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• routing weirdness - traceroute 'vanishes' en route

  - by The Journeyman geek

  I'm attempting to set up one of my boxes as a server (again), but i'm having some odd connection issues- the box itself connects fine to the internet, but trying to connect to my external ip address seems to result in the trace getting 'lost' partway. http://pastebin.com/HCQAGbvn - this is a traceroute from another system that's connected to another ISP - starhub is my own one, while i have another system that i have access to on singtel. I'm wondering if my ISP is messing around with routing, or is something very odd going on. As you note, the traceroute dosen't reach me, but if it helps, i use a dd-wrt router. edit: Facepalmishly, turning the firewall on my router on and off fixed it. I don't get why it dropped off at different ip addresses each time, or why the router set it self to block.. everything, or why it affected the ipv6 tunnel as well.

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• Problem with Ctrl key on a hp 2510p

  - by Ernelli

  I have a tricky problem with my corporate Compaq hp 2510p, the ctrl key is not working properly at all times. I belive that it is hooked in some filter chain that processes certain ctrl+[key] combinations which is very annoying. I would like some pointers on how to proceed when analysing what application/setup can can cause this kind of keyboard filtering to happen. Anyway some more background info: Ctrl works together with X, C, V. Both in editors and terminals (Ctrl-C, Z etc) but Ctrl-Shift-Esc and Ctrl-Alt-Del does not work. Very annoying so my only option for logging in us using HP's security app. Shift-Arrow works for selecting text, but not Ctrl-shift arrow to select word by word, but Ctrl-Arrow works when moving the caret word by word. Now the strange thing is that everything works ok with an external USB keyboard so it might be the driver, but still, google yields 0 when searching for the problem description. I have vm-ware player installed (but not running it), HP Protect Tools installed, if any of these could affect the keyboard driver.

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• How do I PXE Boot Only when I want it to without user intervention?

  - by troz123

  I would like to setup a PXE environment where I can re-image machines remotely without any user intervention. Only problem is when the re-imaging is completed it will do the re-imaging again and again and again. If I remove the MAC address file then I just get a error saying it can't find the MAC address file and the system stops. I also tried turning off the TFTP server and I get a error stating can't find TFTPD server. How can I make client machines only PXE boot once and after the re-imaging it will boot into Windows and everything is happy? And only PXE boot when I want it too... I'm using TFTPD32 to serve the files. I'm using a Windows 2003 DHCP server that points to pxelinux.0...

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• Use a media player in Linux just to play files from an iPod device (no sync, no manage, just play)?

  - by Somebody still uses you MS-DOS

  I have an ipod classic 160gb, that I sync with my machine at home. I use Linux at work, and want to just plug my ipod and just listen to the tracks, with all the playlists and such. I don't want to sync nothing, I just want to listen to the tracks as if I was using the ipod itself. Why? Because this way I can use the usb port. So, I don't want to manage my ipod in Linux, I just want to listen to the tracks on it in Linux, like it was a local library but it's instead in my ipod. (I've tried gtkpod, it works to show my files, but I can't play, shuffle, etc. It would be interesting to have a complete audio software to handle everything like it was a local library)

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• netbook losing internet connection

  - by cometbill

  I have a netbook that occassionally, usually once or twice a day, maybe more, will lose its internet connection while I am on Skype (that's when I notice it most, it may happen more often). The little yellow dot appears over the networking icon in the system tray, which when I click on it says no internet access at the top of the popup menu, and next to the router connection that I have. Disconnecting and reconnecting usually rectifies full internet access again. I'm not sure if leaving it for any amount of time allows the netbook to automatically reconnect again. Everything seems fine with my laptop. I don't think this loses connection in the same way. I'm using Windows 7 home premium.

