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• Can't install GTX 680 drivers on 12.04

  - by user68945

  I recently installed Ubuntu 12.04 on my desktop. I have three monitors, and after installing, ubuntu only detected one at 1080p. I downloaded the driver from the nvidia website, but when I stop lightdm and try to run the driver, it gives me an error message: ERROR: Unable to find the kernel source tree for the currently running kernel. Please make sure you have installed the kernel source files for your kernel and that they are properly configured; on Red Hat Linux systems, for example, be sure you have the 'kernel-source' or 'kernel-devel' RPM installed. If you know the correct kernel source files are installed, you may specify the kernel source path with the '--kernel-source-path' command line option. I tried instead to install the driver via the terminal, with the X ppa. The installation seemed to work, but when I rebooted, my display was at 640x480 resolution, with no other options for resolution. The NVIDIA X Server settings program is there now, but when I run it, it simply tells me that I don't seem to be using their driver, and that I should run nvidia-xconfig as root. Doing so doesn't help, I simply get the same issue again. I checked the file at /etc/X11/xorg.conf, and it's an NVIDIA file (has nvidia in the header). Does anyone know something else I can try? EDIT: Forgot to mention, I tried installing drivers via the "Additional Drivers" GUI utility, there were two options, one of them marked "(post-release updates)". I tried both of them, in both cases it tried to download and install for a while, then said that there was an error, and that a description could be found at /var/log/jockey.log. Both logs were over 700 lines

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• ssh asks for password despite ssh-copy-id

  - by Aliud Alius

  I've been using public key authentication on a remote server for some time now for remote shell use as well as for sshfs mounts. After forcing a umount of my sshfs directory, I noticed that ssh began to prompt me for a password. I tried purging the remote .ssh/authorized_keys from any mention the local machine, and I cleaned the local machine from references to the remote machine. I then repeated my ssh-copy-id, it prompted me for a password, and returned normally. But lo and behold, when I ssh to the remote server I am still prompted for a password. I'm a little confused as to what the issue could be, any suggestions?

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• Issues connecting VMWare VM to Windows 7 (host)

  - by MasterGberry

  I am on windows 7 trying to figure out why i cannot ping my computer or my VM from the other one, yet I am able to ping the router on both and other computers on the network. My desktop is running windows 7 64 bit and my vm is running CentOS 64 bit (which is what I use to test my web server stuff). At my school the VM has a dedicated IP and i don't have this issue, but I am home now and having issues trying to set this up behind my dumb router...I had already tried changing the VINC (i believe) to hide the vmnet1 and vmnet8 connections from the windows firewall and this seemed to have worked for like 5 minutes and then stopped... Any ideas? Thanks

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• Can't connect to server from certain machines

  - by Joel Coel

  On a small college campus we have a VLAN setup for the computer labs. These machines get assigned IP addresses in the 192.168.7.xxx range. In the server room, all of the server are on the default VLAN and assigned an IP address in the 10.1.1.xxx range. For the most part this works, but the lab machines are unable to connect to one of the servers. They can't even ping it. They can talk to other servers on the same switch as this server just fine. At first I thought it might be a vlan issue, but I changed the server port vlan to match other known-working ports with no effect. Any ideas?

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• MATLAB: What is an appropriate Data Structure for a Matrix with Random Variable Entries?

  - by user12707

  I'm working in an area that is related to simulation and trying to design a data structure that can include random variables within matrices. I am currently coding in MATLAB. To motivate this let me say I have the following matrix: [a b; c d] I want to find a data structure that will allow for a, b, c, d to be either real numbers or random variables. As an example, let's say that a = 1, b = -1, c = 2 but let d be a normally distributed random variable with mean 20 and SD 40. The data structure that I have in mind will give no value to d. However, I also want to be able to design a function that can take in the structure, simulate an uniform(0,1), obtain a value for d using an inverse CDF and then spit out an actual matrix. I have several ideas to do this (all related to the MATLAB icdf function) but would like to know how more experienced programmers would do it. In this application, it's important that the structure is as "lean" as possible since I will be working with very very large matrices and memory will be an issue.

