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• How to debug lack of sound in Asus EEE PC

  - by Kalmar

  I have an Asus EEE PC 1225B with fresh Lubuntu 12.04. And no sound. It doesn't seem to be some common problem, so I have to make some research what's up. I tried running alsamixer, so I know I have Realtek ALC269VB with nothing muted unexpectedly. What can I do next to identify and solve the problem? Additional info: alsamixer shows two cards: HD-Audio Generic and HDA ATI-SB (Realtek ALC269VB); the first one is muted. ~$ aplay ALSA lib pcm_dmix.c:1018:(snd_pcm_dmix_open) unable to open slave aplay: main:682: blad otwierania audio: Nie ma takiego pliku ani katalogu The Polish part can be translated as "error opening audio: There is no such file or directory". ~$ sudo lspci -v | grep -A7 -i "audio" 00:01.1 Audio device: Advanced Micro Devices [AMD] nee ATI Wrestler HDMI Audio [Radeon HD 6250/6310] Subsystem: ASUSTeK Computer Inc. Device 103b Flags: bus master, fast devsel, latency 0, IRQ 44 Memory at feb44000 (32-bit, non-prefetchable) [size=16K] Capabilities: [50] Power Management version 3 Capabilities: [58] Express Root Complex Integrated Endpoint, MSI 00 Capabilities: [a0] MSI: Enable+ Count=1/1 Maskable- 64bit+ Capabilities: [100] Vendor Specific Information: ID=0001 Rev=1 Len=010 <?> -- 00:14.2 Audio device: Advanced Micro Devices [AMD] nee ATI SBx00 Azalia (Intel HDA) (rev 40) Subsystem: ASUSTeK Computer Inc. Device 103b Flags: bus master, slow devsel, latency 32, IRQ 16 Memory at feb40000 (64-bit, non-prefetchable) [size=16K] Capabilities: [50] Power Management version 2 Kernel driver in use: snd_hda_intel Kernel modules: snd-hda-intel

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• How can I use the dualforward parameter in my unity shader to use lightmaps and normal maps together?

  - by Raphaeltm

  I'm using the free version of unity and I would like to combine lightmaps with specularity and normal maps. After doing a -bunch- of research, I've figured out that there doesn't seem to be any easy way to do this in the free version of unity, which doesn't support deferred rendering/easy use of dual lightmaps. However, it looks like it's possible, by writing a custom shader, using the "dualforward" parameter in a shader, switching the lightmapping mode to "dual lightmaps" and turning on "Use in forward ren." (basically, writing a shader that specifies the use of dual lightmaps, which should allow for a combination of lightmaps and normal maps) So I downloaded the source code for the default shaders (because all I need is a normal specular bumped shader) and added "dualforward" to the parameters: Shader "Bumped Specular Dual Lightmaps" { Properties { _Color ("Main Color", Color) = (1,1,1,1) _SpecColor ("Specular Color", Color) = (0.5, 0.5, 0.5, 1) _Shininess ("Shininess", Range (0.03, 1)) = 0.078125 _MainTex ("Base (RGB) Gloss (A)", 2D) = "white" {} _BumpMap ("Normalmap", 2D) = "bump" {} } SubShader { Tags { "RenderType"="Opaque" } LOD 400 CGPROGRAM #pragma surface surf BlinnPhong dualforward sampler2D _MainTex; sampler2D _BumpMap; fixed4 _Color; half _Shininess; struct Input { float2 uv_MainTex; float2 uv_BumpMap; }; void surf (Input IN, inout SurfaceOutput o) { fixed4 tex = tex2D(_MainTex, IN.uv_MainTex); o.Albedo = tex.rgb * _Color.rgb; o.Gloss = tex.a; o.Alpha = tex.a * _Color.a; o.Specular = _Shininess; o.Normal = UnpackNormal(tex2D(_BumpMap, IN.uv_BumpMap)); } ENDCG } FallBack "Specular" } This, however, doesn't seem to work. When I keep the "dualforward" param, every object that uses it seems to be lit by the one directional light in the scene. When I remove the "dualforward" param, it they look like normal lightmapped objects with no normal maps or specularity. I noticed that the support for "dualforward" seems to be new in v.3.4.2, so I made sure to download it (I was running 3.4.1), but it still doesn't work. Anybody have any advice for me?

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• How can I disable recent documents in Unity?