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• No audio in Google Chrome

  - by Z9iT

  I started with Ubuntu 12.04 Minimal. Then installed only 3 utils sudo apt-get install xorg xinit google-chrome-stable alsa-base alsa-utils alsa-oss I have added google-chrome to .xinitrc file. Used sudo alsamixer to unmute everything using M. Also I am able to hear sound when I run this independently in a terminal sudo aplay /usr/share/sounds/alsa/Front_Center.wav However Google Chrome is not giving any sound output be it on youtube or the same file (/usr/share/sounds/alsa/Front_Center.wav) opened by browsing in chrome. UPDATE : the moment i install some Desktop (display) Manager like gnome or lxde and launch chrome then, the audio is perfect success. However if i kill the xsession and the desktop manager (lxde) AND then start with loading only the chrome (without DM) then again i loose the sound. This makes me wonder that there is something which is not allowing the sound to be loaded into chrome directly, but once the session like lxde loads, then it works flawless. I am thinking that i should rather ask, how to authorize google-chrome to use sound software? Miscellaneous : I am surprised to know that I cannot start google-chrome by sudo command (it asks to be a normal user) && that i cannot start alsamixer as a normal user (i must use sudo alsamixer ) May someone please help what i need to do so that google chrome speaks????

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• Cygwin file and directory user and group

  - by dvanaria

  I use Cygwin as my main development environment on both my home and work computers. In order to share files between the two computers, I use Dropbox, which is installed in the following folder on both computers: c:\cygwin\home\dvanaria\dropbox Everything works great, except for one thing. When I'm working on my home computer and do an ls -l on any directory, all the files show up as owned by dvanaria of group Users. But when I work from my work computer, an ls -l shows all files as being owned by Administrators and of group Domain Users. I know Cygwin uses some kind of mapping between Windows users and permissions to the /etc/passwd file. But to be honest I have no idea how this file works or how it maps to Windows under Cygwin. Could anyone help figure this out? The main problem is that I can't edit any files when using my work computer, only read them.

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• Backup XAMPP (Htdocs & MySQL)

  - by Max

  I have a development server, but would like to backup everything at least daily to a remote location. I would like to backup the htdocs folder and the MySQL servers. But if possible also the settings of the server and anything else relevant. At the moment I am using DropBox for the htdocs, but this is not ideal. I have looked into Git, DropBox simple copy paste on a daily basis. I was wondering what any advice would be. For example how hard would it be to set it up as a cloud based system? Any and all advice is greatly appreciated.

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• Rebuilding RAID1 in Ubuntu

  - by John Utech

  I had my second HD in my RAID1 come up with bad sectors. So I got another drive and pulled out the bad sector drive and put the new drive in. With the original working RAID1 drive in the computer it failed to boot. I manually copied everything from the old drive over via a Gparted Live CD. Still no booting. Kind of scratching my head here as I can see that both of the drives have data on them but are unable to get either of them to boot. I used a Ubuntu live CD and couldn't even manually mount either of the drives, which I thought was really the odd part. Not sure where to go from here.

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• VoIP and IPv6 with IPsec

  - by PhilCisco

  Hi, I had some basic questions about VoIP in a IPv6 architecture, right now I'm running VoIP in a v4 architecture, and I was thinking about to change everything to v6. my questions are not that practical but I would like to understand it well. Question 1: if i had internet full v6 or v4 and that I enable IPsec on my v6 router do I still need a VPN through the internet ? because my routers will anyway exchange their pub/priv key or their certificate to ensure the communication. Question 2: If the answer to question 1 is yes then I only have two advantages to put my VoIP architecture to IPv6 the second advantage for me is the NAT which I will not have anymore. I know that right now I should anyway still use things like NAT-PT, Tunnelling and so one but in full v6 are their any other advantages ? Thank you

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• How can I configure Windows Server 2008/IIS 7 to send email via an asp.net web application?

