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  • Rhythmbox plugin code for hot key not working - why?

    - by Bunny Rabbit
    def activate(self,shell): self.shell = shell self.copy_selected() self.action = gtk.Action ('foo','bar','baz',None) self.activate_id = self.action.connect ('activate', self.call_bk_fn,self.shell) self.action_group = gtk.ActionGroup ('hot_key_action_group') self.action_group.add_action_with_accel (self.action, "<control>E") uim = shell.get_ui_manager () uim.insert_action_group (self.action_group, 0) uim.ensure_update () def call_bk_fn(): print('hello world') I am using the above code in a plugin for Rhythmbox and here I am trying to register the key Ctrl+E so that the call_bk_fn gets called whenever the key combination is pressed but its not working. Why is that so ?

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  • Why am I getting such slow file transfer performance?

    - by kingdango
    Copying 4GB from a USB flash drive to my Linux partition. The flash drive is NTFS formatted (I believe, it's Windows formatted). The transfer is incredibly slow and blocks the computer frequently causing lag and hanging applications. My transfer rate is 1.2 MB/sec and that is the max it has hit when I let the File Operations window have focus. Why is this so slow under Ubuntu and significantly faster in Win 7?

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  • Why my sub-domain redirect returns a blank page?

    - by Tom Brito
    I have the domain http://dropbox.tombrito.com/ (on GoDaddy) forwarding with masking to www.dropbox.com/sh/k6ypvx4y4kf0gu6/rdjxQ1b1OL It was working fine some time ago, but now the result is a blank page (although the Dropbox's favicon appears correctly in the browser's tab title). The DNS manager shows me a single entry with the name "dropbox": A dropbox 64.202.189.170 Any idea what's wrong? Related: Why my domain redirect on Google Apps is returning 404?

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  • Why Are We Still Using CPUs Instead of GPUs?

    - by Jason Fitzpatrick
    Increasingly GPUs are being used for non-graphical tasks like risk computations, fluid dynamics calculations, and seismic analysis. What’s to stop us from adopting GPU-driven devices? Today’s Question & Answer session comes to us courtesy of SuperUser—a subdivision of Stack Exchange, a community-drive grouping of Q&A web sites. 6 Ways Windows 8 Is More Secure Than Windows 7 HTG Explains: Why It’s Good That Your Computer’s RAM Is Full 10 Awesome Improvements For Desktop Users in Windows 8

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  • Why is the error, dd: /dev/rdisk1bs=1m: Operation not supported, popping up while trying to instal ubuntu on usb?

    - by Jesse S
    I am trying to install ubuntu onto my flash drive using the instructions from the website, http://www.ubuntu.com/download/help/create-a-usb-stick-on-mac-osx , and after step 8, the terminal asks for my password, which it accepts and then pops u this error message, dd: /dev/rdisk1bs=1m: Operation not supported. I have also tried making the last m in that statement capital and then the system does not ask me for my password but the error message still pops up. What is happening and why?

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  • Why the cryptographic key was not provided at ubuntu 12.04 first run?

    - by user64720
    So I installed Ubuntu 12.04 a few days ago and strangely I missed the part where we choose to encrypt home folder. However I already ran the commands on this question (How to check if your home folder and swap partition are encrypted using terminal?) to check if home folder and swap partition are encrypted and they are. So why is that Ubuntu did not provide me the cryptographic key the same way it happened when I installed Ubuntu 11.04???

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  • Why lambdas seem broken in multithreaded environments (or how closures in C# works).

    Ive been playing around with some code for.NET 3.5 to enable us to split big operations into small parallel tasks. During this work I was reminded why Resharper has the Access to modified closure warning. This warning tells us about a inconsistency in handling the Immutable loop variable created in a foreach loop when lambdas [...]...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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  • Why hasn't C# gained much traction within the opensource community?

    - by tmitchel2
    I'm not expecting C# to be on par with say Java or Python in the open source community, but it still surprises me just how far behind it is. 'Multi language' open source repos like google code or github have barely any C# projects in comparison to the other languages I mentioned. I'd like to see C# and .Net shake off that slight corporate feel and move more into the open source arena but I just can't see that happening. I'd be interested to hear peoples opinion on why this might be?

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  • What's your main development operating system? Why? [closed]

    - by Anto
    What do you use as your main operating system for developing software (you might use another for testing, gaming, entertainment etc.), and most importantly, why? To speak for myself, I use Ubuntu and Kubuntu (it varies between those two Linux distributions), because it is easy to get stuff done with, has all the development tools I need, is fast, stable and safe. And I think I would never make it without the UNIX utilities anymore.

