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• Elantech trackpad being identified as a logitech wheel mouse.

  - by Nathan Cox

  I recently purchased a Samsung RF510 laptop computer, which I absolutely love. However, upon installing Ubuntu 10.10 onto it I couldn't get the trackpad to function properly. It worked as a basic mouse (point and click) but had no functionality for edge scrolling or any of the multitouch settings the trackpad is capable of. After doing a lot of research I discovered the reason is a known issue where the Ubuntu kernel will improperly detect an Elantech trackpad as a logitech PS/2 wheel mouse, and as such will gain none of the functionality that seems to be coded for synaptics trackpads. The question I have is: does anyone know a way to get this working properly? This is my first time trying to run Ubuntu on a laptop (actually, it's my first laptop in the last 12 years) and I'm finding the experience to be intolerable without the basic scrolling/zooming/etc I've been used to using for as long as I can remember.

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• Top 10 Transact-SQL Statements a SQL Server DBA Should Know

  Microsoft SQL Server is a feature rich database management system product, with an enormous number of T-SQL commands. With each feature supporting its own list of commands, it can be difficult to remember them all. MAK shares his top 10 T-SQL statements that a DBA should know. Join SQL Backup’s 35,000+ customers to compress and strengthen your backups "SQL Backup will be a REAL boost to any DBA lucky enough to use it." Jonathan Allen. Download a free trial now.

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• Physics from other games

  - by Carlosrdz1

  I'm making a platform engine with XNA Game Studio, and I've solved almost everything about colliding stuff. But now, I'm searching for good physics for the player, I'm trying to emulate characters from other games like Mario from Super Mario World, or MegaMan X... do you know a website or something, where the physics from that games are revealed? I remember seen a page with something like that. Or what's the process you think is the best to emulate physics from other games? Just trial and error? Thank you.

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• What are the most common stumbling blocks when it comes to learning programming, in order of difficulty?

  - by blueberryfields

  I seem to remember that linked lists, recursion, pointers, and memory management are all good examples of stumbling blocks - places where the aspiring programmer typically ends up spending significant time trying to understand a concept before moving on and improving, and many end up giving up and not improving. I'm looking for a complete/comprehensive list of these types of stumbling blocks, in rough estimated order of difficulty to learn, with the goal of making sure that an educational program for programmers is structured to properly guide students through them Is this information available somewhere? Ideally, the difficulty to learn will be measured in some sort of objective manner (ie, % of students which consistently fail to learn the concept) What sources are most appropriate for obtaining this information?

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• What is considered to be a "modification" of sources under the BSD license?

  - by Den

  I have a question about the 3-clause BSD license based on it's Wiki description. It states: Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: ... What is understood by "modification"? Specifically I am interested whether any/all of the following is considered as such modification: 1) reading the original sources and then re-implementing; 2) reading the original sources, waiting for a year and then re-implementing something based on whatever you could remember; 3) direct and very significant "complete" refactoring of the original sources.

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• Upgrade to Quantal unity top bar, side bar, and window declorations missing

  - by Nicky Bailuc

  I upgraded from 12.04.1 to 12.10 via the Update Manager and the upgrade said it completed successfuly. However after rebooting the unity task bar was missing along with the launch bar and the window declorations. All compiz settings seemed to be purge deleted, and at first bootup it gave me a system error. The desktop exists, and once I remember I messed up the compiz settings and just had to press Ctrl+Alt+F1 and in the virtual terminal type "unity --reset" then "sudo reboot". Everything worked as if i reinstalled the entire operating system. This time it said “Warning no variable set. setting to :0. The reset option is now dupricated”. What am I suppose to do now? I need this fixed as soon as possible because I need a couple of certainly installed programs and the data within them (long story short).