  - by Steve French

  I recently moved a long-functioning web app from a Windows 2003 server to a windows 2008 server. Everything works fine, save for the email service (send password and the like). The code works on my local machine and the original web server. The system throws no errors, but the message stays endlessly in the Queue. I have granted full access to all relevant users (Network Service, IISUsers, etc). Is there something I'm missing, or does IIS7 just not send email via web applications?

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• Ubuntu 12.10 wont boot

  - by John Mark High

  im new to using Ubuntu and just bought a HP Pavilion g6-2240sa with windows 8 pre installed. I made a bootable USB with Ubuntu on it and installed alsongside windows, for 2 days it worked fine, I got into Ubuntu by doing an advanced restart from windows 8 and then booting Ubuntu from the partition it made. When i did the advanced restart today there was only 1 HDD i could select ( there were 3 before windows, a restore partition that was already there when i got the computer and Ubuntu) so i booted from the USB again and re-installed Ubuntu. then did an advanced restart and the 3 partitions where there again, i booted from Ubuntu and now heres my problem. I get the Ubuntu background when its loading then its just a black screen with some writing, its not on long enough to read, then just a black screen with a white _ and the top left corner that does nothing, i have to restat the computer and it auto boots into windows 8. im a little confused as the first time i installed Ubuntu it worked fine until the partition dissaperd), the second time i installed i did everything the same except it found the old Ubuntu so i reinstalled it and now is donst work.

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• Fastest OS for Java applications

  - by user33408

  Hello I have a multithreaded Java program. I am dealing with certain perfomance problems. I have improved everything. Hardware + Software. Now I think that it's time to move to proper Operating System. I was wondering, what OS is the fastest for Java Virtual machine? I am using Sun Java6. Do you think that Sun Solaris would be the best choice for Java applications? Or FreeBSD? or CentOS (I am using it currently)? Thanks

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• App to slice'n'dice video, specifically remove chunks, on a Mac?

  - by Phillip Oldham

  I have a couple of collections of DVD Box-Sets I've ripped to my mac. Now I'd like to sweeten the viewing experience by removing the title sequences and credits so that viewing doesn't mean I have to keep reaching for the remote to skip 30 seconds of annoying music (think watching multiple episodes of Family Guy). If I can find an app that will let me do this reasonably quickly manually that would be great, but it would be perfect if I could dump a load of commands into a file and have everything trimmed while the mac is "inactive". I'm thinking that if I can specify chunks of time to remove from the original file that would be perfect. I had a quick look at importing into iMovie to do it manually and gave up at the "Processing Thumbnails" stage as it said it would be a couple of hours to produce them for a 45min mp4 file, which I can understand at 25fps but I'm not willing to wait, especially when I've got over a week's worth of files. Any suggestions?

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• Why my router alows to connect to the internet only after plugging the cord to laptop?

  - by gennad

  Hi all! I'm using Ubuntu 10.10. I have D-link dir-320 wireless router. When I turn on my laptop Lenovo G555, I'm trying to connect to router by it's usually unsuccessful. But if I'll pull the ethernet cord from the router and insert it into my laptop, everything will work well. And if after that I'll pull the ethernet cord from the laptop and insert it into the router, my laptop connects to the router and it will have Internet access via wifi. How to make the laptop directly connects to the Internet after booting without switching the cord?

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• FreeBSD 9 (amd64) reboot/shutdown process is very slow

  - by nbari

  I have a Dell Poweredge 2900 III with FreeBSD 9 (amd64), the server uses mfi wich handles a raid10, I had to reboot the server, but notice that either when rebooting or shutting down the server, something is going wrong, besides taking to much time to reboot/shutdown, after rebooting I notice that that some ldap instances within some jails could'nt start and this was because the database was corrupted. This make me think that probably something was wrong with the disks or mfi card, but checking the disk array / logs everything seems to be working fine. My set up is something like this: Host server has the minimum base of FreeBSD 9 amd64, within I create some jails, the ones contain services like mysql, email, and some others ldap. With FreeBSD 7 and 8 I didn't notice this behavior but with FreeBSD 9 something is not working well. I did a clean installation of FreeBSD 9 and root filesystem is using ZFS. Attached is an image hoping some one can give me a hint of what to check or any kind of advice. reboot capture screen image

