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  • How does 2D Game Physics work? [closed]

    - by StefanE
    Possible Duplicate: How do I build a 2D physics engine? If we take the game Angry Birds that had big success lately I were thinking how do they implement the physics in a game like that? Your are shooting of your birds and they hit something that will fall off and in turn creating a chain reaction of things either falling or exploding.. Are all this happening with calculations with rules considering all collisions together with gravity etc.?

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  • Webmaster Tools - URL Parameters Settings Do Not Work

    - by David
    Google Webmaster Tools shows problems with duplicate title tags under Optimization - HTML Improvements, for example: ???????? Mitsubishi Electric Mr. Slim PC Series PC-3KAKLT (220V) 30000 BTU > /????-????/mitsubishi-mr-slim-pc3kaklt-30000-btu.html > /????-????/mitsubishi-mr-slim-pc3kaklt-30000-btu.html?category_id=96 These two pages have exactly the same content, a rel-canonical tag is set, and they are (no longer) linked to internally. Additionally, we used the Configuration - URL Parameters setting, to set this parameter to No: Doesn't affect page content about one month ago. However, Google is still showing these HTML improvements (and rankings dropped dramatically). What else can we do here? Best, David

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  • "Never hide" Unity launcher via CCSM & gconf doesn't work

    - by Jim Holman
    All: I am running Unity 3D and I want to set my launcher to never hide. I first ran ccsm, and set "Hide Launcher" to "Never". I rebooted then logged back in and it was still auto-hiding. I then ran gconf-editor, I navigated to /apps/compiz-1/plugins/unityshell/screen0/options and then set launcher_hide_mode to 0. I again rebooted and logged back in. The launcher is still auto-hiding. Checking gconf-editor, launcher_hide_mode is set to 0, but this setting isn't active however. What can I do to get the launcher to Never hide? Thanks, Jim

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  • Fast Remote PHP Technique To Detect Image 404

    - by Volomike
    What PHP script technique runs the fastest in detecting if a remote image does not exist before I include the image? I mean, I don't want to download all the bytes of the remote image -- just enough to detect if it exists. And while on the subject but with just a slight deviation, I'd like to download just enough bytes to determine a JPEG's width and height information. Speed is very important in my concern here on this system design I'm working on.

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  • Ubuntu 12.04 64 bit doesn't work on a win7 with check point full disk encryption

    - by Victor Rodriguez
    I installed Ubuntu 12.04 64 bit with the Wubi installer on a Windows 7 with Check Point Full Disk Encryption. The Wubi Installer runs without any trouble selecting the compatibility mode with WinXP and as Administrator. The problem is that after the installation is complete and the reboot done, when you restart the system, there's no option to start Ubuntu instead of Windows. I recently installed Ubuntu on other Win7 machines without any problem. But those laptops don't have the Check Point Full Disk Encryption. And when you restart the system you have the option to start in Ubuntu. If somebody has resolved this issue please share...!!! Regards! Víctor

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  • Apache virtual host does not work properly

