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• Mini DisplayPort -> DVI -> VGA ?

  - by ibz

  I have a Mini DisplayPort to DVI adapter which I use to connect my MacBook to a screen that has DVI input. I also have a screen with VGA only input which I want to be able to use, so instead of buying yet another expensive Apple adapter (the Mini DisplayPort to VGA), I just got a cheap DVI to VGA, so I can do Mini DisplayPort - DVI - VGA. It doesn't seem to work though. The screen just says "no connection". Does anyone know if this is actually supposed to work (and my DVI - VGA is just broken), or is this simply not supported and I need to get the expensive Apple Mini DisplayPort to VGA? Thanks!

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• Setting the Timezone with an automated script

  - by Tom

  I'm writing scripts to automate setting up new slicehost installations. In a perfect world, after I started the script, it would just run, with no attention from me. I have succeeded, with one exception. How do I set the timezone, in a permanent (survive reboot) and sane (adjust for standard and daylight savings time, so no just forcing the date) ... manner that doesn't require input from me? Currently, I'm using dpkg-reconfigure tzdata This doesn't seem to have any way to force parameters into it. It demands user input. EDIT: I'm editing here, rather than commenting, since comments don't seem to allow code blocks. Here's the actual code I ended up with, based on Rudedog's comment below. I also noticed that this doesn't update /etc/timezone. I'm not certain who uses that, but in case anybody does, I'm setting that too. TIMEZONE="America/Los_Angeles" echo $TIMEZONE > /etc/timezone cp /usr/share/zoneinfo/${TIMEZONE} /etc/localtime # This sets the time

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• How to replace emacs keybindings with vim keybindings in OS X GUI-level text fields

  - by post meridiem

  I'm fairly fluent with VIM, but find myself having to use GUI programs (in OS X) and their awkward editing modes more and more frequently for my work. I know that OS X lets you use basic emacs keybindings in most textfields (browser window/bar, etc.). I'm wondering if it's possible to switch the emacs keybindings to vim keybindings for those GUI-level input areas. I understand that it might be possible to do that key-by-key in the keyboard layout preference pane. But that approach seems limited, cumbersome, and not very elegant. I'm thinking--and I may well be wrong here--that since OS X already ships with VIM installed, there should be a way to change a preference file deep in the system that maps VIM instead of emacs keybindings to the GUI text/input areas. Does anyone know if this is a) theoretically possible, or if there's something about how OS X maps emacs keybindings to its GUI interface that would make this impossible; and b) how/where that could be done?

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• Restore audio settings - cannot open mixer: No such file or directory

  - by Alfred M.

  The internal speaker of my laptop never functionned under Ubuntu. I tried to follow indication on the web and now the jack audio does not work either. The graphic interface for audio management now displays a 'dummy output' instead of the three possible outputs I used to have (one of them was working for the jack output). In a terminal alsamixer raises an error: cannot open mixer: No such file or directory I did try to remove and reinstall alsa-utils but it did not change anything. This happened after a failed atempt to install alsa-driver-linuxant_1.0.23.1_all.deb from here. My sound card seems to be not recognised anymore. After reboot I have no more the sound icon in menu bar the upper right corner. I think I have removed my sound card driver. Indeed, the command sudo lshw -class multimedia indicated audi device as unclaimed. Any idea how I could revert to a better situation (that is jack support and alsa working)? EDIT: The command lspci -nnk | grep -iEA3 audio gives lspci -nnk | grep -iEA3 audio 00:1b.0 Audio device [0403]: Intel Corporation 82801I (ICH9 Family) HD Audio Controller [8086:293e] (rev 03) Subsystem: ASUSTeK Computer Inc. Device [1043:1893] 00:1c.0 PCI bridge [0604]: Intel Corporation 82801I (ICH9 Family) PCI Express Port 1 [8086:2940] (rev 03)

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• Bluetooth headset A2DP works, HSP/HFP not (no sound/no mic)

