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• Problems booting Ubuntu 10.10 with Nvdia GeForce 6600gt

  - by SlyrNemesis

  I am quite new to Ubuntu and I already stumbled upon a problem. I run Ubuntu 10.10 Maverick Meerkat now and Install went fine, when trying to boot the screen popped black and I faced this message "gpu lockup - switching to software fbcon." When setting the display to onboard VGA through BIOS Ubuntu has no problem at all, but when I switch back to my AGP card (which is a Nvidia GeForce 6600GT) I get that message again. I do not use VGA for that card I use my DVI cable for it. Does anyone have an answer for me to make this work? Thank you

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• Fixing a broken toolbox (In Visual Studio 2010 SP1)

  - by mbcrump

  I was recently running into a situation where every time I opened Visual Studio 2010 SP1, the following message would appear for about 60 seconds or so: "Loading toolbox content from package Microsoft.VisualStudio.IDE.Toolbox.ControlInstaller.ToolboxInstallerPackage '{2C98B35-07DA-45F1-96A3-BE55D91C8D7A}'" After finally get fed up with the issue, I started researching it and decided that I’d share the steps that I took to resolve it below: I first made a complete backup of my registry. I then removed the following key: [HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\VisualStudio\10.0\Packages\{2c298b35-07da-45f1-96a3-be55d91c8d7a}] I went to the following directory: C:\Users\Your Name Here\AppData\Local\Microsoft\VisualStudio\10.0\ and created a folder called bk and moved the .tbd files to that folder (they are hidden so you will have to show all files). I then removed the .tbd files in the root directory. I then launched Visual Studio 2010 SP1 again and it recreated those files and the problem was gone. Anyways, I hope this helps someone with a similar problem. I created this blog partially for myself but it is always nice to help my fellow developer.  Thanks for reading. Subscribe to my feed

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• Has the Appindicator or GtkMenu API changed in Saucy?

  - by marxjohnson

  I've written a custom application indicator, which isn't working properly on saucy. The menu is initialised with a few items, then updates regularly, adding or removing menu items. This worked fine <13.10, but on 13.10, the line that adds the menu to the indicator produces the following warning: Warning: /build/buildd/glib2.0-2.38.0/./gobject/gsignal.c:2475: signal 'child-added' is invalid for instance '0x24390e0' of type 'GtkMenu' self.ind.set_menu(self.menu) And the items added to the menu subsequently dont appear. A bug has been filed against several indicators for the same problem, but it's not clear to me whether this is a problem with the indicators as a result of an API change, or a bug in the GTK or Appindicator libraries. Does anyone know?

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• Menu bar and launcher missing in new installation of ubuntu 13.04

  - by Assimiz

  I have just installed ubuntu 13.04 on my ThinkPad laptop. I am missing the launcher and upper bar. I only found references to the same problem for upgrades, so I tried everything written here, here and here with no success. However, referring to the second link, I ran ccsm and found my Ubuntu Unity Plugin unchecked. Checking it required to also enable the OpenGL and so I did. But, apparently I am unable to enable the OpenGL. Trying to enable it manually...and the checkbox gets automatically unchecked after few seconds. Please help. Update: I have Intel graphics driver, maybe the problem is specifically with it?. I also tried running ccsm after logging using CTRL+ALT+F1 like given here. I was able to enable OpenGL and the Ubuntu Unity Plugin there, but still, no effect on my display, also after reboot.

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• Why is it an issue that it takes 2 digits to represent the number 10 in decimal?

  - by Crizly

  So we use hexadecimal which has the advantage of going up to 15 in single digits A-F, but why is it an issue that it takes 2 digits to represent the number 10 in decimal? I was reading up about hexadecimal and I came across these 2 lines: Base 16 suggests the digits 0 to 15, but the problem we face is that it requires 2 digits to represent 10 to 15. Hexadecimal solves this problem by using the letters A to F. My question is, why do we care how many digits it takes to represent 15? What is the importance of this number, and how does denoting it with a single character have any value?