    - by Jori
    I have read a lot of information all over the Internet regarding this subject, and can not figure out what I'am doing wrong. I'm trying to host two websites under different names locally under Windows 7 with Apaches Virtual Hosting functionality. This is what I have done already: In the httpd.conf file I uncommented the following line, so that the virtual host configuration file will be included in the main configuration sequence. # Virtual hosts Include conf/extra/httpd-vhosts.conf This is how I edited my httpd-vhosts.conf: # # Virtual Hosts # # If you want to maintain multiple domains/hostnames on your # machine you can setup VirtualHost containers for them. Most configurations # use only name-based virtual hosts so the server doesn't need to worry about # IP addresses. This is indicated by the asterisks in the directives below. # # Please see the documentation at # <URL:http://httpd.apache.org/docs/2.2/vhosts/> # for further details before you try to setup virtual hosts. # # You may use the command line option '-S' to verify your virtual host # configuration. # # Use name-based virtual hosting. # NameVirtualHost *:80 # # VirtualHost example: # Almost any Apache directive may go into a VirtualHost container. # The first VirtualHost section is used for all requests that do not # match a ServerName or ServerAlias in any <VirtualHost> block. # #<VirtualHost *:80> # ServerAdmin [email protected] # DocumentRoot "C:/apache/docs/dummy-host.localhost" # ServerName dummy-host.localhost # ServerAlias www.dummy-host.localhost # ErrorLog "logs/dummy-host.localhost-error.log" # CustomLog "logs/dummy-host.localhost-access.log" common #</VirtualHost> # #<VirtualHost *:80> # ServerAdmin [email protected] # DocumentRoot "C:/apache/docs/dummy-host2.localhost" # ServerName dummy-host2.localhost # ErrorLog "logs/dummy-host2.localhost-error.log" # CustomLog "logs/dummy-host2.localhost-access.log" common #</VirtualHost> <VirtualHost *:80> ServerName arterieur DocumentRoot "J:/webcontent/www20" <Directory "J:/webcontent/www20"> Order allow,deny Allow from all </Directory> </VirtualHost> As you can see I commented the Virtual Host examples out and added my own one (I did one for this example). Also am I sure that J:\webcontent\www20 exists. At last I edited the Windows host file located in: C:\Windows\System32\drivers\etc\hosts, now it looks this: # Copyright (c) 1993-2009 Microsoft Corp. # # This is a sample HOSTS file used by Microsoft TCP/IP for Windows. # # This file contains the mappings of IP addresses to host names. Each # entry should be kept on an individual line. The IP address should # be placed in the first column followed by the corresponding host name. # The IP address and the host name should be separated by at least one # space. # # Additionally, comments (such as these) may be inserted on individual # lines or following the machine name denoted by a '#' symbol. # # For example: # # 102.54.94.97 rhino.acme.com # source server # 38.25.63.10 x.acme.com # x client host # localhost name resolution is handled within DNS itself. # 127.0.0.1 localhost # ::1 localhost 127.0.0.1 arterieur Then I restarted Apache with the Apache Service Monitor, and it gave me the following fatal error: The requested operation has failed!, I tried to look at the apache/logs/error.log file but I did not log anything, I guess it only logs the errors after startup. Does anyone knows what I'am doing wrong?

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  • Error pushing to remote with git

    - by pcm2a
    I have a fresh Centos 6 server stood up and I have installed git version 1.7.1 through yum. I am using the smart http method through apache for access. When I try to push to the remote server this is what I get: $ git push origin master Password: Counting objects: 6, done. Compressing objects: 100% (3/3), done. Writing objects: 100% (6/6), 436 bytes, done. Total 6 (delta 0), reused 0 (delta 0) error: unpack failed: index-pack abnormal exit I have tried these things which made no difference: chown -R apache:apache /path/to/git/repository (httpd runs as apache) chown -R apache:users /path/to/git/repository chmod -R 777 /path/to/git/repository (obviously not secure but wanted to eliminate this being a file permission problem) What can I try to get pushing to work?

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  • Getting office 2007 to work through wine - with Hebrew

    - by Tal Galili
    I tried to have office 2007 installed using playonlinux. It went well, except that when I try to change my keyboard to Hebrew and start writing - the software immediately crashes. I checked it with powerpoint, were it doesn't crash but any Hebrew text is changed into "[][][][]" signs. How might I resolve this? Thanks. Update: I was able to get the program to stop crashing by running "export LANG=he_IL.UTF-8 " However, now the text in hebrew is upside down. (e.g: ???? ?? will look like ??????)

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  • Netscreen-Remote Equivalent On Linux

    - by mojah
    We're running a simple Juniper VPN tunnel (using Juniper SSG5's) for outside-network access, which works great for Windows PCs since they can connect using the supplied Netscreen-Remote VPN client. Has anyone successfully managed to get this working under Linux? There are several alternatives, but none seem to actually work. The following were tried, but failed: - http://www.prolixium.com/netscreenlinux - http://david.dw-perspective.org.uk/Juniper-Networks-SSL-VPN-Client-On-Linux.html The official version is no Linux Client will ever be developed by Juniper themselves, but perhaps other (open) software exists that has been found compatible to Juniper's VPN?

