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• USB Mouse/Keyboard not working

  - by crstn

  I installed Ubuntu 11.10 after booting it from a USB drive. Everything worked fine there, after booting the keyboard worked in grub but not after Ubuntu was booted. I can unplug either of them and plug them in via a PS2/USB adapter and the device will work. After switching a couple of times, I got the keyboard and mouse both working via usb but after I rebooted either stopped working. How can I fix this? The mouse is a Razer Krait and the keyboard is a Logitech ClassicKeyboard 200.

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• How to fix additional STA driver installation error on 12.04

  - by nibl

  I have a Broadcom BCM4313 wireless driver. It worked fine under 11.04 and the upgrade to 11.10 also went smoothly. The 12.04 upgrade has broken the wireless connection. I've seen several posts about this and all presume you can activate the STA drivers, but that's where it fails on this machine. The log is in /var/log/jockey.log: WARNING: modinfo for module wl failed: ERROR: modinfo: could not find module wl WARNING: /sys/module/wl/drivers does not exist, cannot rebind wl driver DEBUG: BroadcomWLHandler enabled(): kmod disabled, bcm43xx: blacklisted, b43: blacklisted, b43legacy: blacklisted (repeat of last error several times) Any ideas how to proceed?

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• Can't Boot Ubuntu, video drivers or x-server problem?

  - by ZacharyH

  I was uninstalling some programs that I installed to try and get my iPod touch working with Ubuntu (I gave up on that) when ubuntu just crashed. Now after I choose ubuntu in GRUB, it gives me a screen that says "Ubuntu is running in low-graphics mode: your screen, graphics card, and input device settings could not be detected correctly. You will need to configure these yourself" It was working just fine before I started to uninstall those programs. I think that I might have uninstalled something necessary to the system. If I click OK on the screen, it gives me options to reconfigure, troubleshoot, exit to console, or restart X. But no matter what I choose I still can't boot into ubuntu - I get stuck looking at the splash screen which stalls forever. I was receiving support from one of my mate's and he was doing something with the LiveCD, and now the message doesn't pop up any more, I just get stuck at a never ending splash screen. Any help would be appreciated, thanks!

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• Crash on shutdown when using second monitor

  - by plua

  I have recently added a second monitor to my setup. Instead of one VGA monitor, I now have one VGA and one DVI monitor hooked up to the computer. The displays work just fine. However, ever since this monitor was added Ubuntu (10.10) does not shut down properly. I go to shutdown and it starts shutting down but just hangs and I need to manually shut it down. This has been like this for weeks and I feel not comfortable shutting it down this way over and over again. Has anybody any idea what this can be? Or, also useful, does anybody know how to get some info on why this crash occurs? Any logs that can be used for this? Thanks! Paul

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• After 14.04 update video/totem won't play midi

  - by bruce

  Prior to the upgrade, I could be on wikipedia and play the 'play' links fine where totem would open a window and have screen graphics go on. Now, after researching, installing VLC and it's extensions, making sure the gnome codec installer is activated, and on and on, all I get is : "The parameters passed to the application had an invalid format. Please file a bug! The parameters were: --transient-for=16777296 gstreamer|1.0|totem-plugin-viewer|audio/x-midi-event decoder|decoder-audio/x-midi-event" When totem/video opens and I'm not sure whether the bug is being reported or not. Meaning I don't know if APPOrt is active for this as there's no box with a checkmark in it display. AND the window for totem/video ALWAYS has the sound muted when it opens.

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• Algorithm to increase odds of matching when randomly selecting

  - by Bryan

  I am building a mobile game loosely based on dual n-back http://brainworkshop.sourceforge.net/tutorial.html Now with the game I have 9 squares (numbered 1 through 9) and 9 letters (A through K) In the current code, I randomly select a square (e.g. 3) and a letter (e.g. C), then repeat the random selection for the next turn. For 1-back, I test whether either, neither or both match the previous turn. The problem with my current code is I get very few matches - I can go through many turns without having either match. How can I increase the match frequency, or alternatively decrease the randomness so a match is more likely? I am not looking for specific code (but pseudo-code would be fine) - just more an approach to increase match frequency.

