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Search found 274 results on 11 pages for 'graham powell'.

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• Please explain some of Paul Graham's points on LISP

  - by kunjaan

  I need some help understanding some of the points from Paul Graham's article http://www.paulgraham.com/diff.html A new concept of variables. In Lisp, all variables are effectively pointers. Values are what have types, not variables, and assigning or binding variables means copying pointers, not what they point to. A symbol type. Symbols differ from strings in that you can test equality by comparing a pointer. A notation for code using trees of symbols. The whole language always available. There is no real distinction between read-time, compile-time, and runtime. You can compile or run code while reading, read or run code while compiling, and read or compile code at runtime. What do these points mean How are they different in languages like C or Java? Do any other languages other than LISP family languages have any of these constructs now?

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• Which Graham essay talks about not knowing if you're a good programmer?

  - by Shawn J. Goff

  I am trying to find Paul Graham's essay that mentions something to the effect of "hackers can't know if they're good". In it, he says he (with a seemingly false humility) says he himself doesn't even know if he's good. P.S. Sorry for the softball question. I did try searching his site and it was unproductive.

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• My pc freezes when I connect to the internet with my iburst usb modem

  - by Kevin

  I am quite new to it and I'm having some trouble with iBurst usb modem.I followed the instructions of Graham Inggs here: https://help.ubuntu.com/community/Iburst and now it seems I can connect to the internet, but when I try to connect my whole desktop freezes. When I boot into Ubuntu with my modem connected all is well until I try to open Firefox then my desktop freezes as well.I used Graham Inngs' ibdriver in DKMS fromat solution and it worked apart from the freezing. Graham Inggs made a patch for this problem for older linux versions but I can't seem to find anything compatible with 12.04. Can someone please help?

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• Magento Checkout options

  - by graham barnes

  Hi I want to add some options to my magento, lets say i print on clothing, a customer buys some t-shirts, shirts and jackets from me, it totals to £60+ VAT on the checkout area where i signup and not before I need to add an option where I can add a text box and upload option, can i do this? I ideally then want to add some pricing options if the user has chosen to add some branding to a product or multiple products e.g. if the branding was on the top right of the shirt it will cost £5.00, if on the back it costs £7.00 etc all if possible to be done via the admincp. I also want an option so when they upload their logo for the first time they are charged a one off charge, like a setup fee but If the customer has allready sent in there logo then no charge applies. thanks Graham

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• Magento Checkout options

  - by graham barnes

  Hi I want to add some options to my magento, lets say i print on clothing, a customer buys some t-shirts, shirts and jackets from me, it totals to £60+ VAT on the checkout area where i signup and not before I need to add an option where I can add a text box and upload option, can i do this? I ideally then want to add some pricing options if the user has chosen to add some branding to a product or multiple products e.g. if the branding was on the top right of the shirt it will cost £5.00, if on the back it costs £7.00 etc all if possible to be done via the admincp. I also want an option so when they upload their logo for the first time they are charged a one off charge, like a setup fee but If the customer has allready sent in there logo then no charge applies. thanks Graham

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• How can I set a Windows user environment variable that takes effect for the current session?

  - by Graham Powell

  I am trying to set a Windows user environment variable and then launch an application via either batch file or a script. However, the environment variable is not set to the appropriate value until after the user logs off and logs back on. (I think a more accurate description would be that the new value is not available to the app until after the next logon.) Is there any way to set a variable in the user's environment so that it's immediately available? I'm doing this because this program's functionality can be controlled by environment variables, and users will need different functionality at different times. Because of license constraints I need to set this dynamically, if possible. Thanks, Graham

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• SQL Query to retrieve highest item up to a point in a group

  - by James

  The best way of describing this is I have a table of people with their names and ages. Assume that people with the same surname are from the same family. I need a query in oracle which will retrieve a list of the oldest person in each family, but not older than a certain age. Table: person name surname age =============================== James Smith 23 Sarah Powell 17 Barry Smith 31 Mark Smith 35 Mary Smith 18 Bob Powell 30 How do I retrieve the oldest person in each family under 30? Results I'm after name surname age =============================== James Smith 23 Sarah Powell 17

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• How to PERMANENTLY disable touchpad tap-to-click on Dell Inspiron/Windows 7