  - by Stefan Armbruster

  My Philips SBH9001 headset pairs fine using Ubuntu 12.04. In the audio settings it's properly detected as A2DP device and as HSP/HFP device. Hardware: Thinkpad X230, Ubuntu 12.04 64bit, Kernel 3.6.0-030600rc3-generic (build from Ubuntu mainline repo), Bluetooth device is USB-Id 0a5c:21e6 from Broadcom, Headset is a Philips SBH9001. Note: Kernel 3.6 rc3 is used because of a fix for audio on the dockingstation that is not in any previous branches. Playing audio in A2DP works just fine out of the box, but when switching the headset to HSP/HSP mode there is no sound nor does the microphone work. When connecting the headset, /var/log/syslog shows: Aug 25 21:32:47 x230 bluetoothd[735]: Badly formated or unrecognized command: AT+CSRSF=1,1,1,1,1,7 Aug 25 21:32:49 x230 rtkit-daemon[1879]: Successfully made thread 17091 of process 14713 (n/a) owned by '1000' RT at priority 5. Aug 25 21:32:49 x230 rtkit-daemon[1879]: Supervising 4 threads of 1 processes of 1 users. Aug 25 21:32:50 x230 kernel: [ 4860.627585] input: 00:1E:7C:01:73:E1 as /devices/virtual/input/input17 When switching from A2DP (standard profile) to HSP/HFP: Aug 25 21:34:36 x230 bluetoothd[735]: /org/bluez/735/hci0/dev_00_1E_7C_01_73_E1/fd3: fd(34) ready Aug 25 21:34:36 x230 rtkit-daemon[1879]: Successfully made thread 17309 of process 14713 (n/a) owned by '1000' RT at priority 5. Aug 25 21:34:36 x230 rtkit-daemon[1879]: Supervising 4 threads of 1 processes of 1 users. Aug 25 21:34:41 x230 bluetoothd[735]: Audio connection got disconnected Any hints how to get HSP/HFP working here?

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• How do I get Dreamweaver to deploy syntax highlighting for full script CFC's?

  - by Mel

  Is there a way to get Dreamweaver CS4 to use syntax highlighting when writing full script CFCs? If the document type is .cfc and they syntax is fullscript, there is no syntax highlighting; the code will be in black text... For example, the following block of code will appear without syntax highlighting: component extends="whatever" output="false" { public void foo() { } } While the tag equivalent would be highlighted normally: <cfcomponent extends="whatever" output="false"> <cffunction name="foo" returnType="void" access="public"> </cffunction> </cfcomponent>

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• Mini-DisplayPort to HDMI Adapter Sound Stopped Working

  - by jimdrang

  I have cancelled cable and want to watch the NCAA tournament games on my TV tonight through my 2011 Macbook Pro where I can stream the game in a browser. I have a cheap Mini-DisplayPort to HDMI converter that I have connected to my TV in the past and had no issues with audio or video, the problem is the audio has stopped working since the last time I used it a few months ago and now just keeps playing through the laptop speakers, but the video works fine. Everything with my setup is the same and when I try to force the audio output to the TV in the Audio system settings, my TV is not listed as an output option at all. I have tried various combinations of power cycling, replugging-in both devices and making sure the TV options are set properly to receive audio through HDMI but no luck. Anyone know what the issue could be?

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• external SCSI tape drive DAT 72 problem Solaris 10

  - by Hassan

  Hi all, I have solaris 10 sparc running and working very well but i have problem with external SCSI tape drive DAT 72 problem it seems to me the tape drive is manufactured by SUN microsystems when i ran mt -f /dev/rmt/0 status it reveals the following output bash-3.00# mt -f /dev/rmt/0 status /dev/rmt/0: No such file or directory when i ran ls -l it reveals the following output ls -l /dev/rmt/0 lrwxrwxrwx 1 root root 43 Sep 20 2006 /dev/rmt/0 -> ../../devices/pci@8,600000/scsi@1,1/st@3,0: it seems to me everything is okay SCSI cable is connected properly to Tape device and to server as well the tape has SCSI termination dongle as well and connected properly to Tape device as well any ideas would be a great assist Thanks in advance

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• How Do I make an Acer T230H Touchcreen work on Ubuntu 9.10?

