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  • Read-only filesystem

    - by János Harsányi
    I've resized a partition (ext4) from a Live CD with GParted, and after reboot it says that the file system is read-only. I've rebooted again from the CD and checked it with GParted with no errors. How could I find out why does it re-mount the file system in read-only mode? edit: It starts normally, but after some time, the "/" mount point gets remounted with read only settings, so I think it does have errors eventually. Is there any other way to repair it?

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  • PostgreSQL RAID configuration

    - by Yoldar-Zi
    I'm stuck how best to configure disk array. We have Hp P2000 G3 disk array with 24 SAS physical disks 300Gb each. We need to configure this array got 2 copies of PostgreSQL 9.2 because two different system. As we know it's recommended to store database and transaction logs(pg_xlog) files on separate disks. So we must setup 4 logical disk: 2 for transaction logs with RAID 1 2 for database with RAID 10 Is this right scheme of distribution? Or may be it is best to just make one big RAID 10 with 4 logical disks?

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  • Compiz crashes after login

    - by T.Kijas
    after I log-in into Unity, compiz effects are disabled and it says compiz crashes. Restart of them usually works, but not every time. After restart of compiz, compiz works without problems, every effect is OK. I tried latest NVIDIA drivers from xorg-edgers, but situation is the same. I tried to delete folder with compiz settings, but it hasn't helped. I use two LCDs, but with only one enabled, the situation is the same. Thank you for suggestions.

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  • Where is Sphinx located after I install it?

    - by Alex
    I have to install Sphinx on my Ubuntu 11.10 for it to work on a ruby app. I managed to install it through synaptics, however when I run my sphinx (rake ts:rebuild) I get an error message saying: Sphinx cannot be found on your system. You may need to configure the following settings in your config/sphinx.yml file: * bin_path * searchd_binary_name * indexer_binary_name I guess I just need to edit the sphinx.yml file with the right info but hey, I can't seem to find out where sphinx is. Any help?

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  • upgrade:upgradation failed,13.10 issue

    - by Atul
    I was upgrading 13.04 to 13.10.And suddenly it hanged and upper part of the screen went black. So I stopped the upgradation and unfortunately I forcefully shutdown.But its already upgraded to 13.10(I feel upgradation is not complete though) Problems The desktop flickers now and sometimes the screen turns black. Sound stopped.No sound output detected in sound settings.And the shutdown button also not working. Is there a way to upgrade it again to 13.10(completely)?

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  • Headphones don't work on an Acer Aspire 5920g

    - by Dave Chatelain
    All the problems I read about were all about the sound not working when they plugged the headphones in. I have the problem that my mic will work but the sound is still played on my built-in speakers. When I look at the sound settings, it doesn't give me any options for headphones. I run 12.04 and never had this problem in Windows. I run it on a Acer Aspire 5920g. Any tips or ideas will be very helpful.

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  • Unable to install any linux based os in my HP PAVILION DV6 notebook

    - by Nawin SS
    I tried to install ubuntu 11.04 and 12.04 both with wubi and with dvd.With wubi even when the installation is successfull the os wont boot after some time.and with dvd it shows error "0x0009"and the intallation stops. The same is the case with any linux based os i try to install.With fedora the installation stops after the display,"Detecting hard drive...".Are there any settings that must be changed in my system. Please instruct me how to overcome this obstacle.I am stuck..!

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  • relationship between the model and the renderer

    - by acrilige
    I tried to build a simple graphics engine, and faced with this problems: i have a list of models that i need to draw, and object (renderer) that implements IRenderer interface with method DrawObject(Object* obj). Implementation of renderer depends on using graphics library (opengl/directx). 1st question: model should not know nothing about renderer implementation, but in this case where can i hold (cache) information that depends on renderer implementation? For example, if model have this definition: class Model { public: Model(); Vertex* GetVertices() const; private: Vertex* m_vertices; }; what is the best way to cache, for example, vertex buffer of this model for dx11? Hold it in renderer object? 2nd question: what is the best way for model to say renderer HOW it must be rendered (for example with texture, bump mapping, or may be just in one color). I thought it can be done with flags, like this: model-SetRenderOptions(RENDER_TEXTURE | RENDER_BUMPMAPPING | RENDER_LIGHTING); and in Renderer::DrawModel method check for each flag. But looks like it will become uncomfortable with the options count growth...