  - by detly

  How do I disable the tracking and display of recently opened files (and whatever else is remembered) in a default installation of Ubuntu 11.10? (Note that this is not a duplicate of How can I keep recent files from appearing in Unity?, since that question and its answers are concerned with temporary and specific filtering. I want to disable it completely for a single user account.) Okay, to deflect the inevitable and expand on my motivation... While trawling the usual forums and Google results for a solution, it (unsurprisingly) seems that the near-universal use cases for this request are either browsing porn or Warhammer research. And the obvious solution to this is to create another user account to contain all evidence. However, this is not why I'm asking, and I don't say that to get all high and mighty about it, it's because this answer won't help. (Even though I really don't have any interest in Warhammer, and I have no idea how that paint pot and brush ended up in my drawer, no that's not glue on my thumb, etc.) My actual use case is that I use my personal laptop for presentations in different circles of my life. I have a user account set up with all the settings I like for presentations (shortcuts, small launcher, default associations, etc). But I don't want an accidental keystroke (or the find dialog) to display other recent presentations I've given, or the files I used in composing the presentation, or whatever. I also don't want to have to recreate this profile for every single presentation I might give. I just want a nice little isolated, memoryless, clean corner of my notebook for public display.

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• Ubuntu 12.04 and Nvidia GTX 550 Ti

  - by Jim

  OK I'm currently trying to install Ubuntu x64 Server 12.04 onto the following machine: Intel Core i5-2320 3.0GHz LGA1155 6MB 8 GB DDR3 RAM, Gigabyte Z68P-DS3 S1155 Intel Z68 DDR3 ATX M/B, OCZ 60 GB SSD, 3x Samsung 2TB drives in a RAID 5 array (via M/B) Now what I think is causing the issue is the following: EVGA GeForce GTX 550 Ti 951MHz 1GB PCI-Express HDMI FPB As the server CD works in text mode I haven't had a problem with actually installing Ubuntu. Partioned with: 1GB /boot SSD, 59GB / SSD, 10GB swap RAID5, ~4TB /home RAID5 On a straight boot, you briefly see the GRUB menu, followed by a blank screen. The keyboard and mouse blink as they are initialised but no sign of life from the screen. Followed by a bit of research (otherwise known as google) ... Booted in quiet splash nomodeset Now I have a fully working linux distro at the command prompt. I then proceed to try and update the nvidia drivers with apt-get (after updating repositories etc) and rebooting. Still the same problem. I also tried reinstalling from the CD and installing said drivers in the install process before GRUB was installed, still the same symptoms. Does anybody have any solutions? I'm at my wits end here, I bought this machine to be a linux server / tinkering machine and have just spent 4-5 hours trying to just get a basic install working.

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• backlight doesn't work on acer 5732z tried everything I can find

  - by Dude Random21

  Ok if you can solve my problem you're really really good. I want to run ubuntu 12.04 on my acer aspire 5732z I know (from research) that these computer's have issues with the backlight on ubuntu. So I tried a couple of solutions: The "sudo lightdm restart" method. I get no change at all. The "sudo setpci -s 00:02.0 F4.B=30" method. This so far has been the most effective, I first tried it in the F1 console right away I get the screen back, problem is going back to the desktop it goes back to being black. So I tried it from a terminal window and it works as well but as soon as I unplug my external monitor the screen turns black again and doesn't come back. If I plug the monitor back in the screen stays black and the only thing I see is the mouse pointer. From here I go back into console (which I am able to see) and reboot from there. The "sudo sed -i 's/GRUB_CMDLINE_LINUX=""/GRUB_CMDLINE_LINUX="acpi_osi=Linux"/g' /etc/default/grub" method. This one I got no instant change and after reboot still no change. I'm open to pretty much any suggestions you may have.

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• Running Ubuntu Server from a USB key / thumb drive (being mindful of flash's write limitations)

  - by andybjackson

  Having become disillusioned with hacking Buffalo NAS devices, I've decided to roll my own home server. After some research, I have settled on an HP Proliant Microserver with Ubuntu Server and a ZFS RAID-Z array for data. I settled on this configuration after trying and regretfully rejecting FreeNAS because the Logitech Media Server (LMS) software isn't available on the AMD64 flavour of this platform and because I think Debian/Ubuntu server is a better future-proof platform. I considered Open Media Vault, but concluded that it isn't quite yet ready for my purposes. That said, FreeNAS does include the option to run itself off a 2GB+ flash device like USB key or thumb drive. Apparently FreeNAS is mindful of the write limitations of flash devices and so creates virtual disks for running the OS, writing only the required configuration information back to flash. This would give me an extra data drive slot. Q: Can Ubuntu Server be configured sensibly to run off a flash device such as a USB key/thumb drive? If so, how? The write limitations of flash should be accounted for.