  - by N Rahl

  I've done this so far: sudo nano /etc/udev/rules.d/99-touchscreen.rules And added: SUBSYSTEM=="usb", ATTRS{idVendor}=="0408", ATTRS{idProduct}=="3000", SYMLINK+="usb/quanta_touch" SUBSYSTEM=="input", KERNEL=="event*", ATTRS{idVendor}=="0408", ATTRS{idProduct}=="3000", SYMLINK+="input/quanta_touch" sudo service udev restart then the instructions here: http://ubuntuforums.org/showpost.php?p=8932808&postcount=36 And then added to my xorg conf: Section "InputDevice" Identifier "Acer T230H" Driver "hidtouch" Option "SendCoreEvents" "true" Option "ReportingMode" "Raw" Option "Device" "/dev/usb/quanta_touch" Option "PacketCount" "13" Option "OpcodePressure" "852034" Option "OpcodeX" "65584" Option "OpcodeY" "65585" Option "CalibrationModel" "1" Option "CornerTopLeftX" "0" Option "CornerTopLeftY" "0" Option "CornerTopRightX" "1920" # 1920 for 23" Option "CornerTopRightY" "0" Option "CornerBottomLeftX" "0" Option "CornerBottomLeftY" "1080" # 1080 for 23" Option "CornerBottomRightX" "1920" # 1920 for 23" Option "CornerBottomRightY" "1080" # 1080 for 23" Option "CornerScreenWidth" "1920" # 1920 for 23" Option "CornerScreenHeight" "1080" # 1080 for 23" EndSection Section "ServerLayout" Identifier "Touchscreen" InputDevice "Acer T230H" "SendCoreEvents" EndSection And restarted. And the touchscreen does nothing. Any ideas?

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• How can I improve my error checking and handling?

  - by Google

  Lately I have been struggling to understand what the right amount of checking is and what the proper methods are. I have a few questions regarding this: What is the proper way to check for errors (bad input, bad states, etc)? Is it better to explicitly check for errors, or use functions like asserts which can be optimized out of your final code? I feel like explicitly checking clutters a program with a lot of extra code which shouldn't be executed in most situations anyway-- and not to mention most errors end up with an abort/exit failure. Why clutter a function with explicit checks just to abort? I have looked for asserts versus explicit checking of errors and found little to truly explain when to do either. Most say 'use asserts to check for logic errors and use explicit checks to check for other failures.' This doesn't seem to get us very far though. Would we say this is feasible: Malloc returning null, check explictly API user inserting odd input for functions, use asserts Would this make me any better at error checking? What else can I do? I really want to improve and write better, 'professional' code.

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• Why doesn't lsof show localhost TCP connections in 14.04?

  - by sfussenegger

  I have two servers running 12.04.4 and 14.04.1 respectively. Both have nginx (port 80) and a Java process (port 8080). As expected, the lsof output for the Java process on the 12.04 machine shows a couple of established connections for port 8080 (e.g. TCP 127.0.0.1:8080->127.0.0.1:58067 (ESTABLISHED)) The 14.04 machine however does not. It only shows the listening port (TCP *:8080 (LISTEN)). I'm sure there are active connections though (confirmed by access logs, Java process status output, etc). What has changed from 12.04 to result in this behavior? Can this change be the cause for the "Too many open files" errors I'm getting since moving from 12.04 to 14.04? 12.04: $ dpkg -l lsof linux-image-virtual openjdk-7-jre nginx ||/ Name Version +++-===========================================-=========================================== ii linux-image-virtual 3.2.0.59.70 ii lsof 4.81.dfsg.1-1build1 ii nginx 1.6.1-1~precise ii openjdk-7-jre 7u65-2.5.1-4ubuntu1~0.12.04.1 14.04: $ dpkg -l lsof linux-image-virtual openjdk-7-jre nginx-full ||/ Name Version Architecture Description +++-=====================================-=======================-======================= ii linux-image-virtual 3.13.0.32.38 amd64 ii lsof 4.86+dfsg-1ubuntu2 amd64 ii nginx-full 1.4.6-1ubuntu3 amd64 ii openjdk-7-jre:amd64 7u65-2.5.1-4ubuntu1~0.1 amd64