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  • What hash should be used to ensure file integrity?

    - by Corey Ogburn
    It's no secret that large files offered up for download often are coupled with their MD5 or SHA-1 hash so that after you download you can verify the file's integrity. Are these still the best algorithms to use for this? Obviously these are very popular hashes that potential downloaders would have easy access to. Ignoring that factor, what hashes have the best properties for being used for this? For example, bcrypt would be horrible for this. It's designed to be slow. That would suck to use on your 7.4 GB dual layer OS ISO you just downloaded when a 12 letter password might take up to a second with the right parameters.

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  • Central renderer for a given scene

    - by Loggie
    When creating a central rendering system for all game objects in a given scene I am trying to work out the best way to go about passing the scene to the render system to be rendered. If I have a scene managed by an arbitrary structure, i.e., an octree, bsp trees, quad-tree, kd tree, etc. What is the best way to pass this to the render system? The obvious problem is that if simply given the root node of the structure, the render system would require an intrinsic knowledge of the structure in order to traverse the structure. My solution to this is to clip all objects outside the frustum in the scene manager and then create a list of the objects which are left and pass this simple list to the render system, be it an array, a vector, a linked list, etc. (This would be a structure required by the render system as a means to know which objects should be rendered). The list would of course attempt to minimise OpenGL state changes by grouping objects that require the same rendering operations to be performed on them. I have been thinking a lot about this and started searching various terms on here and followed any additional information/links but I have not really found a definitive answer. The case may be that there is no definitive answer but I would appreciate some advice and tips. My question is, is this a reasonable solution to the problem? Are there any improvements that I could make? Are there any caveats I should know about? Side question: Am I right in assuming that octrees, bsp trees, etc are all forms of BVH?

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  • What is a good way to share internal helpers?

    - by toplel32
    All my projects share the same base library that I have build up over quite some time. It contains utilities and static helper classes to assist them where .NET doesn't exactly offer what I want. Originally all the helpers were written mainly to serve an internal purpose and it has to stay that way, but sometimes they prove very useful to other assemblies. Now making them public in a reliable way is more complicated than most would think, for example all methods that assume nullable types must now contain argument checking while not charging internal utilities with the price of doing so. The price might be negligible, but it is far from right. While refactoring, I have revised this case multiple times and I've come up with the following solutions so far: Have an internal and public class for each helper The internal class contains the actual code while the public class serves as an access point which does argument checking. Cons: The internal class requires a prefix to avoid ambiguity (the best presentation should be reserved for public types) It isn't possible to discriminate methods that don't need argument checking   Have one class that contains both internal and public members (as conventionally implemented in .NET framework). At first, this might sound like the best possible solution, but it has the same first unpleasant con as solution 1. Cons: Internal methods require a prefix to avoid ambiguity   Have an internal class which is implemented by the public class that overrides any members that require argument checking. Cons: Is non-static, atleast one instantiation is required. This doesn't really fit into the helper class idea, since it generally consists of independent fragments of code, it should not require instantiation. Non-static methods are also slower by a negligible degree, which doesn't really justify this option either. There is one general and unavoidable consequence, alot of maintenance is necessary because every internal member will require a public counterpart. A note on solution 1: The first consequence can be avoided by putting both classes in different namespaces, for example you can have the real helper in the root namespace and the public helper in a namespace called "Helpers".

