looked at the layout of the keyboard, we’ve looked at the general construction of it, but what about the actual keys? There are a wide variety of keyboard construction techniques but the vast majority of modern keyboards use a rubber-dome construction. The key is floated in a plastic frame over a rubber membrane that has a little rubber dome for each key. The press of the physical key compresses the rubber dome downwards and a little bit of conductive material on the inside of the dome’s apex connects with the circuit board. Despite the near ubiquity of the design, many people dislike it. The principal complaint is that dome keyboards require a complete compression to register a keystroke; keyboard designers and enthusiasts refer to this as “bottoming out”. In other words, the register the “b” key, you need to completely press that key down. As such it slows you down and requires additional pressure and movement that, over the course of tens of thousands of keystrokes, adds up to a whole lot of wasted time and fatigue. The CODE keyboard features key switches manufactured by Cherry, a company that has manufactured key switches since the 1960s. Specifically the CODE features Cherry MX Clear switches. These switches feature the same classic design of the other Cherry switches (such as the MX Blue and Brown switch lineups) but they are significantly quieter (yes this is a mechanical keyboard, but no, your neighbors won’t think you’re firing off a machine gun) as they lack the audible click found in most Cherry switches. This isn’t to say that they keyboard doesn’t have a nice audible key press sound when the key is fully depressed, but that the key mechanism isn’t doesn’t create a loud click sound when triggered. One of the great features of the Cherry MX clear is a tactile “bump” that indicates the key has been compressed enough to register the stroke. For touch typists the very subtle tactile feedback is a great indicator that you can move on to the next stroke and provides a welcome speed boost. Even if you’re not trying to break any word-per-minute records, that little bump when pressing the key is satisfying. The Cherry key switches, in addition to providing a much more pleasant typing experience, are also significantly more durable than dome-style key switch. Rubber dome switch membrane keyboards are typically rated for 5-10 million contacts whereas the Cherry mechanical switches are rated for 50 million contacts. You’d have to write the next War and Peace  and follow that up with A Tale of Two Cities: Zombie Edition, and then turn around and transcribe them both into a dozen different languages to even begin putting a tiny dent in the lifecycle of this keyboard. So what do the switches look like under the classicly styled keys? You can take a look yourself with the included key puller. Slide the loop between the keys and then gently beneath the key you wish to remove: Wiggle the key puller gently back and forth while exerting a gentle upward pressure to pop the key off; You can repeat the process for every key, if you ever find yourself needing to extract piles of cat hair, Cheeto dust, or other foreign objects from your keyboard. There it is, the naked switch, the source of that wonderful crisp action with the tactile bump on each keystroke. The last feature worthy of a mention is the N-key rollover functionality of the keyboard. This is a feature you simply won’t find on non-mechanical keyboards and even gaming keyboards typically only have any sort of key roller on the high-frequency keys like WASD. So what is N-key rollover and why do you care? On a typical mass-produced rubber-dome keyboard you cannot simultaneously press more than two keys as the third one doesn’t register. PS/2 keyboards allow for unlimited rollover (in other words you can’t out type the keyboard as all of your keystrokes, no matter how fast, will register); if you use the CODE keyboard with the PS/2 adapter you gain this ability. If you don’t use the PS/2 adapter and use the native USB, you still get 6-key rollover (and the CTRL, ALT, and SHIFT don’t count towards the 6) so realistically you still won’t be able to out type the computer as even the more finger twisting keyboard combos and high speed typing will still fall well within the 6-key rollover. The rollover absolutely doesn’t matter if you’re a slow hunt-and-peck typist, but if you’ve read this far into a keyboard review there’s a good chance that you’re a serious typist and that kind of quality construction and high-number key rollover is a fantastic feature.  The Good, The Bad, and the Verdict We’ve put the CODE keyboard through the paces, we’ve played games with it, typed articles with it, left lengthy comments on Reddit, and otherwise used and abused it like we would any other keyboard. The Good: The construction is rock solid. In an emergency, we’re confident we could use the keyboard as a blunt weapon (and then resume using it later in the day with no ill effect on the keyboard). The Cherry switches are an absolute pleasure to type on; the Clear variety found in the CODE keyboard offer a really nice middle-ground between the gun-shot clack of a louder mechanical switch and the quietness of a lesser-quality dome keyboard without sacrificing quality. Touch typists will love the subtle tactile bump feedback. Dip switch system makes it very easy for users on different systems and with different keyboard layout needs to switch between operating system and keyboard layouts. If you’re investing a chunk of change in a keyboard it’s nice to know you can take it with you to a different operating system or “upgrade” it to a new layout if you decide to take up Dvorak-style typing. The backlighting is perfect. You can adjust it from a barely-visible glow to a blazing light-up-the-room brightness. Whatever your intesity preference, the white-coated steel backplate does a great job diffusing the light between the keys. You can easily remove the keys for cleaning (or to rearrange the letters to support a new keyboard layout). The weight of the unit combined with the extra thick rubber feet keep it planted exactly where you place it on the desk. The Bad: While you’re getting your money’s worth, the $150 price tag is a shock when compared to the $20-60 price tags you find on lower-end keyboards. People used to large dedicated media keys independent of the traditional key layout (such as the large buttons and volume controls found on many modern keyboards) might be off put by the Fn-key style media controls on the CODE. The Verdict: The keyboard is clearly and heavily influenced by the needs of serious typists. Whether you’re a programmer, transcriptionist, or just somebody that wants to leave the lengthiest article comments the Internet has ever seen, the CODE keyboard offers a rock solid typing experience. Yes, $150 isn’t pocket change, but the quality of the CODE keyboard is so high and the typing experience is so enjoyable, you’re easily getting ten times the value you’d get out of purchasing a lesser keyboard. Even compared to other mechanical keyboards on the market, like the Das Keyboard, you’re still getting more for your money as other mechanical keyboards don’t come with the lovely-to-type-on Cherry MX Clear switches, back lighting, and hardware-based operating system keyboard layout switching. If it’s in your budget to upgrade your keyboard (especially if you’ve been slogging along with a low-end rubber-dome keyboard) there’s no good reason to not pickup a CODE keyboard. Key animation courtesy of Geekhack.org user Lethal Squirrel.       

