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• As a Qt GUI programmer, how to improve (career & skill)?

  - by linjunhalida

  hello, I'm a python & Qt programmer, and my daily job is create small PC GUI programs ship with hardware devices. the problem is, My job is simple, read/write data to device by using serial port(pyserial), display and edit data(PyQt + PyQwt), that's all. although I'm a linux user, my program is running under windows XP, but thanks to PyQt, I can still develop under linux. And I'm always afraid of being replaced by the people cheaper and younger than me in the future. (I'm 26 now.. not too much time for playing..) So I need improve myself, and make me more competitive in the global market, and I like programming, and want coding till the end of my life. any roadmap suggestion?

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• How to deploy a single website to multiple physical servers.?

  - by user70122

  I want to deploy my PHP and Ajax based Dating website to multiple physical servers. Does anyone know the method. Is there possible any method to save the files and setting (and also the user input), on all of the physical server, so that the servers do the following jobs. Servers used as a network, speeding up the process giving a robust thing to the end user. Data to be stored on all the servers' hard drivers, and Every server have the internet connection from different provider, so for example a. if any of the internet providers gets down, or b. there occur any hardware or power failure, the website still runs, without a break and without any data loss. Does anyone know about some online course, or some comprehensive tutorials about this topic ?

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• RPi and Java Embedded: Hard-Float Support is Here!!!

  - by hinkmond

  You wanted Java Embedded with Hardware Floating Point support to install on a default Raspian environment for your Raspberry Pi? Well, you just got your wish. Merry Christmas! See: Developer JDK 8 for ARM w/Hard-Float Here's a quote: The Java SE 8 Developer Preview Release for ARM including JavaFX (JDK 8) on Linux has been made available at http://jdk8.java.net. The Developer Preview is provided to the community to get feedback on the ongoing progress of the project. Developers can start developing applications using this build of Java SE 8 on an ARM device, such as the a Raspberry Pi. It's a regular JDK (Java SE 8 preview) for your Raspberry Pi, so you should note this means there is a javac (and the other typical JDK tools) available to compile your Java apps right there on the device! Woot! I'll cover step-by-step instructions how to do that in a future blog post. Stay tuned... Hinkmond

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• Why Android for new (micro) consoles?

  - by Klaim

  There are a lot of new (micro) consoles with Android inside coming soon or already there (OUYA for example). My question is: why use Android and not another OS as base for these consoles? I assume that there are pragmatic answers to this but I can't see any clear killer feature. For example, one can assume that any stable Linux distribution would work (like Valve seem to think). Android is primarily targetted at mobile platforms which mean it is built around the idea of being interrupted which goes against a lot of what console devs needs in new hardware - but is not killing Android as a platform for gamedev either as it's just a constraint. Why not another OS? What's the Android killer features that make micro-console builder using it instead of Linux or anything else?

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• How can I get gcc to write a file larger than 2.0 GB?

  - by fred.bear

  I wanted to recompile 'xxd' (written in C), so I installed CodeBlocks as the IDE. All seemed to go well unil I discovered that I couldn't write past the 2.0 GB barrier... I've read that 'gcc' needs to be recompiled... (That sounds a bit dramatic..) I've read that I can use 'fread64()' instead of 'fread()' ... (didn't work) I've read something about a compiler options (?)... but I get lost at that point? I am surprised that it didn't work out-of-the-box, as I thought the 2.0 GB limit was ancient history as far as defaults go ... wrong again?:( My OS is 32-bit, on 32-bit hardware. The gcc version report in as: gcc (Ubuntu 4.4.3-4ubuntu5) 4.4.3 Is there a simple way around this issue? PS.. I was fascinated by the WARNINGS: section of 'info xxd' (..only on Linux ;)

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• Managed servers getting down regularly by Node Manager. WAD?

  - by csoto

  Recently I have been working on a service request where several instances were running, and several technologies were being used, including SOA, BAM, BPEL and others. At a first glance, this may seem to be a Node Manager problem. But on this situation, the problem was at JMS - Persistent Store level. Node Manager can automatically restart Managed Servers that have the "failed" health state, or have shut down unexpectedly due to a system crash or reboot. As a matter of fact, from the provided log files it was clear that the instance was becoming unhealthy because of a persist6ent Store problem. So finally, the problem here was not with Node Manager as it was working as designed, and the restart was being caused by the Persistent Store. After this Persistent Store problem was fixed, everuthing went fine. This particular issue that I worked was on an Exalogic machine, but note that this may happen on any hardware running Weblogic.