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  • Duplicate ping response when running Ubuntu as virtual machine (VMWare)

    - by Stonerain
    I have the following setup: My router - 192.168.0.1 My host computer (Windows 7) - 192.168.0.3 And Ubuntu is running as virtual machine on the host. VMWare network settings is Bridged mode. I've modified Ubuntu network settings in /etc/netowrk/interfaces, set the following config: iface eth0 inet static address 192.168.0.220 netmask 255.255.255.0 network 192.168.0.0 broadcast 192.168.0.255 gateway 192.168.0.1 Internet works correctly, I can install packages. But it gets weird if I try to ping something I get this: PING belpak.by (193.232.248.80) 56(84) bytes of data. From 192.168.0.1 icmp_seq=1 Time to live exceeded From 192.168.0.1 icmp_seq=1 Time to live exceeded From 192.168.0.1 icmp_seq=1 Time to live exceeded From 192.168.0.1 icmp_seq=1 Time to live exceeded From 192.168.0.1 icmp_seq=1 Time to live exceeded 64 bytes from belhost.by (193.232.248.80): icmp_seq=1 ttl=250 time=17.0 ms 64 bytes from belhost.by (193.232.248.80): icmp_seq=1 ttl=249 time=17.0 ms (DUP! ) 64 bytes from belhost.by (193.232.248.80): icmp_seq=1 ttl=248 time=17.0 ms (DUP! ) 64 bytes from belhost.by (193.232.248.80): icmp_seq=1 ttl=247 time=17.0 ms (DUP! ) 64 bytes from belhost.by (193.232.248.80): icmp_seq=1 ttl=246 time=17.0 ms (DUP! ) ^CFrom 192.168.0.1 icmp_seq=2 Time to live exceeded --- belpak.by ping statistics --- 2 packets transmitted, 1 received, +4 duplicates, +6 errors, 50% packet loss, ti me 999ms rtt min/avg/max/mdev = 17.023/17.041/17.048/0.117 ms I think even more interesting are the results of pinging the router itself: stonerain@ubuntu:~$ ping 192.168.0.1 -c 1 PING 192.168.0.1 (192.168.0.1) 56(84) bytes of data. From 192.168.0.3: icmp_seq=1 Redirect Network(New nexthop: 192.168.0.1) 64 bytes from 192.168.0.1: icmp_seq=1 ttl=254 time=6.64 ms --- 192.168.0.1 ping statistics --- 1 packets transmitted, 1 received, 0% packet loss, time 0ms rtt min/avg/max/mdev = 6.644/6.644/6.644/0.000 ms But if I set -c 2: ... 64 bytes from 192.168.0.1: icmp_seq=1 ttl=252 time=13.5 ms (DUP!) 64 bytes from 192.168.0.1: icmp_seq=1 ttl=251 time=13.5 ms (DUP!) 64 bytes from 192.168.0.1: icmp_seq=1 ttl=254 time=13.5 ms (DUP!) 64 bytes from 192.168.0.1: icmp_seq=1 ttl=253 time=13.5 ms (DUP!) 64 bytes from 192.168.0.1: icmp_seq=1 ttl=252 time=13.5 ms (DUP!) 64 bytes from 192.168.0.1: icmp_seq=1 ttl=251 time=13.5 ms (DUP!) From 192.168.0.3: icmp_seq=2 Redirect Network(New nexthop: 192.168.0.1) 64 bytes from 192.168.0.1: icmp_seq=2 ttl=254 time=7.87 ms --- 192.168.0.1 ping statistics --- 2 packets transmitted, 2 received, +256 duplicates, 0% packet loss, time 1002ms rtt min/avg/max/mdev = 6.666/10.141/13.556/2.410 ms Pinging host machine on the other hand works absolutely correctly: no DUPs, no errors. What seems to be the problem and how can I fix it? Thank you.