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• eGalax Touchscreen not working Jolicloud 1.2

  - by craigsmith86

  I have an eGalax touchscreen on an Acer Aspire One running Jolicloud 1.2 I have had success getting this touchscreen to work correctly on ubuntu 10.04NBR, 11.04 and Kubuntu 12.04 and Puppy Linux, so I am pretty happy with how it SHOULD be done. However, I cannot get it to calibrate correctly or remember calibration settings. I have installed the eGalax utility (all available versions) and it does not recognize the screen. Xinput_calibrator works but the config cannot be made permanent. Problems I have identified: -Joli doesn't have an xorg.conf file and does not use xorg.conf.d for evdev configuration -Setting configs through Hal doesn't work anymore The best I can get is a poorly adjusted touchscreen with a reversed Y axis. Any help greatly appreciated

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• Byte Size Tips: How to Insert a YouTube Video Into a PowerPoint Presentation in Office 2013

  - by Taylor Gibb

  How many times have you needed to show a video during a presentation? Using YouTube and PowerPoint, it is now possible. Insert a YouTube Video Into a PowerPoint Presentation in Office 2013 Go ahead and open PowerPoint and switch over to the Insert tab. Then click on Video, and then Online Video… If this is your first time inserting a video from YouTube, you will need to add it as a provider from the bottom left hand side of the dialog. Once added, you will be able to enter a search term. You can then simply select a video and hit the insert button. That’s all there is to it. Remember Videos come with their own set of editing options, so be sure to take a look around.     

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• Choosing a mobile advertising mediator over going it alone

  - by Notbad

  We have finished our first game for IOS/Android. We would like to give it away adding ads to it. I have been reading a lot about the subject but it is a bit overwhelming for starters. From what I read, it seems there are some important points to have into consideration: 1) Do as much localization as you can (target your audience with ads they could be interested for the zone they live in). 2) Do not over advertise in your application. At this moment we have decided to go with AdMob. It seems an easy option to setup for beginners and have a good set of ad networks. My question is, will we earn less for example for iAds using adMob than implementing iAds without a mediator? Are adMob paying less than others (this is what I remember for some artilces I read)?. It would be nice to hear from people with experience on this to let us light our way a bit.

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• Cursor (touchpad) moves and clicks erratically

  - by James Wood

  Sometimes (usually after two-finger scrolling) the touchpad on my Asus X54C becomes unresponsive and the cursor begins to click and move small distances. Clicking seems to happen more often than moving. Unlike with other similar problems, I've never seen the cursor move to (0, 0). Suspending (closing the lid) and unsuspending doesn't help, and neither does moving to a tty and back or rebooting. I've also tried disabling the touchpad via Fn+F9. That tends to take a long time, but doesn't have any effect. I'm on 13.10 at the moment, but I remember it happening on 13.04 as well. Here's the pointer section of xinput: ? Virtual core pointer id=2 [master pointer (3)] ? ? Virtual core XTEST pointer id=4 [slave pointer (2)] ? ? ETPS/2 Elantech Touchpad id=12 [slave pointer (2)]

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• Should I forward the a call to .Equals onto .Equals<T>?

  - by Jaimal Chohan

  So, I've got you bog standard c# object, overriding Equalsand implementing IEquatable public override int GetHashCode() { return _name.GetHashCode(); } public override bool Equals(object obj) { return Equals(obj as Tag) } #region IEquatable<Tag> Members public bool Equals(Tag other) { if (other == null) return false; else return _name == other._name; } #endregion Now, for some reason, I used to think that forwarding the calls from Equals into Equals was bad, no idea why, perhaps I read it a long time ago, anyway I'd write separate (but logically same) code for each method. Now I think forwarding Equals to Equals is okay, for obvious reasons, but for the life me I can't remember why I thought it wasn't before. Any thoughts?

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• What would most games benefit from having?

  - by Phil

  I think I've seen "questions" like this on stackoverflow but sorry if I'm overstepping any bounds. Inspired by my recent question and all the nice answers (Checklist for finished game?) I think every gamedev out there has something he/she thinks that almost every game should have. That knowledge is welcome here! So this is probably going to be an inspirational subjective list of some sorts and the point is that anyone reading this question will see a point or two that they've overlooked in their own development and might benefit from adding. I think a good example might be: "some sort of manual or help section. Of course it should be proportional to how advanced the game is. Some users won't need it and won't go looking for it but the other ones that do will become very frustrated if they can't remember how to do something specific that should be in the manual". A bad example might be "good gameplay". Of course every game benefits from this but the answer is not very helpful.