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• Is it possible to update my graphic card drivers?

  - by madmaxpt

  This is what the lspci -v command shows in the VGA compatible controller section: 00:02.0 VGA compatible controller: Intel Corporation Atom Processor D4xx/D5xx/N4xx/N5xx Integrated Graphics Controller (prog-if 00 [VGA controller]) Subsystem: Dell Device 048e Flags: bus master, fast devsel, latency 0, IRQ 44 Memory at f0200000 (32-bit, non-prefetchable) [size=512K] I/O ports at 18d0 [size=8] Memory at d0000000 (32-bit, prefetchable) [size=256M] Memory at f0000000 (32-bit, non-prefetchable) [size=1M] Expansion ROM at <unassigned> [disabled] Capabilities: <access denied> Kernel driver in use: i915 Kernel modules: i915 i915 is only compatible with OpenGL 1.4 and cannot use shaders and I'd like to use some Open GL 2.0 functionalities. Is it possible to update the drivers or is my hardware limited to OpenGL 1.4 ?

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• 12.04 Software "RAID 0" on desktop replacement, 2 HDD?

  - by gregzeng

  Hardware: HP Pavilion DV7 notebook: 8GB DDR3, 2x 750GB SATA2 HDD, I7 c+ Radeon GPU, eSATA, Bluray, etc. Currently multiboot with Win7-64 + choice of 5 'buntu-64. Prefer Xubuntu-64-alternate, but not able to install software RAID-0 at the last active partition on both HDDs. Tried many types: real boot partition, etc. All my Linux op sys boot successfully from the extended partitions on both drives, but without RAID of any kind. Theory - yes. But has anyone really succeeded with 12.04 software RAID-0?

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• Cant find one particular wireless network. Worked before, but sudenly stopt working.

  - by Haakon

  My first question here. My problem is: I cant find my wireless network at home. Situation: It worked fine 7 days ago. It works with a cable(wierd). I find the network on my ipad/phone. I can connect to wireless hotspot network form my phone and wireless at my university, and it works fine. I can connect to the network in windows What I have tried: Tried this Strange network issue; works on windows, but not on ubuntu, works on campus wireless, but not at home (removing resolve.conf). Hardware and software: I have a Broadcom card Use dual boot ubuntu 12.04 - windows 7 Things I did to make wireless work: blacklist brcmsmac blacklist bcma blacklist b43 blacklist ssb Can anyone help me? I'm about to kill myself(not literary)!! I'm not that good in linux so go gentle on me:)

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• Cloud Migration Lifecycle

  - by llaszews

  The first step in migrating to the cloud is the set up phase. This phase includes: 1. Plan Cloud Setup - Create a project plan. 2. Set up infrastructure - The IaaS and PaaS environments need to be installed and configured. This includes databases, network, hardware, disk and application servers. 3. Set up shared components - Are applications, database objects or other components going to be made accessible in the cloud ? These shared components need to be configured and made accessible. 4. Set up self-service portal - Customer self service provisioning, management and monitoring.

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• Erratic typing in Ubuntu 13.04

  - by spencerrecneps

  I recently upgraded to 13.04 and have noticed that my keyboard randomly drops keystrokes. Furthermore, it will occasionally cause the last pressed key to "stick", leaving me with "typng that looks lik thisssssssssssssssssssssss". I do not believe that this is a hardware problem, as the keyboard worked just fine under 12.10 a few days ago. In addition, there are no Universal Settings turned on that would be causing this problem. I came across this unanswered Ask Ubuntu post that seems to identify part of my problem: Missing keystrokes in ubuntu 13.04 I was able to work around the repeated keystrokes problem by turning off the "key presses repeat when key is held down" option under the keyboard settings, but this is not an acceptable solution in the long term. Any thoughts?

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• Mit Oracle Datenbanken in die Pole-Position!