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• mouse and mousepad not working properly

  - by snake

  Ubuntu 12.04 LTS Samsung Q35 The mouse pad has stopped working, only the buttons work. The external mouse is also behaving very oddly, the mouse pointer works, but the button is not working properly, it has to be pressed many times or held down to select anything, and when anything that I select behaves as though the mouse is being clicked all the screen, settings will keep changing, the page will scroll, sliders will move up and down, tabs will toggle etc, so everything is unusable with the mouse, cannot even use the browser as it keeps scrolling the page up and down. I have tested the mouse on another computer, and it works fine. Please bear in mind that I am also a complete Linux novice, I installed Ubuntu on an old laptop for my kids, that is the limit of my experience.

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• Security for LDAP authentication for Collabnet

  - by Robert May

  In a previous post, I wrote about how to get LDAP authentication working in Collabnet. By default, all LDAP users are put into the Users role on the server.  For most purposes, this is just fine, and I don’t have a way to change this.  The documentation gives hints that you can add them to other roles, but for now, I don’t have the need. However, adding permissions to different repositories is a different question. To add them, go to the repositories list, select Access Rules and then you can enter in their username, as it sits in Active Directory to the lists for the repositories or for the predefined groups that you have created.  To my knowledge, you cannot use the Active Directory groups in collabnet, which is a big problem.  Needing to micromanage users really limits the usefulness of the LDAP integration. Technorati Tags: subversion,collabnet

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• tty1 prompt before lightdm

  - by David Weldon

  After upgrading to 13.10, every time I boot I'm shown a login prompt (tty1) for ~30 seconds before lightdm automatically starts. Everything works fine after that. Any ideas on what I could try to fix/debug this? My /var/log/lightdm/x-0-greeter.log contains lines like the following: ** (at-spi2-registryd:1381): WARNING **: Failed to register client: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name org.gnome.SessionManager was not provided by any .service files ** (at-spi2-registryd:1381): WARNING **: Unable to register client with session manager WARNING: Failed to open sessions directory: Error opening directory '/usr/share/lightdm/sessions': No such file or directory ** Message: PID 1534 (we are 1534) sent signal 15, shutting down... ** (gnome-settings-daemon:1401): WARNING **: Name taken or bus went away - shutting down Searching for these errors results in a variety of bugs filed over the years. Maybe a clean install will fix this.

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• Disqus thread migration. Gotchas?

  - by sramsay

  I've been migrating a site to a new domain. The site itself is pretty straightforward (it uses Jekyll), and everything has gone fine -- except migration of Disqus threads. I've had partial success -- some of the threads have migrated successfully, but not all. I've tried the domain migration wizard (which caught a few), the URL mapper (which caught a few), and the 301 redirect crawler (which caught a few). But the remaining threads just won't move, no matter which method I use. So, I suppose I suppose I'm asking if there are any "gotchas" I should know about with this. When you execute any of these migration tools, it says it will "take awhile." Does that mean hours? Days? I can't tell if it's working, and there's no logging or error reporting that I can see.

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• How to use auto login in a remastered LiveCD?

  - by Jayo

  I have been creating a custom live CD of Ubuntu 11.10 using remastersys, everything goes well except that the live session asks for a login. the login is automatically set as "custom" and the password is blank. this is fine, but I would rather it went direct to the desktop in a live session as you would expect from other distro live cds. I have asked on the remastersys forums, the question has gotten a lot of views, but no answer as of yet, I am wondering has anyone here remastered a distro and come across the login problem, and if so, how did you fix it?

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• Key binding in Compiz no longer works

  - by Dave M G

  I have a key binding set in CompizConfig settings manager that runs this command: sleep .5 && xset -display :0.0 dpms force off I have it attached to Super+~. It's worked fine for years. Now, suddenly, it stopped working. When I open CompizConfig the key binding is blank. I set it again, close CompizConfig, and it doesn't work. So I open CompizConfig again, and the key binding is blank again. It won't save what I set it to. How do I get my key binding and command to work, and stay working.