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  • ASP.NET MVC 3 (C#) Software Architecture

    - by ryanzec
    I am starting on a relatively large and ambitious ASP.NET MVC 3 project and just thinking about the best way to organize my code. The project is basically going to be a general management system that will be capable of supporting any type management system whether it be a blogging system, cms, reservation system, wikis, forums, project management system, etc…, each of them being just a separate 'module'. You can read more about it on my blog posted here : http://www.ryanzec.com/index.php/blog/details/8 (forgive me, the style of the site kinda sucks). For those who don't want to read the long blog post the basic idea is that the core system itself is nothing more than a users system with an admin interface to manage the users system. Then you just add on module as you need them and the module I will be creating is a simple blog post to test it out before I move on to the big module which is a project management system. Now I am just trying to think of the best way to structure this so that it is easy for users to add in there own modules but easy for me to update to core system without worrying about the user modifying the core code. I think the ideal way would be to have a number of core projects that user is specifically told not to modify otherwise the system may become unstable and future updates would not work. When the user wants to add in there own modules, they would just add in a new project (or multiple projects). The thing is I am not sure that it is even possible to use multiple projects all with their own controllers, razor view template, css, javascript, etc... in one web application. Ideally each module would have some of it own razor view templates, css, javascript, image files and also need access to some of the core razor view templates, css, javascript, image files which would is in a separate project. It is possible to have 1 web application run off of controllers, razor view templates, css, javascript, image files that are store in multiple projects? Is there a better was to structure this to allow the user to easily add in module with having to modify the core code?

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  • invitation: EMEA Hardware: Quarterly Partner Sales Update Roadshow

    - by mseika
    Dear Partner We are pleased to invite you to attend the first Oracle EMEA Hardware Quarterly Partner Sales Update Roadshow running in 10 different cities across EMEA. The 3 hour sales session will run in the afternoon in various locations. You can directly register under the "Register Now" button. Learn to Articulate the Oracle Hardware Business value proposition to your customers. Explain Oracle Hardware positioning versus the competition. Understand Oracle Hardware as best platform to run the complete Oracle-on-Oracle stack from Application to Disk Locations & Timings Date Country Location Timings 2nd July 2013   France  Paris 13.00 - 16.15 PM 2nd July 2013  Saudi Arabia  Riyadh 13.00 - 16.15 PM 4th July 2013  United Arab Emirates  Dubai 13.00 - 16.15 PM 8th July 2013  South Africa  Johannesburg 13.00 - 16.15 PM 9th July 2013  Germany  Frankfurt 14.00 - 17.15 PM 10th July 2013  Germany  Münich 14.00 - 17.15 PM 11th July 2013  Switzerland  Zürich 14.00 - 17.15 PM 15th July 2013  United Kingdom  Reading 13.00 - 16.15 PM 17th July 2013  Spain  Madrid 14.00 - 17.15 PM 18th July 2013  Italy  Milan 13.00 - 16.15 PM Price: FREE Find your location and book your seat here! We hope you will take maximum advantage of these great learning and networking opportunities and look forward to welcoming you to your nearest event! Best regards, Giuseppe FacchettiPartner Business Development Manager,Servers, Oracle EMEA Sasan MoaveniStorage Partner Sales Manager,Oracle EMEA

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  • invitation: EMEA Hardware: Quarterly Partner Sales Update Roadshow

    - by mseika
    Dear Partner We are pleased to invite you to attend the first Oracle EMEA Hardware Quarterly Partner Sales Update Roadshow running in 10 different cities across EMEA. The 3 hour sales session will run in the afternoon in various locations. You can directly register under the "Register Now" button. Learn to Articulate the Oracle Hardware Business value proposition to your customers. Explain Oracle Hardware positioning versus the competition. Understand Oracle Hardware as best platform to run the complete Oracle-on-Oracle stack from Application to Disk Locations & Timings Date Country Location Timings 2nd July 2013   France  Paris 13.00 - 16.15 PM 2nd July 2013  Saudi Arabia  Riyadh 13.00 - 16.15 PM 4th July 2013  United Arab Emirates  Dubai 13.00 - 16.15 PM 8th July 2013  South Africa  Johannesburg 13.00 - 16.15 PM 9th July 2013  Germany  Frankfurt 14.00 - 17.15 PM 10th July 2013  Germany  Münich 14.00 - 17.15 PM 11th July 2013  Switzerland  Zürich 14.00 - 17.15 PM 15th July 2013  United Kingdom  Reading 13.00 - 16.15 PM 17th July 2013  Spain  Madrid 14.00 - 17.15 PM 18th July 2013  Italy  Milan 13.00 - 16.15 PM Price: FREE Find your location and book your seat here! We hope you will take maximum advantage of these great learning and networking opportunities and look forward to welcoming you to your nearest event! Best regards, Giuseppe FacchettiPartner Business Development Manager,Servers, Oracle EMEA Sasan MoaveniStorage Partner Sales Manager,Oracle EMEA