  - by Alliances & Channels Redaktion

  Stellen Sie sich vor, Sie haben die Wahl zwischen einem hübschen, aber uralten Kleinwagen und einem stylischen Tourenwagen auf technischem Höchststand. Beide haben etwas für sich, keine Frage, doch auf der Rennstrecke, wo es allein um Performance geht, ist Nostalgie fehl am Platz. Nicht anders ist es mit Datenbanken. Wer also Wert auf Leistung, Sicherheit und die optimale Ausnutzung von Hardware und IT-Ressourcen legt, sollte sich für ein Database-Tuning entscheiden. Die wesentlichen Vorteile der Oracle Datenbanken bringt dieses Video kurz und knackig auf den Punkt – und ist damit auch bestens zum Einsatz bei Kunden geeignet. Oracle Database Tuning from Worm Marketing Consulting GmbH on Vimeo.

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• Mit Oracle Datenbanken in die Pole-Position!

  - by Alliances & Channels Redaktion

  Stellen Sie sich vor, Sie haben die Wahl zwischen einem hübschen, aber uralten Kleinwagen und einem stylischen Tourenwagen auf technischem Höchststand. Beide haben etwas für sich, keine Frage, doch auf der Rennstrecke, wo es allein um Performance geht, ist Nostalgie fehl am Platz. Nicht anders ist es mit Datenbanken. Wer also Wert auf Leistung, Sicherheit und die optimale Ausnutzung von Hardware und IT-Ressourcen legt, sollte sich für ein Database-Tuning entscheiden. Die wesentlichen Vorteile der Oracle Datenbanken bringt dieses Video kurz und knackig auf den Punkt – und ist damit auch bestens zum Einsatz bei Kunden geeignet. Oracle Database Tuning from Worm Marketing Consulting GmbH on Vimeo.

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• Which Linux OS should I use?

  - by dylan0005

  I have use Ubuntu 10.04 & 12.04 but my problem is disk space, I just have 4GB of HDD! awesome considering all hardware that exists nowadays! Notebook Asus eeePC 900 with 2Gb of ram, intel inside CPU. So, which is the best OS should I use? I need one that have no problems with compatibily also that's not be so old. I've tried some of lightly versions like Puppy, slax, LPS us army OS, Precise.... BUT I don't like any of them. What do you think about Debian or Linux Mint?

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• dpkg --set-selections from 11.10 on 12.04LTS

  - by Vixxo

  I have to move a server to a different DC in a different country. The server is currently running 11.10, but the new fresh installed OS will be 12.04. The hardware of both is completely different. In order to install the same packages that the server currently uses, I am thinking of exporting all packages to a list and then run this list on the new machine. I will after that proceed with transferring the configuration files for the LAMP stack. My question is if this will work, or if there will be a problem because of the differences in the versions of the OS? What is the correct way to do it? PS. I have no access to KVM to reload the OS as an image, so this would not be an option.

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• See you at European SharePoint Conference, Barcelona, May 5-8, 2014

  - by Sahil Malik

  SharePoint, WCF and Azure Trainings: more information I’ll be at the European SharePoint Conference, in Barcelona, May 5th – 8th, 2014. They just released their full conference program. I have the following sessions planned, Monday, the 5th of May Full day workshop: SharePoint 2013 App Development (see the full outline here) Thursday the 8th of May, 10:15 AM Optimizing SQL Server for speedy SharePoint If you're a SQL Server DBA or a SharePoint admin, attend this session and WOW your bosses when you return. SharePoint is slow! Really? Okay, it is a common complaint I hear. But did you know, a few tweaks here and there, and with the very same hardware you can get many 100 times better performance. And many of these you can do on a running production environment. Read full article ....

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• Upgrade to Ubuntu 13.10 disabled track pad, brightness, sound on Lenovo Z570

  - by Vizir

  I just upgraded to Ubuntu 13.10 using Ubuntu's software update. It seemed to go all right, however after the system restarted and booted up Ubuntu 13.10, it began experiencing several problems. Some of them were due to expected conflicts with the updated OS, however right now I cannot figure out why certain hardware functions are now "broken" and how to fix them. As far as I can tell, these are the sound (permanently muted), mic (picks up no sound), brightness (set at maximum brightness regardless of using keyboard shortcuts or moving the screen brightness slider) and trackpad (mouse does not move, however plugged-in USB mouse does) This sounds to me like a driver issue, however I cannot figure out how to re-enable my drivers, re-install them, or whatever I have to do here. This did not happen durring my upgrades from 12.04 to 12.10, or 12.10 to 13.04, so I'm at a total loss as to why this happened this time around. My computer is a Lenovo Z570, dual-booting Ubuntu and Windows 7 from GRUB 2. Windows is working fine as far as I can tell.