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• How do I use an API?

  - by GRardB

  Background I have no idea how to use an API. I know that all APIs are different, but I've been doing research and I don't fully understand the documentation that comes along with them. There's a programming competition at my university in a month and a half that I want to compete in (revolved around APIs) but nobody on my team has ever used one. We're computer science majors, so we have experience programming, but we've just never been exposed to an API. I tried looking at Twitter's documentation, but I'm lost. Would anyone be able to give me some tips on how to get started? Maybe a very easy API with examples, or explaining essential things about common elements of different APIs? I don't need a full-blown tutorial on Stack Overflow; I just need to be pointed in the right direction. Update The programming languages that I'm most fluent in are C (simple text editor usually) and Java (Eclipse). In an attempt to be more specific with my question: I understand that APIs (and yes, external libraries are what I was referring to) are simply sets of functions. Question I guess what I'm trying to ask is how I would go about accessing those functions. Do I need to download specific files and include them in my programs, or do they need to be accessed remotely, etc.?

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• Leaving the field of programming. What are the options?

  - by hal10001

  A lot of graduates ask about getting into this field, but I know there are times when I (as well as many others) think about leaving, too. My issue is that I love solving problems and the act of creating something that people enjoy using, and that is what keeps bringing me back. Lately, though, programming has become less of the act of creation and about solving problems, and has become more about being "a monkey at a keyboard". Can you offer any advice with regard to: What fields would offer equivalent problem-solving challenges consistently? How you would go about doing the research, or considering the career change? Basically anything else you think would be helpful in this situation. EDIT: I guess I should clarify and say that I've been in the field about 10 years, and I have had my fair share of working environments. The place where I am at now, and even the previous two jobs, the people I worked with have been great. I've been very lucky in that respect. I'm beginning to wonder if the next step for me has little to do with actual programming and more to do with business analysis or strategic consulting. I would hate to get too much onto the business side of things though, as I like being around tech folks more.

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• Python Web Applications: What is the way and the method to handle Registrations, Login-Logouts and Cookies? [on hold]

  - by Phil

  I am working on a simple Python web application for learning purposes. I have chosen a very minimalistic and simple framework. I have done a significant amount of research but I couldn't find a source clearly explaining what I need, which is as follows: I would like to learn more about: User registration User Log-ins User Log-outs User auto-logins I have successfully handled items 1 and 3 due to their simple nature. However, I am confused with item 2 (log-ins) and item 4 (auto-logins). When a user enters username and password, and after hashing with salts and matching it in the DB; What information should I store in the cookies in order to keep the user logged in during the session? Do I keep username+password but encrypt them? Both or just password? Do I keep username and a generated key matching their password? If I want the user to be able to auto-login (when they leave and come back to the web page), what information then is kept in the cookies? I don't want to use modules or libraries that handle these things automatically. I want to learn basics and why something is the way it is. I would also like to point out that I do not mind reading anything you might offer on the topic that explains hows and whys. Possibly with algorithm diagrams to show the process. Some information: I know about setting headers, cookies, encryption (up to some level, obviously not an expert!), request objects, SQLAlchemy etc. I don't want any data kept in a single web application server's store. I want multiple app-servers to be handle a user, and whatever needs to be kept on the server to be done with a Postgres/MySQL via SQLAlchemy (I think, this is called stateless?) Thank you.

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• How do I use an API?

  - by GRardB

  Background I have no idea how to use an API. I know that all APIs are different, but I've been doing research and I don't fully understand the documentation that comes along with them. There's a programming competition at my university in a month and a half that I want to compete in (revolved around APIs) but nobody on my team has ever used one. We're computer science majors, so we have experience programming, but we've just never been exposed to an API. I tried looking at Twitter's documentation, but I'm lost. Would anyone be able to give me some tips on how to get started? Maybe a very easy API with examples, or explaining essential things about common elements of different APIs? I don't need a full-blown tutorial on Stack Overflow; I just need to be pointed in the right direction. Update The programming languages that I'm most fluent in are C (simple text editor usually) and Java (Eclipse). In an attempt to be more specific with my question: I understand that APIs (and yes, external libraries are what I was referring to) are simply sets of functions. Question I guess what I'm trying to ask is how I would go about accessing those functions. Do I need to download specific files and include them in my programs, or do they need to be accessed remotely, etc.?

