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  • No Wireless In Ubuntu 13.10 (maybe Need Wireless Driver) [duplicate]

    - by viktorhubinette
    This question already has an answer here: No Wireless In Ubuntu 13.10 2 answers hi after updating to ubuntu 13.10 i cant see the wireless networks on the network meny so what should i do ? tell me some commands you need to see to solve the problem. Thanks (i maybe need a wireless driver becouse i installed one when i haved 12.04 becouse i could not connect to wireless before too) i cant connect to wireless that my problem so what do i need to do to get this wireless working again? some outputs lsmod | grep rt1 nothing sudo modprobe rt18192cu FATAL: Module rt18192cu not found. iwconfig eth0 no wireless extensions. lo no wireless extensions. sudo iwlist wlan0 scan wlan0 Interface doesn't support scanning. rfkill list all nothing

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  • Why is a linked list implementation considered linear?

    - by VeeKay
    My apologies for asking such a simple question. Instead of posting such basic question in SO, I felt that this is more apt a question here. I tried finding an answer for this but none of them are logically appealing or convincing to my understanding. Typically, computer memory is always linear. So is the term non linear used for a data structure in a logical sense? If so, to logically achieve non linearity in a linear computer memory, we use pointers. Right? In that case, if pointers are virtual implementations for achieving non linearity, Why would a data structure like linked list be considered linear if in reality the nodes are never physically adjacent?

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  • Seeking questions about creating Microsoft Live Labs Pivot collections

    - by John Conwell
    I've spent the past 3 weeks working a lot with Pivot from Microsoft Live Labs (http://getpivot.com/).  Pivot is a tool that allows you to visually explore data. Its an interesting take on visual data mining. Anyway, I've been writing a lot of code that creates a hierarchy of Pivot collections, where one item in the collection drills down into an entirly new collection. The dev community around Pivot is still very young, so there isnt much tribal knowledge built up yet.  I've spent a lot of time trying to get things to work through trial and error, as well as digging around in Reflector.  But I've finally got a framework built for programatically creating DeepZoom images, Pivot collections, Sparse Images, etc.   If anyone has any questions, or suggestions on a post topic, leave a comment and I'll try and answer your question.

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  • Configuration of the network manager via DBus: how to set the ad hoc mode

    - by Andrea
    I have an hard nut to crack: a nice bottle of italian Chianti wine to the solver! :) To automatically configure Wifi, I first have to kill the network manager and than activate the wifi via the commandline: I do this all automatically in my application and works great. However... it is not the right way to do this. As the user has no network gui anymore to configure some other network access. A much better and transparent way would be to configure wifi directly via network manager over the DBus interface. I was able to configure it, but I wasn't able to set it to ad hoc mode... Searching the web for a while: a lot about configuration in general but nothing related to ad hoc mode. I think the only way to do figure that out is to look into the source code of the network manager...maybe someone already did it and he can answer.

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  • which kernels can I safely purge?

    - by ecoologic
    I use the main answer of this question quite often to clear some space, but now I'm in extreme need and I'd like to better understand which kernels are safe to purge, my list is the following 10:50:58-673 - ~> dpkg -l | grep -Eo "^.i +linux-(image|headers)[^ ]+" | cut -c 5- | grep --color -E "$|"`uname -r` linux-headers-2.6.38-15 linux-headers-2.6.38-15-generic linux-headers-2.6.38-15-generic-pae linux-headers-2.6.38-16 linux-headers-2.6.38-16-generic linux-headers-2.6.38-16-generic-pae # current one linux-headers-generic linux-headers-generic-pae linux-headers-server linux-image-2.6.38-15-generic-pae linux-image-2.6.38-16-generic-pae linux-image-generic-pae linux-image-server Is it enough to keep linux-headers-2.6.38-15 linux-headers-2.6.38-15-generic linux-headers-2.6.38-15-generic-pae linux-headers-2.6.38-16 linux-headers-2.6.38-16-generic linux-headers-2.6.38-16-generic-pae # current one Or would this be enough linux-headers-2.6.38-15-generic-pae linux-headers-2.6.38-16-generic-pae # current one Or which other would be the shortest (keeping the previous one too)? And why?

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  • Do you have an address column somewhere in your database?

    - by shay.shmeltzer
    Do you have an address column somewhere in your database? If the answer is yes - then the Web seminar I'm going to run together with the guys from Navteq on May 26th, might be of interest to you. You see, we all have geographical related information in our database, but many of us don't actually use this to do any geographical type of operations/representation with it. Well once you attend the "Add Maps to Your Java Applications - the Easy Way" seminar this might change. In the seminar we'll give you a quick overview of the Spatial related capabilities of the Oracle DB, Middleware and tools. And a demo showing you how easy it is to actually get data to show up on a map in your application and to interact with it. So register today, and mark your calendar.

