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• does anyone know why apt-cacher-ng always downloading index file (Packages.gz) even though its exist on the apt-cacher-ng's cache?

  - by soekarmana

  just updated from 11.04 to 12.04, fresh install installed apt-cacher-ng and notice something strange about it its always downloading index file (Packages.gz) even though the file exist on the apt-cacher-ng's cache, so this is what exactly happened : on ubuntu 10.10 & 11.04 apt-cacher-ng installed & configured on my laptop, then i reload & install some packages after that i configure my friend's laptop with apt-cacher-ng proxy (192.168.1.1:3142), reloading repository was blazingly fast, finished in a second without using my Internet connection (checked on system monitor, total Received just 15kB) on ubuntu 11.10 & 12.04 apt-cacher-ng installed & configured on my laptop, then i reload & install some packages after that i configure my friend's laptop with apt-cacher-ng proxy (192.168.1.1:3142), reloading repository was really slow!, apt-cacher-ng redownload the index file from internet

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• Wifi won't work without ethernet (Ubuntu 12.04)

  - by alok

  I have a strange problem. I am running Ubuntu 12.04 on a Dell Studio 1558 laptop. I'm usually unable to access Wifi (I have a BCM43224 wireless card with the STA proprietary driver installed.) So I have to unplug the ethernet cable from my Wifi router and stick it into my laptop's ethernet port to access the Internet. But when I stick the cable back into the Wifi router and try connecting to Wifi, Wifi inexplicably starts working. How can I get Wifi to work all the time without having to 'jumpstart' it with an ethernet connection?

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• How does timeseal work? [on hold]

  - by Simon Meyer

  I know the the fics (free internet chess server: www.freechess.org/) does use a program called timeseal to measure the time that a user needed to take a move. This timeseal is some time measurement on the client. Measuring on the client is much better and fairer than measuring the time on the server since you don't lose time just by having a bad connection. But since fics has a lot of interfaces to play on - what prevents rogue interfaces to say that they always only used 0.1 seconds for any move? Does anyone know how this is handled? Just a sidenote: i don't want to build a rogue interface, but i'm trying to build something similar that is measuing client side time but should not be easy to cheat on.

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• Creating an encrypted, web-based proxy

  - by Jason

  I have moved to Asia where my internet connection is censored and I'd like to check my messages from social sites which happen to be blocked. As virtually all proxy servers are blocked in this country, I've decided to attempt to roll my own encrypted proxy server. Please note, the key word here is encrypted—if the sniffer sees anything like f@c3b00k or w:k:p3d:ia travelling down the wire I'm had. I have a website hosted with GoDaddy (Windows with PHP 5.2 & IIS 7). Is there any way I can set up an encrypted proxy through this service? If so, how, and what open source tools are available to use?

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• I have 20 Ubuntu 12.04 LTS machines Some are unable to network with other machines , they all have same workgroup viz. Ubuntu

  - by Gaurang Agrawal

  During installation I updated my workgroup to "Workgroup" , after installation I changed it to ubuntu as I was unable to access computers in network . What changes do I need to make in samba configuration ? I don't know if this is related , shared@shared:~$ testparm Load smb config files from /etc/samba/smb.conf rlimit_max: increasing rlimit_max (1024) to minimum Windows limit (16384) Processing section "[printers]" Processing section "[print$]" Loaded services file OK. Server role: ROLE_STANDALONE Press enter to see a dump of your service definitions [global] workgroup = UBUNTU server string = %h server (Samba, Ubuntu) encrypt passwords = No map to guest = Bad User obey pam restrictions = Yes pam password change = Yes passwd program = /usr/bin/passwd %u passwd chat = Enter\snew\s\spassword:* %n\n Retype\snew\s\spassword:* %n\n password\supdated\ssuccessfully . username map = /etc/samba/smbusers unix password sync = Yes syslog = 0 log file = /var/log/samba/log.%m max log size = 1000 name resolve order = bcast host dns proxy = No usershare allow guests = Yes panic action = /usr/share/samba/panic-action %d idmap config * : backend = tdb [printers] comment = All Printers path = /var/spool/samba create mask = 0700 printable = Yes print ok = Yes browseable = No [print$] comment = Printer Drivers path = /var/lib/samba/printers smbclient -L 192.168.1.108 Enter shared's password: Connection to 192.168.1.108 failed (Error NT_STATUS_HOST_UNREACHABLE)

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• How can I recover from a frozen app when connecting over VNC

  - by Pablojim

  I have a htpc running 10.10. It has no keyboard or mouse attached, so I connect over vnc for administration and manual tasks. This usually works fine but every so often an app running in fullscreen mode crashes. All I want to be able to do is kill this app from VNC. Is there a keyboard shortcut to do this that will preserve the VNC connection? If I use CTRL + ALT + F1, I see the terminal but can no longer control it from VNC. Trying to return to the desktop doesn't work either? Any easy process I can follow?