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• Boot.ini on Windows Server 2003 R2

  - by Jason H.

  I have a Windows Server 2003 R2 with 48 GB of RAM; server has been running strong for quite some time. Recently our boot.ini was modified causing issues, most likely by our remote administrators. Now the server is only showing 14 GB of RAM. This has caused major performance issues for our end users. Our remote administrators have stated "we don't change the boot.ini settings(switches)". However, I know for a fact that all of the local administrators have not modified the switches (due to lack of permissions). The real question.. Is it possible to "audit" who has modified the boot.ini? If thats not possible, can the boot.ini be set via startup? Any help would be greatly appreciated. This is an ongoing issue that I would love to resolve.

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• Error sysprepping Windows 8 Enterprise 90-day trial

  - by Philip

  I am using the Windows 8 Enterprise 90-day trial to evaluate the latest version of Windows for a private school. The way I work is that I use sysprep to prepare an generalized image, then I clone it to the school's computers. When I follow the instructions and try sysprep on my installation of Windows 8 in VirtualBox, sysprep thinks briefly and gives me an error message: Fatal error occurred while trying to sysprep the machine. Once I acknowledge it, sysprep closes. I checked the Windows Event Log, and there's nothing there that I could see. I also followed some instructions to cure this problem, but nothing changed. The error remains. My best guess is that the 90-day trial prohibits the use of sysprep, but I can't be sure. It might also be my use of VirtualBox, or who-knows-what. Has anyone had success with this, or encountered the same issue on real hardware?

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• LAN full of public ipv4 addresses - How to filter it?

  - by sparc86

  The answer to my question maybe is not that hard but anyways, I do not know what to do. So, I just got in a new job in a Univerisity and I found out that the network (the LAN) is full of public IP addresses. Seriously, the whole LAN (probably more than 150 hosts) has it' own internet IP address and I don't know how to manage it. I have a very good experience using iptables (Linux firewall) in a NAT'ed environment. But then how should I proceed in an environment where all my LAN is working with a bunch of public IP addresses? Should I just use the "forward" rules and ignore the NAT rules or is there any other issue in such environment which I should take care? Can I add a firewall between the router and the LAN in order to produce packet filtering for these public IP addresses in my LAN or will this just not work? Thanks!

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• ipfw is blocking access to a script

  - by user225551

  I need to figure out how to troubleshoot why ipfw is blocking my script. This script parses out some rss feeds over the net. I have about 10 different feed urls. About 5 or 6 of these urls are returning xml, the others are timing out. If I turn the firewall off, they will all work. The issue I'm having is that I have no idea what port I need to open for the urls that are timing out. Is there a command that will show me this?

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• Template loading slowness on VPN

  - by Mesut

  Hi All We have got lots of Word templates on our network. They are perfectly working on local area network. However, if users try to create a new word document from a template when they are connected to VPN outside of the office, it takes nearly 20 minutes to create a word file which is not reasonable at all. Have you guys ever come across with this type of issue? if yes, any suggestion or help would be appreciated. Many Thanks from now on. Best Regards Mesut

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• .htaccess rules not working, but the file seems to be loaded

  - by user221877

  I am trying to remove .php at the end of the URL from any page thats loaded. RewriteEngine on RewriteCond %{REQUEST_FILENAME} !-d RewriteCond %{REQUEST_FILENAME}.php -f RewriteRule ^(.*)$ $1.php Its running on my own server, which has WHM/cPanel, so I can change settings at the server level, I'm just not really sure what I'm looking for. I found the httpd.conf file, but it said it was auto generated by whm, so I tried looking in whm for the correct settings but it had barely any settings related to htaccess. If I fill htaccess with gibberish it stops the site from loading, which I assume means that the .htaccess file is being loaded, so I'm not sure what the issue is.