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  • Xubuntu, LXDE, USB Booting

    - by Kosciak
    Welcome, My problem appeared today - I was using Xubuntu for a long time, but find out that LXDE should be faster than Xfce, so I installed it. After installing I followed tutorial for removing Xfce, cause disk in my computer is very small and I wanted to release some free space. I used command from this tutorial: How to remove xubuntu-desktop? but instead of remove I entered purge command… and rebooted at the end. And I uninstalled whole my things. The problem is in installing system again - it's old Sony Vaio laptop (PCG-GR250) and I have broken CD-DVD drive. It's possible to boot from USB? I can access recovery mode, will this help me? Please answer fast, because it's my brother computer, and his going to kill me if I won't fix this fast :(

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  • what's wrong with this Lua code (creating text inside listener in Corona)

    - by Greg
    If you double/triple click on the myObject here the text does NOT disappear. Why is this not working when there are multiple events being fired? That is, are there actually multiple "text" objects, with some existing but no longer having a reference to them held by the local "myText" variable? Do I have to manually removeSelf() on the local "myText" field before assigning it another "display.newText(...)"? display.setStatusBar( display.HiddenStatusBar ) local myText local function hideMyText(event) print ("hideMyText") myText.isVisible = false end local function showTextListener(event) if event.phase == "began" then print("showTextListener") myText = display.newText("Hello World!", 0, 0, native.systemFont, 30) timer.performWithDelay(1000, hideMyText, 1 ) end end -- Display object to press to show text local myObject = display.newImage( "inventory_button.png", display.contentWidth/2, display.contentHeight/2) myObject:addEventListener("touch", showTextListener) Question 2 - Also why is it the case that if I add a line BEFORE "myText = ..." of: a) "if myText then myText:removeSelf() end" = THIS FIXES THINGS, whereas b) "if myText then myText=nil end" = DOES NOT FIX THINGS Interested in hearing how Lua works here re the answer...

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  • Resources for Virtual Machine programming

    - by good_computer
    I am a beginner (a little more than that) programmer of C. I am really interested in the field of Virtual Machines. When I read about the Python VM, the PyPy project, the advancements in JVM technology, Google V8, the Erlang VM, I really get excited about these amazing pieces of technology, and really want to get my hands dirty building them or contributing to one of these projects. I need to know.. what are the things (language, concepts, algorithms, math, etc?) I need to know/learn to be able to build a virtual machine any books or other resources that will be helpful career prospects for a virtual machine engineer (but this is least important for me for now) (one more side question: somewhere I'd read something like JVM is on the cutting edge of virtual machine technology -- that it is the most advanced VM so far -- is that true?) Please give me a LONG answer detailing all that you know.

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  • How do I become a programmer and not some guy that can type some C?

    - by Phoxxent
    From what I understand, programming has a lot more to it than learning syntax, that it involves an understanding of what happens under-the-hood and even more. Currently, I am just a guy that can pump out a few loops in Python or C and maybe make a small-scope Zork clone as the hight of skill. So, what can I do to become an actual programmer? How can I find out what I need to know and learn it? I know this has been vaguely asked before, but I kind of want an answer of how as opposed to the whats that I have seen. Would it be nice to know how real programmers define being a programmer? yes. Is that going to actually help me (or anyone else) learn what they need to learn? no. (well, maybe.)

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  • Database for survey

    - by zfm
    One of my job now is to design a database for a survey. Let's say we have a series of questions (web-based), in which one page contains one question. Not every person will be given the same questions, those are based on their previous answers and also randomness. I would like to know whether it is better to have database like this user question answer userX question1 answer1A userX question2 answer2C userX question5 answer5F userY question1 answer1B userY question3 answer3B userY question6 answer6D ... or user q1 q2 q3 q4 q5 q6 userX 1A 2C null null 5F null userY 1B null 3B null null 6D ... My idea here is, using the second approach seems better, however I would like to know whether updating the table is (much) slower than inserting a new row? Also with the first approach, I can omit having some null answers. The total questions given are fix, the client wont add any more question later on. So my question is, what will you do if you were me?

