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• When failure is a feature

  Warning: this post is going to be slightly off-topic and non-technical. Well, not computer science technical at least. I was reading an article in SciAm this morning about the possibility of a robot uprising. Dont laugh yet, this is a very real, if still quite remote possibility. The main idea that was described was that AI could rise one day to self-awareness and to an ability to improve itself through self-replication beyond human abilities to control it. Sure, thats one possibility, and some...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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• Graphical Mode breaks after suspend/ returning from Console

  - by Jack G

  When I try to go to a virtual console (ctrl alt f1) and return to f7, my screen freaks out. Its black with frequent white 'lightning bolts' flashing across the screen. Nothing works, but to force shutdown. Same when trying to resume from suspend. This doesnt happen every time, but very often. I dont know what information might be useful but: Ubuntu 12.10 ATI RS880M [Mobility Radeon HD 4200 Series] Gallium 0.4 on AMD RS880 this line in xsession-errors might be pertinent: (gnome-settings-daemon:1825): color-plugin-WARNING **: Done switch to new account, reload devices p.s. Ive tried the fglrx drivers but need the legacy drivers as described here, but nothing past a black screen.

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• How to connect Empathy to facebook

  - by Simanta Das

  I am a new user of Ubuntu and I want to connect empathy internet messaging with Facebook. So when I select Facebook from the list given in Online Accounts a window opens up for me to authorize access and a url opens saying: Success SECURITY WARNING: Please treat the URL above as you would your password and do not share it with anyone. Although after this nothing happens... When I open the messenger nothing comes up and in Online Accounts it still asks: Please authorize Ubuntu to access your Facebook account... but I have already given permission... Please help me out. Thanks in advance.

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• How do I set the root password so I can use su instead of sudo?

  - by Zignd

  Warning: Directly logging in as root is like playing with fire, because one little typo is enough to lose critical data or make your system unbootable. Note that desktop environments will also function incorrectly if you login to them as root. See these questions for the reasons behind why sudo is preferred and why root-login is disabled by default: What are the benefits of sudo over su? Why is there no option to login as root? Instead of letting you set a password for root during install Ubuntu set it to * for no password and disables the actual account login, however even with this being said you can still use root in ubuntu by sudo. So how to set a root password on Ubuntu?

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• Are Modern Computers Still Vulnerable to Damage via Magnets?

  - by Jason Fitzpatrick

  It’s such an oft repeated warning that it’s firmly embedded in nerd lore: bring a magnet anywhere near your precious computer and suffer the dire consequences. But is true? Is your computer one run in with a novelty magnet away from digital death? Today’s Question & Answer session comes to us courtesy of SuperUser—a subdivision of Stack Exchange, a community-drive grouping of Q&A web sites. How To Create a Customized Windows 7 Installation Disc With Integrated Updates How to Get Pro Features in Windows Home Versions with Third Party Tools HTG Explains: Is ReadyBoost Worth Using?

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• Different behavior when launched from terminal instead of Unity launcher

  - by dgkontopoulos

  I have written two Perl/Gtk programs. When launched from the dash menu, they run just fine. However, if I try to launch them from terminal using the very same command found in their .desktop files, their Unity launcher will be blurry and will remain inactive when clicked, if I keep it in the Unity bar. The problem is solved if the Exec part of the desktop file is replaced with perl path_to_script However, that leads to other problems, including a lintian warning and forcing all Perl GUI applications running from terminal to adopt the same launcher. This issue is quite annoying since one of the programs relies on a different (Python) program in order to be launched and this results in having a blurry and inactive launcher.

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• Wireless doesn't connect in Ubuntu 10.04 Lxde

  - by David

  Problem I have a Dell mini 9, and the wireless has worked without trouble in Ubuntu and Xubuntu versions 8.04 and 10.04. However, after installing lxde, the wireless doesnt connect. Network manager recognizes the local networks, and will say that it is connected, but ifconfig does not confirm the connection or the existance of a wlan0. I have another Ubuntu 10.04 notebook that works fine. My wireless device is Broadcom BCM4312 802.11b/g What I have tried I have tried to remove and install network-mananager and inxi but neither work, and sudo modprobe wl returns WARNING: All config files need .conf: /etc/modprobe.d/blacklist, it will be ignored in a future release.