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• One True Event Loop

  - by CyberShadow

  Simple programs that collect data from only one system need only one event loop. For example, Windows applications have the message loop, POSIX network programs usually have a select/epoll/etc. loop at their core, pure SDL games use SDL's event loop. But what if you need to collect events from several subsystems? Such as an SDL game which doesn't use SDL_net for networking. I can think of several solutions: Polling (ugh) Put each event loop in its own thread, and: Send messages to the main thread, which collects and processes the events, or Place the event-processing code of each thread in a critical section, so that the threads can wait for events asynchronously but process them synchronously Choose one subsystem for the main event loop, and pass events from other subsystems via that subsystem as custom messages (for example, the Windows message loop and custom messages, or a socket select() loop and passing events via a loopback connection). Option 2.1 is more interesting on platforms where message-passing is a well-developed threading primitive (e.g. in the D programming language), but 2.2 looks like the best option to me.

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• Cisco AnyConnect VPN Client broke my internet

  - by user137864

  I was using the AnyConnect client when it froze and I had to do a hard reboot of my computer. Now I can't connect to the internet at all, with or without VPN. The Network Connections manager seems to think I have a wired and wireless connection without a problem, but I can't go online. I have tried using /etc/init.d/networking restart and it even says it is "ok" with no luck. I am guessing I need to clear some settings somewhere and restart a service, but I am not sure what. Thanks!

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• Network does not connect at boot

  - by Daniel Svozil

  I am on Ubuntu 12.04, fresh install. When I boot a machine, the boot screen says Connecting to network, later it is changed to something like Did not connect, trying for another 60s. However, the network does not connect at the boot. But I can then log in without a network connection, and if I start a network manager service manually from the terminal (sudo service network-manager start), the network is connected without any problems. Please, does anybody know where the problem could be? I don't want to wait more than two minutes every computer restart :-). I am new to Ubuntu (and also to upstart) so I am a bit lost. There is no /var/log/messages, in dmesg I found this record, though it may not be related: init: network-interface (eth1) pre-start process (492) terminated with status 1 init: network-interface (eth1) post-stop process (548) terminated with status 1 Thanks Daniel

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• Leaked Gmail for Android Version 4.2 Features Pinch-to-Zoom and Swipe-to-Delete [Video]

  - by Jason Fitzpatrick

  If you love keeping an eye at what’s around the corner, this video showcases some of the new features in Gmail for Android–there’s even an APK for those adventurous readers who want to try it. Courtesy of AndroidPolice, we’re treated to the above video showcasing Gmail for Android’s new look and features–including pinch-to-zoom and a swipe-to-delete (or archive), similar to the notification dismissal in Android Jelly Bean. If you’re up for a little unofficial app installation, you can even hit up the link below to check out the full writeup and grab a copy of the unofficial installer. Exclusive: Upcoming Gmail For Android 4.2 Will Finally Have Pinch-To-Zoom, Swipeaway Delete/Archive [AndroidZoom] HTG Explains: What is the Windows Page File and Should You Disable It? How To Get a Better Wireless Signal and Reduce Wireless Network Interference How To Troubleshoot Internet Connection Problems

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• Ubuntu gone out of order - Wont install any packages. What do I do?

  - by Aborted

  Lately, I've been getting some strange behaviour from Ubuntu. First and the most important is that it wont install updates. It gives a package installation error and it simply wont work. Earlier I tried to install TeamViewer via the Software Center, but got the same package error. I also feel like the connection speed is going slower than it should - don't know if this one is relevant to this case. What's wrong with my installation? How do I fix these package installation errors?

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• Ubuntu 12.10 over Ubuntu 11.10 seems to hang

  - by Angela Trapp

  My installation of Ubuntu 12.10 over Ubuntu 11.10 seems to hang on "saving installed packages". How long should I wait before knowing for sure that something is wrong? I stopped it once and tried re-installing but am getting the same results. I'm installing from a USB stick. I'm connected to the internet using a wired connection but I'm reading here to connect to a wi-fi network while installing. Could this possibly be the issue? I can't install using wi-fi at the moment as my router was fried in a brownout yesterday. I've ordered another router online so as soon as it gets in, I'll try again. Any suggestions are appreciated! Please let me know if you need more information. It's a 32-bit installation and I have 1 GB of memory. Thanks!