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• Usb/vga not recognized anymore

  - by Peter Raeves

  I don't know what happened, but yesterday everything worked fine, but when I woke up this morning and booted my computer to Ubuntu 14.04 a bunch of hardware isn't recognized anymore. I use a dual monitor setup with dvi-d and vga, but the vga screen isn't recognized anymore and the dvi-d monitor is recognized as "Built-in Display" while I'm not on a laptop. Also every device connected through usb isn't recognized anymore either. I have a keyboard with the blue round connector, which still works, so I can still log in though. The computer goes slower than usual and I have no idea what has happened. Can anybody point me in the direction I should start looking, because this is scary! I just checked and both the front and back sound connectors stopped working also :/ Edit: The devices connected through USB are recognized as they all show up using sudo lsusb, Ubuntu just doesn't let me use them anymore.

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• How to configure kubuntu for lightweight low-memory usage?

  - by augustin

  I just upgraded an old, secondary computer to the latest Kubuntu (10.10). It seems the effort was a bit too much for the hardware and one 512MB memory module died. I tried to take it away, clean the connectors, put it back several times, but to no avail. Until such a time I can find a second hand DDR memory module, I am left with a meagre 256MB RAM, which is below the official requirements (384MB) to run Kubuntu/KDE. Indeed: the computer constantly swaps the memory, making everything painfully slow. Since Kubuntu is already installed and I use it on all my computers (and I want to keep KDE for when I really need it), how can I configure Kubuntu to squeeze out every bit of unnecessary memory usage? This is a secondary computer but still very useful. We use it mostly for web browsing. A "lightweight" tag is missing.

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• gtk_widget_grab_focus() jumping to next field automatically?

  - by Ravi Raj

  I am creating a 'C' project with glade and gtk. I want a focus on a gtkentry field naming txt_abc and so I called the function: gtk_widget_grab_focus (txt_abc); There is another gtkentry widget just after txt_abc widget naming txt_def. My problem is instead of getting focus on txt_abc widget, the cursor is automatically being focused on txt_def widget, when I am running the application. One more thing, when I am setting the focus at txt_def widget by calling the code: gtk_widget_grab_focus (txt_def); the control is again being focused on the next widget on the window, i.e. txt_name. I want the focus exactly on the widget I am setting the grab signal. How to resolve this problem.

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• Checking For Empty Enumerations

  While spelunking in some code recently I saw a method that looked something like this: public void Foo<T>(IEnumerable<T> items) { if(items == null || items.Count() == 0) { // Warn about emptiness } } This method accepts a generic enumeration and then proceeds to check if the enumeration is null or empty. Do you see the potential problem with this code? Ill give you a hint, its this line: items.Count() == 0 Whats the problem? Well that line right there has the potential...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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• Slow internet connection with a Digicom Wireless 11n 300m (rt2800)

  - by beboka8

  After upgrading to ubuntu 11.10 the speed of my internet connection has considerably reduced. I surf on internet using a wireless usb adapter Digicom Wireless 11n 300m which works with rt2800usb driver. The fact is, on the installation cd there's no tracks of that driver but instead of it there is another one called rt2870 which I tried to load using ndiswraper, but it did not recognize any hardware. I'm not sure the solution of my problem is simply changing the driver, but I have no other ideas. Can anyone help me?

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• My webcam stopped working, how do I fix it?

  - by Delilah

  I'm using Ubuntu 10.10 on a new Compaq Presario CQ56. The webcam was working fine for the first two days, in both Skype and Cheese, but simply turned black with thin vertical lines in the middle of a Skype call and now refuses to work in any program, including gstreamer-properties, Cheese, and VLC. It gives a black screen when rebooted into a live CD and tested. When tested, it either shows a plain black screen or black with thin vertical lines. Attached is an image of the video shown (it is static, there is no noise or static, and no response to variance in light). Also, when I play music or sounds, it makes a garbled noise related to the sound being played, which may or may not be connected to the webcam issue. If anyone has any ideas on what caused this, or whether it's a hardware or software issue, or how to fix it, I would appreciate them very much, Thanks

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• I can't log into my ubuntu 12.04

  - by user292674

  When I try to log in on my Ubuntu 12.04 it goes to a black screen ( of logging in checking stuff ), and says Checking battery ----- [ok] ( I'm using a computer instead of a laptop ) and just goes back to the login screen. Two days before I executed the command sudo startx trying to start KDE, but it didn't work. And after logging off and trying to log in again, I had this problem. A big problem is that I don't have internet connection at home. What should I do?