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• Windows 8 and Cisco AnyConnect client issue

  - by Enrique Lima

  As many of us are doing these days, I have fully moved to Windows 8 on my PCs (laptops and desktops).  And in my role as a consultant I work with many clients, many of them use different vpn technologies.  While pretty much every single vpn client I had installed needed a trick or two to work, well Cisco’s AnyConnect vpn client had some issues.  Installation went well, no problem there.  The problem appeared when I attempted to connect, as I received the following message: Pretty clear what the issue is, right? right??!!?? Doing a bit of research (Google knows!), I cam across the following fix: Using our new favorite shortcut:  Windows Key + X Then Run > regedit. We then Navigate to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\vpnva From the image you can tell there are additional characters in the DisplayName that interfere with the device being able to be correctly identified. This is what it looks like originally. We will remove those characters so it looks more like: Close all open windows and attempt your connection.

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• IDC Recommends Oracle Solaris 11

  - by user12611852

  IDC published a research report this week on Oracle Solaris 11 and described it as "Delivering unique value."  The report emphasizes the ability of Oracle Solaris to scale up and provide a mission critical platform for a wide variety of computing. Solaris built-in server and network virtualization helps to lower costs and enable consolidation while reducing administration costs and risks. Learn more about Oracle Solaris and the recently announced 11.1 update. In their conclusion, IDC reports: Today, Oracle is a multi-OS vendor that is adjusting to the opportunities presented by a significantly expanded product portfolio. The company has a long history of supporting Unix operating systems with its broad product portfolio, but the main difference is that now Oracle has direct control over the destiny of the Solaris operating system. The company has made a strong commitment to Solaris on both SPARC and x86 systems, as well as to Linux on x86 systems, and expects to continue to enhance Oracle Solaris 11 with update releases once a year as well as Solaris 12, which is already on the road map. Oracle is working to help its customers understand its strong commitment to Oracle Solaris and the product's role as a single operating system that runs on both SPARC and x86 processors. While Oracle Solaris and Oracle Linux are critical assets, the company's crown jewel is the deep collection of software that runs on top of both Oracle Solaris and Oracle Linux, software that creates a robust application environment. The continuing integration and optimization of the software and hardware stack is a differentiator for Oracle and for customers that run an Oracle Solaris stack.

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• Reduce weight in healthy way

  - by krnites

  This post is my daily summary of activities that I am going to take to reduce my overall weight by 15 lbs. I am not an overweight person as per my height of 5.11 I have decent weight of 178.4 and good body build. But from a long time(approx 3 month) I am thinking of getting 2-3 abs (note not 6 abs) and reducing my weight to below 170 ( which I was 2 years ago). This post will work as my daily diary of what I ate, what exercises I did, what apps/software I used to monitor my weight loss. Sometime it will not contain much information but some time when I will research will contain information for people who really want to reduce weight. My current target for next few week is to run 2.5 miles everyday under 30 minutes. Eat a lot of fruits and vegetable. No burger or tacos. No meat either fat or lean. And checking body weight after every four hour. Here are reading for today10:00 AM  - 178.22:00 PM    - 178.4I have already ran for 2 miles in 25 minutes, did a little bit of shoulder exercise and had eaten small bowl of vegetable biryani and two bread.I hope this post and all coming post will give the reader the first hand experience of a person who had read every blog and articles related to reducing weight and now trying to do it by implementing all of them by self. My approach will be a healthy way of reducing weight, I am not going to starve my self or going to eat only fruits all day. I will enjoy all the food item that I like to eat and will work hard on my body. This way I will / reduce the weight naturally and will increase the flexibility, durability and immunity of my system /body.

