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• Cannot view, use, or open CDs or DVDs in Ubuntu 12.04

  - by user67592

  I am fairly new to Ubuntu 12.04 and I have encountered a rather irritating problem. Whenever I insert a CD or DVD (whether it have data, music, movies, or nothing at all), nothing pops up saying "you have inserted a CD", "play with Rhythmbox?" etc. It doesn't show the CD in the launcher/dock or anything of the sort. This is especially peculiar because not only do I have a standard IDE built-in optical drive, but I have an external USB optical drive. Neither work. In addition, whenever I go to "Computer///" and I click (double click, right click, or even left click) on "CD/DVD Drive" nothing happens, when I right click and select "Open" nothing happens either [for either of the two drives (both are listed in Computer///)] And if I insert a blank disk and go to a disk burning program such as Brasero, and try to burn to the drive it detects no CDs or DVDs of any kind. I'm rather stumped and can't seem to find a question similar to this. :( Thanks for all your help in advance!! :) ~Preston Output of sudo lshw *-cdrom description: DVD-RAM writer product: CD/DVDW TS-H652M vendor: TSSTcorp physical id: 0.0.0 bus info: scsi@5:0.0.0 logical name: /dev/cdrom logical name: /dev/cdrw logical name: /dev/dvd logical name: /dev/dvdrw logical name: /dev/sr0 version: 0414 capabilities: removable audio cd-r cd-rw dvd dvd-r dvd-ram configuration: ansiversion=5 status=nodisc *-cdrom description: DVD reader product: DVD Writer 300n vendor: HP physical id: 0.0.0 bus info: scsi@4:0.0.0 logical name: /dev/cdrom2 logical name: /dev/cdrw2 logical name: /dev/dvd2 logical name: /dev/sr1 version: 1.25 serial: [ capabilities: removable audio cd-r cd-rw dvd configuration: status=nodisc

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• Add Machine Key to machine.config in Load Balancing environment to multiple versions of .net framework

  - by davidb

  I have two web servers behind a F5 load balancer. Each web server has identical applications to the other. There was no issue until the config of the load balancer changed from source address persistence to least connections. Now in some applications I receieve this error Server Error in '/' Application. Validation of viewstate MAC failed. If this application is hosted by a Web Farm or cluster, ensure that configuration specifies the same validationKey and validation algorithm. AutoGenerate cannot be used in a cluster. Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.Web.HttpException: Validation of viewstate MAC failed. If this application is hosted by a Web Farm or cluster, ensure that configuration specifies the same validationKey and validation algorithm. AutoGenerate cannot be used in a cluster. Source Error: The source code that generated this unhandled exception can only be shown when compiled in debug mode. To enable this, please follow one of the below steps, then request the URL: Add a "Debug=true" directive at the top of the file that generated the error. Example: or: 2) Add the following section to the configuration file of your application: Note that this second technique will cause all files within a given application to be compiled in debug mode. The first technique will cause only that particular file to be compiled in debug mode. Important: Running applications in debug mode does incur a memory/performance overhead. You should make sure that an application has debugging disabled before deploying into production scenario. How do I add a machine key to the machine.config file? Do I do it at server level in IIS or at website/application level for each site? Does the validation and decryption keys have to be the same across both web servers or are they different? Should they be different for each machine.config version of .net? I cannot find any documentation of this scenario.

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• Improving Finance Department Productivity at BorgWarner

  Nigel Youell, Product Marketing Director, Enterprise Performance Management Applications at Oracle discusses with Mark Smith, Manager, Financial Reporting Systems at BorgWarner how using Oracle's Enterprise Performance Management System on top of SAP transactional systems at BorgWarner has made significant improvements in the productivity of it finance function and halved the time it takes for to close its books.

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• Server monitoring for medium scale UNIX network

  - by nbartolomeo

  I'm looking for suggestions for a good monitoring tools, or tools, to handle a mixed Linux (RedHat 4-5) and HPUX environment. Currently we are using Hobbit which is working reasonably well but it is becoming harder to keep track of what alerts are sent out for what servers. Features I'd like to see: Easy configuration of servers. The ability to monitor CPU, network, memory, and specific processes I've looked into Nagios but from what I have seen it won't be easy to set up the configuration for all of our servers ~200 and that without installing a plugin into each agent I won't be able to monitor processes.

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• Will default applications be automatically changed during release upgrade?

  - by Jasper Loy

  Suppose LibreOffice and Banshee are set to replace OpenOffice and Rhythmbox in Natty Narwhal. Of course doing a fresh install will give me these new applications to be the default ones. However if I choose to upgrade via the update manager, will the old applications be uninstalled and the new ones installed automatically, or do I have to do these manually so that I get the same experience as a fresh install?