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• Unable to start ubuntu

  - by Ray

  Need your help here: I'm unable to start Wbuntu in my laptop. I'm sharing ubuntu with Windows 7 in my laptop, and after I install Ubuntu when I boot my laptop and choose ubuntu as my operating system the following error appears: Windows failed to start. A recent hardware or software change might be the cause. To fix the problem: Insert your windows installation disc and restart your computer Choose your language settings, and then click "Next." Click "Repair your computer." If you do not have this disc, contact your system administrator or computer manufacturer for assistance. File: \ubuntu\winboot\wubildr.mbr Status: 0xc0000098 Info: The selected entry could not be loaded because the application is missing or corrupt. Any ideas?

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• grub-install dummy fails. this is a fatal error

  - by user287764

  I am new to this but I have watched many video how to dual boot Ubuntu with windows 8. I have HP pavilion g6 notebook with 4 GB RAM and Intel i5 processor. I am installing Ubuntu 13.10 with windows 8. In the process of installation I select something else then make some partion as mentioned here. /dev/sda6. 2048 mb of swap area /dev/sda7. 18 GB of / And then I click on install. When installation starts it stuck when grub is installing And message arose as grub install dummy fails. This is a fatal error. I have searched about this on Google many others have faced same problem but none of them helped me. I think the problem is of uefi system. Is there any way so I can dual boot Ubuntu with windows 8.

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• Mobile traffic of my second site redirected to my base site [Edited,have a look]

  - by Faheem Rasheed

  I have a strange issue with my website and it seems i am unable to understand what cauese the problem.I would highly appreciate your help.The Scenario is I have two websites. Website A Website B Website A is simply hosted within the root directory of my hosting account.Within this root *directory* i have a sub folder " subfolder A " and within which is another subfolder " subfolder B " that contains my site Website B so the path looks like root/sublfolder_A/subfolder_B/ that contains my **Website B ( i.e subfolder_B) ** All goes fine.When i access the website B from my desktop/Laptop Website B is loaded normally. but when i access the Website through a mobile device , mobile site of Website A is loaded while as it should load website_B Also , to let you know , both websites have different URL's and not subdomain's or anything. What could be the problem ? htaccess of website B or website A ? or something else ? Here is the htaccess of my website B RewriteEngine On RewriteRule .* index.php [F] RewriteBase / RewriteRule .* - [E=HTTP_AUTHORIZATION:%{HTTP:Authorization}] RewriteCond %{REQUEST_URI} /component/|(/[^.]*|\.(php|html?|feed|pdf|vcf|raw))$ [NC] RewriteCond %{REQUEST_FILENAME} !-f RewriteCond %{REQUEST_FILENAME} !-d RewriteRule .* index.php [L]

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• Particles are not moving correctly [closed]

  - by cr33p

  I want to make a particle explosion, after something gets destroyed, but somehow only one line of mixed colors show up on the screen. Here's the header: http://pastebin.com/JW5bPLj2 Here's the source: http://pastebin.com/KHmFqytD I don't get what's wrong, as it's nearly the same as in "Programming Linux Games" Can somebody help me fix that? PS: "Uint32 delta" is needed to update the pixels based on time. PSS: Maybe I should add that it's programmed in C and includes SDL. EDIT: Found the problem. It was the "drawParticles" function. The problem was, that I passed a double to "offset" (as particles[i].x, etc are all doubles). So I ended up with values like ~MAX_INT because I didn't cast the doubles properly to ints.

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• How to create a Request Specific Thread Safe Static int Counter?

  - by user960567

  In one of my server application I have a class that look like, class A { static int _value = 0; void DoSomething() { // a request start here _value = 0; _value++; // a request end here } // This method can be called many time during request void SomeAsyncMethods() { _value++; } } The problem is SomeAsyncMethods is async. Can be called many times. What I need when a request start set _value = 0 and then asynchrosnously increment this. After end of request I need the total. But the problem is that another request at the same time can access the class.