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• Apache: multiple domains handling

  - by cache

  So I use following schema to handle multiple sites on my apache: <VirtualHost 192.168.1.100:80> # get the server name from the Host: header UseCanonicalName Off VirtualDocumentRoot /var/www/%0/docs VirtualScriptAlias /var/www/%0/cgi-bin </VirtualHost> Therefore, if a client go to www.example.com, it will actually point to /var/www/www.example.com/doc/, which is good. However, what if the client go to example.com? It will point to /var/www/example.com/doc, which is not what we want. So my question is: is there any better schema for that? Or what should I do to fix the issue? Thanks!

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• Multi-machine backup solutions

  - by Paul

  I have a growing number of PCs and laptops in my home that need a backup solution. My question is 2 fold: Most commercial backup vendors appear to license by the machine, are there any products that give a license that can be used on all your machines, without a per machine cost? An alternative is to have a centrally controlled back up strategy controlled from a single PC with an attached hard drive that can back up other machines on the network. What backup software is suitable for this approach? Will this software be windows/Linux interoperable? I've searched for duplicate questions but don't see anything that addresses the multi machine/cost issue. OSs in network will be Windows (XP, Vista, 7) and Linux variants. Not pattern to when machines will be switched on.

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• Setting correct Content-Type sent from Wordpress, on Apache server

  - by eoinoc

  I need help pointing me in the right direction for setting the ContentType returned by Apache for content produced by WordPress. I'm having trouble figuring out why WordPress is returning incorrect headers. Issue The specific problem is that our Wordpress blog pages are being downloaded as a file rather than displayed by Internet Explorer and Chrome v21. Content-Type: application/x-gzip is being returned by the server. I'm told that I should expect Content-Type: text/html. Background The URL is http://www.bitesizeirishgaelic.com/blog/.

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• Why is the remove function not working for hashmaps? [migrated]

  - by John Marston

  I am working on a simple project that obtains data from an input file, gets what it needs and prints it to a file. I am basically getting word frequency so each key is a string and the value is its frequency in the document. The problem however, is that I need to print out these values to a file in descending order of frequency. After making my hashmap, this is the part of my program that sorts it and writes it to a file. //Hashmap I create Map<String, Integer> map = new ConcurrentHashMap<String, Integer>(); //function to sort hashmap while (map.isEmpty() == false){ for (Entry<String, Integer> entry: map.entrySet()){ if (entry.getValue() > valueMax){ max = entry.getKey(); System.out.println("max: " + max); valueMax = entry.getValue(); System.out.println("value: " + valueMax); } } map.remove(max); out.write(max + "\t" + valueMax + "\n"); System.out.println(max + "\t" + valueMax); } When I run this i get: t 9 t 9 t 9 t 9 t 9 .... so it appears the remove function is not working as it keeps getting the same value. I'm thinking i have an issue with a scope rule or I just don't understand hashmaps very well. If anyone knows of a better way to sort a hashmap and print it, I would welcome a suggestion. thanks

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• Data structure for grid with negative indeces

  - by The Secret Imbecile

  Sorry if this is an insultingly obvious concept, but it's something I haven't done before and I've been unable to find any material discussing the best way to approach it. I'm wondering what's the best data structure for holding a 2D grid of unknown size. The grid has integer coordinates (x,y), and will have negative indices in both directions. So, what is the best way to hold this grid? I'm programming in c# currently, so I can't have negative array indices. My initial thought was to have class with 4 separate arrays for (+x,+y),(+x,-y),(-x,+y), and (-x,-y). This seems to be a valid way to implement the grid, but it does seem like I'm over-engineering the solution, and array resizing will be a headache. Another idea was to keep track of the center-point of the array and set that as the topological (0,0), however I would have the issue of having to do a shift to every element of the grid when repeatedly adding to the top-left of the grid, which would be similar to grid resizing though in all likelihood more frequent. Thoughts?

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• Do hard drives have to be mounted somewhere?