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  • Merge only a one remote branch into a local branch with Mercurial

    - by Pepijn
    I wan to manage some profiles as XML files in Mercurial repos. The setup I'm thinking of: Each user has a repo with a branch where he manages his own profile, and a number of branches where he can pull and merge other profiles from that branch of another user. So for example I have my own profile branch and a branch labeled friends, in which I want to pull the profile branches of a few remote repos, to collect like a collection of profiles. I figured out that since the repos are unrelated I need to use -f, but I can't figure out how to pull and merge only a single branch into another. So I want like me friend someone profile ---> friends <--- profile \-> family friends <--- profile Is this even possible? Should I use separate repos instead? Is there a better solution?

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  • How to Work with the Network from the Linux Terminal: 11 Commands You Need to Know

    - by Chris Hoffman
    Whether you want to download files, diagnose network problems, manage your network interfaces, or view network statistics, there’s a terminal command for that. This collection contains the tried and true tools and a few newer commands. You can do most of this from a graphical desktop, although even Linux users that rarely use the terminal often launch one to use ping and other network diagnostic tools. Make Your Own Windows 8 Start Button with Zero Memory Usage Reader Request: How To Repair Blurry Photos HTG Explains: What Can You Find in an Email Header?

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  • Google indexing wrong domain that does not work

    - by user174117
    Can anyone tell me why Google indexes a site http://0.3c.7aae.static.theplanet.com instead of the actual domain name (my domain was registered with webmaster tools). The aforementioned link was linking to my site, but has now become a broken link. Initially I tried 301 directs, but nothing worked. The hosting company cannot explain why. Leaving me wondering what to do? Any guidance would be appreciated. Thks

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  • LiveCD does not work on my desktop

    - by Boris
    I've installed Oneiric on my laptop without any issue using the LiveCD downloaded here (from the French Ubuntu community server). But on my desktop, weird things happen: During the 1st try booting with the LiveCD on my desktop, my 2 year old child just hit the keyboard, and after several error messages the desktop loaded and I've been able to test Oneiric. But I wanted to redo a boot before installing Oneiric to avoid mistakes. So during the 2nd time I tried to boot with the LiveCD, I couldn't access to the point where I can choose to test or install. Before trying a 3rd time, I've "cleaned the system" from System Parameter System. But after that I'm still not able to access to the point where I can choose to test or install. Now it stops all the time on a black screen. I do not understand why several boot attempts with same CD have several results. So I wonder if the state of my current installation 11.04 can affect re-booting with my CD 11.10 ?

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  • PDF thumbnails don't work

    - by Sergey
    For a reason I don't know my ubuntu doesn't show thumbnails for pdf. in gconf-editor -- /desktop/gnome/thumbnailers: application@pdf/command = "evince-thumbnailer -s %s %u %o" application@pdf/enable = "True" from console evince-thumbnailer file.pdf out.png works perfectly What can be wrong?? when I installed gnome3 thumbnails worked but everything else didnt. when returned to gnome2.3 - no thumbnails.

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  • Hyper-V Manager right clicking on remote VM causes MMC error

    - by Greg Bray
    I have a Windows 2008 R2 Enterprise Server with SP1 that I log into and use to manage virtual machines running on multiple HyperV servers on our domain. Sometimes when I right click on a remote VM the HyperV Manager will crash and display the following error message: If I use the Actions menu on the lower right it works just fine, but for some reason right clicking cause MMC to stop working. Is there any way to fix this issue? Here are the full details of the error message. Description: Stopped working Problem signature: Problem Event Name: CLR20r3 Problem Signature 01: mmc.exe Problem Signature 02: 6.1.7600.16385 Problem Signature 03: 4a5bc808 Problem Signature 04: Microsoft.Virtualization.Client Problem Signature 05: 6.1.0.0 Problem Signature 06: 4ce7c9e3 Problem Signature 07: 342 Problem Signature 08: 1f Problem Signature 09: System.OverflowException OS Version: 6.1.7601.2.1.0.274.10 Locale ID: 1033 Read our privacy statement online: http://go.microsoft.com/fwlink/?linkid=104288&clcid=0x0409 If the online privacy statement is not available, please read our privacy statement offline: C:\Windows\system32\en-US\erofflps.txt

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  • I can't get click and drag to work with my Wacom Bamboo P&T

    - by Magnus Hoff
    I get my Wacom Bamboo Pen & Touch apparently working (By using Martin Owens' PPA), but whenever I try to click and drag something -- for example to move a window -- it will only register as a click. In other words: The "button up" event is generated right after the "button down" event no matter how long I hold it in. This is the same whether I use the tip of the pen, the buttons on the pen or the buttons on the pad. However: Clicking and dragging works perfectly in the login-screen, both before logging in for the first time and after logging out.