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• Steam not opening or responding at all

  - by user109409

  The steam client won't open nor does it display any error message. I have tried right click > Games. I ran steam steam://open/games command, but the client just does not respond. Removing it with apt-get remove steam, deleting the Steam directory & the .deb file and reinstalling it, did not work either. This problem only occurred after I used killall steam.sh to force quit it, it was working fine before. I'm running 12.10 on a 64bit laptop with no additional drivers installed. Anyone else have this problem and a possible workaround? Thank you

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• Upgrade Ubuntu 12.04 to 12.10 failed

  - by pre-commit-hook

  I've a problem. Upgrade failed after "Setting new software channels", when Calculating changes. I tried error: Not all updates can be installed An unresolvable problem occurred while calculating the upgrade: E:Unable to correct problems, you have held broken packages. This can be caused by: * Upgrading to a pre-release version of Ubuntu * Running the current pre-release version of Ubuntu * Unofficial software packages not provided by Ubuntu If none of this applies, then please report this bug using the command 'ubuntu-bug ubuntu-release-upgrader-core' in a terminal. Now i have 1580 packages to update and do not update. Partial system upgrade also fails in the first step. What next? Alternatively, to undo the changes? Thank's to help.

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• Compiz features stopped working when an external monitor is attached

  - by adjfac

  Running 12.04 on a thinkpad T520 with nVidia NVIDIA Quadro NVS 4200M graphics. Just updated to the lasted nvidia 310 driver. Everything works great. However, as soon as I attached an external monitor using nvidia twinview, compiz features such as scale (moves all the active windows in one page) stopped working, as well as alt-tab to list all opened programs. Any ideas how i can fix this? never had this problem with 11.04. I can post my xorg.conf if that's of use to you. Thanks much! edit 1: I am using gnome3 classic edit 2: alt-tab works -- compiz application switcher (by default for gnome3 / unity) will crash gnome-classic, by changing to "static application switcher" in compiz seemed to solve the problem, but the scale still does not work when an external monitor is attached.

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• Why I can't open folders copied from Ubuntu on Windows?

  - by user37805

  Is not possible for me to open whatever folder I copy from Ubuntu to my Windows partition or whatever usb memory. Windows says the folder's location is either disconnected or doesn't exist. Can't copy, cut or delete the folder on Windows but with Ubuntu I can. This happens even if I create the folder on the ntfs disc. I have never had this problem before. Files are openable however, but not if they are inside a folder. This started after I haven't made any other changes except for the update to kernel 3.2.0-30-generic, I am using 12.04, never installed Samba, after this problem started I tried to fix it by installing ntfs-3f, ntfsprogs, ntfs-config, but It didn't work.

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• WiFi on Ubuntu 12.04 custom: downloading unbearably slow

  - by Mark

  iwconfig reports 11 Mbps, yet I've seen as low as <1 KBps. This is the latest in my laundry list of Ubuntu problems in a dual-boot machine (cyberpowerpc custom, intel i7-3820, nvidia gtx 570). I received it two days ago, Windows 7 running fine, still having problems with Ubuntu. The browsing is intermittent but unacceptable. e.g. I could get to this site last night but I couldn't post this question. The downloading is unbearably slow, I can't download anything or install any packages because the speed is so slow. e.g. I am trying to install vim which is inexplicably missing from my 12.04 install (add another one to the problems list) and my download speed reported in the terminal was 241 B/s. Yes, bytes. iwconfig reports 11 Mbps, which further adds to the confusion. User@ubuntu:~$ iwconfig lo no wireless extensions. wlan0 IEEE 802.11bgn ESSID:"linksys" Mode:Managed Frequency:2.437 GHz Access Point: 00:18:39:76:2C:A1 Bit Rate=11 Mb/s Tx-Power=20 dBm Retry long limit:7 RTS thr:off Fragment thr:off Power Management:off Link Quality=36/70 Signal level=-74 dBm Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 Tx excessive retries:54 Invalid misc:18 Missed beacon:0 eth0 no wireless extensions. Any ideas? I see this is a problem a lot of people, but none of the on line solutions have worked for me so far. e.g. one site recommends editing the ath9k.conf file in /etc/modprobe.d, yet this file isn't even in the folder: User@ubuntu:/$ cd etc/modprobe.d User@ubuntu:/etc/modprobe.d$ ls alsa-base.conf blacklist-oss.conf blacklist-ath_pci.conf blacklist-rare-network.conf blacklist.conf blacklist-watchdog.conf blacklist-firewire.conf dkms.conf blacklist-framebuffer.conf nvidia-current_hybrid.conf blacklist-modem.conf nvidia-graphics-drivers.conf I think the nvidia gpu might be mucking things up. I had the "blinking cursor" problem when installing in the first place, and then I had the monitor out of range problem as well. I have my faithful Asus laptop, which is running Ubuntu 12.04 just fine. The only difference is executing host -t SOA local in the terminal gives User@ubuntu:~$ host -t SOA local local has SOA record local. nobody.localhost. 42 86400 43200 604800 10800 in my new machine, and the command reports Host local. not found in the laptop. Help would be most welcome, as I am in danger of reverting back to Windows. I'm seriously considering it. Sorry for the length, trying to show my effort in resolving the issue and include terminal snippets that might be helpful.