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• Beginners guide to developing optimization software

  - by Florenc

  I am novice in "serious" programming i.e. applications that deal with real-life applications and software projects that go beyond school assignments. My interests include optimization, operations research, algorithms and lately i discovered how much I do like software design/development/engineering. I have already developed some simple desktop applications for some "famous" problems like TSP using heuristc approaches, a VRP solver (in progress) and so on. While developing this kind of software I actually used basic concepts taught at school such as object-orientation analysis and design. But, I found these courses rather elementary and quite boring (for my expectations). So I decided to go a little further and start developing "real" software (and this is where I realized how important and interesting software engineering/design is.) Now, here's my issue: I can not find a "study guide" for developing software of this kind. Currently, there are numerous resources out there (books, websites, tutorials) in designing and developing complex IS, web applications, smartphone apps but I can't find a book for example entitled "optimization software development". Definetly, someone could claim that "design patterns apply to software in general" but that's not my point. My point is that I could simply use my imagination for "simple" implementations, but what happens, when my imagination can not go further? In other words I'm looking for a guide/path to bridge the gap between: Mathematics-Algorithm Design-Software Engineering-Optimization-Software development

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• Homepage not showing on Google

  - by MIke Mayberry

  About six weeks ago my homepage (mayberrykayakingdotcodotuk) disappeared from the google organic search for "kayaking pembrokeshire" despite it having been number 2 within a few weeks of it's launch last summer. My previous site (www.mikemayberrykayakingdotcodotuk) had been 2nd for about six years and has 301 redirects for all pages to the new site. Google toolbar still rates the homepage as 3/10 and the domain is still showing in search results, just not the homepage. A little research suggests that this is most likely to be due to an issue with google treating two pages as identical content (one with www. and one with not) since the changes in their algorithms around that time and that the way to fix this is to add some code somewhere. This makes sense to me as my print advertising doesn't have the www part of the address. I have cpanel access but a limited knowledge on web coding, having picked things up as I've gone along and paid for designers etc., when needed. Would someone be able to let me know where I have to go to add the code and what code I need to add to redirect the crawlers to one page? Or is there another issue that is causing this? Thanks in advance.

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• Problem with a* implementation in pygame

  - by piyush3dxyz

  Yesterday i decide to make RTS game in pygame(pygame is best).I figured out many components of RTS game like unit selecting,health,resources but only 1 thing i still not understand.. which is a* pathfinding in pygame... I also done little bit of research on wiki,articles and papers...but still cant figure out problem.... function A*(start,goal) closedset := the empty set // The set of nodes already evaluated. openset := {start} // The set of tentative nodes to be evaluated, initially containing the start node came_from := the empty map // The map of navigated nodes. g_score[start] := 0 // Cost from start along best known path. // Estimated total cost from start to goal through y. f_score[start] := g_score[start] + heuristic_cost_estimate(start, goal) while openset is not empty current := the node in openset having the lowest f_score[] value if current = goal return reconstruct_path(came_from, goal) remove current from openset add current to closedset for each neighbor in neighbor_nodes(current) if neighbor in closedset continue tentative_g_score := g_score[current] + dist_between(current,neighbor) if neighbor not in openset or tentative_g_score <= g_score[neighbor] came_from[neighbor] := current g_score[neighbor] := tentative_g_score f_score[neighbor] := g_score[neighbor] + heuristic_cost_estimate(neighbor, goal) if neighbor not in openset add neighbor to openset return failure here is the pseudocode for wiki a* implementation......

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• Managed Cloud Services Wins Another Prestigious Industry Award

  - by Dori DiMassimo-Oracle

  Over the last 90 days, Oracle Managed Cloud Services has been the proud recipient of TWO prestigious industry awards for service excellence and customer value leadership.  The most recent award is last month's 2014 Frost & Sullivan Best Practice Award - North America Managed Cloud Customer Value Leadership Award, which rated Oracle Managed Cloud Services as the clear leader versus other providers; Managed Cloud received an "exceptional" rating in 9 of 10 evaluation categories.  The research report  is an excellent look at our industry and what is valued by cloud customers looking for a managed solution.   In April, Managed Cloud was a repeat winner of the Outsourcing Excellence Award - 2014 Outsourcing Excellence Award - Best ITO Infrastructure (Sony Computer Entertainment America).  Last year we won the award for Best Cloud: 2013 Outsourcing Excellence Award - Best Cloud (Take-Two Interactive)  These awards are a great testimony of the transformation of Managed Cloud Services to a true Cloud-based business and a strategic and relevant part of the Oracle Cloud Solutions portfolio.  Frost & Sullivan, in particular, recognizes our vision and our capability of successfully managing business transactions in the cloud.