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  • Best practices of texture size

    - by psal
    I wanted to know how should I determine a good texture size ? Currently, I always create UV texture that are 1024x1024px but if I create for example, a big house with a 1024px texture size, it will looks pretty bad. So, should I create different texture size (512, 1024, ...) for different mesh size like this ? : or is it better to always do high-resolution texture and then reduce it in the software (ie : increase the LODBias settings in UDK reduce the size of the texture) ? Thanks for your answer. ps : sorry for my english !

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  • ESSO Webcast Replay with Live Q&A

    - by B Shashikumar
    In our ESSO webcast on Oct 19th, we discussed how Oracle Enterprise Single-Sign On Suite can not only eliminate your password reset and helpdesk headaches but also offers a healthy ROI which enterprises just cannot overlook. In our webcast we discussed how Oracle ESSO Suite can deliver an ROI of 140% within the first year of deployment. Due to popular demand, we are now doing a re-broadcast of this webcast in the European time zone. The webcast will be followed by live Q&A. Matt Berzinski, Product Manager for Oracle ESSO Suite will be on air to answer all of your ESSO and Identity Management questions.  Join us on this webcast to find out how Oracle ESSO Suite Plus can deliver quick wins for your organization. Register here for this webcast.

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  • Any way for ubuntu to use more than one core of i7 cpu on my Asus laptop?

    - by G. He
    Newly installed ubuntu 11.10 on a new Asus U46E laptop. /proc/cpuinfo correctly identified the cpu but shows only one core: processor : 0 vendor_id : GenuineIntel cpu family : 6 model : 42 model name : Intel(R) Core(TM) i7-2640M CPU @ 2.80GHz stepping : 7 cpu MHz : 800.000 cache size : 4096 KB physical id : 0 siblings : 1 core id : 0 cpu cores : 1 apicid : 0 initial apicid : 0 fpu : yes fpu_exception : yes cpuid level : 13 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp lm constant_tsc up arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr pdcm sse4_1 sse4_2 x2apic popcnt aes xsave avx lahf_lm ida arat epb xsaveopt pln pts dts tpr_shadow vnmi flexpriority ept vpid bogomips : 5587.63 clflush size : 64 cache_alignment : 64 address sizes : 36 bits physical, 48 bits virtual power management: I search here and found the answer to one post suggesting remove boot parameter 'nolapic'. However, on my particular laptop, ubuntu won't boot without this nolapic parameter. Is there anyway for ubuntu correly utility the full cpu power?

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  • Looking for a very subtle unit testing example

    - by Stéphane Bruckert
    In the context of Continuous Integration, I need to teach unit testing to a 20-people audience of programmers. Everything will be all right, but I am still trying to find the perfect unit testing example. More than writing tests like a robot, I want to show that unit testing can help prevent very subtle errors. I am thinking of the following scenario to happen when doing a live TDD demo: the test cases would already be written, we would have to write methods together, most of us would naturally have forgotten to handle a specific case for a method, everyone would then be surprised, when seeing that all tests don't pass, the failing test would make us think more and realize that we forgot an important case. My question will probably finish as "too broad" or "not clear what you are asking", but we never know, one of you might have a great idea. Your answer can use Java and JUnit, though any other language will be fine since only the idea will matter.

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  • What is a business problem?

    - by Juha Untinen
    Can you give an example or two of what a business problem is? I hear this word thrown around a lot, but even after searching, I cannot find a clear answer. Especially when it comes to software development. Are any of these classified as a business problem? Convert invoice from format A to format B Send data from Company A database to Company B database Create a program for time reporting Make the financial software retrieve data faster Generate a weekly data transfer volume statistic Or is a business problem something else?

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  • Provocative Tweets From the Dachis Social Business Summit