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• Skype does not save user configuration

  - by varsketiz

  On Ubuntu 10.10, I have recently started to experience this problem: For some reason Skype won't save any settings except "Sign in on startup". When Skype starts and tries to sign in it is unsuccessful (it shows incorrect password, in red) every time (I have provided the correct password). I always have to click to show contacts in groups, it does not remember it. Every time I have to go to options and update some notification settings. I know all these things should be "remembered" by Skype - this problem started only recently. I don't recall fiddling with any permissions that could have likely caused that. Do you know what the problem might be? I uninstalled (marking for complete configuration removal) and re-installed Skype, but it still remembers my username (why??). Can I find Skype configuration files on the filesystem somewhere and change permissions for them - or even better - edit the files to set what I want?

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• PowerPivot Workshop in Frankfurt (and London early-bird expiring soon) #ppws

  - by Marco Russo (SQLBI)

  One week ago I described the PowerPivot Workshop Roadshow that we are planning in several European countries. The news today is that the Workshop will be in Frankfurt (Germany) on February 21-22, 2011 ! The registrations are open on www.powerpivotworkshop.com web site. The early-bird price for Frankfurt will expire on February 4, 2011. And if you are willing to attend the London date on Febrary 7-8, remember that early-bird price for London is going to expire on Monday (January 17) ! Save your money...(read more)

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• Graphic demonstrating emphasis of front end in web apps

  - by sohail

  I remember stumbling across an amusing graphic a year or so ago which demonstrated the tiers of web development. The back-end was shown as a tiny box, but the front end was shown as a huge box crammed with lots of front-end technologies like AJAX, DHTML. This is all a vague recollection. Does anyone know where on the Intraweb this graphic might be? It was probably on a programming cartoon site, but I only view XKCD on a regular basis, and I couldn't find it on there. Although tagged as fun, my request does have a productive edge to it - it would be quite useful in driving home to my colleagues how UI top-heavy web application development has become.

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• Ubuntu 12.04 not Locking Encrypted Hard Drive on Log Out

  - by J.L.

  I'm running Ubuntu 12.04 with Gnome 3.4. I have two external hard drives. I encrypted both using Ubuntu's Disk Utility. When I use Nautilus to mount them, I'm asked for my decryption password. Regardless of whether I then click "Forget password immediately" or "Remember password until you logout", though, I find that Ubuntu does not lock the drives when I log out. Rather, when I log back in, they're still mounted. (To be clear, restarting the computer does unmount them so that they require the password on the next log in.) I'm concerned that these drives are remaining unprotected when I log out without restarting my computer. I would be grateful for help understanding whether this is a bug. Thank you!

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• Why are interfaces useful?

  - by Pankaj Upadhyay

  I have been studying and coding in C# for some time now. But still, I can't figure the usefulness of Interfaces. They bring too little to the table. Other than providing the signatures of function, they do nothing. If I can remember the names and signature of the functions which are needed to be implemented, there is no need for them. They are there just to make sure that the said functions(in the interface) are implemented in the inheriting class. C# is a great language, but sometimes it gives you the feeling that first Microsoft creates the problem (not allowing multiple inheritance) and then provides the solution, which is rather a tedious one. That's my understanding which is based on limited coding experience. What's your take on interfaces? How often you make uses of them and what makes you do so?

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• Skype does not save configuration

  - by varsketiz

  Hello, on ubuntu 10.10, I have recently started to experience this problem: for some reason skype wont save any settings except "sign in on startup" when skype starts and tries to sign in it is unsuccessful (it shows incorrect password, in red) every time. no matter if I have provided good password the last time. I always have to click to show contacts in groups, it does not remember it. Every time I have to go to options and update some notification settings. I know all these things should be "remembered" by skype - this problem started only recently. I don't recall fiddling with any permissions that could have likely caused that. Do you know what the problem might be? I tried uninstall (marking complete configuration removal) and install fresh, but it still remembers my username (why??) Can I find skype configuration files on the filesystem somewhere and change permissions for them - or even better - edit the files to set what I want..?

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• The Gates Books&ndash;Finished

  - by MarkPearl

  Today I can finally say that I finished both of my Bill Gates books that had been lying on the shelf for several years. The books were… The Road Ahead (1995) Business @ the Speed of Thought (1999) I enjoyed “The Road Ahead”, purely because it was fun to read about someone looking into the future at technology, while I could read it looking at the past. In fact I was quite impressed with how much he got right and it was also nice to remember “The good old days”. Business @ the Speed of Thought was a harder read for me. The book still had some good insights, but was tough going at times (possibly because it was several hundred more pages than the first). All that being said, I can now finally place them back on the shelf knowing that they have been read.