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• Help to organize game cycle in Java

  - by ASIO22

  I'm pretty new here (as though to a game development). So here's my question. I'm trying to organize a really simple game cycle in my public static main() as follows: Scanner sc = new Scanner(System.in); //Running the game cycle boolean flag=true; while (flag) { int action; System.out.println("Type your action please:"); System.out.println("0: Exit app"); try { action = sc.nextInt(); switch (action) { case 0: flag=false; break; case 1: break; } } catch (InputMismatchException ex) { System.out.println(ex.getClass() + "\n" + "Please type a correct input\n"); //action = sc.nextInt(); continue; } What's wrong with this cycle: I want to catch an exception when user types text instead of number, show a message, warning user, and the continue game cycle, read user input etc. But instead of that, when users types wrong data, it goes into a eternal cycle without even prompting user. What I did wrong?

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• Unit Tests as a learning tool - a good idea?

  - by Ekkehard.Horner

  I'm interested in ways and means for learning (a) programming language(s) efficiently. I believe that using Unit Test concepts and infrastructure early in that process is a good thing, even better than starting with "Hello world". Why: To write a decent program even for a toy/restricted problem in a new language, you'll have to master many heterogenous concepts (control flow & variables & IO ...), you are tempted to glance over details just to get your program 'to work'. Putting (your understanding of) the facts about the new language in assertions with good descriptions (=success messages) enforces thinking thru/clearness/precision. Grouping topics and adding assertions to such groups is much easier than incorporation features from the 2. chapter of your "Learning X" book to your chapter 1 program. Why not: 'Real' Unit Tests are meant to output "1234 tests ok; 1 failure: saveWorld() chokes on negative input"; 'didactic' Unit Tests should output relevant facts about the new language like perl6 10-string.t # ### p5chop ... ok 13 - p5chop( "cbä" ) returns "ä" ok 14 - after that, victim is changed to "cb" # ### (p6) chop ... ok 27 - (p6) chop( "cbä" ) returns chopped copy: "cb" ok 18 - after that, victim is unchanged: "cbä" # ### chomp ... So (mis?)using Unit Tests may be counterproductive - practicing actions while learning you wouldn't use professionally. How: Writing 'didactic' Unit Tests in languages with lightweight testing systems (Perl 5/6) is easy; (mis?)using more elaborate systems (JUnit, CppUnit) may be not worth the effort or not suitable for a person just starting with a new language. So Is using Unit Tests as a learning tool a bad idea? Can the Unit Test tool(s) of your favourite language(s) used didactically? Should implementation details (eventually) be discussed here or over at stackoverflow.com?

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• To display the field values submitted with AJAX [closed]

  - by work

  Here is the code:I want to post the field values entered in this code to the page ajaxpost.php using Ajax and then do some operations there. What would be code required to be written in ajaxpost.php <html> <head> <script type="text/javascript"> function loadXMLDoc() { var xmlhttp; if (window.XMLHttpRequest) {// code for IE7+, Firefox, Chrome, Opera, Safari xmlhttp=new XMLHttpRequest(); } else {// code for IE6, IE5 xmlhttp=new ActiveXObject("Microsoft.XMLHTTP"); } xmlhttp.onreadystatechange=function() { if (xmlhttp.readyState==4 && xmlhttp.status==200) { document.getElementById("myDiv").innerHTML=xmlhttp.responseText; } } var zz=document.f1.dd.value; //alert(zz); var qq= document.f1.cc.value; xmlhttp.open("POST","ajaxpost.php",true); xmlhttp.setRequestHeader("Content-type","application/x-www-form-urlencoded"); xmlhttp.send("dd=zz&cc=qq"); } </script> </head> <body> <h2>AJAX</h2> <form name="f1"> <input type="text" name="dd"> <input type="text" name="cc"> <button type="button" onclick="loadXMLDoc()">Request data</button> <div id="myDiv"></div> </form> </body> </html>