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• How can I remove the "Dash Home" icon from the Unity launcher?

  - by user27451

  My notebook has a widescreen display so vertical space is an absolute premium for me. When I installed Ubuntu 11.10 I was disappointed to see that a new icon confusingly named "Dash Home" had been added to the very top of the Unity launcher. I can't move it to the bottom (by dragging it) and it doesn't have a context menu with which to remove it (by unchecking "Keep In Launcher"). It's horrible. How can I remove it from the Unity launcher and reclaim the space that was taken from me? (I realize that if it's removed I'll have to open the dashboard with the super key - I'm fine with that)

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• How do I optimize searching for the nearest point?

  - by Rootosaurus

  For a little project of mine I'm trying to implement a space colonization algorithm in order to grow trees. The current implementation of this algorithm works fine. But I have to optimize the whole thing in order to make it generate faster. I work with 1 to 300K of random attraction points to generate one tree, and it takes a lot of time to compute and compare distances between attraction points and tree node in order to keep only the closest treenode for an attraction point. So I was wondering if some solutions exist (I know they must exist) in order to avoid the time loss looping on each tree node for each attraction point to find the closest... and so on until the tree is finished.

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• Sortable Accordion Modified to Implement More On Click However New Levels Will Not Expand

  - by Tim Marshall

  JS Fiddle: http://jsfiddle.net/JF7PD/ I've been doing extensive work on this and I've just able almost got it fully working. The reason why I am asking for help now is that I don't have a clue why my newly added accordion(s) do not expand upon being clicked. I've got a feeling it may be due to the newly added code as I was having problems using my code in the file so instead I looked at the source and copied the accordion level to be used and all appears to look fine apart from them not expanding. Thank you for any help in advanced, Best Regards, Tim

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• No splash screen on hibernate

  - by Marky

  Hibernate is working fine. A bit slow when resuming from a hibernate but I can bear with it just so that I have all open applications on the desktop as I left it. Then again the "slowness" might be because of the 4GB RAM, although I'm assuming only what is used gets swapped and not the entire memory. Going back, my question is has anyone been able to make Ubuntu show a splash screen or some kind of indicator/progress bar to show while hibernating or while resuming? I remember with SuSE on my HP Compaq Presario notebook it had messages appear during and after. Better than nothing, I guess. Thanks in advance! :D

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• If there's no problem treating a statement as an expression, why was there a distinction in the first place in some programming languages?

  - by cdmckay

  Why do we have the distinction between statements and expressions in most programming languages? For example, in Java, assuming f and g return ints, this still won't compile because it's a statement and statements don't return values. // won't compile int i = if (pred) { f(x); } else { g(x); } but in Scala, it's very happy with treating if as an expression. // compiles fine val i: Int = if (pred) f(x) else g(x) So if there's no problem treating an if statement as an expression, why was there a distinction in the first place?

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• Links in my site have been hacked

  - by Funky

  In my site I prefix the images and links with the domain of the site for better SEO using the code below: public static string GetHTTPHost() { string host = ""; if (HttpContext.Current.Request["HTTP_HOST"] != null) host = HttpContext.Current.Request["HTTP_HOST"]; if (host == "site.co.uk" || host == "site.com") { return "http://www." + host; } return "http://"+ host; } This works great, but for some reason, lots of links have now changed to http://www.baidu.com/... There is no sign of this in any of the code or project, the files on the server also have a change date when i last did the publish at 11 yesterday, so all the files on there look fine. I am using ASP.net and Umbraco 4.7.2 Does anyone have any ideas? thanks

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• missing sound-volume-applet

  - by psipi

  I am using ubuntu 12.10. I had some problems with my skype and audio. So I did the following and it's working fine now: sudo apt-get purge pulseaudio sudo apt-get autoremove sudo reboot After this I reinstalled pulseaudio via sudo apt-get install pulseaudio But now my icon in the gnome-panel is missing. After searching on google I found that that the sound-volume-applet ist missing. So is this right? And do you get the icon in the panel?

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• Shifting from XNA/C# to C++?