  - by Graham

  Hi all - my first time here, so I hope you can help. I've seen a lot of stuff on various forums (including here) about disabling the annoying "tap" function on a laptop touchpad. I learned the hard way not to de-install the driver (as the software suggests), since you then loose the Synaptic tab in the mouse control settings, and with it all means to modify the touchpad settings ... indicentally, if this happens to you, reboot in safe mode and do a restore, and the synaptic tab comes back. Not ideal, I know, but it works. Anyway, I have the most up-to-date drivers, and I can go to the Synaptics tab and can disable the tap-to-click function no problem. However, next time the machine is booted, tap-to-click is back on. It can alsways be disabled, but it's pain having to reset it every time the mchine is powered up. Is there a way to permanently disable it, once and for all? Thanks in advance, Graham

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• Physics/Graphics Components

  - by Brett Powell

  I have spent the last 48 hours reading up on Object Component systems, and feel I am ready enough to start implementing it. I got the base Object and Component classes created, but now that I need to start creating the actual components I am a bit confused. When I think of them in terms of HealthComponent or something that would basically just be a property, it makes perfect sense. When it is something more general as a Physics/Graphics component, I get a bit confused. My Object class looks like this so far (If you notice any changes I should make please let me know, still new to this)... typedef unsigned int ID; class GameObject { public: GameObject(ID id, Ogre::String name = ""); ~GameObject(); ID &getID(); Ogre::String &getName(); virtual void update() = 0; // Component Functions void addComponent(Component *component); void removeComponent(Ogre::String familyName); template<typename T> T* getComponent(Ogre::String familyName) { return dynamic_cast<T*>(m_components[familyName]); } protected: // Properties ID m_ID; Ogre::String m_Name; float m_flVelocity; Ogre::Vector3 m_vecPosition; // Components std::map<std::string,Component*> m_components; std::map<std::string,Component*>::iterator m_componentItr; }; Now the problem I am running into is what would the general population put into Components such as Physics/Graphics? For Ogre (my rendering engine) the visible Objects will consist of multiple Ogre::SceneNode (possibly multiple) to attach it to the scene, Ogre::Entity (possibly multiple) to show the visible meshes, and so on. Would it be best to just add multiple GraphicComponent's to the Object and let each GraphicComponent handle one SceneNode/Entity or is the idea to have one of each Component needed? For Physics I am even more confused. I suppose maybe creating a RigidBody and keeping track of mass/interia/etc. would make sense. But I am having trouble thinking of how to actually putting specifics into a Component. Once I get a couple of these "Required" components done, I think it will make a lot more sense. As of right now though I am still a bit stumped.

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• Change from Bullet/OgreAnim to Havok?

  - by Brett Powell

  I have been working on a game in Ogre for the last 6 months or so. It started as a learning project, and after a few rewrites it actually turned into a real game project. Physics scared me, and using Bullet with its lack of documentation was a nightmare, but I was able to atleast get some basics added and learned a lot. So as of now I am using Ogre with its default animation system (fairly basic) and Bullet Physics. I had always wanted to use Havok when I started out, but due to lack of integration information on the Ogre forums, and lack of tutorials on the net, I decided against it. Now that I am actually at the point where Bullet is just too much of a headache to proceed with (staring at forum threads praying someone answers) and the Ogre animation system is so basic, I am considering switching to Havok for Physics and Animation. The Physics system looks extremely polished and easy to use. The animation system looks incredible with the retargeting/blending/etc. The documentation is incredibly detailed as well (I guess when you come from Bullet, any documentation looks amazing) So my question is, as I am still somewhat of a 'newbie' to game development, should I just stick with what I am using now or should I make the switch over to Havok? The physics looks like I could get my project back to where it is now with minimal effort, and be able to expand much faster. The animation aspect looks extremely daunting as far as integrating it with Ogre.

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• When are child views added to Layout/ViewGroup from XML

  - by JohnTube

  My question is : I want to know when does a xLayout (or ViewGroup in general) add a child view from XML ? And by "when" I mean at what point of code, in what "pass" of the "traversal" of the UI toolkit ? Which method of xLayout or ViewGroup should I override ? I have done my homework : I have watched the "Writing Custom Views For Android" presented (by Adam Powell and Romain Guy) in the last Google I/O and I have read Adam Powell comments on this Google+ post.

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• Loop through several servers, find specific dlls , get the dll version, internal filename and path?