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• Unexpected issues with SessionPageStatePersiste

  - by geekrutherford

  Several iterations ago I implemented the SessionPageStatePersister in an application as a way to cut down on the size of the hidden ViewState input on aspx pages.   At first it seemed utterly fantasic. The size of the ViewState appeared to be drastically reduced and the application did not appear to peform any slower than baseline.   Enter the iFrame &amp; user control. I added a user control which pings the web server every 20 seconds in order to show updated application information to the user (new messages, reports, etc.) After releasing this nifty little control into the QA environment I quickly began receiving emails from testers about "post back" related error messages which mostly centered around invalid ViewState exceptions.   At first I dismissed it as something related to all of the AJAX requests happening on the page and considered turning off page event validation. However, upon further investigation I came across the following article:   Things That You Should Watch Out For When Using SessionPageStatePersister   In this article the author specifically states:   If you application uses frames than each frame request will create a new session view state item and as before it will remove items when reaching the maximum, you come into a situation that one of the frames will probably loose it session view state because other frames did post backs.   Oh snap! That is precisely what I am doing. That combined with multiple users on the application equals dropped ViewStates!   The temporary fix has been to disable the use of the SessionPageStatePersister in my application. This results in a bloated hidden ViewState input, but the web server is no longer tasked with maintaing/retreiving it and the app. no longer loses ViewState information.

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• Links for Getting Started with PowerShell for Office 365 and Exchange Online

  - by Brian Jackett

  This past week I worked with some customers who were getting started with using PowerShell against Exchange Online as part of their new Office 365 solution.  As you may know Exchange is not my primary focus area but since these customers’ needs centered around PowerShell I thought this would be a good opportunity to learn more.  What soon became apparent to me was a few things: The output / objects returned from Exchange Online vs. on-premises commandlets sometimes differ (mainly due to Exchange Online output needing to be serialized across the wire) Some of the community scripts posted on TechNet Script Center or PoSH Code Repository that work for on-premises won’t work against Exchange Online due to the above I went to multiple resources to get an introduction of using the Exchange Online commandlets      In light of the last item I would like to share some resources I gathered for getting started with the Exchange Online commandlets.  I will address the first two items in a follow up post that shows one sample script that I helped a customer fix.   Links Using PowerShell with Office365 http://blah.winsmarts.com/2011-4-Using_PowerShell_with_Office365.aspx   Administering Microsoft Office 365 using WIndows PowerShell http://blog.powershell.no/2011/05/09/administering-microsoft-office-365-using-windows-powershell/   Reference to Available PowerShell Cmdlets in Exchange Online http://help.outlook.com/en-us/140/dd575549.aspx   Windows PowerShell cmdlets for Office 365 http://onlinehelp.microsoft.com/en-us/office365-enterprises/hh125002.aspx   Role Based Access Control in Exchange Online http://help.outlook.com/en-us/140/dd207274.aspx   Exchange Online and RBAC http://blogs.technet.com/b/ilvancri/archive/2011/05/16/exchange-online-office365-and-rbac.aspx   Conclusion    Office 365 is being integrated into more and more customers’ environments.  While your PowerShell skills can still be used to manage certain portions of Office 365 (Exchange Online as of the time of this writing) there are a few differences in how data is passed back and forth.  Hopefully the links above will get you started on scripting against  cloud based services.         -Frog Out

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• Is mocking for unit testing appropriate in this scenario?