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  • How to Run Low-Cost Minecraft on a Raspberry Pi for Block Building on the Cheap

    - by Jason Fitzpatrick
    We’ve shown you how to run your own blocktastic personal Minecraft server on a Windows/OSX box, but what if you crave something lighter weight, more energy efficient, and always ready for your friends? Read on as we turn a tiny Raspberry Pi machine into a low-cost Minecraft server you can leave on 24/7 for around a penny a day. Why Do I Want to Do This? There’s two aspects to this tutorial, running your own Minecraft server and specifically running that Minecraft server on a Raspberry Pi. Why would you want to run your own Minecraft server? It’s a really great way to extend and build upon the Minecraft play experience. You can leave the server running when you’re not playing so friends and family can join and continue building your world. You can mess around with game variables and introduce mods in a way that isn’t possible when you’re playing the stand-alone game. It also gives you the kind of control over your multiplayer experience that using public servers doesn’t, without incurring the cost of hosting a private server on a remote host. While running a Minecraft server on its own is appealing enough to a dedicated Minecraft fan, running it on the Raspberry Pi is even more appealing. The tiny little Pi uses so little resources that you can leave your Minecraft server running 24/7 for a couple bucks a year. Aside from the initial cost outlay of the Pi, an SD card, and a little bit of time setting it up, you’ll have an always-on Minecraft server at a monthly cost of around one gumball. What Do I Need? For this tutorial you’ll need a mix of hardware and software tools; aside from the actual Raspberry Pi and SD card, everything is free. 1 Raspberry Pi (preferably a 512MB model) 1 4GB+ SD card This tutorial assumes that you have already familiarized yourself with the Raspberry Pi and have installed a copy of the Debian-derivative Raspbian on the device. If you have not got your Pi up and running yet, don’t worry! Check out our guide, The HTG Guide to Getting Started with Raspberry Pi, to get up to speed. Optimizing Raspbian for the Minecraft Server Unlike other builds we’ve shared where you can layer multiple projects over one another (e.g. the Pi is more than powerful enough to serve as a weather/email indicator and a Google Cloud Print server at the same time) running a Minecraft server is a pretty intense operation for the little Pi and we’d strongly recommend dedicating the entire Pi to the process. Minecraft seems like a simple game, with all its blocky-ness and what not, but it’s actually a pretty complex game beneath the simple skin and required a lot of processing power. As such, we’re going to tweak the configuration file and other settings to optimize Rasbian for the job. The first thing you’ll need to do is dig into the Raspi-Config application to make a few minor changes. If you’re installing Raspbian fresh, wait for the last step (which is the Raspi-Config), if you already installed it, head to the terminal and type in “sudo raspi-config” to launch it again. One of the first and most important things we need to attend to is cranking up the overclock setting. We need all the power we can get to make our Minecraft experience enjoyable. In Raspi-Config, select option number 7 “Overclock”. Be prepared for some stern warnings about overclocking, but rest easy knowing that overclocking is directly supported by the Raspberry Pi foundation and has been included in the configuration options since late 2012. Once you’re in the actual selection screen, select “Turbo 1000MhHz”. Again, you’ll be warned that the degree of overclocking you’ve selected carries risks (specifically, potential corruption of the SD card, but no risk of actual hardware damage). Click OK and wait for the device to reset. Next, make sure you’re set to boot to the command prompt, not the desktop. Select number 3 “Enable Boot to Desktop/Scratch”  and make sure “Console Text console” is selected. Back at the Raspi-Config menu, select number 8 “Advanced Options’. There are two critical changes we need to make in here and one option change. First, the critical changes. Select A3 “Memory Split”: Change the amount of memory available to the GPU to 16MB (down from the default 64MB). Our Minecraft server is going to ruin in a GUI-less environment; there’s no reason to allocate any more than the bare minimum to the GPU. After selecting the GPU memory, you’ll be returned to the main menu. Select “Advanced Options” again and then select A4 “SSH”. Within the sub-menu, enable SSH. There is very little reason to keep this Pi connected to a monitor and keyboard, by enabling SSH we can remotely access the machine from anywhere on the network. Finally (and optionally) return again to the “Advanced Options” menu and select A2 “Hostname”. Here you can change your hostname from “raspberrypi” to a more fitting Minecraft name. We opted for the highly creative hostname “minecraft”, but feel free to spice it up a bit with whatever you feel like: creepertown, minecraft4life, or miner-box are all great minecraft server names. That’s it for the Raspbian configuration tab down to the bottom of the main screen and select “Finish” to reboot. After rebooting you can now SSH into your terminal, or continue working from the keyboard hooked up to your Pi (we strongly recommend switching over to SSH as it allows you to easily cut and paste the commands). If you’ve never used SSH before, check out how to use PuTTY with your Pi here. Installing Java on the Pi The Minecraft server runs on Java, so the first thing we need to do on our freshly configured Pi is install it. Log into your Pi via SSH and then, at the command prompt, enter the following command to make a directory for the installation: sudo mkdir /java/ Now we need to download the newest version of Java. At the time of this publication the newest release is the OCT 2013 update and the link/filename we use will reflect that. Please check for a more current version of the Linux ARMv6/7 Java release on the Java download page and update the link/filename accordingly when following our instructions. At the command prompt, enter the following command: sudo wget --no-check-certificate http://www.java.net/download/jdk8/archive/b111/binaries/jdk-8-ea-b111-linux-arm-vfp-hflt-09_oct_2013.tar.gz Once the download has finished successfully, enter the following command: sudo tar zxvf jdk-8-ea-b111-linux-arm-vfp-hflt-09_oct_2013.tar.gz -C /opt/ Fun fact: the /opt/ directory name scheme is a remnant of early Unix design wherein the /opt/ directory was for “optional” software installed after the main operating system; it was the /Program Files/ of the Unix world. After the file has finished extracting, enter: sudo /opt/jdk1.8.0/bin/java -version This command will return the version number of your new Java installation like so: java version "1.8.0-ea" Java(TM) SE Runtime Environment (build 1.8.0-ea-b111) Java HotSpot(TM) Client VM (build 25.0-b53, mixed mode) If you don’t see the above printout (or a variation thereof if you’re using a newer version of Java), try to extract the archive again. If you do see the readout, enter the following command to tidy up after yourself: sudo rm jdk-8-ea-b111-linux-arm-vfp-hflt-09_oct_2013.tar.gz At this point Java is installed and we’re ready to move onto installing our Minecraft server! Installing and Configuring the Minecraft Server Now that we have a foundation for our Minecraft server, it’s time to install the part that matter. We’ll be using SpigotMC a lightweight and stable Minecraft server build that works wonderfully on the Pi. First, grab a copy of the the code with the following command: sudo wget http://ci.md-5.net/job/Spigot/lastSuccessfulBuild/artifact/Spigot-Server/target/spigot.jar This link should remain stable over time, as it points directly to the most current stable release of Spigot, but if you have any issues you can always reference the SpigotMC download page here. After the download finishes successfully, enter the following command: sudo /opt/jdk1.8.0/bin/java -Xms256M -Xmx496M -jar /home/pi/spigot.jar nogui Note: if you’re running the command on a 256MB Pi change the 256 and 496 in the above command to 128 and 256, respectively. Your server will launch and a flurry of on-screen activity will follow. Be prepared to wait around 3-6 minutes or so for the process of setting up the server and generating the map to finish. Future startups will take much less time, around 20-30 seconds. Note: If at any point during the configuration or play process things get really weird (e.g. your new Minecraft server freaks out and starts spawning you in the Nether and killing you instantly), use the “stop” command at the command prompt to gracefully shutdown the server and let you restart and troubleshoot it. After the process has finished, head over to the computer you normally play Minecraft on, fire it up, and click on Multiplayer. You should see your server: If your world doesn’t popup immediately during the network scan, hit the Add button and manually enter the address of your Pi. Once you connect to the server, you’ll see the status change in the server status window: According to the server, we’re in game. According to the actual Minecraft app, we’re also in game but it’s the middle of the night in survival mode: Boo! Spawning in the dead of night, weaponless and without shelter is no way to start things. No worries though, we need to do some more configuration; no time to sit around and get shot at by skeletons. Besides, if you try and play it without some configuration tweaks first, you’ll likely find it quite unstable. We’re just here to confirm the server is up, running, and accepting incoming connections. Once we’ve confirmed the server is running and connectable (albeit not very playable yet), it’s time to shut down the server. Via the server console, enter the command “stop” to shut everything down. When you’re returned to the command prompt, enter the following command: sudo nano server.properties When the configuration file opens up, make the following changes (or just cut and paste our config file minus the first two lines with the name and date stamp): #Minecraft server properties #Thu Oct 17 22:53:51 UTC 2013 generator-settings= #Default is true, toggle to false allow-nether=false level-name=world enable-query=false allow-flight=false server-port=25565 level-type=DEFAULT enable-rcon=false force-gamemode=false level-seed= server-ip= max-build-height=256 spawn-npcs=true white-list=false spawn-animals=true texture-pack= snooper-enabled=true hardcore=false online-mode=true pvp=true difficulty=1 player-idle-timeout=0 gamemode=0 #Default 20; you only need to lower this if you're running #a public server and worried about loads. max-players=20 spawn-monsters=true #Default is 10, 3-5 ideal for Pi view-distance=5 generate-structures=true spawn-protection=16 motd=A Minecraft Server In the server status window, seen through your SSH connection to the pi, enter the following command to give yourself operator status on your Minecraft server (so that you can use more powerful commands in game, without always returning to the server status window). op [your minecraft nickname] At this point things are looking better but we still have a little tweaking to do before the server is really enjoyable. To that end, let’s install some plugins. The first plugin, and the one you should install above all others, is NoSpawnChunks. To install the plugin, first visit the NoSpawnChunks webpage and grab the download link for the most current version. As of this writing the current release is v0.3. Back at the command prompt (the command prompt of your Pi, not the server console–if your server is still active shut it down) enter the following commands: cd /home/pi/plugins sudo wget http://dev.bukkit.org/media/files/586/974/NoSpawnChunks.jar Next, visit the ClearLag plugin page, and grab the latest link (as of this tutorial, it’s v2.6.0). Enter the following at the command prompt: sudo wget http://dev.bukkit.org/media/files/743/213/Clearlag.jar Because the files aren’t compressed in a .ZIP or similar container, that’s all there is to it: the plugins are parked in the plugin directory. (Remember this for future plugin downloads, the file needs to be whateverplugin.jar, so if it’s compressed you need to uncompress it in the plugin directory.) Resart the server: sudo /opt/jdk1.8.0/bin/java -Xms256M -Xmx496M -jar /home/pi/spigot.jar nogui Be prepared for a slightly longer startup time (closer to the 3-6 minutes and much longer than the 30 seconds you just experienced) as the plugins affect the world map and need a minute to massage everything. After the spawn process finishes, type the following at the server console: plugins This lists all the plugins currently active on the server. You should see something like this: If the plugins aren’t loaded, you may need to stop and restart the server. After confirming your plugins are loaded, go ahead and join the game. You should notice significantly snappier play. In addition, you’ll get occasional messages from the plugins indicating they are active, as seen below: At this point Java is installed, the server is installed, and we’ve tweaked our settings for for the Pi.  It’s time to start building with friends!     