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  • Tkinter on Ubuntu 14.04 seems not to work

    - by empedokles
    I receive following Traceback: Traceback (most recent call last): File "tkinter_basic_frame.py", line 4, in <module> from Tkinter import Tk, Frame, BOTH File "/usr/lib/python2.7/lib-tk/Tkinter.py", line 42, in raise ImportError, str(msg) + ', please install the python-tk package' ImportError: No module named _tkinter, please install the python-tk package This is the demoscript I'm trying to run: #!/usr/bin/python # -*- coding: utf-8 -*- from Tkinter import Tk, Frame, BOTH class Example(Frame): def __init__(self, parent): Frame.__init__(self, parent, background="white") self.parent = parent self.initUI() def initUI(self): self.parent.title("Simple") self.pack(fill=BOTH, expand=1) def main(): root = Tk() root.geometry("250x150+300+300") app = Example(root) root.mainloop() if __name__ == '__main__': main() From my knowledge Tkinter should be included in Python 2.7. Why do I receive the traceback? Doesn't ubuntu contain the standard-python-distribution? This is solved. I had to install it manually in synaptic (got the hint in the meantime from another forum), see here: Wikipedia says: "Tkinter is a Python binding to the Tk GUI toolkit. It is the standard Python interface to the Tk GUI toolkit1 and is Python's de facto standard GUI,2 and is included with the standard Windows and Mac OS X install of Python." - Not good, that it isn't included in Ubuntu as well. Tkinter on Wikipedia

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  • Getting PHP to work with apache to run .php files through browser [closed]

    - by Kevin Duke
    I have VPS running Debian 5.0 (I think) and I would like to get it to run PHP files. I was told it needed to be configured with Apache. I tried entering the command apt-get install apache2 php5 libapache2-mod-php5. But there was no change. Console output: http://pastebin.com/sVMWq6mA This is everything in my /etc/apache2/mods-enabled: http://img35.imageshack.us/img35/6474/modsb.jpg My webserver can be accessed here: http://206.217.223.136/test/ In my test.php file I have the code : <?php phpinfo(); ?> but instead of displaying the page, it tries to download it. How can I fix this?

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  • Remote installation and configuration software, preferrably open source

    - by Brimstedt
    Hello, Im looking for some remote-installation software. I've looked briefly at unattended, opsi and a bunch of stuff, but there is nowhere near enough time to evaluate them all, and they are rather complex to setup so some insight would be very appreciated. This is foremost for windows clients, but linux support would be good. Something like apt-get would've been great. Requirements: Simple to setup and use Set up groups of users (developers, management, sales, etc) Chose which software to be installed for different groups Add new software to groups and it will be automatically installed on client Dependencies between software Nice-to-have: Linux client support OS-unattended installation thanks in advance

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  • How does key-based caching work?

    - by Dominic Santos
    I recently read an article on the 37Signals blog and I'm left wondering how it is that they get the cache key. It's all well and good having a cache key that includes the object's timestamp (this means that when you update the object the cache will be invalidated); but how do you then use the cache key in a template without causing a DB hit for the very object that you are trying to fetch from the cache. Specifically, how does this affect One to Many relations where you are rendering a Post's Comments for example. Example in Django: {% for comment in post.comments.all %} {% cache comment.pk comment.modified %} <p>{{ post.body }}</p> {% endcache %} {% endfor %} Is caching in Rails different to just requests to memcached for example (I know that they convert your cache key to something different). Do they also cache the cache key?

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  • Lenovo G580 video driver does not work

    - by Evgeniy
    I have trouble with video driver. In my laptop, I have 2 video cards: GeForce 630M and Intel HD 4000 Series. I installed 12.04, it starts in Unity 2D mode, I try to install drivers to both video cards, but results inefficiencies. Nvidia control panel propose me to create xorg config file manually, but after this screen resolution resets to 640x480 and I can't get it back to normal mode. Please, help me if this is possible.