  - by Vinoth Kumar

  I have written around 20 methods in Java and all of them call some web services. None of these web services are available yet. To carry on with the server side coding, I hard-coded the results that the web-service is expected to give. Can we unit test these methods? As far as I know, unit testing is mocking the input values and see how the program responds. Are mocking both input and ouput values meaningful? Edit : The answers here suggest I should be writing unit test cases. Now, how can I write it without modifying the existing code ? Consider the following sample code (hypothetical code) : public int getAge() { Service s = locate("ageservice"); // line 1 int age = s.execute(empId); // line 2 return age; // line 3 } Now How do we mock the output ? Right now , I am commenting out 'line 1' and replacing line 2 with int age= 50. Is this right ? Can anyone point me to the right way of doing it ?

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• How do I make time?

  - by SystemNetworks

  I wanted to output a text for a certain amount of time. One way is to use threads. Are there any other ways? I can't use threads for slick2d. This is my code when I use threads for slick: package javagame; import org.newdawn.slick.GameContainer; import org.newdawn.slick.Graphics; import org.newdawn.slick.Image; import java.util.Random; import org.newdawn.slick.Input; import org.newdawn.slick.*; import org.newdawn.slick.state.*; import org.lwjgl.input.Mouse; public class thread1 implements Runnable { String showUp; int timeLeft; public thread1(String s) { s = showUp; } public void run(Graphics g) { try { g.drawString("%s is sleeping %d", 500, 500); Thread.sleep(timeLeft); g.drawString("%s is awake", 600,600); } catch(Exception e) { } } @Override public void run() { // TODO Auto-generated method stub run(); } } It auto generates a new run() And also when I call it to my main class it has stack overflow!

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• Platformer Enemy AI

  - by hayer

  I'm currently developing a platformer shooter. The game is multiplayer and while my net code could use some real work I have put that off for the time, so currently I'm trying to implement the AI. The game is pretty simple; Players run around on a map filled with a X amount of zombies that try to eat their brains, classic and overused I know. Weapons spawn at random intervals around the map. The problem is that the zombies, when they find their pray the have to follow it for some while.. And here is the problem, running the AI navcode seems to take for ever. So here is the ideas I have come up with so far Have the AI update at different intervals with a maximum of Y ms with no updates. Have the zombies assigned to groups of zombies. One is appointed the leader of the group who finds the way to the player - the rest just follows the leader. If the leader dies another one of the zombies in the group is appointed president of the zombie swarm. If there is less than five zombies in a group they try to meet up with other zombies.(Aka they are assigned to a different group and therefor a new leader) Multi-threading option one or two? For navigation I have some kinda navmesh(since the game is not tile-based) that tells the zombies where they can walk etc. If anyone else got some ideas on how to do navigation I would love some input. For LoS(zombie - player) I have split the map into grids. If the players grid is connected to the zombies grid(if I go with option two I would only need to check if leader zombies grid is connected to player, aka less checks) - if they are connected and there is more than 250ms since last check do a raytrace.. This is my first time programming AI so input on any field is appreciated.

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• Is this possible?

  - by PythonNewbie2

  Hello, I'm exploring some technologies and JSP with JSF 2.0 and Primefaces seems really cool. I'm new to all of these, but I'm a fast learner. I wondering if I can create the web app I want withh JSP/JSF/Primefaces or should I be looking to different technologies? If I should, which ones do you recommend? Here's a basic description of the app: Users log in with their username and password (maybe I can somehow incorporate google OPENID)? With a really nice UI, they will be presented a large list of questions specific to a certain category, for example, JSP. When they click on any of these questions, a little input opens up below it to allow the user to put in a link. If the link they enter has the same question on that webpage the URL points to, they will be awarded one point. This question then disappears and gets added to a different page that has a list of all correctly linked questions. On the right side of the screen, there will be a leaderboard with the usernames of the people with the top ten points. Is this possible with JSP/JSF/Primefaces, or should I be looking elsewhere for a different web technology? The idea is relatively simple - to be able to compile links to external websites for specific questions. I know I can build the UI easily with Primefaces. What I'm not sure is if JSP/JSF gives the ability to parse HTML at a certain URL to see if it contains words. I can do this with python easily by using urllib. Any help would be appreciated!!! What would be more helpful than a "Yes" or "No" answer would be links to where I can see sample code of external HTML parsing. Your input is truly appreciated! Thanks!