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• Adobe AIR install problem, Ubuntu x64 14.04

  - by Den Rimus

  Haven't seen this kind of error on askubuntu yet. Did everything as it says here: How can I install Adobe AIR? After sudo ./AdobeAIRInstaller.bin shows this image: dropbox.com/s/wg6cv03h5n1tqgr/adobe_air.png Meanwhile terminal shows a bunch of such messages: (setup:2579): Gtk-WARNING **: Unable to locate theme engine in module_path: "murrine", Nothing is installed. Those murrine - it showed another code before ( another than setup:2579) - I googled it, installed something, it showed another code - I googled it, installed something, etc. Doesn't seem to affect installation anyhow.

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• GNOME Desktop fonts problem debacle

  - by Diogenes Lantern

  I didn't get an answer but I wasn't doing anything and this is an interesting topic. In Ubuntu 12.04, opening a file in gedit or I am working on the command line, in dpkg, I get returned the error "locale not supported, falling back to default "C" libraries", and the one below, Gtk-WARNING **: Locale not supported by C library. Using the fallback 'C' locale. The locales were not set correctly, and locale LANG and LANGUAGE were the culprits. I picked my way through this. The answer, correct below.

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• Cheese Not Working in Ubuntu 11.10

  - by user34305

  When i launch Cheese, nothing launches nor the green light on may laptop webcam glows. I typed cheese in terminal and i got cheese:2293): Gdk-WARNING **: The program 'cheese' received an X Window System error. This probably reflects a bug in the program. The error was 'BadRequest (invalid request code or no such operation)'. (Details: serial 144 error_code 1 request_code 136 minor_code 19) (Note to programmers: normally, X errors are reported asynchronously; that is, you will receive the error a while after causing it. To debug your program, run it with the --sync command line option to change this behavior. You can then get a meaningful backtrace from your debugger if you break on the gdk_x_error() function.)

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• Could not write bytes: broken pipe - looking for log of removed packages

  - by user288987

  I have a dual boot system with 12.04 and windows 7. Ubuntu worked fine yesterday but this morning upon boot I get subject. Searched the forums and unsuccessful with recovery. I tried sudo gedit /var/log/apt/history.log to see the log of removed packages, but get the following... ** (gedit:976): WARNING **: Command line 'dbus-launch --autolaunch=2d7d18532e9953bc8a2b852e00000007 --binary-syntax --close-stderr' exited with non-zero exit status 1: Autolaunch error: X11 initialization failed.\n Cannot open display: Run 'gedit --help' to see a full list of available command line options. Anyone have any suggestions for a fix? Please let me know if you require any additional information. Thanks! Mark

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• Ubuntu partition won't display on screen

  - by Danny

  I installed ggobi on my MacBook Pro, and it wasn't working right. I looked up some information, and found this site: Gtk Warning: Cannot open display I followed the vague instructions, but I think I just typed export DISPLAY=:0 directly into my terminal (I'm still in my Mac partition at this point). Fast forward a few days, and I try to go into my Ubuntu partition. It only gives me command line options. I remember my reckless input from a few days back, and I'm certain that it is the issue. My problem is that I have no idea how to get my previous display settings back. My Mac partition seems unaffected, but it'd be nice to get back into my Ubuntu partition. My last resort is completely reverting my computer to my most recent backup before I changed it, but if anyone out there knows how to fix this, I'd greatly appreciate it. Thanks in advance.

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• Processing a list of atomic operations, allowing for interruptions

  - by JDB

  I'm looking for a design pattern that addresses the following situation: There exists a list of tasks that must be processed. Tasks may be added at any time. Each task is wholly independent from all other tasks. The order in which tasks are processed has no effect on the overall system or on the tasks themselves. Every task must be processed once and only once. The "main" process which launches the task processors may start and stop without warning. When stopped, the "main" process loses all in-memory data. Obviously this is going to involve some state, but are there any design patterns which discuss where and how to maintain that state? Are there any relevant anti-patterns? Named patterns are especially helpful so that we can discuss this topic with other organizations without having to describe the entire problem domain.

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• How to flag a class as under development in Java

  - by Usavich

  I'm working on a internship project, but I have to leave before I can finish up everything. I have 1 class that is not stable enough for production use. I want to mark/flag this class so that other people will not accidentally use it in production. I have already put the notice in Javadoc, but that doesn't seem enough. Some compiler error or warning would be better. The code is organized like this: [Package] | company.foo.bar.myproject |-- Class1.java |-- Class2.java |-- Class3.java <--(not stable) If there was a single factory class that calls those classes in public methods, I could have set the method to class3 as private. However the API is NOT exposed that way. Users will directly use those class, e.g. new Class1();, but I can't make a top-level class private. What's the best practice to deal with this situation?