  - by Graham

  I am a newby to Powershell, and using PS v2. I can see the massive potential it has, but I just can't get the following code to work fully. I am trying to end up with a csv file that contains the wild carded required dlls in the GAC_MSIL or sub-directory, get the dll version, internal filename and path, and the server IP address. The code is below, and it is in single line format because it appears easier to remote onto one of the servers in the server farm and run the single line from that console, ue to security log-ins etc. The code has produced a set of results, but only for the last server, it probably does the first server, then overwrites it but I am not sure about that. I have done a lot of reading about using arrays, and custom objects, and had a go at doing that, but my scripting skills in PS are not yet up to it. Code: $out = "Ouput_dll_ver_results.csv";foreach ($server in '11.222.33.123', '11.222.33.124') {$VersionInfo = (Get-ChildItem \$server\C$\windows\assembly\GAC_MSIL -recurse -Include abc*.dll,def*.dll,ghi*.dll,jkl*.dll | Where-Object { $.FullName -notmatch "\windows\assembly\temp\" })}; $VersionInfo | %{Get-Command $.FullName} | select -expand File* |Export-Csv $out Can you please advise if/how the above code can be corrected, and if not, what alternatives do I have to get the information I need. Many thanks in advance. Graham

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• Google I/O 2010 - Tech, innovation, CS, & more: A VC panel

  Google I/O 2010 - Tech, innovation, CS, & more: A VC panel Google I/O 2010 - Technology, innovation, computer science, and more: A VC panel Tech Talks Albert Wenger, Chris Dixon, Dave McClure, Brad Feld, Paul Graham, Dick Costolo What do notable tech-minded VCs think about big trends happening today? In this session, you'll get to hear from and ask questions to a panel of well-respected investors, all of whom are programmers by trade. Albert Wenger, Chris Dixon, Dave McClure, Paul Graham, and Brad Feld will duke it out on a number of hot tech topics with Dick Costolo moderating. For all I/O 2010 sessions, please go to code.google.com From: GoogleDevelopers Views: 329 5 ratings Time: 01:00:20 More in Science & Technology

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• Comment repérer la crème des développeurs ? Pour un docteur en informatique, les programmeurs les plus doués apprennent des langages ésotériques

  Comment repérer la crème des développeurs ? Pour un docteur en informatique, les programmeurs les plus doués apprennent des langages ésotériquesPaul Graham est un investisseur capital-risque et un programmeur Lisp. Il y a neuf ans de cela, ce docteur en informatique diplômé de Harvard soutenait « qu'il serait plus aisé d'avoir des programmeurs intelligents pour travailler sur des projets Python que sur des projets Java ».Une phrase choc qui avait provoqué la polémique, mais Graham a invité tout un chacun à ne pas la prendre au premier degré, expliquant que « ce n'est pas que les programmeurs Java sont idiots, mais les programmeurs Python sont futés. Apprendre un nouveau langage de programmation c...

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• TransactionScope and Connection Pooling

  - by Graham

  Hi, I'm trying to get a handle on whether we have a problem in our application with database connections using incorrect IsolationLevels. Our application is a .Net 3.5 database app using SQL Server 2005. I've discovered that the IsolationLevel of connections are not reset when they are returned to the connection pool (see here) and was also really surprised to read in this blog post that each new TransactionScope created gets its own connection pool assigned to it. Our database updates (via our business objects) take place within a TransactionScope (a new one is created for each business object graph update). But our fetches do not use an explicit transaction. So what I'm wondering is could we ever get into the situation where our fetch operations (which should be using the default IsolationLevel - Read Committed) would reuse a connection from the pool which has been used for an update, and inherit the update IsolationLevel (RepeatableRead)? Or would our updates be guaranteed to use a different connection pool seeing as they are wrapped in a TransactionScope? Thanks in advance, Graham

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• Magento Checkout options

  - by graham barnes

  Hi I want to add some options to my magento, lets say i print on clothing, a customer buys some t-shirts, shirts and jackets from me, it totals to £60+ VAT on the checkout area where i signup and not before I need to add an option where I can add a text box and upload option, can i do this? I ideally then want to add some pricing options if the user has chosen to add some branding to a product or multiple products e.g. if the branding was on the top right of the shirt it will cost £5.00, if on the back it costs £7.00 etc all if possible to be done via the admincp. I also want an option so when they upload their logo for the first time they are charged a one off charge, like a setup fee but If the customer has allready sent in there logo then no charge applies. thanks Graham