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• Samsung NC10 Broadcom difficulties

  - by simonp

  I am new to Ubuntu/Linux and am stuck already! Any help much appreciated. I have managed to install Ubuntu Maverick 10.10 (from a USB flash drive) on my NC10 which also has Windows 7 on the partitioned drive. But the wireless internet is not working. I have identified the hardware as a Broadcom BCM4313. I have also managed to find that the correct driver is installed (Modaliases for Broadcom 802.11 Linux STA driver). I have followed advice from elsewhere and there does not seem to be any competition from other drivers. I am now stuck and do not have any other internet access on this netbook. Any ideas?

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• 2 Google Tag Manager containers = double triggers?

  - by fred

  I have a Joomla website with existing analytics done by a GTM tag and I need to add another image tag (1x1 pixel) from a separate GTM container. I set the event name for the additional GTM container to a different name from from the existing GTM container (default 'gtm.js') so that the new tag only fires under the specified event. The new container tested out fine in a blank HTML page, but when it is put in the website, it ends up firing twice. I know that because Firebug showed 2 1x1 pixels being loaded and I mark each request with a randomly-generated UID to distinguish them on the server side. I suspect this being caused by having multiple GTM container tags but want to check whether anyone has run into this problem before? As of now, I could not verify nor fix the double counting problem.

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• IPv6, isn't it just a few extra bits?

  - by rclewis

  It's always an interesting task, to try and explain what you do to family and friends. I have described IPv6 as the "Next Generation Internet"  or "Second Internet" but the hollow expressions on my kids faces scream for the instant relief of the latest video game.  Never one to give up easily, I have formulated a new example - the Post Office... Similar to the Post Office the Internet delivers mail and packages based on addresses. As the number of residences, businesses, and delivery locations increased, the 5 digit ZIP Code (Washington, DC 20005) was expanded to ZIP+4  allowing for more precise delivery points (Postmaster General, Washington, DC 20260-3100). Ah, if only computers were as simple.  IPv6 isn't an add-on or expansion of the existing IPv4 Addressing, it is a new addressing model which will allow the internet to grow from a single computer in the basement of a university or your parents kitchen table, to support the multitude of smart phones, smart TV's, tablets, dvr's, and disk players, all clambering to connect for information. Unfortunetly there are only a finite number of IPv4 public addresses left, and those are being consumed at an ever increasing rate. Few people could have predicted the explosive growth of the internet or the shortage of IPv4 addresses we now face - but there is a "Plan B" and that is the vastly larger address space of IPv6.  Many in the industry have labeled this a "business continuity" problem,  when in fact most companies will be able to continue conducting business once they run out of existing IPv4 Addresses. The problem is really a Customer Continuity problem, how will businesses communicate with existing customers and reach new customers online who's only option is to adopt IPv6 when IPv4 is depleted? Perhaps a first step is publishing a blog that is also accessible via IPv6, it's just a few extra bits. Join us for the Oracle OpenWorld 2012 Session:   Navigating IPv6 @ Oracle Thursday, Oct. 4th 2:15PM - 3:15PM  Palace Hotel - Concert   Learn more about IPv6 Technologies at Oracle

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