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• Update information outdated, "Failed to fetch cdrom"

  - by user285603

  I have a warning triangle on the top of my screen. When I click on it, it says that my update information is outdated. When I type sudo apt-get update && sudo apt-get upgrade into a terminal, I get this message: W: Failed to fetch cdrom://Ubuntu 14.04 LTS _Trusty Tahr_ - Release i386 (20140417)/dists/trusty/main/binary-i386/Packages Please use apt-cdrom to make this CD-ROM recognized by APT. apt-get update cannot be used to add new CD-ROMs W: Failed to fetch cdrom://Ubuntu 14.04 LTS _Trusty Tahr_ - Release i386 (20140417)/dists/trusty/restricted/binary-i386/Packages Please use apt-cdrom to make this CD-ROM recognized by APT. apt-get update cannot be used to add new CD-ROMs E: Some index files failed to download. They have been ignored, or old ones used instead. Any ideas?

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• win rt game project to android [closed]

  - by Inderjeet

  I have develop game on windows for winrt in visual studio using cocos2d-x,i just want to port it to android in c++ in the guidance of http://www.jesusbosch.com/2012/06/how-to-set-up-android-and-win32-cocos2d.html this,but i get error while compilling the code on cygwin that errors are below CYGWIN environment variable option "nodosfilewarning" turns off this warning. Consult the user's guide for more details about POSIX paths: http://cygwin.com/cygwin-ug-net/using.html#using-pathnames ERROR: Your GNUMAKE variable is defined to an invalid name: /usr/bin/make Please fix it to point to a valid make executable (e.g. /usr/bin/make) i have install many times cygwin but did not have get make.exe in folder c:/cygwin/usr/bin how can i overcome from this error Thanks Inderjeet Kumar

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• Massive crash and kernel panic after updates yesterday, what now?

  - by Ghost

  Got 12.04 on an AMD+radeon machine, everything was running fine until last night when the update manager installed new packages, and now the moment I open a browser (firefox, chromium, anything) it crashes instantly. It says warning: at build/buildd/linux-3.5.0/arch/x86/kernel/smp.c:123 native_smp_send_reschedule+0x5b/0x60() Pid: 2432, comm: chrome_dbthread tainted: G D 3.5.0-2generic #2-ubuntu I already tried uninstalling the packages from the update log, didn't solve a thing. Depending of which browser I use I get a different reaction, like a complete freeze instead of a text console crash. Ideas? I really don't know what to do.

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• Error when I compile kernel 3.3.2 in ubuntu 12.04

  - by rock-alternativo

  I thinks is not a bug of ubuntu. This is the output: OBJCOPY arch/x86/boot/vmlinux.bin HOSTCC arch/x86/boot/tools/build BUILD arch/x86/boot/bzImage Setup is 16800 bytes (padded to 16896 bytes). System is 4599 kB CRC f77d64c0 Kernel: arch/x86/boot/bzImage is ready (#1) Building modules, stage 2. MODPOST 3268 modules ERROR: "__modver_version_show" [drivers/staging/rts5139/rts5139.ko] undefined! WARNING: modpost: Found 4 section mismatch(es). To see full details build your kernel with: 'make CONFIG_DEBUG_SECTION_MISMATCH=y' make[1]: *** [__modpost] Error 1 make: *** [modules] Error 2

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• How to build a list from Postfix maillog

  - by dstonek

  I want to build a list from maillog, maillog.x containing something like Date, Sender's email, Recipient's Email and subject of the message filtering output emails and output domain. I've read about importing from spreadsheet program a cvs file. The issue is I have to add field separators in log file. I couldn't find how to customize that. How can I do that, the list and the separator? This is an example of sending mail log Jun 11 15:24:58 host postfix/cleanup[19060]: F41C660D98A0: warning: header Subject: TESTING SUBJECT from unknown[XXX.XXX.XXX.XXX]; [email protected] [email protected] proto=ESMTP helo=<[192.168.1.91] Jun 11 15:25:01 host postfix/smtp[19062]: F41C660D98A0: to=, relay=mx-rl.com[xxx.xxx.xxx.xxx]:25, delay=3.4, delays=0.66/0.01/0.86/1.9, dsn=2.0.0, status=sent (250 <538E30D9000A1DD8 Mail accepted) The list would contain the three bold fields filtering by to = [email protected]