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• How to revert back to older xorg?

  - by wouter205

  Since the last update of ubuntu 12.04, the system won't boot into gui anymore. It states that it was unable to load the graphics drivers and gives me 4 options, these are: run in low graphics mode for 1 session reconfigure graphics troubleshoot the error exit to console login whichever option I choose, it doesn't solve anything. For instance, when i choose to reconfigure graphics and then switch to vesa drivers, the screen goes back to the option list. So i configured xorg.conf to vesa myself, and i see in the update history that ubuntu updated xserver-xorg-core and xserver-common whereas i blocked these updates in synaptic since i'm aware that updating these files caused troubles with my particular video card (radeon hd6800). So my solution is probably to revert these files to the older (working) versions. How can I do this please (in particular xserver-xorg-core since i think this is the main cause of my problem). thanks! output of ls /etc/X11 -app-defaults xorg.conf Xreset -cursors xorg.conf-backup-120529144709 Xreset.d -default-display-manager xorg.conf.fglrx-0 -Xresources -fonts xorg.conf.fglrx-1 Xsession -rgb.txt xorg.conf.fglrx-2 Xsession.d -X xorg.conf.original-0 -Xsession.options -xinit xorg.conf.original-1 -Xwrapper.config -xkb xorg.conf.vesa Output of sudo aptitude show xserver-xorg-core | grep Versie (read: Version in Flemish) Versie: 2:1.11.4-0ubuntu10.2

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• Server not sending a SYN/ACK packet in response to a SYN packet

  - by jeff

  Using iptraf, tcpdump and wireshark I can see a SYN packet coming in but only the ACK FLAG is set in reply packet. I'm running Debian 5 with kernel 2.6.36 I've turned off window_scaling and tcp_timestamps, tcp_tw_recycle and tcp_tw_reuse: cat /etc/sysctl.conf net.ipv4.tcp_tw_recycle = 0 net.ipv4.tcp_tw_reuse = 0 net.ipv4.tcp_window_scaling = 0 net.ipv4.tcp_timestamps = 0 I've attached an image of the wireshark output. http://imgur.com/pECG0.png Output to netstat netstat -natu | grep '72.23.130.104' tcp 0 0 97.107.134.212:18000 72.23.130.104:42905 SYN_RECV I've been doing everything possible to find a solution and have yet to figure out the problem, so any help/suggestions are much appreciated. UPDATE 1: I've set tcp_syncookies = 0 and noticed I am now replying with 1 SYN+ACK for every 50 SYN requests. The host trying to connect is sending a SYN request about once every second. PCAP FILE

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• DVD RW+ Not showing up

  - by Manywa R.