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• IIS 6.0 mitigating BEAST

  - by D3l_Gato

  Recently, my PCI assessor informed me that my servers are vulnerable to BEAST and failed me. I did my homework and I want to change our webservers to prefer RC4 ciphers over CBC. I followed every guide I could find... I changed my reg keys for my weaker than 128bit encryption to Enabled = 0. completely removed the reg keys for the weaker encryptions. I downloaded IISCrypto and unchecked everything but RC4 128 ciphers and triple DES 168. My webserver still prefers AES-256SHA. Is there a trick in IIS 6.0 to get your webservers to prefer RC4 ciphers that I am not figuring out? It seems like in IIS 7 they made this very easy to fix but that doesn't help me now!

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• Can't Read/Write the Hard disk used in NAS

  - by mgpyone

  I've lately purchased a Synology DS212j and I intended to use my two 3.5" HDs into it. One of them was in used as an external HD. Thus when I install these two unit in NAS, it asked me to formatted in order to used with its format (I think it's ext3?) . I installed the Disks and omit the formatting option. I just got another 3.5" Hard Disk now. I've installed it in the NAS. everything's fine. However, when I take out the (used) HD from the NAS and install back in the standalone casing, I found out that it can't be read from both OSX an Windows 7. I've tried with ext2sd and I only found 2GB portion of the whole 1.5 TB Hard Disk. Here's another reference from EASEUS Partition Master

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• Storage drives is causting system crash

  - by Chad

  I'm running Centos 5.4 with 750GB(ntfs) and 2TB drives for storage. Originally I installed the 750, everything seemed fine and then I installed the 2TB drive with NTFS already partitioned. I noticed when I would copy a lot of videos it would crash (no mouse or response from server) about 20min into it. After doing some troubleshooting I noticed the 750 would also crash when doing the same task so I decided that NTFS may be the problem. I unmounted the 2TB drive and tried to partition and format it using ext2 but when using parted it would crash at this point "writing inode tables". Looking at the dmesg logs I believe this is the error "mtrr: type mismatch for e0000000,10000000 old: write-back new: write-combining". Any idea as to what could be causing this?

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• Quaternions, Axis Angles and Rotation Matrices. Which of these should I use for FP Camera?

  - by Afonso Lage

  After 2 weeks of reading many math formulas and such I know what is a Quaternion, an Axis Angles and Matrices. I have made my own math libary (Java) to use on my game (LWJGL). But I'm really confused about all this. I want to have a 3D first person camera. The move (translation) is working fine but the rotation isnt working like I need. I need a camera to rotate arround world Axis and not about its own axis. But even using Quaternions, this doesnt work and no matter how much I read about Euler Angles, everybody says to me dont touch on it! This is a little piece of code that i'm using to make the rotation: Quaternion qPitch = Quaternion.createFromAxis(cameraRotate.x, 1.0f, 0.0f, 0.0f); Quaternion qYaw = Quaternion.createFromAxis(cameraRotate.y, 0.0f, 1.0f, 0.0f); this.multiplicate(qPitch.toMatrix4f().toArray()); this.multiplicate(qYaw.toMatrix4f().toArray()); Where this is a Matrix4f view matrix and cameraRotate is a Vector3f that just handle the angles to rotate obtained from mouse move. So I think I'm doing everything right: Translate the view Matrix Rotate the Move Matrix So, after reading all this, I just want to know: To obtain a correct first person camera rotate, I must need to use Quaternios to make the rotations, but how to rotate around world axis? Thanks for reading it. Best regards, Afonso Lage

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• Compilation of Etherpad fails in an OpenVZ VE