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  • Sometimes keyboard & touchpad work... sometimes not

    - by Voyagerfan5761
    When I first ran Ubuntu from CD on this Dell Inspiron 2650, it worked for about ten to fifteen minutes, then it hung (I was probably trying to do too much at once from a Live CD). The next time, my mouse and keyboard didn't work. I rebooted three times and finally got them working. I then installed Ubuntu alongside Windows XP. After installing, selecting the OS in GRUB worked, but my touchpad and keyboard were again not working. I rebooted, and they worked. (I fortunately had a USB mouse with which to reboot.) Booting Ubuntu and then rebooting to enable my keyboard and touchpad has become a routine ever since. Often several reboots are required; at one point I had to reboot over a dozen times in a row before getting a session where everything worked properly. (My installation has been in place for about three days a week now.) I've looked around for a device manager equivalent to no avail. Sometimes the hardware is properly detected, and sometimes it's not. Once or twice I've had the keyboard detected properly but the touchpad not. Plugging in my wireless card also sometimes requires a plug, unplug, and plug again to get it working. So is there some solution? I'm without an Internet connection at home, and this "laptop" is really a wall wart on my desk, so suggestions for packages may take a while to test. Xorg logs I captured two three four sample Xorg logs: one from a startup where the devices worked; one from when they didn't; one from a session where Ubuntu thought my touchpad was a normal mouse; and one from a session where my keyboard worked but the touchpad didn't. See this gist. Updated 2010-12-15 01:50 UTC with Xorg.0.log.keyboardonly file illustrating the case where the keyboard worked but not the touchpad. Updated 2011-01-11 04:10 UTC with Xorg.0.log.touchpadregmouse to illustrate a case where the touchpad was detected as a regular mouse (no "Touchpad" tab in mouse prefs).