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  • Why do some urls in Firefox change when copy / paste?

    - by user203748
    This may not be a Firefox / Ubuntu specific issue. When I Copy / Paste a web link with _ and ( ) it is rendered as %20, %28, and %29. Yet in the Firefox URL these % symbols do not appear. The %20 is particularly weird because the _ itself does render in the URL: https://www.capitalsecuritybank.com/en/PDF/CSB_%20Account_%20Application_%20Form_%20%28Personal%29.pdf Can anyone explain why the URL is different when Copied / Pasted?

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  • Why does the IIS_IUSRS user need read permission on the ApplicationHost.config file in my Exchange 2010 OWA environment?

    - by CrabbyAdmin
    Previously I was experiencing issues where users in my Exchange 2010 environment would periodically receive an error stating: The custom error module does not recognize this error. However, following the advice of a thread I read somewhere, I granted the computername\IIS_IUSRS user Read permissions on the ApplicationHost.config file in the OWA environment. After making this change, the problem has not yet resurfaced. However, I'm not satisfied to simply settle for the fix, I'd like to understand why it worked. So can somebody please tell me why does this user need read permissions on this file and why would that have resolved the issue?

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  • Why does this Robocopy command make files hidden and how can I unhide them?

    - by Brian Dant
    I am trying to make a backup to an external HD using Robocopy. I am wondering why it makes the destination directory hidden and subsequently why I can't unhide it? Note: I'm new to the Windows command line. This is the first command I have ever passed. The command I used is: Robocopy D:\ I:\destination-directory /E /R:0 /DCOPY:T The backup worked fine, but it made the destination directory hidden. Then I tried to unhide the directory with the following command: ATTRIB -H "I:\destination-directory" /S /D and the output is: Not resetting system file -- I:\destination-directory So, Why does this Robocopy command hide the destination directory? What can I do to unhide this directory? I would like to use the command line to do this.

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  • Why are hard drives moving to 4096 byte sectors, vs. 512 byte sectors?

    - by Chris W. Rea
    I've noticed that some Western Digital hard drives are now sporting 4K sectors, that is, the sectors are larger: 4096 bytes vs. the long-standing standard of 512 bytes. So: What's the big deal with 4K sectors? Is it marketing hype, or a real advantage? Why should somebody building a new PC care, or not, about 4K sectors? Why is this transition taking place now? Why didn't it happen sooner? Are there things to look out for when buying a 4K sector hard drive? e.g. incompatibility? Anything else we should know about 4K sectors?

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  • Why does a zip file appear larger than the source file especially when it is text?

    - by PeanutsMonkey
    I have a text file that is 19 bytes in size and having compressed the file using zip and 7zip, it appears to be larger. I had a read of the question on Why is a 7zipped file larger than the raw file? as well as Why doesn't ZIP Compression compress anything? but considering the file is not already compressed I would have expected further compression. Attached is a screenshot. EDIT0 I took the example further by creating a file that contained random data as follows dd if=/dev/urandom of=sample.log bs=1G count=1 and attempted to compress the file using both zip and 7zip however there were no compression gains. Why is that?

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  • 4K sectors transition: Why are hard drives moving to 4096 byte sectors, vs. 512 byte sectors?

    - by Chris W. Rea
    I've noticed that some Western Digital hard drives are now sporting 4K sectors, that is, the sectors are larger: 4096 bytes vs. the long-standing standard of 512 bytes. So: What's the big deal with 4K sectors? Is it marketing hype, or a real advantage? Why should somebody building a new PC care, or not, about 4K sectors? Why is this transition taking place now? Why didn't it happen sooner? Are there things to look out for when buying a 4K sector hard drive? e.g. incompatibility? Anything else we should know about 4K sectors?

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  • Why can't all zeros in the host portion of IP address be used for a host?

    - by Grezzo
    I know that if I have a network 83.23.159.0/24 then I have 254 usable host IP addresses because: 83.23.159.0 (in binary: host portion all zeros) is the subnet address 83.23.159.1-254 are host addresses 83.23.159.255 (in binary: host portion all ones) is the broadcast address I understand the use for a broadcast address, but I don't understand what the subnet address is ever used for. I can't see any reason that an IP packet's destination address would be set to the subnet address, so why does the subnet itself need an address if it is never going to be the endpoint for AN IP flow? To me it seems like a waste to not allow this address to be used as a host address. To summarise, my questions are: Is an IP packet's destination ever set to the subnet IP address? If yes, in what cases and why? If no, then why not free up that address for any host to use?

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