    - by Mike Stiles
    On June 20, all who follow social business and how social is changing how we do business and internal business structures, gathered in London for the Dachis Social Business Summit. In addition to Oracle SVP Product Development, Reggie Bradford, brands and thought leaders posed some thought-provoking ideas and figures. Here are some of the most oft-tweeted points, and our thoughts that they provoked. Tweet: The winners will be those who use data to improve performance.Thought: Everyone is dwelling on ROI. Why isn’t everyone dwelling on the opportunity to make their product or service better (as if that doesn’t have an effect on ROI)? Big data can improve you…let it. Tweet: High performance hinges on integrated teams that interact with each other.Thought: Team members may work well with each other, but does the team as a whole “get” what other teams are doing? That’s the key to an integrated, companywide workforce. (Internal social platforms can facilitate that by the way). Tweet: Performance improvements come from making the invisible visible.Thought: Many of the factors that drive customer behavior and decisions are invisible. Through social, customers are now showing us what we couldn’t see before…if we’re paying attention. Tweet: Games have continuous feedback, which is why they’re so engaging.  Apply that to business operations.Thought: You think your employees have an obligation to be 100% passionate and engaged at all times about making you richer. Think again. Like customers, they must be motivated. Visible insight that they’re advancing on their goals helps. Tweet: Who can add value to the data?  Data will tend to migrate to where it will be most effective.Thought: Not everybody needs all the data. One team will be able to make sense of, use, and add value to data that may be irrelevant to another team. Like a strategized football play, the data has to get sent to the spot on the field where it’s needed most. Tweet: The sale isn’t the light at the end of the tunnel, it’s the start of a new marketing cycle.Thought: Another reason the ROI question is fundamentally flawed. The sale is not the end of the potential return on investment. After-the-sale service and nurturing begins where the sales “victory” ends. Tweet: A dead sale is one that’s not shared.  People must be incentivized to share.Thought: Guess what, customers now know their value to you as marketers on your behalf. They’ll tell people about your product, but you’ve got to answer, “Why should I?” And you’ve got to answer it with something substantial, not lame trinkets. Tweet: Social user motivations are competition, affection, excellence and curiosity.Thought: Your followers will engage IF; they can get something for doing it, love your culture so much they want you to win, are consistently stunned at the perfection and coolness of your products, or have been stimulated enough to want to know more. Tweet: In Europe, 92% surveyed said they couldn’t care less about brands.Thought: Oh well, so much for loving you or being impressed enough with your products & service that they want you to win. We’ve got a long way to go. Tweet: A complaint is a gift.Thought: Our instinct where complaints are concerned is to a) not listen, b) dismiss the one who complains as a kook, c) make excuses, and d) reassure ourselves with internal group-think that they’re wrong and we’re right. It’s the perfect recipe for how to never, ever grow or get better. In a way, this customer cares more than you do. Tweet: 78% of consumers think peer recommendation is the best form of advertising.  Eventually, engagement is going to eat advertising.Thought: Why is peer recommendation best? Trust. If a friend tells me how great a movie was, I believe him. He has credibility with me. He’s seen it, and he could care less if I buy a ticket. He’s telling me it was awesome because he sincerely believes that it was.  That’s gold. Tweet: 86% of customers are willing to pay more for a better customer experience. Thought: This “how mad can we make our customers without losing them” strategy has to end. The customer experience has actual monetary value, money you’re probably leaving on the table. @mikestilesPhoto: stock.xchng

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  • What's the best platform for blogging about coding? [closed]

    - by timday
    I'm toying with starting an occasional blog for posting odd bits of coding related stuff (mainly C++, probably). Are there any platforms which can be recommended as providing exceptionally good support (e.g syntax highlighting) for posting snippets of code ? (Or any to avoid because posting mono-spaced font blocks of text is a pain). Outcome: I accepted Josh K's answer because what I actually ended up doing was realizing I was more interested in articles than a blog style, getting back into LaTeX (after almost 20 years away from it), using the "listings" package for code, and pushing the HTML/PDF results to my ISP's static-hosting pages. (HTML generated using tex4ht). Kudos to the answers mentioning Wordpress, Tumblr and Jekyll; I spent some time looking into all of them.

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  • Bug Tracking Etiquette - Necromancy or Duplicate?

    - by Shauna
    I came across a really old (2+ years) feature request issue in a bug tracker for an open source project that was marked as "resolved (won't fix)" due to the lack of tools required to make the requested enhancement. In the time elapsed since that determination was made, new tools have been developed that would allow it to be resolved, and I'd like to bring that to the attention of the community for that application. However, I'm not sure as to what the generally accepted etiquette is for bug tracking in cases like this. Obviously, if the system explicitly states to not duplicate and will actively mark new items as duplicates (much in the way the SE sites do), then the answer would be to follow what the system says. But what about when the system doesn't explicitly say that, or a new user can't easily find a place that says with the system's preference is? Is it generally considered better to err on the side of duplication or necromancy? Does this differ depending on whether it's a bug or a feature request?