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  • Various issues linked to my CD drive, when it has a disc in it

    - by Voyagerfan5761
    When I go to the Desktop and click on a media icon (for my flash drive, a CD, whatever it is), the following problems occur, in this approximate sequence: Nautilus will close if it's open. the desktop icons disappear my Window List shows a button that says "Starting File Manager" the icons reappear the button in Window List disappears Because of this problem, I can no longer drag and drop media, nor can I right-click to perform actions such as "Eject" and "Safely Remove Drive". The same symptoms occur if I click a media icon (that is also present on the desktop) in Nautilus' Computer view, though notably not if I click in the places list on the left. I have confirmed that this problem happens only if there is a CD in the drive (Matshita UJDA360). Also, inserting a disc into the CD drive appears to kill all running programs and restart Nautilus (or X; I'm not sure). Applications like Brasero and Rhythmbox will not start while there is a disc in the drive. Removing the disc doesn't result in the list of media updating; it must be forced to update by clicking on one of the desktop icons and going through one of the above-described cycles. It doesn't seem to matter what type of disc is in the drive. This has happened with CD-RWs I burned years ago using Roxio on Windows XP, the Ubuntu disc I installed from (burned with InfraRecorder Portable under Windows XP), and the retail game disc for Star Trek Armada II. The first indication of a problem was Brasero dying when I tried to insert a disc for erasure and rewriting. Since then, I've drafted several different questions on various issues, finally combining them into this one when I realized that having a CD in the drive was the common link. Could this be a simple driver issue? If Ubuntu is dynamically detecting my hardware on boot, can I specify drivers for devices that I know will be a problem if the default files are used? I'm beginning to think that my laptop, an old Dell Inspiron 2650, is just too old or proprietary-driver-hungry (or something, maybe RAM-starved) for Ubuntu and Windows XP to play nicely alongside each other. Or maybe I just need to carefully take my wall-wart machine to a coffee shop for an afternoon so I can download updates and such from the Internet, as I lack a home connection.

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  • Looking for an ultra portable laptop for Ubuntu

    - by prule
    Hi, I'm in the market for a new laptop, and portability is important since I really only use it when I'm travelling to and from work - primarily for programming. I've been searching high and low for something like this: less than 2kg hopefully Intel i5 (but negotiable) NO dvd drive - just don't need it 4G ram either 7200rpm disk or SSD (ssd preferable) 13 inch screen not too pricey (MacBook Air is about $1700 AUD) available in Australia The Dell Inspiron 13z and Lenovo Edge 13 look close, but I've not found anything that says I'm not going to have a fight with compatibility. The MacBook Air 13 looks like the PERFECT hardware, but I'm afraid it will just be easier to run MacOS than Ubuntu. I want to stay with Ubuntu, but the MacBook Air is only $1700 so I'm in danger of becoming another apple fanboi if I can't find anything competitive. Going through all the sites looking for stuff has been a huge waste of time System 76 doesn't deliver to Australia http://www.linux-laptop.net/ and http://www.linlap.com/ are hard work and not confidence inspiring http://www.vgcomputing.com.au/nsintro.html is hard work again, searching for every laptop they say has excellent compatibility on the web to find out what spec it is http://zareason.com/shop/Strata-Pro-13.html (at $1345 USD) looks interesting, but I've got no idea how much I'll get stung by customs importing Dell Inspiron 13z with i5, 4G, 320 7200rpm disk, ATI Mobility Radeon HD5430 - 1GB, Dell Wireless 1501 802.11b/g/n @ $1200 AUD seems like the only competitor but is it compatible? (Dell support offer no opinion - as far as they are concerned they only have 2 models that are certified for ubuntu) Am I worrying too much about the compatibility? Should I just go with Dell? Or switch to MacOS? (It would be good to have a searchable database that had the full machine specs, and compatibility - I'm thinking about building something... but I don't have much time right now...) Thanks. UPDATE I went with a MacBook Air. The price/weight/power was just right. Everything else was either too pricy (i5) or too heavy, or underpowered (SU7300 1.3GHz). Its a pity, because I didn't really want to leave Ubuntu. I'll still run it on my media center and spare (heavy) laptop.

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  • How common are power supply failures in comparison to hard disk failures?

    - by Adrian Grigore
    Hi, My webhost offers two different types of high availability options for dedicated servers: Redundant hard disks (RAID1) Redundant hard disks (RAID1) plus redundant power supply How common is a power supply failure in comparison to hard disk failure? I know it's not possible to know the exact figures without knowing the exact hardware, but ballpark figures are good enough for me at the moment. Thanks, Adrian

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  • Hardware recommendations / parts list for a modern, quiet ZFS NAS box - 2011-Feb edition [closed]

    - by dandv
    I want to build some really reliable storage for my data, and it seems that ZFS is the only filesystem at the moment that does live checksumming. That rules out DroboPro, so I'm looking to building a quiet ZFS NAS that would start with 4 2TB or larger hard drives. I'd like this system to be very reliable and relatively future-proof for 2-3 years, so I'm willing to invest some $$$ and buy higher end components. I did see questions here and on other forums about low-cost servers, but I'm not looking for those. I'd be super happy to go for an off-the-shelf solution, but I haven't found one that's quiet. I started doing the research (summarized on my wiki), but I realized that it just gets too complicated for what I know as a software dude, and I'm entering the analysis paralysis area. At this point, I'm basically looking for a parts list for a configuration that will work (and is modern), and I know there are folks around here who are way more competent than me. I've built computers and am comfortable assembling one and messing with *nix; I can follow guides; I just want to end the decision process for the hardware and software configuration. What I've researched so far (not that these are very modern components): Case: I think I've settled on the Antec Twelve Hundred case because it cools well, is quiet, and simply has 12 bays that allow elastic mounting. The SilverStone Raven is its counter-candidate, but I find its construction quite odd. For the PSU, I'm torn between Antec CP-850 and Nexus RX-8500, but I did this research more than a year ago. The Nexus has a very uniform power profile, and I'd rather not have the Antec spin up and down based on load. On the other hand, I'm not sure how often my file server will draw more than 400W under use. For the hard drives, I've read that WD Black drives are actually WD RE3 with a software setting changed. I'd also like to buy different drive types, not just 4 WDs. Recommendations? Right now I have a 2TB Hitachi Deskstar 7K300. For the motherboard, CPU and RAM I have no idea, other than the RAM must be ECC. I already asked a question here about ECC RAM, but I was misguided and was looking for a motherboard that would support USB 3.0 as well. I've learned to go with eSATA, or worry about USB later. Then there's the (liquid) cooling, Wi-Fi card, and FreeBSD vs. OpenSolaris Express. Lastly, I'm wondering if I can make this PC into a media server by adding a Blu-ray drive and a good sound card. But support for Blu-Ray is spotty on Linux, and I don't know if Windows 7 on VirtualBox would get sufficient hardware access to output HDMI or SPDIFF signals. (Running OpenSolaris virtualized is not an option because of the reliability risk.) Then there are HDCP concerns. Suggestions on that would be appreciated as well, but I don't want us to get sidetracked. A specific shopping list on the core components would be great, so I can start ordering, and in the meantime educate myself with regards to the other issues. Finally, I think this could become a great FAQ for those technically inclined to build their own ZFS server, but confused by the dizzying array of options out there, and I promise to compile the results and share my experience building and benchmarking the server.