  I'm running Ubuntu 12.10 on a Toshiba Satellite Pro A120 and my built in DVD Drive is not opening any cd/dvd/dvd rw that am trying to play on them. the drive seems to be mounted and recongnized: Output of sudo lshw: ... *-cdrom description: DVD-RAM writer product: DVD-RAM UJ-841S vendor: MATSHITA physical id: 1 bus info: scsi@1:0.0.0 logical name: /dev/cdrom logical name: /dev/cdrw logical name: /dev/dvd logical name: /dev/dvdrw logical name: /dev/sr0 version: 1.40 capabilities: removable audio cd-r cd-rw dvd dvd-r dvd-ram configuration: ansiversion=5 status=ready *-medium physical id: 0 logical name: /dev/cdrom and the disk seems to start but hang with the dvd drive LED solid amber.... the output of jun@jun-Satellite-Pro-A120:~$ dmesg | grep "sr0" [679396.184901] sr 1:0:0:0: [sr0] Unhandled sense code [679396.184910] sr 1:0:0:0: [sr0] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE [679396.184920] sr 1:0:0:0: [sr0] Sense Key : Hardware Error [current] [679396.184931] sr 1:0:0:0: [sr0] Add. Sense: Id CRC or ECC error [679396.184942] sr 1:0:0:0: [sr0] CDB: Read(10): 28 00 00 00 00 00 00 00 08 00 [679396.184965] end_request: I/O error, dev sr0, sector 0 [679396.184975] Buffer I/O error on device sr0, logical block 0 [679396.184984] Buffer I/O error on device sr0, logical block 1 [679396.184990] Buffer I/O error on device sr0, logical block 2 [679396.184996] Buffer I/O error on device sr0, logical block 3 [679396.185002] Buffer I/O error on device sr0, logical block 4 [679396.185008] Buffer I/O error on device sr0, logical block 5 [679396.185014] Buffer I/O error on device sr0, logical block 6 [679396.185020] Buffer I/O error on device sr0, logical block 7 [679396.185031] Buffer I/O error on device sr0, logical block 8 [679396.185038] Buffer I/O error on device sr0, logical block 9 [679396.185070] sr 1:0:0:0: [sr0] unaligned transfer [679396.185108] sr 1:0:0:0: [sr0] unaligned transfer Can someone help me through this? tired of moving around with an external dvd drive. Thanks

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• Ubuntu 12.04 problem with E160 huawei - can't detect the device nad freezing system

  - by Matt

  i just installed 12.04, plug in E160 and nothing happend - modem doesnt mount. i found this solution : Ubuntu does not mount some Huawei devices due to bugs, problems etc. See if these work: 1st option: Connect the USB modem. After 10 seconds, type this in a terminal window: lsusb The output will be like this: Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 004 Device 004: ID 12d1:140b Huawei Technologies Co., Ltd. Bus 004 Device 002: ID 413c:3016 Dell Computer Corp. Optical 5-Button Wheel Mouse Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 002 Device 005: ID 0b97:7762 O2 Micro, Inc. Oz776 SmartCard Reader Bus 002 Device 004: ID 413c:8103 Dell Computer Corp. Wireless 350 Bluetooth Bus 002 Device 003: ID 0b97:7761 O2 Micro, Inc. Oz776 1.1 Hub Bus 002 Device 002: ID 413c:a005 Dell Computer Corp. Internal 2.0 Hub Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub The device is a Huawei modem, so let's look at the output. The relevant entry is: Bus 004 Device 004: ID 12d1:140b Huawei Technologies Co., Ltd Hence, you must type: sudo modprobe usbserial vendor=0x12d1 product=0x140b 2nd option Download usb-modeswitch and usb-modeswitch-data packages from packages.ubuntu.com. Install them through the command: sudo dpkg -i usb-modeswitch*.deb 3rd option Try a combination of both. but with no result. Modem still is not detected. I've tried to add new conection but system can't see my device in setup dialogue. Also i noticed that when i open eg. terminal and try to type sth, system freeze for a while.. Thx for help!

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• VMware - I/O error - how to fix?

  - by Maya-G

  I'm running XP pro on VMware - it mounts and runs just fine. However, if I power down the VM and try to copy it, or even if I try to do a simple Mac Backup (using Carbon Copy Cloner), I get an i/o error at one very specific VMDK file. Here's a sample of the error - this from CCC: "12/20 22:49:30 Detected input/output error 12/20 22:49:33 rsync: read errors mapping "/Users/blahblah/Documents/Virtual Machines.localized/WindowsXP-Professional150G.vmwarevm/WindowsXP-Professional150G-000001-s065.vmdk": Input/output error (5)" How can I regain my ability to do backups of my Mac without this I/O error?

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