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  • Wireless does not work anymore after software update with Ubuntu 12.10 on a Dell Latitude E6230

    - by Andy
    I just installed Ubuntu 12.10 on my DELL Latitude E6230, on first boot wifi worked properly but when I updated the software it stopped working. I can't figure out the problem... The wireless network controller is a Broadcom Corporation BCM4313 802.11b/g/n Wireless Lan Controller (rev 01) "lshw -class network" gives, for the above controller: *-network UNCLAIMED description: Network controller product: BCM4313 802.11b/g/n Wireless LAN Controller vendor: Broadcom Corporation physical id: 0 bus info: pci@0000:02:00.0 version: 01 width: 64 bits clock: 33MHz capabilities: pm msi pciexpress bus_master cap_list configuration: latency=0 resources: memory:f7d00000-f7d03fff After reading the answer to another similar question, I edited the file NetworkManager.conf to make "managed=true", but that did not make any difference, it is as if the wireless adapter were not there. In the "Network" setting window, I only see "Wired" and "Network proxy". Wireless has just disappeared: rfkill list all 0: hci0: Bluetooth Soft blocked: no Hard blocked: no and that's it! Nothing about the wireless controller... Any suggestions?

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  • Where are the systray icons for Dropbox in Ubuntu desktop 13.04 (minimal)?

    - by samvv
    I reinstalled Ubuntu desktop using the minimal CD image and the following command: $ sudo apt-get install ubuntu-desktop --no-install-recommends After that I used Ubuntu Software Center to make sure Unity supports application indicators: http://i.imgur.com/bYF162w.png. Everything works great, except for Dropbox. For some reason the icon doesn't appear in the tray, even though the application is running. Steam on the other hand runs just fine, so it seems like there is nothing wrong with the tray itself. According to this post the tray icons should be in /usr/shared/icons/hicolor/22x22/status but it doesn't contain any Dropbox icons. Neither do any of the other resolutions. The answer is a bit outdated, so I'm not entirely sure it is still applicable to the current version of Dropbox. I did the usual thing of reinstalling dropbox with: sudo apt-get purge nautilus-dropbox sudo apt-get install nautilus-dropbox But that didn't solve anything either. Does somebody know how to fix this issue?

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  • Pointing domain away from google

    - by redbeard
    I've already asked this question on google apps support, didnt fet an answer yet, and I am in a bit of a hurry. Need to have that website up by monday. Question: We have a domain registered at 101domain, we used a domain just for google apps, for email, and some services, and domain was never used for website. Now we pointed domain to the local hosting service, set everything like it should be, and pointed back to google from hosting service for gmail and gmail works perfectly. Problem is that we tried to set up a website at hosting service but domain still points to google apps login. Everything looks like it should, we recently bought 2 more domains that are set up the same (we use google apps on them too), the only difference tha I can think of is that we didn't use for apps first. Could this be because CNAME lags behind DNS server change?

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  • Wubi "could not retrieve the required disk image"

    - by Marc
    I tried to download Ubuntu 12.04 through Windows Installer (Wubi), but I get this error message: An error occurred: Could not retrieve the required disk image For more information, please see the log file: c:\user(username)\adddata\local\temp\wubi-12.04-rev266.log I tried to locate the file, but I can't find it, it's probably hidden. I know there's already a similar question asked, but I don't understand proxy thing Downloading error "Could not retrieve the required disk image " I was wondering will I get this same problem if I download via USB stick or CD? I'm running Windows 7 on a laptop. I'm not tech-savvy, so I need clear answer please.

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  • PASS Summit Location Redux

    - by andyleonard
    Introduction To quote Ronald Reagan, " There you go again ." The Professional Association for SQL Server (PASS) is considering locations for future PASS Summits. The apparent answer is: You Can Have The Summit Anywhere You Want... ... as long as it's in Seattle. PASS conducted a survey on this about a year ago, and I commented on the results and PASS' (mis-)interpretation of said results in a post entitled On PASS Summit Locations, Time Will Tell . "It's About Community" I think every member of the...(read more)

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  • Can't set 1280x1024 with Nvidia Geforce 8400 GS

    - by torbengb
    I've just installed 10.04 LTS using the Windows installer. The system hangs during boot; the splash screen is frozen and it accepts neither Ctrl+Alt+F2 nor Ctrl+Alt+Del, only a hard reset. (I'm a linux noob.) When I edit the default Grub boot option to omit quiet splash, it gets to the point saying * setting sensors limit [OK] _ and there it stays. I can only get to the desktop using the Grub recovery boot option, of course with a lower resolution (800x600) but everything else seems to work fine. As I said, this is a new install. The only thing I've done is to use the Update Manager to get everything up to date, and activate the newest Nvidia driver using the "Hardware drivers" window. I had a similar problem when I installed 9.04 a year ago, and at that time posted this question with an answer that worked - this doesn't work with 10.04. Running nvidia-xconfig to create a new xorg.conf didn't fix it either (while in Recovery boot).

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