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  • SPException: Catastrophic failure (Exception from HRESULT: 0x8000FFF (E_UNEXPECTED) in Sharepoint

    - by BeraCim
    I've been trying to programmatically copy custom content type and its custom columns from one web to another for some time now, and I always get different errors or exceptions every time. After yet more tries, I received more strange and cryptic exception from Sharepoint after clicking onto a newly copied custom column in a custom content type. I checked the logs, and this is what I got: Unknown SPRequest erorr occurred. More information: 0x80070002 Unable to locate the xml-definition for FieldName with FieldId 'guid without braces', exception: Microsoft.SharePoint.SPException: Catastrophic failure (Exception from HRESULT: 0x8000FFF (E_UNEXPECTED)) ---> System.Runtime.InteropServices.COMException... ... at Microsoft.SharePoint.Library.SPRequestInternalClass.GetGlobalContentTypeXml(String bstrUrl, Int32 type, UInt 32 lcid, Object varIdBytes... Failed to find the content type schema for ct-1033-0x1000blahblahblahcontenttypeId while caching feature data. Unknown SPRequest error occurred. More informationL 0x8000ffff Unable to locate the xml-definition for CType with SPContentTypeId '0x0100MorecontenttypeId', exception: Microsoft.SharePoint.SPException: Catastrophic failure(Exception from HRESULT: 0x8000FFFF (E_UNEXPECTED)) ---> System.Runtime.InteropServices.COMException (0x8000FFFF): Catastrophic failure... ... at Microsoft.SharePoint.Library.SPRequestInternalClass.GetGlobalContentTypeXml(String bstrUrl, Int32 type, UInt 32 lcid, Object varIdBytes... It failed to find quite a few content type schema. I'm confused with what Sharepoint is trying to do here, and why a simple process of copying a custom content type from one web to another just wouldn't work in contrast to the information found on the web e.g. this. Appreciate any help to get over this problem. Thanks.

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  • How to solve "catastrophic failure" with 32-bit COM component in SysWOW64\cscript or wscript

    - by kcrumley
    I'm trying to run a VBScript script that uses a 7-year-old 3rd-party 32-bit COM component on Windows Server 2008 R2, with the command-line 32-bit script host, SysWOW64\cscript.exe. When I call CreateObject on the class, it appears to be successful, but the very first time I try to use a property or method (I've tried several different ones) on the object, it gives me the "catastrophic failure". I have identical results with SysWOW64\wscript.exe, except, of course, that my error message comes in a msgbox instead of the command-line window. I think this has to do specifically with the 64-bit scripting hosts because of the following: The equivalent Classic ASP script, calling the same component and using 95% of the same code, works correctly on the same server, with IIS configured to support 32-bit COM. The same VBScript works correctly on a 32-bit Windows XP machine and a 32-bit Windows Server 2003 machine. The component fails in exactly the same way on my 64-bit Windows 7 machine. My Google searches for solutions to this problem have mostly turned up a lot of different problems that were solved by putting the COM component into a toolbar in Visual Studio. Obviously, that solution doesn't apply here. My questions are: Is there a core problem that is always behind a "catastrophic failure" from a Windows scripting host calling a COM component? Is there a place in a configuration snap-in, or in the registry, where I need to make a change similar to the change I had to make to the IIS Application pool to "Enable 32-bit Applications"? Is there a general place in the Server 2008 R2 Event Viewer that I should be looking, to see if there are any more details on the failure, in case it turns out to be specific to this component? Thanks in advance.

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  • Magento failure.phtml, get the order total

    - by Kieran
    Hello. One of the projects I work on has the failure page and success page in magento as exactly the same and requires some tracking code on both. The tracking code requires the order ID and the amount being ordered. The issue I'm having is trying to get the order total on the failure page. The methods built into the block class Mage_Checkout_Block_Onepage_Failure are getRealOrderId(), getErrorMessage() and getContinueShoppingUrl(), so no help there. I found some code to do what I want on the success page but it doesn't work for the failure page. <?php $orderId = $this->getRealOrderId(); $order = Mage::getSingleton('sales/order'); $order->load($orderId); $_totalData = $order->getData(); $_grand = $_totalData['grand_total']; ?> I dumped $order and $_totalData. $_totalData just an empty array and $order an empty Mage_Sales_Model_Order instance. Does anyone have any suggestions for where to get the grand total of what is being purchased? Regards, Kieran (I'm also having issues testing the success page as I can't get to it, even putting in the correct test card details on the dev server - but I'll find a way around this)

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  • Rails and SWFUpload: Sporadic Failure on Upload and Response Issue

    - by Gimli
    I've got SWFUpload version 2.5 beta 3 attached to my Rails 2.3.2 application and it works great 75% of the time. The other 25%, I get types of failure. The first failure is a failure to upload. The activity starts, but never actually sends the file to the servers. In my JS, when setting breakpoints, it stops between setting the post params and starting the upload (last two lines below): var params = { "authenticity_token": authToken, "photo[name]": $("#photo_name").val(), "photo[description]": $("#photo_description").val(), "photo[post_id]": $("#post_id").val() }; params[keyName] = key; swfu.setPostParams(params); swfu.startUpload(); It just occurred to me that the file might not being queued, but I've got a handler attached to show the file name in a text box and that works consistently. The second issue is this: Sometimes the response string is truncated. I'm rendering a partial in Rails without a layout to show the uploaded file data in my layout. Most of the time this partial comes through fine, but sometimes it comes through as only the first line, or only parts of the first several lines. The variables seem to be coming through into the view just fine. Any ideas? Thanks!