  - by TheLQ

  I'm creating a cheap JBOD box with ~7 IDE hard drives. However when you take into account 3 existing drives + 2 CD drives that are installed as well, I am out of mounting places inside the server. Will I adversely affect or harm the drives if I just stack them on top of each other in the box? Before you ask if they are going to fall over, this box won't be moved and won't really be touched while its in use. Heat (should) be taken care of by the fans. However I am worried about the vibrations that each drive will put out. Is this an actual issue?

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• Ubuntu Wired network(ethernet does not work)

  - by user36777

  It was working just fine, until the other day I yanked it out. The wireless works just fine on the same router. If I login to a windows 7 instance on this dual boot laptop then the ehternet works just fine. So it's not a hardware, cable or router issue. The card even gets an ip, but I can't connect to the internet. Here are the details from route, iptables, ifconfig, ping etc. Any ideas? I have been struggling with this for day, none seems to have an answer. http://pastie.org/954816

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• Battery life low on notebook using ubuntu 11.10 vs. windows 7

  - by les

  Im using a brand new Dell XPS notebook (bought mar 2012) which has 4.5 hrs battery life using a 6 cell battery-when i use windows 7. The machine uses an Intel core 17 2670qm processor, and a 64 bit operating system. I downloaded Ubuntu 11.10 and installed it on a USB drive, which is how i use it. I still have Windows 7 on the machine. When the machine is booting up I hit F12, and run Ubuntu from the flash drive instead of the machine booting Windows, as it normally would. On the Ubuntu menu, on the top right area, there is a battery menu, which shows how long to charge battery, or how much life left etc..with a fully charged battery the most Ubuntu will give me is 1.5 hrs. I've adjusted all power setting etc by clicking on the battery meter where i can make these adjustments, and have even turned down the brightness on the monitor. I've read through these questions here, and a user wrote to install Ubuntu 12(?)(the alpha version) when it's out this month(april), and this has better power management. Other forums (Ubuntu wiki) state that windows 7 controls power management effectively because it's configured to work with the hardware. I'd like to install Ubuntu and wipe windows but can't because of this issue. I need my notebook to go hours, not an hour and a bit. Can anybody recommend possibly a good software to use, that will work with the machines bios under Ubuntu? Another thought of mine, is- since I didn't yet wipe windows off my hard disk, is windows still possibly controlling the power mgmt aspect on the machine? I've thought of calling tech support at Dell and asking for help there, maybe Dell has something (a tweak?), I can download that'll work under Ubuntu. Looking forward to any help/suggestions i can get here, i'm really stuck on this..

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• How to specify the order of startup scripts (CLI)?

  - by bcsteeve

  Startup really confuses me. It seems various methods for starting things happen in different locations all over the place. But is there a way to define the order they are loaded? Specifically... I have an issue where Plex Media Server (PMS) can't be discovered by clients if the server's VPN connection is established prior PMS starting. It was driving me nuts, but I discovered that I could solve the problem by shutting down PMS, shutting down the VPN, turning on PMS and then turning on VPN. I'm not exactly sure how PMS auto-loads itself at startup, but the VPN is something I defined by editing: /etc/network/if-up.d/slickvpn with the following: #! /bin/bash REQUIRED_CONNECTION_NAME="Wired connection 1" VPN_CONNECTION_NAME="myvpn" activ_con=$(nmcli con status | grep "${REQUIRED_CONNECTION_NAME}") activ_vpn=$(nmcli con status | grep "${VPN_CONNECTION_NAME}") if [ "${activ_con}" -a ! "${activ_vpn}" ]; then nmcli con up id "${VPN_CONNECTION_NAME}" fi That's a script I found somewhere (I think on this site) when looking for help autoconnecting a VPN. So I guess /etc/network/if-up.d/ scripts are initiated prior to the PMS service. How can I flip that? Or other solution?