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• How to update document object value in loop (Javascript)

  - by Graham

  Hi folks i am a beginer to Java script so appologies if this is a dumb question. I am trying to put the following in a for loop but I can't seem to get it to work. if (rowID==1) { document.form1.class_titleDis_1.value=class_title; } if (rowID==2) { document.form1.class_titleDis_2.value=class_title; } This is what I tried var i=1; for (i=1;i<=2;i++) { document.form1.(class_titleDis_)+i.value=class_title; } I would be really grateful for any suggestions. Graham

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• Sum an Array - Objective-C

  - by Graham

  Hi Guys, I'm just starting out and I'm looking for an easy way to sum a simple array. I've read into apple developer site on key value coding and I don't understand how to apply that to my array or if that's the appropriate way to sum this. My stumbling block with the key value coding is the .keypathToProperty - I can sort of understand that you need a further reference in a 2D array but they don't show the array code, only the keypath to the title of the row so I can't figure it out yet. NSMutableArray *numArray = [NSMutableArray arrayWithCapacity:4]; [numArray addObject:num1]; [numArray addObject:num2]; [numArray addObject:num3]; [numArray addObject:num4]; I appreciate the replies! Thanks Graham

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• Associating File Types with AutoVue Desktop Deployment

  - by [email protected]

  Windows users take for granted that when they double click on a document or design, that it will open up in its application automatically. One of the questions I'm commonly asked is "How can I get the same behavior with AutoVue Desktop Deployment?". It's pretty easy, but there are a few tricks to doing it. Step 1: Download new jvue_direct.bat and icon The first thing you'll need to do is download a slightly modified version of jvue_direct.bat. You can find it here (Document 1075784.1) on Oracle's Support Portal. You also want to download the AV.ico file. This is the icon that will be used for all file types associated with AutoVue. Place both of these files in your <AutoVueInstallDirectory>\bin directory. Step 2: Associate File Types With AutoVue There are two ways to do this. You can do this through the Windows user interface, or you can set up a batch file to do this. Associating File Types Through Windows The way most people associate file types to an application is using the Windows user interface. You've probably tried to open a file type that Windows doesn't recognize and seen this window pop up: Although you can use this dialog to associate that file type with AutoVue, I don't recommend it. I much prefer using a batch file to associate file types with AutoVue. Associating File Types Using A Batch File There are a few good reasons to associate file types using a batch file instead of using the pop-up dialog method: If you have several file types to associate with AutoVue, it's much easier to use a batch file to do them all at once. Doing it through the Windows user interface requires having files of each type available. Using a batch file doesn't require having the files you're associating. Associating file types through the dialog may work well for one person, but what if you're an administrator doing an enterprise wide deployment of AutoVue Desktop Deployment for several hundred users? You don't want to do this manually for each user. You can have one simple batch file that's run on each user's PC to set up all the file types. You can easily associate an icon with the file types you're opening with AutoVue. To use the batch file method follow these steps: Create a file called filetype.bat using a text editor and copy and paste the following into it: @assoc .dwg=AVFile @assoc .jpg=AVFile @assoc .doc=AVFile @ftype AVFile="%~dp0jvue_direct.bat" "%%1" @reg add HKEY_CLASSES_ROOT\AVFile\DefaultIcon /v "" /f /d "%~dp0AV.ico" Change the lines starting with @assoc. Each of these lines associates a file extension with AutoVue. You can have as many @assoc lines as you want. Save this file in your <AutoVueInstallDirectory>\bin directory. Double click this file, or run it from a command prompt. Restart Windows to get the icons to show up. How Does This Work? The first three lines are creating a file type called AVFile. We are associating the extensions .dwg, .jpg, and .doc with this file type. You will want to change these lines when creating your own batch file. For example, to associate Microstation designs, which have extension .dgn, you should delete the @assoc lines above and add the line: @assoc .dgn=AVfile The line beginning with @ftype tells Windows that all AVFile type files should be opened using AutoVue Desktop Deployment. The final line associates the AutoVue icon with these file types. You may need to restart Windows to see the new icons. Warning: One Size Doesn't Fit All When deciding which file types should be associated with AutoVue, remember that there are different types of users using it. Your engineers may be pretty surprised to find that after installing AutoVue, double clicking their .dwg file opens up AutoVue instead of AutoCAD. If you have more than one type of AutoVue user, make sure you've considered what file types each user group will and will not want to be associated with AutoVue. If necessary, create a separate file association batch file for each user type. So that's it. In two simple steps you can double click your favorite designs and have them open automatically in AutoVue Desktop Deployment. I'd love to hear how are you using AutoVue Desktop Deployment. What other deployment tips would you be interested in learning about?