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  • USB software protection dongle for Java with an SDK which is cross-platform “for real”. Does it exist?

    - by Unai Vivi
    What I'd like to ask is if anybody knows about an hardware USB-dongle for software protection which offers a very complete out-of-the-box API support for cross-platform Java deployments. Its SDK should provide a jar (only one, not one different library per OS & bitness) ready to be added to one's project as a library. The jar should contain all the native stuff for the various OSes and bitnesses From the application's point of view, one should continue to write (api calls) once and run everywhere, without having to care where the end-user will run the software The provided jar should itself deal with loading the appropriate native library Does such a thing exist? With what I've tried so far, you have different APIs and compiled libraries for win32, linux32, win64, linux64, etc (or you even have to compile stuff yourself on the target machine), but hey, we're doing Java here, we don't know (and don't care) where the program will run! And we can't expect the end-user to be a software engineer, tweak (and break!) its linux server, link libraries, mess with gcc, litter the filesystem, etc... In general, Java support (in a transparent cross-platform fashion) is quite bad with the dongle SDKs I've evaluated so far (e.g. KeyLok and SecuTech's UniKey). I even purchased (no free evaluation kit available) SecureMetric SDKs&dongles (they should've been "soooo" straighforward to integrate -- according to marketing material :\ ) and they were the worst ever: SecureDongle X has no 64bit support and SecureDongle SD is not cross-platform at all. So, has anyone out there been through this and found the ultimate Java security usb dongle for cross-platform deployments? Note: software is low-volume, high-value; application is off-line (intranet with no internet access), so no online-activation alternatives and the like. -- EDIT Tried out HASP dongles (used to be called "Aladdin"), and added them to the no-no list: here, too, there is no out-of-the-box (out-of-the-jar) support: e.g. end-linux-user has to manually put the .so library (the specific file for the appropriate bitness) in the right place on his filesystem, and export an env. variable accordingly. -- EDIT 2 I really don't understand all the negativity and all the downvoting: is this a taboo topic? Is it so hard to understand that a freelance developer has to put food on the table everyday to feed its family and pay the bills at the end of the month? Please don't talk about "adding value" as a supplier, because that'd be off-topic. Furthermore I'm not in direct contact with end-customers, but there's an intermediate reselling entity: it's this entity I want to prevent selling copies of the software without sharing the revenue. -- EDIT 3 I'd like to emphasize the fact that the question is looking for a technical answer, not one about opinions concerning business models, philosophical lucubrations on the concept of value, resellers' reliability, etc. I cannot change resellers, because this isn't a "general purpose" kind of sw, but a very vertical one and (for some reasons it's not worth explaining here) I must go through them. I just need to prevent the "we sold 2 copies, here's your share [bwahaha we sold 10]" scenario.

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  • Welcome 2011

    - by WeigeltRo
    Things that happened in 2010 MIX10 was absolutely fantastic. Read my report of MIX10 to see why.   The dotnet Cologne 2010, the community conference organized by the .NET user group Köln and my own group Bonn-to-Code.Net became an even bigger success than I dared to dream of.   There was a huge discrepancy between the efforts by Microsoft to support .NET user groups to organize public live streaming events of the PDC keynote (the dotnet Cologne team joined forces with netug  Niederrhein to organize the PDCologne) and the actual content of the keynote. The reaction of the audience at our event was “meh” and even worse I seriously doubt we’ll ever get that number of people to such an event (which on top of that suffered from technical difficulties beyond our control).   What definitely would have deserved the public live streaming event treatment was the Silverlight Firestarter (aka “Silverlight Damage Control”) event. And maybe we would have thought about organizing something if it weren’t for the “burned earth” left by the PDC keynote. Anyway, the stuff shown at the firestarter keynote was the topic of conversations among colleagues days later (“did you see that? oh yeah, that was seriously cool”). Things that I have learned/observed/noticed in 2010 In the long run, there’s a huge difference between “It works pretty well” and “it just works and I never have to think about it”. I had to get rid of my USB graphics adapter powering the third monitor (read about it in this blog post). Various small issues (desktop icons sometimes moving their positions after a reboot for no apparent reasons, at least one game I couldn’t get run at all, all three monitors sometimes simply refusing to wake up after standby) finally made me buy a PCIe 1x graphics adapter. If you’re interested: The combination of a NVIDIA GTX 460 and a GT 220 is running in “don’t make me think” mode for a couple of months now.   PowerPoint 2010 is a seriously cool piece of software. Not only the new hardware-accelerated effects, but also features like built-in background removal and picture processing (which in many cases are simply “good enough” and save a lot of time) or the smart guides.   Outlook 2010 crashes on me a lot. I haven’t been successful in reproducing these crashes, they just happen when every couple of days on different occasions (only thing in common: I clicked something in the main window – yeah, very helpful observation)   Visual Studio 2010 reminds me of Visual Studio 2005 before SP1, which is actually not a good thing to say about a piece of software. I think it’s telling that Microsoft’s message regarding the beta of SP1 has been different from earlier service pack betas (promising an upgrade path for a beta to the RTM sounds to me like “please, please use it NOW!”).   I have a love/hate relationship with ReSharper. I don’t want to develop without it, but at the same time I can’t fail to notice that ReSharper is taking a heavy toll in terms of performance and sometimes stability. Things I’m looking forward to in 2011 Obviously, the dotnet Cologne 2011. We already have been able to score some big name sponsors (Microsoft, Intel), but we’re still looking for more sponsors. And be assured that we’ll make sure that our partners get the most out of their contribution, regardless of how big or small.   MIX11, period.    Silverlight 5 is going to be great. The only thing I’m a bit nervous about is that I still haven’t read anything official on whether C# next version’s async/await will be in it. Leaving that out would be really stupid considering the end-of-2011 release of SL5 (moving the next release way into the future).