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• Word 2010 Style Sets and Multilevel Lists

  - by Stevia

  In Word 2010, how can you create quick style sets that include multilevel lists (include being the operative word)? As background, I have created a set of styles for a long agreement form and assigned them to levels in a certain custom multilevel list. I then also saved those styles as a quick style set called Long Agreement. I have saved those styles in my normal template. That all works fine for assigning styles to a Long Agreement. What I'd like to do next is create a second style set called Short Agreement. I will assign certain styles to that style set. The issue is that I don't see how to tie a different custom multilevel list to those Short Agreement styles. When I click on Change Styles, Short Agreement [style set], and I apply those styles, how can I get it to automatically use the multilevel list that I assign to short agreements?

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• Computer freezes when CD/DVD is enable, computer HP Pavilion dv98278 Notebook OS - Vista

  - by tom

  As the title states, when my CD/DVD drive is enable my computer freezes showing a diagonal patter on the monitor. This is what has been attempted (DF - didn't fix): (1) cleaned regsitry file - DF; (2) uninstalled and installed driver HL-DT-ST DVDRAM GSA T20L ATA - DF; Yelled profanities at the computer - DF but I felt better. I want to install OS 7 but this makes it much more complicated. It's appearing as a hardware issue to me, however, what do I know. Any suggestions?

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• Mix content warning on ASPX page

  - by Amit

  Hi, We have started receiving the mixed content warning on ASPX pages on our secured site. We do not have any mix content, we load all our JS, Images, CSS and ASPX files using HTTPS. I dont know why we have started receiving these warnings now. The latest thing which we have added is the third party control for Dialog boxes from Essential Object. We are previously using their Menu control but added dialog box recently. Also we have made our application browser compatible. I feel the reason is something between these two points. Can anyone suggest any solution or any workaround if they know any or have used Essential Object controls and faced simililar issue? Essential object is saying it is not their problem. The mix content warning appears any time and not specifically when the Essential Control dialog box popsup, thats why I am bit confused. Any help is highly appriciated. Thanks.

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• I have just upgraded to 13.10 and i can not install any programs

  - by jason malitz

  I upgraded to Ubuntu 13.10 last night and i tried to install empathy chat client and this is what I see after the failed down load installArchives() failed: (Reading database ... (Reading database ... 5% (Reading database ... 10% (Reading database ... 15% (Reading database ... 20% (Reading database ... 25% (Reading database ... 30% (Reading database ... 35% (Reading database ... 40% (Reading database ... 45% (Reading database ... 50% (Reading database ... 55% (Reading database ... 60% (Reading database ... 65% (Reading database ... 70% (Reading database ... 75% (Reading database ... 80% (Reading database ... 85% (Reading database ... 90% (Reading database ... 95% (Reading database ... 100% (Reading database ... 397719 files and directories currently installed.) Removing xserver-common-lts-raring ... Removing 'diversion of /usr/lib/xorg/protocol.txt to /usr/lib/xorg/protocol-precise.txt by xserver-common-lts-raring' dpkg-divert: error: rename involves overwriting `/usr/lib/xorg/protocol.txt' with different file `/usr/lib/xorg/protocol-precise.txt', not allowed dpkg: error processing xserver-common-lts-raring (--remove): subprocess installed post-removal script returned error exit status 2 No apport report written because MaxReports is reached already Errors were encountered while processing: xserver-common-lts-raring Error in function: So how do I fix this issue

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• Why do I have inconsistent network issues with my laptop's wireless?

  - by Jason

  I'm having trouble with my laptop Internet connection. It's patchy at best and resets or freezes a lot. The signal strength is also random. I thought it might be a driver issue but now I don't know. Three other computers using the same wireless network run well. I've switched out wireless routers so I don't think it's the router. I thought it might be the laptop's internal wireless card but I just bought an external USB network card and I'm still having problems. Specs Lenovo T-60p Windows 7 Ultimate Edition Patches/drivers are up to date I only use one of the below at a time, disabling the other: Intel PRO/Wireless 3945ABG v. 13.3.0.137 (Internal wireless) Medialink Wireless-N USB 2.0 Adapter (USB wireless) Any ideas on what might be the problem?

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