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  • How do I create a free server-side database to be accessed via Windows forms and/or browser?

    - by NoCatharsis
    I have no formal education in databasing or programming, but I've learned enough SQL, C++, and C# to at least get started setting up a small database on my company's server. Using MS SQL Server 2008 R2, I have created the database and set up columns with proper data types. However, there seems to be a lot of tweaks and details that are way over my head. Since I would like these data to be accessible to the other 7 or 8 people in my office (preferably via web browser), I'm wondering whether this is the best setup for my situation. The other option I've read about is a LAMPP server, which I assume is the competing free option to Microsoft's Express packages. I know nothing of LAMP servers except from the articles I've read on how to set them up (and I believe I even saw a detailed tutorial somewhere). To summarize, my question is this: Which of these (or any other) server setups would best suit my purposes, keeping in mind that I'm a true novice (but willing to learn), and would like to keep it free until I get more experience?

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  • Setting up and moving a distribution group to a public folder in Exchange 2003

    - by Sevdarkseed
    I'm looking for some advice with something that seems simple but I haven't done before. Currently we use a distribution group called Orders that has an email address that is that forwarded to four people in the company, the same goes for another one, Quotes. The problem is, of course, no one knows what was answered, and all the email gets worked in to the individual user's emails, so I'm thinking that a public folder, only accessible by one department would be the answer. I'm not sure what the best way to set this up would be or how to move/convert the current distribution list over to a public folder. This is a very critical email address in the company, so I'm trying to be sure that there is zero down time at all for it. What would be the best way to go about creating a public folder and converting/forwarding/moving/(whatever) over the current email address to that folder?

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  • How to store prices that have effective dates?

    - by lal00
    I have a list of products. Each of them is offered by N providers. Each providers quotes us a price for a specific date. That price is effective until that provider decides to set a new price. In that case, the provider will give the new price with a new date. The MySQL table header currently looks like: provider_id, product_id, price, date_price_effective Every other day, we compile a list of products/prices that are effective for the current day. For each product, the list contains a sorted list of the providers that have that particular product. In that way, we can order certain products from whoever happens to offer the best price. To get the effective prices, I have a SQL statement that returns all rows that have date_price_effective >= NOW(). That result set is processed with a ruby script that does the sorting and filtering necessary to obtain a file that looks like this: product_id_1,provider_1,provider_3,provider8,provider_10... product_id_2,provider_3,provider_2,provider1,provider_10... This works fine for our purposes, but I still have an itch that a SQL table is probably not the best way to store this kind of information. I have that feeling that this kind of problema has been solved previously in other more creative ways. Is there a better way to store this information other than in SQL? or, if using SQL, is there a better approach than the one I'm using?

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  • Increasing load capacity for growing website

    - by markxi
    My website currently runs on a dedicated web server (with LiteSpeed) and dedicated MySQL database server. It's a download based site with a lot of user-generated content, which can be streamed and downloaded, there are also thousands of thumbnails and static content. I'm at the stage where the web server can no longer handle the amount of traffic, so I'm looking a how best to increase capacity considering the large amount of downloadable content. My host suggests mirroring everything on a second web server and distributing the load between them using either DNS Made Easy, or to have my own load balancer (using ldirector) in front of the two web servers. Could anyone advise whether the above method would be the best option? Does any one have any experience with DNS Made Easy and/or ldirector? I'd appreciate any help.