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• Blog/CMS software with editing style like Stack Exchange

  - by Merlyn Morgan-Graham

  I have been updating a Wordpress blog lately and found the turnaround time for content creation and editing is much worse than for Stack Overflow posts. Part of this has to do with being original compositions rather than riffing off a question. But part of it is the software. I am looking for CMS/blog software that has an overall editing experience similar to Stack Overflow. The most important features I'm looking for: Inline editing (mostly) Real-time preview on the same page are all important features for speeding up data entry. Markdown support (with inline and block-level code support) Syntax hilighting The features I must maintain from my self-hosted Wordpress: Somewhat popular/supported software, with extensibility support Self hostable Will work with MySql Wordpress has plugins for all these, but they don't necessarily work together. For example I've found a few markdown-on-save plugins, but I doubt those have a chance of ever supporting inline editing or real time previews. Also the most popular syntax hilighting plugins don't support inline code blocks, and I doubt previews would work with other syntax hilighting methods. If I get a wiki/web page content creation system along with it, or somehow integrate this into GitHub (with all the features I requested) I'll accept those as side benefits :) Formed as a question: Are there any pieces of content creation software for making a blog that support an editing style like Stack Exchange and Stack Overflow? Or magic combinations of Wordpress plugins that offer the same?

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• Are You In The Know About Knowledge?

  - by [email protected]

  "Knowledge is of two kinds. We know a subject ourselves, or we know where we can find information on it." To me, this simple and elegant quote from the great English author Samuel Johnson is a reflection of Oracle's knowledge base strategy. The knowledge base in the My Oracle Support portal (https://support.oracle.com) hosts nearly a half million documents, including how-to instructions, problem-solution descriptions, code samples, FAQs, critical alerts, technical whitepapers, and so on. AutoVue's footprint in the Oracle knowledge base - although relatively small at just around 400 documents - is a steadily-expanding assortment of valuable info. This information is designed to complement what you have already learned from the AutoVue documentation, or in some cases, to examine topics not yet covered in the documentation. Similar to the documentation, the knowledge base is one of the highest-value self-service avenues, since it delivers answers in real-time and is driven by the topics most relevant to customers. There are many different ways to leverage the AutoVue knowledge content, or what Oracle often refers to as "KM Notes": 1. Knowledge Browser: To browse the knowledge hierarchy, click on the 'Knowledge' tab at the top of the My Oracle Support webpage. In the list of product areas at the left, click on 'More Applications', then on 'Oracle AutoVue'. From here, you can either view the full set of KM Notes under the AutoVue product family (AutoVue, VueLink, Web Services, Document Print Services, etc) by clicking on 'All of Oracle AutoVue', or you can drill down further by clicking on 'Enterprise Visualization'. 2. Search: To execute simple keyword searches, use the Search bar at the top-right of the My Oracle Support webpage: 3. Advanced Search: Beside the same Search bar at the top-right of the My Oracle Support webpage, click on the 'Advanced' link in order to increase your control over the search string as well as the product to search against: 4. In your Dashboard: By clicking on the 'Customize' link at the top-right of the Dashboard page in My Oracle Support, you can drag & drop multiple "Knowledge Articles" widgets onto your dashboard. Then, click on the pencil icon at the top-right of the widget to customize it by product. This allows you to keep an active monitor on the most recently updated KM Notes across any product: 5. During SR Creation: As you submit a new Service Request, after entering the product information, SR title, and SR description, you will be presented with a frame at the left containing KM Note suggestions based on the information entered: Let Oracle know what you think! If you like or dislike an article, or would like to comment on how easy/difficult it was to find the article, click on the "Rate this document" link at the bottom of the KM Note. Similarly, during SR creation if one of the suggested KM Notes resolves your question/issue, you can click the "This article solved my problem" link at the bottom of the page. I hope these approaches improve your ability find knowledge content within the My Oracle Support portal, and I encourage you to continue to build your knowledge to further your success with the AutoVue product family.