  - by ulf

  Hi everyone. I’m almost giving up, this will be my last try: I try to compile Etherpad on my OpenVZ server. It’s running a Debian 5.0 as the host system, in the VE I’ve got Ubuntu 10.04. I installed Etherpad in this VE with the instructions from the official Ubuntu Wiki: https://wiki.ubuntu.com/Etherpad. Everything runs fine until it comes to compilation. After calling bin/build.sh as described in the wiki the first steps are running fine. But then I’m running into a memory error: java.io.IOException: Cannot run program "cp": java.io.IOException: error=12, Cannot allocate memory Well, I understand the error message but don’t see the cause. The command free tells me that there’s plenty memory left in this VE: total used free shared buffers cached Mem: 2415236 1140872 1274364 0 0 0 -/+ buffers/cache: 1140872 1274364 Swap: 0 0 0 Beautiful. But even repeating the compilation process doesn’t bring me any further. Any help would be appreciated.

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• Let CGI-PHP load a non-default shared library.

  - by ralle

  In Apache2 I configured PHP as CGI in a virtual host: SetEnv PHPRC "/usr/local/php5.3" ScriptAlias /php5.3 "/usr/local/php5.3/bin" Action application/php5.3 /php5.3/php-cgi AddType application/php5.3 .php Everything works fine. Now I have some issues with the standard version of the GD because it restricts me in settings several hinting and anti-aliasing stuff for fonts. Therefore I want to modify the GD source and create a new shared library. Since I don't want a modifed library in my system I want only PHP to use that library. My question now: How can I change the Apache configuration in a way that PHP uses a certain new version of the library? Something like this does not work: ScriptAlias /php5.3 "LD_LIBRARY_PATH=/path/to/my/lib:$LD_LIBRARY_PATH /usr/local/php5.3/bin"

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• Windows 7 Pro x64 suffering from insomnia

  - by gemisigo

  My Win 7 Pro x64 is unable to enter sleep mode. Pressing the sleep button results in strange state where the computer starts entering the sleep mode, the display is turned off but then the whole process stops, it does not switch off the hdd, the keyboard still responds to numlock/capslock, but the display does not on anymore. I have to cut power and restart. If I remove everything (wireless mouse, external hdd, usb hub, etc.) it does enter sleep mode, but if there is something left, it does not, though every one of them has "Allow the computer to turn off this device..." checked and "Allow this device to wake the computer" unchecked. Why does it not work? It was working properly in the RC.

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• Just installed Ubuntu 10.10, can't connect via SSH

  - by swilliams

  I've just downloaded and installed Ubuntu 10.10 in a VM on virtualbox (4.0.4). Everything on the VM is set to the defaults: NAT adapter. When installing the OS, I selected OpenSSH, and nothing else. I've tried to connect to the server via ssh from the host (running Mac OS X), but it only timeouts. Can't scp my credentials to it or ping the server either. As far as I can tell, the server is connected fine, has a valid IP, and can ping google.com. I know I'm missing something basic here... I don't believe I have any kind of firewall up, unless there's one I don't know about that comes with the install. iptables has the default configuration.

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• Can't log-in anymore

  - by Awake Zoldiek

  I installed Ubuntu x64 12.04 Desktop LTS on my new laptop three days ago. Of course when I installed it I did an "apt-get upgrade" and a "apt-get update". I modified the .bashrc file to add some aliases but that's about it. Everything went fine I think, but this morning when I tried to connect to my user account, it just simply didn't work. Even when I give the right password, it will send me to a black screen with a few text lines written in white for a second and then back to the log-in screen. When I logged into the guest session, I couldn't shutdown / restart. I tried the "rm /home/MyUsername/.Xauthority" solution after doing a Ctrl + Alt + F1 at the log-in screen. But that didn't work. Does anyone has an idea ? My Ubuntu seems to use Gnome. Thank you a lot in advance ! This question is similar to this one, but their solution didn't help : -- after 12.04 upgrade: can't log in although password is correct

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