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  • Flash animations doesn't work

    - by sosen
    I have a following problem: I have Ubuntu 12.04 installed on my Athlon 1800+ + 1 GB RAM + Nvidia Geforce4 MMX 440 (pretty old configuration) and everything works just fine except Flash Player in my Web browser (tried Firefox and Chromium). Instead of movie/animation, I get blank space. I updated my system via update manager, checked the plugins (everything OK), installed and updated flash player one more time, installed Ubuntu restricted extras, tried Firefox's Flash Aid, even tried Youtube Html 5 (still the same result)... Please, help me! I enjoy working with Linux and Ubuntu is the first that works for me well (after Open Suse and Fedora) but I have no idea what is wrong now...

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  • Lenovo X220 right click does not work with ubuntu 12.04

    - by fulop
    I am unable to right click with my new X220 Lenovo sub-notebook. I have read several workaround but even not know which one would help me. Can someone help me to find the solution or workaround? dpkg-buildpackage: export CFLAGS from dpkg-buildflags (origin: vendor): -g -O2 -fstack-protector --param=ssp-buffer-size=4 -Wformat -Wformat-security dpkg-buildpackage: export CPPFLAGS from dpkg-buildflags (origin: vendor): -D_FORTIFY_SOURCE=2 dpkg-buildpackage: export CXXFLAGS from dpkg-buildflags (origin: vendor): -g -O2 -fstack-protector --param=ssp-buffer-size=4 -Wformat -Wformat-security dpkg-buildpackage: export FFLAGS from dpkg-buildflags (origin: vendor): -g -O2 dpkg-buildpackage: export LDFLAGS from dpkg-buildflags (origin: vendor): -Wl,-Bsymbolic-functions -Wl,-z,relro dpkg-buildpackage: source package xserver-xorg-input-synaptics dpkg-buildpackage: source version 1.6.2-1ubuntu1~precise2 dpkg-buildpackage: source changed by Timo Aaltonen <[email protected]> dpkg-buildpackage: host architecture amd64 dpkg-source --before-build xserver-xorg-input-synaptics-1.6.2 fakeroot debian/rules clean dh clean --with quilt,autoreconf,xsf --builddirectory=build/ dh_testdir -O--builddirectory=build/ dh_auto_clean -O--builddirectory=build/ dh_quilt_unpatch -O--builddirectory=build/ Removing patch 131_reset-num_active_touches-on-deviceoff.patch Restoring src/synaptics.c Removing patch 130_dont_enable_rightbutton_area.patch Restoring conf/50-synaptics.conf Removing patch 129_disable_three_touch_tap.patch Restoring src/synaptics.c Removing patch 128_disable_three_click_action.patch Restoring src/synaptics.c Removing patch 126_ubuntu_xi22.patch Restoring configure.ac Removing patch 125_option_rec_revert.patch Restoring test/fake-symbols.h Restoring test/fake-symbols.c Removing patch 124_syndaemon_events.patch Restoring tools/syndaemon.c Removing patch 118_quell_error_msg.patch Restoring tools/synclient.c Restoring tools/syndaemon.c Removing patch 115_evdev_only.patch Restoring conf/50-synaptics.conf Removing patch 106_always_enable_vert_edge_scroll.patch Restoring src/synaptics.c Removing patch 104_always_enable_tapping.patch Restoring src/synaptics.c Removing patch 103_enable_cornertapping.patch Restoring src/synaptics.c Removing patch 101_resolution_detect_option.patch Restoring include/synaptics-properties.h Restoring man/synaptics.man Restoring src/synapticsstr.h Restoring src/properties.c Restoring src/synaptics.c Restoring tools/synclient.c Removing patch 02-do-not-use-synaptics-for-keyboards.patch Restoring conf/11-x11-synaptics.fdi No patches applied dh_autoreconf_clean -O--builddirectory=build/ dh_clean -O--builddirectory=build/ dpkg-source -b xserver-xorg-input-synaptics-1.6.2 dpkg-source: warning: no source format specified in debian/source/format, see dpkg-source(1) dpkg-source: info: using source format `1.0' dpkg-source: info: building xserver-xorg-input-synaptics using existing xserver-xorg-input-synaptics_1.6.2.orig.tar.gz dpkg-source: info: building xserver-xorg-input-synaptics in xserver-xorg-input-synaptics_1.6.2-1ubuntu1~precise2.diff.gz dpkg-source: warning: the diff modifies the following upstream files: autogen.sh docs/README.alps docs/tapndrag.dia docs/trouble-shooting.txt dpkg-source: info: use the '3.0 (quilt)' format to have separate and