  - by Fat_Scout

  For a while now, I've been working with XNA for game design and development (although only for personal use ATM.) Overall, I'm a major fan of XNA itself, and it's overall "feel." However, due to the fact that: XNA seems to have a lack of support (no Metro support, no updates since 2010, etc.) I plan to try and get a job in the game development industry, and due to C++'s dominance, being more familiar with it would be very useful XNA only supports Windows (non-Metro) and Xbox 360, while I am interested in Mac and (to a lesser extent) Linux support. I've been trying to shift over to C++ as my main language. However, I do not want to focus on learning raw DirectX/C++ at this time, so I've been looking for a higher level C++ API (something about the same level as XNA, although something a bit more low-level would be fine) with a feel similar to XNA. So, for someone switching from C#/XNA to C++, what would my best choice(s) be for API's similar to XNA, although unmanaged and running on C++?

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• Unstable wireless connection on Ubuntu only (router config problem?)

  - by crunch

  so I'm using Ubuntu 14.04 and I could connect to all Wi-Fi's that I've tried and it worked fine... Except for this router that I have at home. This connection seems to be unstable, it just randomly disconnects and reconnects. On the same machine I have Ubuntu 13.10 (same problem) and Windows 8 (no problem). Also there are no Wi-Fi problems when I connect with my Android phone. So I figured it must be some config issue. I tried tweaking some settings/restoring default on the router but I don't really know what I'm doing so, unsurprisingly, it didn't fix the problem.

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• How do I make a subdomain of a subdomain?

  - by joe

  I have a server that hosts mydomain.com. Then I have a server that hosts subdomain1.mydomain.com. On the subdomain1.mydomain.com server, how do I make subdomains? For instance I want to create subdomain2.subdomain1.mydomain.com I have my subdomain1.mydomain.com site in /home/USER/public_html and it is working just fine. But When I try to create subdomain2.subdomain1.mydomain.com, it says Server not found in the browser. I have tried so many configurations in my /etc/hosts and /etc/apache2/sites-available/subdomain2.subdomain1.mydomain.com, without any luck Can I get some detailed instructions maybe? I have looked everywhere and every place tells you different, with no luck. Ubuntu Server 11.10 w/ the Lamp Stack option

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• issue with vmd install not working any more. lubuntu 12.10

  - by Magpie

  I had vmd working on my lubuntu 64 bit but all of a sudden I was getting errors when I tried to run it. I tried reinstalling it but no joy. The error I now get when I try to run rlwrap: No match. I don't use make unless I have to so I don't know all that much about it. I have removing vmd completely to see if that helped. I tried the suggestions it made (I am sorry, I can't remember the details but it was moaning about CUDA and my graphic drivers for a while. I had not updated it or anything. It was fine until I went away from the computer and came back to it like that. If nobody can help I will try reinstalling my system and see if that helps.

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• IIS to parse php in a .dll files

  - by Agony

  The .dll files ain't the dynamic link library. That's what the client side software calls for (cannot change). Its essentially a php script that should run and return specific values. However currently it simply downloads it and that results in a failure. That's what it results in on a Apache server: [Update] NewVersion=1 UpdateFileNumber=1 UpdateFile1=update1/LPServerInfo.dat ServerNumber=1 Server1=http://88.159.116.217/ here it is on IIS: 198.24.133.74:8080/update.dll?0 renaming it to php works fine for testing - it runs and returns values. I edited the MIME and set .dll to application/x-httpd-php but that doesn't seem to work in IIS. Any solutions?

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• movement of sprites with kinect and xna

  - by pablopp83

  im working on a proyect with kinect sdk and xna 4.0. i need take the position of the hands and draw a sprite over it. im doing it directly and, because of that, i get a "trembling hands" effect. so, i was thinking on make the sprite move from the previous position to the new one, given in every frame by the new hand position. this way, the sprite does not jump from one position to another. this is working just fine, but im using a constant value for the velocity, and i really would like to use a variable velocity given by the difference between the prev and the new position. this is, if the hand move more quickly in the reality, the velocity will be higher. I really dont have a clue on how to make this works. can somebody point me in the right direction? thanks.

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