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• attempted WUBI install corrupted Vista

  - by oliver zimmermann

  Tried to install WUBI through Google Chrome on my Vista machine. Got through the usual warning about running new software, selected "continue" and waited for a prompt about where to install WUBI. Never got one...waited about 30 minutes (computer still running fine)...decided to reboot and try again. OOOOOPS. Was not able to reboot Vista. Ouch. When I run a Vista recovery CD it tells me there is an "X:" drive on what used to be my C: drive and it cannot find a Vista install to recover. Anyone seen this ? It is making me very happy... THANKS!!!!!!!!!!!!

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• Adobe Reader (acroread) 64 bit looks bad

  - by andreas-1724

  I installed acroread on Ubuntu 14.04 64-bit with gdebi (also tried dpkg and via repository "deb http://archive.canonical.com/ precise partner"). The result looks bad. For example the open-dialog is out of place, the folder-icons are green and the buttons are not rounded. Actually when I start acroread from the command-line, I get several messages and warnings: Gtk-Message: Failed to load module "overlay-scrollbar" Gtk-Message: Failed to load module "unity-gtk-module" Gtk-WARNING **: Unable to locate theme engine in module_path: "murrine" Gtk-Message: Failed to load module "canberra-gtk-module" I remember, that I had this problem, whenever I used a 64bit-Ubuntu (even Ubuntu 12.04), but not when I used a 32bit-Ubuntu.

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• VS2010 SP1 is now available

  - by TATWORTH

  VS2010 SP1 is now available see: http://www.microsoft.com/downloads/en/details.aspx?FamilyID=75568aa6-8107-475d-948a-ef22627e57a5&displaylang=en http://weblogs.asp.net/jgalloway/archive/2011/03/09/tips-on-installing-visual-studio-2010-sp1.aspx Please note the warning: "Note: Do not install this service pack if you have downloaded and installed the stand-alone ‘Microsoft Windows SDK for Windows 7 and .NET Framework 4 (Windows SDK v7.1)’ and you are using the x64 or IA64 compilers that were included in that download. Please see the related article for more information." There is an ISO image available -- see the first link above.

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• juju: How do I list all the relation variables and debug them interactively?

  - by mfisch

  I'm writing a charm that requires a mysql database, I found from looking at other charms that this (below) is how I get the info about the database: user=`relation-get user` password=`relation-get password` mysqlhost=`relation-get private-address` But I just found that from reading the wordpress charm example, is there a way to show all the relation variables that I can use? Also, while debugging my db-relation-changed script, I wanted to ssh into my host and interactively run those commands, for example relation-get user, but it didn't work. I resorted to having to restart everything and use juju log to print them out. This wasted a lot of time. Is there a way to print out these relations, either from my dev box or from the instance running my charm? (Below is what happens when I tried to interactively run relation-get): ubuntu@mfisch-local-tracks-0:~$ relation-get user usage: relation-get [-h] [-o OUTPUT] [-s SOCKET] [--client-id CLIENT_ID] [--format FORMAT] [--log-file FILE] [--log-level CRITICAL|DEBUG|INFO|ERROR|WARNING] [-r RELATION ID] [settings_name] [unit_name] No JUJU_AGENT_SOCKET/-s option found

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• Check for Instant File Initialization

  - by TiborKaraszi

  Instant File initialization, IFI, is generally a good thing to have. Check out this earlier blog post of mine f you don't know what IFI is and why it is a good thing: blog . The purpose of this blog post is to provide a simple script you can use to check if you have IFI turned on. Note that the script below uses undocumented commands, and might take a while if you have a large errorlog file... USE MASTER ; SET NOCOUNT ON -- *** WARNING: Undocumented commands used in this script !!! *** -- --Exit...(read more)

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• LibreOffice can't open a spreadsheet

  - by dn.usenet

  I have been editing my-file.ods almost daily using LibreOffice. Today it hanged at one point. I had to reboot the laptop. Now the file cannot be edited. When it is opened for editing, a warning is issues: Document file is locked for editing by unknown user. If I open the file for editing despite the stated hiccup and edit it and then try to save it, I am prompted to save it under another name. But I don't want to change the name.

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