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  • Microsoft Ergonomic 7000 keyboard + mouse lag

    - by user115210
    I recently bought a new Microsoft Ergonomic 7000 keyboard. I started to use it with my Ubuntu 12.04 and it lags all the time. I try to be more specific: Even on a minor CPU usage the mouse lags. By minor I mean firefox loading a webpage, or opening an application like conky, gnome-terminal etc. When higher CPU usage occurs the keyboard is lagging too, but by this I mean it misses my hits, so what I type won't appear later. What I tried so far (and did not work)? Disable autosuspend (echo -1 to sys/bus/usb.../autosuspend) and at the same place set level to "on". I have tried several video drivers: Vesa, radeon, newest catalyst (and catalyst beta too) When my keyboard and/or mouse lags I tried an other USB keyboard which works perfectly and the same for the mouse. I tried the keyboard and mouse on a different computer with Linux (Ubuntu, Arch, OpenSuse) too, the same problem appears but not on Windows. I tried to replace the battery sets, and to change channel on the dongle. And also tried to use the dongle from other USB ports. On the same time I am able to use any other wireless mouse. I changed the XkbModel to "microsoft7000" but it did not solve anything. About the hardware: AMD A8 3870K - Radeon HD6550D 8 GB of memory 4 GB of swap (which is almost never used) Here are my PC's details: lsusb: Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 007 Device 002: ID 045e:071d Microsoft Corp. Bus 005 Device 002: ID 0461:4ea7 Primax Electronics, Ltd lspci: 00:00.0 Host bridge: Advanced Micro Devices [AMD] Family 12h Processor Root Complex 00:01.0 VGA compatible controller: Advanced Micro Devices [AMD] nee ATI BeaverCreek [Radeon HD 6550D] 00:11.0 SATA controller: Advanced Micro Devices [AMD] Hudson SATA Controller [IDE mode] (rev 40) 00:12.0 USB controller: Advanced Micro Devices [AMD] Hudson USB OHCI Controller (rev 11) 00:12.2 USB controller: Advanced Micro Devices [AMD] Hudson USB EHCI Controller (rev 11) 00:13.0 USB controller: Advanced Micro Devices [AMD] Hudson USB OHCI Controller (rev 11) 00:13.2 USB controller: Advanced Micro Devices [AMD] Hudson USB EHCI Controller (rev 11) 00:14.0 SMBus: Advanced Micro Devices [AMD] Hudson SMBus Controller (rev 13) 00:14.1 IDE interface: Advanced Micro Devices [AMD] Hudson IDE Controller 00:14.2 Audio device: Advanced Micro Devices [AMD] Hudson Azalia Controller (rev 01) 00:14.3 ISA bridge: Advanced Micro Devices [AMD] Hudson LPC Bridge (rev 11) 00:14.4 PCI bridge: Advanced Micro Devices [AMD] Hudson PCI Bridge (rev 40) 00:14.5 USB controller: Advanced Micro Devices [AMD] Hudson USB OHCI Controller (rev 11) 00:15.0 PCI bridge: Advanced Micro Devices [AMD] Device 43a0 00:15.1 PCI bridge: Advanced Micro Devices [AMD] Device 43a1 00:16.0 USB controller: Advanced Micro Devices [AMD] Hudson USB OHCI Controller (rev 11) 00:16.2 USB controller: Advanced Micro Devices [AMD] Hudson USB EHCI Controller (rev 11) 00:18.0 Host bridge: Advanced Micro Devices [AMD] Family 12h/14h Processor Function 0 (rev 43) 00:18.1 Host bridge: Advanced Micro Devices [AMD] Family 12h/14h Processor Function 1 00:18.2 Host bridge: Advanced Micro Devices [AMD] Family 12h/14h Processor Function 2 00:18.3 Host bridge: Advanced Micro Devices [AMD] Family 12h/14h Processor Function 3 00:18.4 Host bridge: Advanced Micro Devices [AMD] Family 12h/14h Processor Function 4 00:18.5 Host bridge: Advanced Micro Devices [AMD] Family 12h/14h Processor Function 6 00:18.6 Host bridge: Advanced Micro Devices [AMD] Family 12h/14h Processor Function 5 00:18.7 Host bridge: Advanced Micro Devices [AMD] Family 12h/14h Processor Function 7 03:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 06) dmesg | tail -n 150: http://pastebin.com/sGUAAiUe cat /var/log/Xorg.0.log: http://pastebin.com/fny7ZkN4 Note: The Icon7 Twister Evolution is the replacement mouse to use.

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  • SPF hardfail and DKIM failure when recipient has e-mail forwarding

    - by Beaming Mel-Bin
    I configured hardfail SPF for my domain and DKIM message signing on my SMTP server. Since this is the only SMTP server that should be used for outgoing mail from my domain, I didn't foresee any complications. However, consider the following situation: I sent an e-mail message via my SMTP server to my colleague's university e-mail. The problem is that my colleague forwards his university e-mail to his GMail account. These are the headers of the message after it reaches his GMail mailbox: Received-SPF: fail (google.com: domain of [email protected] does not designate 192.168.128.100 as permitted sender) client-ip=192.168.128.100; Authentication-Results: mx.google.com; spf=hardfail (google.com: domain of [email protected] does not designate 192.168.128.100 as permitted sender) [email protected]; dkim=hardfail (test mode) [email protected] (Headers have been sanitized to protect the domains and IP addresses of the non-Google parties) GMail checks the last SMTP server in the delivery chain against my SPF and DKIM records (rightfully so). Since the last STMP server in the delivery chain was the university's server and not my server, the check results in an SPF hardfail and DKIM failure. Fortunately, GMail did not mark the message as spam but I'm concerned that this might cause a problem in the future. Is my implementation of SPF hardfail perhaps too strict? Any other recommendations or potential issues that I should be aware of? Or maybe there is a more ideal configuration for the university's e-mail forwarding procedure? I know that the forwarding server could possibly change the envelope sender but I see that getting messy.

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  • ubuntu 9.04 pptp broken after a power failure

    - by kevin42
    I have a small Ubuntu 9.04 router setup as a NAT box and a PPTP server. After a power failure everything except the PPTP server still works. A windows client gets to "registering your computer on the network" but then says Error 742: The remote computer does not support the required data encryption type. I did some research and I think the problem is with the ppp_mppe module. When I try to run 'modprobe ppp_mppe' it hangs indefinitely. What would cause this hang? Any ideas how I can troubleshoot this further? Thanks for the help! UPDATE: I am still having the problem, however I have found some more information. When the first user tries to connect to pptp, the process list shows modprobe sha1 running, and one instance of modprobe ppp_mppe for each connection attempt. If I killall modprobe at this point the next connection attempt works, and everything is fine until the next reboot. I'm planning to do a clean install at some point in the future but I'd really like to get to the real cause of this.