documented changes to upstream files, see dpkg-source(1) dpkg-source: info: building xserver-xorg-input-synaptics in xserver-xorg-input-synaptics_1.6.2-1ubuntu1~precise2.dsc debian/rules build dh build --with quilt,autoreconf,xsf --builddirectory=build/ dh_testdir -O--builddirectory=build/ dh_quilt_patch -O--builddirectory=build/ Applying patch 02-do-not-use-synaptics-for-keyboards.patch patching file conf/11-x11-synaptics.fdi Hunk #1 succeeded at 9 (offset 7 lines). Applying patch 101_resolution_detect_option.patch patching file include/synaptics-properties.h patching file man/synaptics.man patching file src/properties.c Hunk #3 succeeded at 787 (offset 6 lines). patching file src/synaptics.c Hunk #2 succeeded at 1403 (offset 3 lines). Hunk #3 succeeded at 1421 (offset 3 lines). patching file src/synapticsstr.h patching file tools/synclient.c Applying patch 103_enable_cornertapping.patch patching file src/synaptics.c Hunk #1 succeeded at 762 with fuzz 1 (offset 202 lines). Applying patch 104_always_enable_tapping.patch patching file src/synaptics.c Hunk #1 succeeded at 662 with fuzz 2 (offset 6 lines). Applying patch 106_always_enable_vert_edge_scroll.patch patching file src/synaptics.c Hunk #1 succeeded at 673 (offset 174 lines). Applying patch 115_evdev_only.patch patching file conf/50-synaptics.conf Hunk #1 succeeded at 14 with fuzz 2. Applying patch 118_quell_error_msg.patch patching file tools/synclient.c patching file tools/syndaemon.c Applying patch 124_syndaemon_events.patch patching file tools/syndaemon.c Applying patch 125_option_rec_revert.patch patching file test/fake-symbols.c patching file test/fake-symbols.h Applying patch 126_ubuntu_xi22.patch patching file configure.ac Applying patch 128_disable_three_click_action.patch patching file src/synaptics.c Hunk #1 succeeded at 671 (offset 174 lines). Applying patch 129_disable_three_touch_tap.patch patching file src/synaptics.c Hunk #1 succeeded at 665 (offset 32 lines). Applying patch 130_dont_enable_rightbutton_area.patch patching file conf/50-synaptics.conf Applying patch 131_reset-num_active_touches-on-deviceoff.patch patching file src/synaptics.c Applying patch 201-wait.patch patching file src/eventcomm.c Hunk #1 FAILED at 750. Hunk #2 FAILED at 775. Hunk #3 FAILED at 784. 3 out of 3 hunks FAILED -- rejects in file src/eventcomm.c Patch 201-wait.patch does not apply (enforce with -f) dh_quilt_patch: quilt --quiltrc /dev/null push -a || test $? = 2 returned exit code 1 make: *** [build] Error 25 dpkg-buildpackage: error: debian/rules build gave error exit status 2

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  • Fedora 17 - Can't access remote machine using hostname

    - by Aaron
    I am using Fedora 17 and am trying to access a remote machine (running Fedora 15) using its hostname which isn't working. The machine is right next to me on the same switch as my machine (so they are both on the same network with the same subnet and everything). When I was running Windows (7 32-bit) on my machine I could access the other machine no problem but now that I am running Fedora 17 that's not the case. Is there an additional daemon or something that I need to be using in order for this to work?

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  • How does a website like Mathway work?

    - by Bob
    I recently found a website called Mathway Basically, it works by allowing you to choose your "level of math" (which it uses to determine what tools it should provide to you) and then allows you to input a math problem which it then solves for you, and gives you detailed solutions (you have to try it, it's really cool). I was wondering how it worked on two levels. First off, how would they parse the math problem (and all the sometimes foreign mathematical operators)? How do they get from text to numbers, variables, and operators? Second, how do they generate the explanations? While you have to pay for the detailed solutions (which are explanations of how they solved the problem), I've seen their preview screenshots, and it looks very detailed. The explanations are given in full, accurate sentences. How would they generate something like that?

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