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• Introducing the Native Client SDK

  Introducing the Native Client SDK Henry Bridge, product manager for Native Client introduces the developer preview of Native Client's sdk. For more information go to code.google.com From: GoogleDevelopers Views: 5 0 ratings Time: 05:00 More in Science & Technology

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• Problem Solving vs. Solution Finding

  - by ryanabr

  By enlarge, most developers fall into these two camps I will try to explain what I mean by way of example. A manager gives the developer a task that is communicated like this: “Figure out why control A is not loading on this form”. Now, right there it could be argued that the manager should probably have given better direction and said something more like: “Control A is not loading on the Form, fix it”. They might sound like the same thing to most people, but the first statement will have the developer problem solving the reason why it is failing. The second statement should have the developer looking for the solution to make it work, not focus on why it is broken. In the end, they might be the same thing, but I usually see the first approach take way longer than the second approach. The Problem Solver: The problem solver’s approach to fixing something that is broken is likely to take the error or behavior that is being observed and start to research it using a tool like Google, or any other search engine. 7/10 times this will yield results for the most common of issues. The challenge is in the other 30% of issues that will take the problem solver down the rabbit hole and cause them not to surface for days on end while every avenue is explored for the cause of the problem. In the end, they will probably find the cause of the issue and resolve it, but the cost can be days, or weeks of work. The Solution Finder: The solution finder’s approach to a problem will begin the same way the Problem Solver’s approach will. The difference comes in the more difficult cases. Rather than stick to the pure “This has to work so I am going to work with it until it does” approach, the Solution Finder will look for other ways to get the requirements satisfied that may or may not be using the original approach. For example. there are two area of an application of externally equivalent features, meaning that from a user’s perspective, the behavior is the same. So, say that for whatever reason, area A is now not working, but area B is working. The Problem Solver will dig in to see why area A is broken, where the Solution Finder will investigate to see what is the difference between the two areas and solve the problem by potentially working around it. The other notable difference between the two types of developers described is what point they reach before they re-emerge from their task. The problem solver will likely emerge with a triumphant “I have found the problem” where as the Solution Finder will emerge with the more useful “I have the solution”. Conclusion At the end of the day, users are what drives features in software development. With out users there is no need for software. In todays world of software development with so many tools to use, and generally tight schedules I believe that a work around to a problem that takes 8 hours vs. the more pure solution to the problem that takes 40 hours is a more fruitful approach.

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• ubuntu 12.04 broken

  - by Gaurav

  I installed PPA package for BITdefender but somehow the package got broken. Because of this I was not able to boot Ubuntu in normal mode. So i booted in recovery mode and completely removed the broken package using synaptic package manager. But even after removing the broken package I'm unable to boot in normal mode. Everytime i try to boot in normal mode I'm greeted with a black screen! Is there any way to fix this?

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• What is a 'good number' of exceptions to implement for my library?

  - by Fuzz

  I've always wondered how many different exception classes I should implement and throw for various pieces of my software. My particular development is usually C++/C#/Java related, but I believe this is a question for all languages. I want to understand what is a good number of different exceptions to throw, and what the developer community expect of a good library. The trade-offs I see include: More exception classes can allow very fine grain levels of error handling for API users (prone to user configuration or data errors, or files not being found) More exception classes allows error specific information to be embedded in the exception, rather than just a string message or error code More exception classes can mean more code maintenance More exception classes can mean the API is less approachable to users The scenarios I wish to understand exception usage in include: During 'configuration' stage, which might include loading files or setting parameters During an 'operation' type phase where the library might be running tasks and doing some work, perhaps in another thread Other patterns of error reporting without using exceptions, or less exceptions (as a comparison) might include: Less exceptions, but embedding an error code that can be used as a lookup Returning error codes and flags directly from functions (sometimes not possible from threads) Implemented an event or callback system upon error (avoids stack unwinding) As developers, what do you prefer to see? If there are MANY exceptions, do you bother error handling them separately anyway? Do you have a preference for error handling types depending on the stage of operation?

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• ubuntu 12.04 server doesn't resolve local domain name

  - by jdog

  After apt-get upgrade this morning, my Ubuntu 12.04 web server does no longer resolve a domain name hosted on it. I also received the error message: "resolvconf: Error: /etc/resolv.conf isn't a symlink, not doing anything." I found this question Network Manager not populating resolv.conf but the solutions provided there did not resolve the problem. Creating the symlink in fact caused websites to load very slowly, so I assume there is some sort of (reverse?) DNS lookup not working, when I create the symlink.