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  • Catastrophic Failure opening ODBC via Citrix

    - by Joshdan
    We recently had our Citrix server crash unexpectedly. When it came back up, there was a new issue -- every ODBC connection fails with "Catastrophic Failure" (0x8000FFFF). The issue is limited to Citrix / ICA connections; logging in as the same user via RDP works as usual. The following code is my minimal test case (for wscript): ''// test_odbc.vbs strConn = "Driver={Microsoft Text Driver (*.txt; *.csv)};Dbq=c:\files\;" Set rs = CreateObject("ADODB.recordset") strSQL = "SELECT * FROM myFile.csv" wscript.echo "Press OK to Test" ''// This line breaks over Citrix, but not over Terminal Services ''// ---------------------- rs.open strSQL, strConn, 3,3 ''// ---------------------- wscript.echo rs("a") Any insight would be greatly appreciated. Windows Server 2003 SP1, Citrix MetaFrame Presentation Server 4.0. Clients include at least versions 10.2-11 running on 2000-Vista, OS X. ODBC error happens whether a DSN is used or not, on at least Access, MS-SQL, and CSV. Connections both through the SSL Gateway and directly. There have been a few users actually able to log in without trouble, but I can't pin down anything special about them.

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  • Flash Media Server won't run on RHEL 6.2 EC2 instance - _defaultRoot__edge1 experienced 1 failure

    - by edoloughlin
    I've got a fresh Redhat Enterprise 6.2 64-bit instance on EC2. I've turned off the firewall and have installed an FMS 4.5 dev server. The FMS install failed, complaining about a missing libcap.so until I installed the libcap.i686 package. The following libcap packages are now installed: libcap.i686 2.16-5.5.el6 @rhui-us-east-1-rhel-server-releases libcap.x86_64 2.16-5.5.el6 @koji-override-0/$releasever libcap-ng.x86_64 0.6.4-3.el6_0.1 @koji-override-0/$releasever libpcap.x86_64 14:1.0.0-6.20091201git117cb5.el6 In the logs directory I have admin and master logs (only). The admin logs look ok: #Fields: date time x-pid x-status x-ctx x-comment 2012-02-29 09:24:26 1144 (i)2581173 FMS detected IPv6 protocol stack! - 2012-02-29 09:24:26 1144 (i)2581173 FMS config <NetworkingIPv6 enable=false> - 2012-02-29 09:24:26 1144 (i)2581173 FMS running in IPv4 protocol stack mode! - 2012-02-29 09:24:26 1144 (i)2581173 Host: ip-10-204-143-55 IPv4: 10.204.143.55 - 2012-02-29 09:24:26 1144 (i)2571011 Server starting... - 2012-02-29 09:24:26 1144 (i)2631174 Listener started ( FCSAdminIpcProtocol ) : localhost:11110/v4 - 2012-02-29 09:24:27 1144 (i)2631174 Listener started ( FCSAdminAdaptor ) : 1111/v4 - 2012-02-29 09:24:28 1144 (i)2571111 Server started (./conf/Server.xml). - I can't connect an RTMP client to the FMS. The master logs contain these lines, repeating every 5 seconds: 2012-02-29 10:43:17 1076 (i)2581226 Edge (2790) is no longer active. - 2012-02-29 10:43:17 1076 (w)2581255 Edge (2790) _defaultRoot__edge1 experienced 1 failure[s]! - 2012-02-29 10:43:17 1076 (i)2581224 Edge (2793) started, arguments : -edgeports ":1935,80" -coreports "localhost:19350" -conf "/opt/adobe/fms/conf/Server.xml" -adaptor "_defaultRoot_" -name "_defaultRoot__edge1" -edgename "edge1". -

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  • Acronis Disk Director AFTER Clone Disk error: PXE-E61: Media test failure, check cable

    - by Kairan
    Used Acronis Disk Director on my desktop, plugged in the laptop drive 240GB SSD (USB) and the new hard drive 500GB SSD (usb) and the copy seemed to be fine. I didnt see any error messages but I didnt stare at it for 3 hours either. The clone disk of course the Toshiba hidden restore partition, the primary partition C drive and the active (boot?) partition and yes, did check box for copy NT signature. The computer boots up fine most of the time, but it seems that when the computer goes to sleep (i believe its sleep, hard to do much testing during school) or hibernate or reboot it will sometimes display this message: Intel(R) Boot Agent GE v1.3.52 Copyright (C) 1997-2010, Intel Corporation PXE-E61: Media test failure, check cable PXE-M0F: Exiting Intel Boot Agent Insert system disk in drive. Press any key when ready... Of course any key does nothing but repeat a similar method. However, if I press the power button on the laptop (Toshiba Portege R705, Win 7 Pro 64-bit) it puts computer into hibernate. After hibernating I press power button again and it comes out of hibernation without any odd messages or problems described above... so apparently that is my TEMP fix. Another recent issue I noticed is on occasion when creating a new folder or modifying something in the system variables, other random areas I will get a message: "The Stub received bad data" and simply retry the task and it works. Perhaps these two issues are linked.

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  • Understanding mail failure notices, 554

    - by goran
    I'd like to confirm the meaining of a mail failure notice. Here's the message Hi. This is the qmail-send program at mydomain.com I'm afraid I wasn't able to deliver your message to the following addresses. This is a permanent error; I've given up. Sorry it didn't work out. <[email protected]>: 1.2.3.4 does not like recipient. Remote host said: 554 <[email protected]>: Relay access denied Giving up on 1.2.3.4 The way I understand this is, that 1.2.3.4 is not setup to receive mail for this domain. dig domain.com MX shows ;; ANSWER SECTION: domain.com. 6245 IN MX 10 mail.domain.com. domain.com. 6245 IN MX 20 mx.anotherdomain.com. (1.2.3.4 is mx.anotherdomain.com.). The puzzling part is that I have reports that messages sent from gmail get delivered to this address. P.S. Is this a proper question for serverfault?

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