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• Unity 3D (with Nvidia driver) becomes very slow and laggy

  - by Graham

  How can I prevent my Unity 3D desktop from becoming slow after a while, given that I have an Nvidia Quadro NVS 290 graphics in TwinView mode? The desktop starts out fast on login, but becomes slow / lagging / hesitant / high latency after a while, symptoms being spikes in CPU usage by /usr/bin/X whenever I cause any graphical activity with the mouse or keyboard (e.g. typing, changing tabs, dragging windows). The desktop remains slow even with all windows (except htop in Terminal) and extraneous processes killed. Detail: Changing tabs in Terminal takes about a second, and X spikes to 76% CPU. As I type into Firefox, X spikes to 95% CPU. Dragging Termiinal window, X goes to 70% CPU. Basically, every graphical action sends CPU usage of X through the roof. Device: Nvidia Quadro NVS 290 Driver package: binary driver nvidia-current-updates (280.13-0ubuntu5) Dual Monitors: Pair of DELL UltraSharp 1908FP in TwinView (X screen 2560x1024) OS: Fresh install of Ubuntu 11.10 amd64 Desktop with all updates. Hardware: Dell Precision T5400 Workstation Pastebin of Xorg.0.log Pastebin of xorg.conf Pastebin of nvidia-xconfig -t output (easier to read than xorg.conf) Output of /usr/lib/nux/unity_support_test -p: To obtain the following htop screenshow I typed "asdf" several times in in this text box, alt-tabbed to Terminal and took a screenshot of the high X CPU usage. This also happens when firefox is not running: Quadro NVS 290 has "No" thermal sensor according to sensors-detect: Next adapter: NVIDIA i2c adapter 0 at 2:00.0 (i2c-0) Do you want to scan it? (YES/no/selectively): Client found at address 0x50 Probing for `Analog Devices ADM1033'... No Probing for `Analog Devices ADM1034'... No P robing for `SPD EEPROM'... No Probing for `EDID EEPROM'... Yes (confidence 8, not a hardware monitoring chip) I tried the nouveau driver by disabling the nvidia-current-updates under Additional Drivers, but Ubuntu and xrandr -q fail to detect the second monitor. This may be issue 737349. Funniest thing is that Nouveau wiki says that XRandR 1.2 dual-monitor is supported so it should work with a second monitor.

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• Graphics card recommendation for dual-HD output?

  - by Graham

  I'm going for a dual-HD monitor setup (HDMI or DVI output), running Ubuntu 11.10 64-bit with Unity 3D. What graphics card / video card should I get? Requirements: Dual-monitor output for DVI (mixed-resolution: 1920x1080 and 1920x1200) Or dual-HDMI output, if it works with Ubuntu Smooth desktop compositing and (Chrome) browser and IDE window rendering At least 60fps on fullscreen glxgears (1920x1200 resolution) Supported and non-buggy behaviour in Unity 3D/Compiz Not looking to play games Smooth fullscreen video playback (just because)

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• 12.04 Epson Scanner will not install dependency not met

  - by Howard Graham

  I'm trying to install Epson V100 scanner in 12.04. I downloaded files from Epson: iscan_2.29.1-5~usb0.1.ltdl7_amd64.deb iscan_2.29.1-5~usb0.1.ltdl3_amd64.deb iscan-plugin-gt-s600_2.1.2-1_amd64.deb from Ubuntu Software Center via double click on the file or from the terminal "dependencies not met" error occurs. What can I do. Apparently 12.04 is not able to process these files. Does anyone know where I can download older versions of the above files. I can not access avasys.jp from my location in China.

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• Changing swappiness in sysctl.conf doesn't work for me

  - by Graham

  I'm using 12.04 LTS and can sudo sysctl to set swappiness to 10, but adding vm.swappiness=10 to sysctl.conf doesn't work for me - after I reboot, swappiness still reports 60 (default) I'd like to be able to reduce swaps to my SSD, but can't find a way to do so except manually per session. Modifying sysctl.conf seems to work for most - can anyone advise what I need to check / change to make it work for me too, please?

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