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• On Android Compatibility

  [This post is by Dan Morrill, Open Source & Compatibility Program Manager. — Tim Bray] At Google I/O 2010, we announced that there are over 60 Android models...

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• Software Center - Items cannot be installed or removed until package catalog is repaired"

  - by Stephanie

  I tried to install back in time and now I keep getting the message 'items cannot be installed or removed until package catalog is repaired. I have tried sudo apt-get install -f then get Reading package lists... Done Building dependency tree Reading state information... Done Correcting dependencies... Done The following extra packages will be installed: backintime-gnome The following packages will be upgraded: backintime-gnome 1 upgraded, 0 newly installed, 0 to remove and 2 not upgraded. 1 not fully installed or removed. Need to get 0 B/39.4 kB of archives. After this operation, 24.6 kB of additional disk space will be used. Do you want to continue [Y/n]? when I click Y, I get the following message dpkg: dependency problems prevent configuration of backintime-gnome: backintime-gnome depends on backintime-common (= 1.0.7); however: Version of backintime-common on system is 1.0.8-1. dpkg: error processing backintime-gnome (--configure): dependency problems - leaving unconfigured No apport report written because the error message indicates its a followup error from a previous failure. Errors were encountered while processing: backintime-gnome E: Sub-process /usr/bin/dpkg returned an error code (1) stephanie@stephanie-ThinkPad-T61:~$ sudo dpkg --configure -a dpkg: dependency problems prevent configuration of backintime-gnome: backintime-gnome depends on backintime-common (= 1.0.7); however: Version of backintime-common on system is 1.0.8-1. dpkg: error processing backintime-gnome (--configure): dependency problems - leaving unconfigured Errors were encountered while processing: backintime-gnome

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• XAMPP MySQL stops running after ~1.5 seconds

  - by Nona Urbiz

  I have tried installing it as a service. Nothing seems to work! I have checked the status page and MySQL is listed as "Deactivated". When trying to open phpMyAdmin I get: Error MySQL said: Documentation #1045 - Access denied for user 'root'@'localhost' (using password: NO) Connection for controluser as defined in your configuration failed. phpMyAdmin tried to connect to the MySQL server, and the server rejected the connection. You should check the host, username and password in your configuration and make sure that they correspond to the information given by the administrator of the MySQL server. and from the CD demo: Warning: mysql_connect() [function.mysql-connect]: Access denied for user 'root'@'localhost' (using password: NO) in C:\xampp\htdocs\xampp\cds.php on line 77 Could not connect to database! Is MySQL running or did you change the password?        Thanks for any suggestions or help you can give!

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• how to debug mysql has gone?

  - by fefe

  I have a virtual machine(Ubuntu 12.04, MySQL 5.5) running under VMware and is dedicated to host a mysql server. I connect to this server on internal IP. I'm trying to find out why I get mysql server has gone error. One my windows machines apache it stops because of this issue. I have been trying to fine tune my mysql my.cnf with the following parameters but did not bring the desired result. # Instead of skip-networking the default is now to listen only on # localhost which is more compatible and is not less secure. bind-address = 0.0.0.0 # # * Fine Tuning # wait_timeout = 180 key_buffer = 384M max_allowed_packet = 64M thread_stack = 192K thread_cache_size = 8 # This replaces the startup script and checks MyISAM tables if needed # the first time they are touched myisam-recover = BACKUP max_connections = 500 table_cache = 64 #thread_concurrency = 10 # # * Query Cache Configuration # query_cache_limit = 1M query_cache_size = 32M how to debug this issue what is missing from configuration to avoid this error?

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• Problem with APTonCD application

  - by Harikrishnan

  I created a iso image using aptoncd & burned it to a dvd. now when i tried to restore, the program does not detect the dvd in the drive. It shows "Please insert a disc in the drive." and if we click "ok" it shows "E: Failed to mount the cdrom.". The dvd is in the drive itself. I tried "sudo lshw -C disk" and the out put is: *-cdrom description: DVD-RAM writer product: DVDRAM GH22NS50 vendor: HL-DT-ST 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/scd0 logical name: /dev/sr0 logical name: /media/APTonCD logical name: /media/apt version: TN02 capabilities: removable audio cd-r cd-rw dvd dvd-r dvd-ram configuration: ansiversion=5 mount.fstype=iso9660 mount.options=ro,relatime,uid=1000,gid=1000,iocharset=utf8,mode=0400,dmode=0500 state=mounted status=ready *-medium physical id: 0 logical name: /dev/cdrom logical name: /media/APTonCD logical name: /media/apt configuration: mount.fstype=iso9660 mount.options=ro,relatime,uid=1000,gid=1000,iocharset=utf8,mode=0400,dmode=0500 state=mounted Then i checked in disk utility application. in that dvd rom is shown as "/dvd/sr0". my ubuntu version is 10.10. please help me to solve the problem.