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• Custom LightDM sessions to launch an application

  - by zachtib

  I'm trying to set up Ubuntu to act as a kiosk running a custom application, and am trying to get a LightDM session built to automatically start it. Ideally, I'd like to have two sessions available from LightDM. The default would start my application fullscreened, and the other would open a minimal desktop in case any configuration (mostly connecting to a wireless network) needed to be done. I've done a lot of research over the last week on custom LightDM & Gnome sessions. I've got a custom greeter written for LightDM that can start either session, but I can't figure out how to add a specific application to the Gnome session that is ultimately started without just putting a launcher in the global startup directory, and I don't want to do that since I don't want the application starting when they open "configuration mode". Another problem I've run into on my current workaround is that the application doesn't fullscreen properly, which makes me think I'm not starting enough of a gnome session (currently it's just metacity, no panel or anything else). Edit: I found a solution. See http://www.webupd8.org/2011/11/make-applications-autostart-only-in.html

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• Most suited technology for browser games?

  - by Tingle

  I was thinking about making a 2D MMO which I would in the long run support on various plattforms like desktop, mac, browser, android and ios. The server will be c++/linux based and the first client would go in the browser. So I have done some research and found that webgl and flash 11 support hardware accelerated rendering, I saw some other things like normal HTML5 painting. So my question is, which technology should I use for such a project? My main goal would be that the users have a hassle free experience using what there hardware can give them with hardware acceleration. And the client should work on the most basic out-of-the-box pc's that any casual pc or mac user has. And another criteria would be that it should be developer friendly. I've messed with webgl abit for example and that would require writing a engine from scratch - which is acceptable but not preferred. Also, in case of non-actionscript, which kind language is most prefered in terms of speed and flexability. I'm not to fond of javascript due to the garbage collector but have learned to work around it. Thank you for you time.

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• Oracle Solaris 11 How To Guides

  - by glynn

  Over the past year or so I've been writing a lot of How To Guides for different technologies. While we have really excellent product documentation (including the best set of manual pages available on any UNIX or Linux platform), the various How To Guides we have help to complement some of that learning, giving administrators a chance to learn the motivations for different technologies with a simple set of examples. Not only are they fun to research and write, they're also one of the more popular items on our Oracle Solaris 11 technology pages on OTN. So here's a link to bookmark and come back to on a regular basis: Oracle Solaris 11 How To Guides. We've got an excellent line up of articles there, and below is a list of the ones I've been involved in writing. Let us know if there are technologies that you think a How To Guide would help with and we'd be happy to get them onto our list! TitleLink Taking your First Steps with Oracle Solaris 11An introduction to installing Oracle Solaris 11, including the steps for installing new software and administering other system configuration. Introducing the basics of IPS on Oracle Solaris 11How to administer an Oracle Solaris 11 system using IPS, including how to deal with software package repositories, install and uninstall packages, and update systems. Advanced administration with IPS on Oracle Solaris 11Take a deeper look at advanced IPS to learn how to determine package dependencies, explore manifests, perform advanced searches, and analyze the state of your system. How to create and publish packages with IPS on Oracle Solaris 11How to create new software packages for Oracle Solaris 11 and publish them to a network package repository. How to update your Oracle Solaris 11 systems using Support Repository UpdatesThe steps for updating an Oracle Solaris 11 system with software packages provided by an active Oracle support agreement, plus how to ensure the update is successful and safe. Introducing the basics of SMF on Oracle Solaris 11Simple examples of administering services on Oracle Solaris 11 with the Service Management Facility. Advanced administration with SMF on Oracle Solaris 11Advanced administrative tasks with SMF, including an introduction to service manifests, understanding layering within the SMF configuration repository, and how best to apply configuration to a system.

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• Any danger in using the Wine workaround in 12.04?

  - by TrailRider

  To run certain Windows programs in WINE you need to this workaround: echo 0|sudo tee /proc/sys/kernel/yama/ptrace_scope According to the support websites, this is due to a bug in the Ubuntu kernel that prevents ptrace and WINE playing well together. Using the above command you set the ptrace to 0 which according the research I've done(don't ask me which websites, I have seem a lot of them), ptrace has to do with the interactions between programs. The 0 setting is more permissive than the 1. I have to assume that there was a good reason Ubuntu wanted the ptrace=1 so this leads me back to the short form of the question. Are there any risks involved in setting ptrace=0. Lower security? problems debugging? any others that I haven't thought of??? P.S. for anybody reading this that wonders what the bug causes, the Windows programs will fail to open at all, in the System Monitor you will see many instances of the program trying to open and then they will eventually all quit and if you run the progam for the terminal you will get an error that tells you that the maximum number of program instances has been reached.