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• Migrating an Existing ASP.NET App to run on Windows Azure

  - by kaleidoscope

  Converting Existing ASP.NET application in to Windows Azure Method 1:  1. Add a Windows Azure Cloud Service to the existing solution                         2. Add WebRole Project in solution and select Existing Asp.Net project in it. Method 2: The other option would have been to create a new Cloud Service project and add the ASP.NET project (which you want to deploy on Azure) to it using -                    1. Solution | Add | Existing Project                    2. Add | Web Role Project in solution Converting Sql server database to SQL Azure - Step 1: Migrate the <Existing Application>.MDF Step 2: Migrate the ASP.NET providers Step 3: Change the connection strings More details can be found at http://blogs.msdn.com/jnak/archive/2010/02/08/migrating-an-existing-asp-net-app-to-run-on-windows-azure.aspx   Ritesh, D

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• SQL Auto Close Options

  - by Dave Noderer

  Found an interesting thing that others have run across but it is the first time I’ve seen it. A customer emailed to say that the SQL 2008 db that I had helped him with seemed to be going into recovery mode on a regular basis while watching the SQL Management Studio screen. Needless to say he was a bit nervous and about to take some drastic steps. Eventually he found that the Auto Close option was set to true. When this is set to true, the database automatically closes all connections and unlocks the mdf file after 300 milliseconds. When a new connection is made it spins backup… Great for xcopy deployment on a client machine but not a multi-user server based application. So the warning… if you have started a database with SQL express and then move it to a production SQL server, make sure you check that the Auto Close option is set to false. See options screen below:

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• Unity Launcher and Menu Bar disappeared in 14.04

  - by Justice2497

  The menu bar and Unity launcher have disappeared in Ubuntu 14.04. Also cannot access the terminal via ctrl + alt + t. I have tried every solution for this issue that I can find, from re-installing untiy and compiz to resetting Unity and everything. I've gone into the compiz manager and reactived Unity. Nothing has worked. When trying to reset Unity, or do anything with it really, I get this message (process:6332): dconf-WARNING **: failed to commit changes to dconf: Could not connect: Connection refused EDIT: Installed 14.04 a day ago. The issue happened after a reboot. After installing virtual Box

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• Gmail address book in Evolution does not work

  - by wouter205

  I added my Gmail address book to evolution, but it gives my an error every time, even when choosing "use secure connection" in the address book options. The error is (I translated it on my own): unable to open address book. This is because you entered a wrong URI or the server is unavailable at the moment. Details: cannot open book: source already loaded! Sometimes, when I click the button 'reject error', it does load the address book but when I return to evolution after a while, it gives me the same error and sometimes I cannot load the address book. This is very annoying since I have to use evolution a lot.

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• Cisco Linksys AE2500 wireless adapter not working

  - by makuto

  I have a Cisco AE2500 I've used with my laptop to get internet. I had to install the drivers by following this forum: http://ubuntuforums.org/showthread.php?t=1805830 But now the blue light on the adapter doesn't turn on at all, but ndiswrapper reports it is connected. I have no connection to the internet on my laptop, and the adapter doesn't show it's blue light on any of the USB ports of my computer or on the 4 port hub I have. Is there some way I can reset something so that the blue light will show again? I'm using Ubuntu 11.10 on a Dell Latitude D505 laptop. EDIT: I deleted and reinstalled the same exact driver and everything worked again.

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• Cannot Update through Manager or Terminal/ Software Center Does Not Work

  - by BROBA

  I installed Tor a few days ago via the terminal. I deleted some hashtags in the gedit polipo, and changed my proxy settings in chrome, but was unable to make it work and have since changed all of it back. I then downloaded the Tor browser bundle which works great, but ever since then have been unable to download updates or new software. The update manager says to "check internet connection" and the software center displays a mostly blank screen under apps like "rhythmbox" and just says "available from main source" when I click on "use this source" a refresh symbol appears on the upper right corner of the software center for a split second, and then nothing happens. The app does not download and isn't available in the dash. When I try via the terminal it says it's unable to connect to my ip address. I tried changing the server and unchecking all the repository options for software sources, all to no avail. WHAT DID I DO?????