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• slow virtualbox guest

  - by ecoologic

  I run a guest ubuntu 12.04 on a host ubuntu 12.04, with virtual box, and the guest is much, much slower than the host (ALT+TAB costs 4-5secs). I had a look around and I found contradicting opinions on virtualbox vs vmware (free), so I taught to keep the former. Both systems are updated, I installed the additions on the guest and I evenly split memory and video memory (64mb) between guest and host. I am running a toshiba m200 laptop with 4GB ram and shared video memory. The host bios does not include a configuration option for machine virtualization. I have 2 cpus and I can't give them both to the vm. Is there anything I overlooked that could solve my problem? Feel free to ask for more info, and thank you for any help. EDIT Idling with the monitor open the (single) guest cpu never gets below 55% and could raise to 80 - 90% just moving the mouse around, opening ff will cause the monitor to run 100% in the guest, while the host shows that both cpus are evenly working around 60%. My cpu is Intel® Core™2 Duo CPU T5450 @ 1.66GHz × 2. If this is not a configuration problem, does it mean my machine is too weak for virtualization?

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• Technique to Solve Hard Programming logic

  - by Paresh Mayani

  I have heard about many techniques which are used by developer/software manager to solve hard programming logic or to create flow of an application and this flow will be implemented by developers to create an actual application. Some of the technique which i know, are: Flowchart Screen-Layout Data Flow Diagram E-R Diagram Algorithm of every programs I'd like to know about two facts: (1) Are there any techniques other than this ? (2) Which one is the most suitable to solve hard programming logic and process of application creation?

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• Now Available:Oracle Utilities Customer Care & Billing Version 2.4.0 SP1

  - by Roxana Babiciu

  We are pleased to announce the general availability of Oracle Utilities Customer Care & Billing 2.4.0 SP1. Key Features & Benefits: Oracle Utilities Customer Care & Billing 2.4.0 SP1 includes several base enhancements and a new licensable module called Customer Program Management. Key base enhancements in this release are: Configuration Migration Assistant (Additional Migration Plans) – Configuration Migration Assistant (CMA) was introduced in Oracle Utilities Application Framework V4.2.0 to supersede the ConfigLab facility. Oracle Utilities Customer Care and Billing now has a large number of migration plans to support migrating administration objects between environments. Encryption – Ability to configure encryption for fields that store sensitive data such as credit card numbers, bank account numbers, social security numbers, and MICR ID. Single Euro Payments Area (SEPA) Direct Debit – Functionality for configuring recurring direct debit payments in accordance with the Single Euro Payments Area (SEPA) initiative. Usage Enhancement for Bill Print – Allows additional information to be captured on a usage request to support billing when meter reads are not obtained from Oracle Utilities Customer Care & Billing but from a meter data management system (e.g. Oracle Utilities Meter Data Management). Preferences Portal – Communication preference zones allowing utilities to track customers’ preferred communication channels for various types of notifications or communications (e.g. phone, SMS, email). More information can be found on OPN!

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• If your algorithm is correct, does it matter how long it took you to write it?

  - by John Isaacks

  I recently found out that Facebook had a programming challenge that if completed correctly you automatically get a phone interview. There is a sample challenge that asks you to write an algorithm that can solve a Tower of Hanoi type problem. Given a number of pegs and discs, an initial and final configuration; Your algorithm must determine the fewest steps possible to get to the final configuration and output the steps. This sample challenge gives you a 45 minute time limit but allows you to still test your code to see if it passes once your time limit expires. I did not know of any cute math solution that could solve it, and I didn't want to look for one since I think that would be cheating. So I tried to solve the challenge the best I could on my own. I was able to make an algorithm that worked and passed. However, it took me over 4 hours to make, much longer than the 45 minute requirement. Since it took me so much longer than the allotted time, I have not attempted the actual challenge. This got me wondering though, in reality does it really matter that it took me that long? I mean is this a sign that I will not be able to get a job at a place like this (not just Facebook, but Google, Fog Creek, etc.) and need to lower my aspirations, or does the fact that I actually passed on my first attempt even though it took too long be taken as good?

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• SeeWhy Adds Social Media Remarketing Tool

  SeeWhy has launched Conversion Manager, an automated Web analytics service that can optimize an ecommerce retailer&#146;s conversion rates by remarketing with e-mail and social media.