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• Should I avoid or embrace asking questions of other developers on the job?

  - by T.K.

  As a CS undergraduate, the people around me are either learning or are paid to teach me, but as a software developer, the people around me have tasks of their own. They aren't paid to teach me, and conversely, I am paid to contribute. When I first started working as a software developer co-op, I was introduced to a huge code base written in a language I had never used before. I had plenty of questions, but didn't want to bother my co-workers with all of them - it wasted their time and hurt my pride. Instead, I spent a lot of time bouncing between IDE and browser, trying to make sense of what had already been written and differentiate between expected behavior and symptoms of bugs. I'd ask my co-workers when I felt that the root of my lack of understanding was an in-house concept that I wouldn't find on the internet, but aside from that, I tried to confine my questions to lunch hours. Naturally, there were occasions where I wasted time trying to understand something in code on the internet that had, at its heart, an in-house concept, but overall, I felt I was productive enough during my first semester, contributing about as much as one could expect and gaining a pretty decent understanding of large parts of the product. I was wondering what senior developers felt about that mindset. Should new developers ask more questions to get to speed faster, or should they do their own research for themselves? I see benefits to both mindsets, and anticipate a large variety of responses, but I figure new developers might appreciate your answers without thinking to ask this question.

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• Can certain system-hungry modules be disabled in Ubuntu?

  - by Ole Thomsen Buus

  Hi, Let me add some context: I am currently using Ubuntu 9.10 64-bit (Desktop) on a relatively powerful stationary PC (Intel Core i7 920, 12GB ram). My purpose is highspeed imaging with a pointgrey Grashopper machine-vision camera (for research, PhD project). This camera is capable of 200 fps at full VGA (640x480) resolution. The camera is connected using Firewire (1394b) and the drivers and software from Pointgrey works great. I have developed a console C++ application that can grap a certain number of frames to preallocated memory and after this also save the grapped frames to harddrive. Currently it works fine but sometimes I am observing a few framedrops (1-3). When this happens I reset the experiment and repeat the recording and usually i am lucky the second time with no framedrops (the camera-driver has a internal framecounter that I am using). Question: I usually go to tty1 and use "sudo service gdm stop" to disable the graphical frontend. It seems to release some memory though that is not my main concern. My concern is CPU resources. Are there other system hungry modules that can be disabled temporarily such that the CPU gets less busy on Ubuntu 9.10? At some point in the future I will update to 10.10. Should I perhaps option for the server edition instead? Thanks.

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• What are the most necessary non-language specific things a programmer needs to know?

  - by Josh

  I've been thinking about this a lot lately. Right now I work at a little web company, am almost done with school, and have written an iPhone app, but I'm not sure what else I need to focus my learning energies on. I've decided I want to do software programming, so I've been actively reading everything I can get my hands on that deals with Objective-C / C++ (Cocoa, OpenGL, etc). But those are not the things I'm talking about. I know I need to "master" a language or two. What I'm talking about are the other "things". Things such as learning and using source control, design patterns, etc. What thing (or things, just one per response), would you say I should concurrently be focusing on? You can consider in your answer that I'm wanting to do the aforementioned career path, but you don't have to. I just want a nice list of things to research, and actually use in my career. Also, can someone help me with tagging this? I'm not sure what exactly would be a good tag for such a question.

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• Incompleted ubuntu 12.04 install dual-boot xp

  - by Mike

  This weekend has been the 1st time i've tried to install ubuntu. On the initial install, (I am using a USB) the installation went all the way through and asked to restart when completed. I was not able to get grub to boot and kept going through windows. After some research I found some articles on updating/reinstalling grub, so I followed those. I finally got grub to load after a day but there was no windows option only the Ubuntu 12.04 which when I selected it only gave me a fatal error 17. I booted from the usb again and deleted the partitions and installed again. This time I got an error 15. I then booted through xp and downloaded the WUBI.exe and uninstalled ubuntu and reinstalled again. The installation went to the very end and then gave an error message (which I don't remember exactly what it said) something along the lines of checking my logs on my C drive. I then uninstalled ubuntu and removed the wubi.exe file and wiped my usb and did the download to the usb again. Booted through usb and ran the install process again. It again went through the install process but after creating username and password and hitting continue the installation dialogue box disappears and the mouse spinning wheel is displayed but I do not receive the prompt to restart. I can still access the side menu for ubuntu but the wheel keeps spinning. How to I get Ubuntu to install properly

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