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• Is the "One Description Table to rule them all" approch good?

  - by DavRob60

  Long ago, I worked (as a client) with a software which use a centralized table for it's codified element. Here, as far as I remember, how the table look like : Table_Name (PK) Field_Name (PK) Code (PK) Sort_Order Description So, instead of creating a table every time they need a codified field, they where just adding row in this table with the new Table_Name and Field_Name. I'm sometime tempted to use this pattern in some database I design, but I have resisted to this as from now, I think there's something wrong with this, but I cannot put the finger on it. It is just because you land with some of the structure logic within the Data or something else?

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• How do I rename a mounted Truecrypt volume?

  - by invert

  When I mount the Truecrypt file on my USB drive it shows up as truecrypt1. The volume is FAT, using mtools to rename a volume label involves e2label /dev/sdbx, however truecrypt1 does not map to a physical partition. fdisk -l does not show the volume partition (only the physical USB device), and df -h lists the volume path as /dev/mapper/truecrypt1. Finally, using the Nautilus 'Rename' context action, gives the error: "Sorry, could not rename "truecrypt1" to "towel": Operation not supported by backend". Apparently this can be done in Win, but how can I rename this volume in Ubuntu? As Nicolas said, specifying the mount point names the partition the same. The truecrypt GUI does not remember the mount point I set, so I specify the mount points in a script which I placed in my main menu. #!/bin/bash gksudo truecrypt /media/usbdrive/encryptedfile /media/securedata/

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• What's the current best practice for C multithreading?

  - by Dexter

  I've been a Java (and PHP) developer for most of my life, but will need to use C for my next project. I remember some basic stuff we did back in school with fork, pthread, semaphores, etc. but I'm not sure if that's still the "way to go" here, or if there have been any recent developments/improvements etc. Google's results seem to be fairly dated. Or does that just mean that this is still the current "state of the art"? Or will I have to use a (system-independent) libary like glib if I want higher-level abstractions, like synchronized queues? What other libraries are there? (The programm will only have to run on Linux though)

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• How can you become a real programming polyglot?

  - by Yob

  I work as a Java programmer, but C and C++ were always my favourite languages during studies. Unfortunatelly I don't have an opportunity to work with them as often as I would like to. As a result I sometimes get realized that I don't remember something quite important (today example: inherited protected members cannot be accessed in derived class constructors). The other example could be Python and Haskell which I enjoy using but don't use everyday. I got an idea to write my own wiki with easy to forget things (e.g. bash tricks & tips) but I find no sense in writing there everything I can forget about coolest programming languages. I know that the best way would be having a side projects (I want to start working on some C/C++ open source project after graduation), but currently I have to write my graduation thesis and work so I merely don't have time to do this. How do you stay sharp in languages that you don't use everyday?

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• Join us for 2 JCP sessions today + beer

  - by heathervc

  Remember to join the 2 JCP sessions at JavaOne this afternoon in the Hilton.  First up the JCP.Next panel with JCP EC Members, followed by the 101 Ways to Participate BOF.  Stop in to learn what's new and how you can make the future Java and enjoy a beer or 2.  We will also be in the OTN Java Demogrounds in the Hilton Grand Ballroom from 4:00 - 4:30 PM.  Hope to see you there. JCP.Next: Reinvigorating Java Standards Session ID: BOF6272 Location: Hilton San Francisco - Plaza A/B Date and Time: 10/1/12, 4:30 PM - 5:15 PM 101 Ways to Improve Java: Why Developer Participation Matters Session ID: BOF6283 Location: Hilton San Francisco - Continental Ballroom 4 Date and Time: 10/1/12, 5:30 PM - 6:15 PM

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• How can I detect and delete all lost configuration folders?

  - by Takkat

  Over the time there is an increasing number of hidden .configuration folders in my home folder. Many of these come from applications I only installed for testing or from applications that I don't use any more. I would not mind really but these folders do clutter my home, and worse than that sum up to as much as 80 GBytes by now. As there are also applications I never heard of (at least I can't remember I had installed them) I hesitate to delete them. Is there a way to find out which folders came from purged applications? May there even be a way to auto-remove a configuration folder when purging (not removing) the application that created it?

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