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• Is it possible to use the Volume Notifications from Gnome Shell in XFCE?

  - by Uri Herrera

  I somehow had them working before in 11.10 but I don't really remember what did I do back then other than activating "load Gnome components on start up" in the XFCE's settings manager. I've tried the same in 12.04 but doesn't seem to do anything, I specifically ask for the Volume notifications as other notifications used notify-osd or xfce4-notifyd but the volume one was Gnome's (I found that later) As far as I know it uses notification-daemonbut installing it instead of the other two doesn't give me the correct notifications. I'm using XFCE 4.10

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• Managing service passwords with Puppet

  - by Jeff Ferland

  I'm setting up my Bacula configuration in Puppet. One thing I want to do is ensure that each password field is different. My current thought is to hash the hostname with a secret value that would ensure each file daemon has a unique password and that password can be written to both the director configuration and the file server. I definitely don't want to use one universal password as that would permit anybody who might compromise one machine to get access to any machine through Bacula. Is there another way to do this other than using a hash function to generate the passwords? Clarification: This is NOT about user accounts for services. This is about the authentication tokens (to use another term) in the client / server files. Example snippet: Director { # define myself Name = <%= hostname $>-dir QueryFile = "/etc/bacula/scripts/query.sql" WorkingDirectory = "/var/lib/bacula" PidDirectory = "/var/run/bacula" Maximum Concurrent Jobs = 3 Password = "<%= somePasswordFunction =>" # Console password Messages = Daemon }

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• GDL Presents: Women Techmakers with JESS3

  GDL Presents: Women Techmakers with JESS3 Join Leslie, COO and Co-founder of JESS3, in conversation with Megan Smith and Betsy Masiello, as they discuss Leslie's experience growing a design business from two employees to a transnational operation. Hosts: Megan Smith - Vice President, Google [x] | Betsy Masiello - Policy Manager Guest: Leslie Bradshaw - President, COO and Co-founder, JESS3 From: GoogleDevelopers Views: 0 3 ratings Time: 01:00:00 More in Science & Technology

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• Un représentant d'Intel très confiant sur l'avenir de MeeGo, Nokia aurait augmenté les salaires des employés travaillant sur l'OS

  Un représentant d'Intel très confiant sur l'avenir de MeeGo Nokia aurait augmenté les salaires des employés travaillant sur l'OS Peter Biddle, ancien employé emblématique de Microsoft actuellement manager général des produits et services chez Intel, s'est exprimé sur la controverse créée par l'annonce du partenariat stratégique entre Nokia et Microsoft. Selon lui, son impact serait très exagéré sur l'avenir de MeeGo. D'après Biddle, MeeGo a beaucoup de potentiel à long terme et peut toujours prétendre à la troisième place du marché des OS mobiles derrière Android et iOS. La possibilité de dév...

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• Oracle PeopleSoft PeopleTools 8.53 Release Value Proposition (RVP) published

  - by Greg Kelly

  Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin-top:0in; mso-para-margin-right:0in; mso-para-margin-bottom:10.0pt; mso-para-margin-left:0in; line-height:115%; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi;} The Oracle PeopleSoft PeopleTools 8.53 Release Value Proposition (RVP) can be found at: https://supporthtml.oracle.com/epmos/faces/ui/km/DocumentDisplay.jspx?id=1473194.1 The PeopleSoft PeopleTools 8.53 release continues Oracle’s commitment to protect and extend the value of your PeopleSoft implementation, provide additional technology options and enhancements that reduce ongoing operating costs and provide the applications user a dramatically improved experience. Across the PeopleSoft product development organization we have defined three design principles: Simplicity, Productivity and Total Cost of Ownership. These development principles have directly influenced the PeopleTools product direction during the past few releases. The scope for the PeopleTools 8.53 release again builds additional functionality into the product as a result of direct customer input, industry analysis and internal feature design. New features, bug fixes and new certifications found in PeopleTools 8.53 combine to offer customers improved application user experience, page interaction, and cost-effectiveness. Key PeopleTools 8.53 features include: · PeopleSoft Styles and User Interaction Model · PeopleSoft Data Migration Workbench · PeopleSoft Update Manager · Secure by Default Initiative Be sure to check out the PeopleSoft Update Manager. Many other things are also happening in this time frame. · See the posting on the PeopleSoft Interaction Hub https://blogs.oracle.com/peopletools/entry/introducing_the_peoplesoft_interaction_hub · The application 9.2 RVPs will also be published over the next few months · If you haven't seen it, check out John Webb's posting on the PeopleSoft Information Portal https://blogs.oracle.com/peoplesoft/entry/peoplesoft_information_find_it_quickly

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