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  • Moving 2d camera in the y direction

    - by Alex
    I'm developing a simple game for the iphone and am struggling to work out the best way for the camera to follow the main character. The following picture hightlights the three main components: There are 3 components to this: Circle - the main character Green line - terrain Black background The terrain is simply made from an array of points (approx 20 points per screen width). The terrain is moved in the x direction relative to the black background in order to keep the circle in its position shown. The distance to move the terrain is simply: movex = circle.position.x - terrain.position.x with a constant to fix the circle at some distance from the left of the screen. I am struggling to determine the best way to position the terrain in the y plane keep the focus in the character. I want to move the terrain in the y direction smoothly and not fix it to the position of the circle, so the circle can move in the y plane. If I take the same approach as the x positioning, the character is fixed at a point on the screen and the terrain moves. I could sample some terrain points either side of the character and produce an average, but in my implementation this was not smooth. I thought another approach might be to create a camera 'line' that is a smooth version of the terrain line and make the camerea follow this, but I'm not sure if this is the optimum solution. Any advice is much appreciated!

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  • Previewing a Demo Level in Mobile for UDK?

    - by Reno Yeo
    I've already clicked on "Emulate Mobile Features" and everything has been compiled. I've also set the mobile previewer settings to iPhone 4's dimensions and features. However, when i click on the mobile previewer, a new window pops up but it goes into a "Not Responding" mode after a while. Is there anything I'm doing wrong? To be honest, I'm afraid of the difficulty curve required in learning UDK, but I am interested in developing a game for it.

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  • Unable to share a folder between Windows 7 and Ubuntu (running in VMWare)

    - by iJeeves
    I have installed vmware toolbox in ubuntu (guest OS). I tried to share a location from the settings of the virtual machine. But when I click Ok, the following error in thrown in the host (Win 7) OS. "Unable to update run-time folder sharing status: Unknown error." The location is not showing up in /mnt/ What could be the reason? P.S I have vmhgfs process running in my Ubuntu VM. I was following this method.

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  • Being rocked...

    - by ZacHarlan
    After almost four and half years, I finally escaped from the world of telemarketing.     I'm now at a place that writes really good code, values testing, does routine code reviews, collaborates with each other so continuously and effectively somebody should make a documentary about it!   Today alone, I had two really smart and well respected developers go line by line through my code and show me how to make it better.  Seriously, people pay really good money for something like this and they don't get near the quality of feedback as I got!     +1 for me finally getting to a point in my career where i get to work with some of the best of the best in the software world!   I've been rocked by the fact that places like this actually exist.     I've been Rocked by the sheer size, complexity and simplicity of our website.     Most importantly I've been ROCKED by the fact that this many smart people check their egos at the door, gel together and look for ways to make software better than how they found it.  This is how to grow a business with tech... hire great people and watch them go!   Seriously, bravo.

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  • Cannot remove AWN and desktop messed up

    - by anonymous
    I recently installed AWN after reading an article on OMGUbuntu. It looked very good in the pictures but I didnt like it at all. I couldent remove it and it replaced the status bar and the Applications menu. I went into the settings and told it to not begin on startup, rebooted, and logged into a destop with no menu bar, applications, and I'm limited to a few folders on my desktop and terminal. PLEASE HELP!!

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  • How can I make NetworkManager ignore my wireless card?

    - by ændrük
    I do not want NetworkManager to list or manipulate my wireless card. Can I hide its interface from NetworkManager somehow? I have tried adding this in /etc/network/interfaces, iface wlan0 inet static address 192.168.1.101 netmask 255.255.255.0 gateway 192.168.1.1 wireless-essid Synaptotagmin pre-up wpa_supplicant -B -i wlan0 -c /etc/wpa_supplicant.conf post-down killall -q wpa_supplicant and this in /etc/NetworkManager/nm-system-settings.conf, [keyfile] unmanaged-devices=/org/freedesktop/Hal/devices/net_00_19_e0_57_86_af but NetworkManager Applet still lists and allows me to connect to wireless networks.

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