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• Change libcups to repository version

  - by Lerp

  I upgraded my libcups package to 1.6 in hopes to fix something but I just buggered things up more. So I want to reinstall it to the version on the repository (1.5.3 I think). I've tried to do a reinstall using ~#: apt-get install --reinstall libcups2 but that tells me it cannot be downloaded so refuses to upgrade. I can't just do: ~#: apt-get remove libcups2 ~#: apt-get install libcups2 as that wants to remove 299 packages along with it. Totaling 668MB so I am hesitant as that will probably take 6 hours to download on my connection.

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• How to download streaming video from a flash player (arte)?

  - by wim

  there are a couple of concerts that I would very much like to view from Arte (I think it's a french TV channel?) but my connection is not good enough to stream the video. How can I download the file to play it locally? Here is an example link: http://www.my-jazzlive.tv/?p=1862 I have tried popular browser plugins such as DownloadHelper and Flash Video Downloader, these are working fine for me on sites such as youtube but they don't seem to recognise any stream from the Arte video player. I also looked through /tmp for something that looks like a partially downloaded video, but no luck.

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• Errors when attempting to install vim on Ubuntu 12.04

  - by Anup

  I have installed Ubuntu 12.04 in my computer few days back. from then i tried to install few programs through Ubuntu software center but it showed that no internet connection even though i was connected to internet. Then i came to know that vi editor will be required to set the system configuration in which i will be able to save my password and proxy. apart from that i also tried to install the programs through terminal but still same problem occurred as it says this is not a candidate for install. i tried to install Vim using command sudo apt-get instal Vim-nox but it shows that broken package and showed many failures. please help me out of this.... thank you

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• Algorithm for perfect non-binary graph layout

  - by mariki

  I have a complex non-binary graph model. Each tree node can have multiple children&parents (a node can also have a connection to it's "brother"). A node is represented as square on screen with lines to the connected nodes. For that I want to use Draw2D and GEF libraries. The problem I am facing is the graph layout. I need a nice algorithm that can reposition the square nodes and the connections with minimum intersections and also make it symmetric as possible.

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• 12.04's music players won't stream radio stations

  - by Jason

  I cannot get any music player in 12.04 to stream radio stations. My previous OS (ubuntu 10.04) had no problems with this. I have tried Rhythmbox and Exaile. neither works in 12.04 (but both work fine in 10.04. I inputted this stream: http://ummedia12.rs.itd.umich.edu:8004 I see that an internet connection is established by "Python" and I hear the "Advertisement" that plays right before the stream begins. But then just silence. The stream works fine in VLC, but I like to use the music players because they "store" the URL and have a tab that says Radio. I can find no way to "store" the URL in VLC. Anyone know what's wrong and why it's not working in the music players? I have fluendo plugins installed. I have python installed. I have ffmpeg installed.

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• How to completely remove wicd from 12.04?

  - by danijelc

  I had issues with WiFi so I removed Network Manager. I booted Windows OS (dual booting Windows 7 and 12.04) to download wicd 1.7.2.4. Extracted it and installed. However, wcid worked properly with Wired Connection but could not connect to WiFi. So, I re-installed Network Manager which works properly now, and wicd connects to WiFi too. As soon as I disconnect from Network Manager, wicd connects only to wired. At this point, I wanted to remove wicd but apt-get returns no wicd installed, can't see it in Synaptic or Software Center, but only in Applications list under Dash home. Of course wcid icon shows connections, and resulting connected, so my system shows both applets for wicd and network manager in the top panel. When running dpkg commands, wicd is not listed as installed package. Any suggestion how to remove wicd? Consider that I started with Ubuntu just few months ago so my knowledge base is limited.

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• Boot problem with Ubuntu 11.10

  - by leonard

  So, I am an Ubuntu newbie, and I don't know a thing about it. I tried to install restricted extras (am I using it right?) through terminal, but it seems I failed :) maybe because during installation the internet connection crashed... anyway, I restarted and I got the Ubuntu intro screen at the boot, and then a black screen appeared with this information: checking battery state I restarted and it showed something else, so I rebooted for 5 times. Then a screen appeared *starting bluetooth *pulseaudio configured for per-user sessions saned disabled; edit /etc/default/saned I tried this: My fresh installation doesn't load. (PulseAudio problem) but didn't know how to save so I just skipped to update-grub, anyway nothing helped. What do I do?

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