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• Oracle fait progresser ses bénéfices de 40 % en un an et continue d'accroître ses marges

  Oracle fait progresser ses bénéfices de 40 % en un an Et continue d'accroître ses marges Oracle communique peu. Mais quand Oracle le fait, c'est pour dire qu'il se porte bien. Larry Ellison, son PDG créateur, vient en effet d'annoncer les résultats financiers trimestriels de sa société. Le chiffre d'affaires (CA) d'Oracle a progressé de 13 % par rapport au même trimestre 2010 à 10,8 milliards de dollars. Et son bénéfice net a bondi de plus de 35 % à 3,2 milliards. Autrement dit, Oracle vend plus et avec des marges de plus en plus importantes. Dans le détail, seule la branche Hardware (serveurs) est à la peine avec un recul du CA (- 6%). M...

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• Server 13.10 Install Hangs

  - by noloader

  I'm trying to install Server 13.10 on some old hardware for testing (HP/Compaq dc5850, with Athlon X2 2.3 GHz dual core, 4GB RAM). The third screen is "Select Language" and the machine appears to hang. Ath e selection screen, the keyboard and mouse does not work. I integrity checked the CD and it checked out OK. I also performed a second ISO download and it cross checked with my initial download: $ md5 Desktop/ubuntu-13.10-server-amd64.iso Downloads/ubuntu-13.10-server-amd64.iso MD5 (Desktop/ubuntu-13.10-server-amd64.iso) = 4d1a8b720cdd14b76ed9410c63a00d0e MD5 (Downloads/ubuntu-13.10-server-amd64.iso) = 4d1a8b720cdd14b76ed9410c63a00d0e I was able to install Server 12.04 on the same machine. The problem with 12.04 is the OpenStack packages are too old, and I wanted to try something with fresher packages. My problem appears similar to I cannot install Ubuntu Server 12.10. The Installer hangs at the language selection, but my ISOs appear to be good and the disc appears to be good. Any ideas?

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• No internet - please help?

  - by All

  I just got Ubuntu and I am really really really a linux novice. I can't get the wireless to work? I played around with it until I saw it says "wireless firmware missing" - Hardware address 00:14:A5:6A:17:C2. On my laptop there is a button that looks like a little antenae that means the wireless is on. The funny thing is that this button does not seem to do anything right now - the light is not lit up and does not light up. Any thoughts you have on getting this going are appreciated!

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• Lesetipp: Der TDAzlan Exadata Value Guide

  - by Alliances & Channels Redaktion

  Fast 20 Jahre sind Oracle und TDAzlan schon erfolgreiche Partner. Als VAD unterstützt TDAzlan Oracle Partner bei deren Business, zum Beispiel durch Sales- und Marketing-Support, Webcasts, Zertifizierungstrainings oder Enablement Workshops bis hin zur Spezialisierung. Jetzt wurde der Exadata Value Guide von Azlan für Partner und Kunden aktualisiert auf aktuelle 12c und X4 Technologien. Die Broschüre bündelt Fakten und Tipps rund um die Themen Exadata und Engineered Systems. Sie schlüsselt technische Details zu Oracle Software- und Hardware-Komponenten auf und bietet Verkaufsargumente sowie hilfreiche Erläuterungen zum Salesprozess. Außerdem wird das Oracle Authorized Solution Center (OASC) von TDAzlan in München vorgestellt. Dort haben Partner die Möglichkeit, Oracle Gesamtlösungen zu testen und Ihren Kunden zu präsentieren. Den Exadata Value Guide können sie auch auf der Oracle Informations-Webseite von TDAzlan herunterladen.

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• Lesetipp: Der TDAzlan Exadata Value Guide

  - by Alliances & Channels Redaktion

  Fast 20 Jahre sind Oracle und TDAzlan schon erfolgreiche Partner. Als VAD unterstützt TDAzlan Oracle Partner bei deren Business, zum Beispiel durch Sales- und Marketing-Support, Webcasts, Zertifizierungstrainings oder Enablement Workshops bis hin zur Spezialisierung. Jetzt wurde der Exadata Value Guide von Azlan für Partner und Kunden aktualisiert auf aktuelle 12c und X4 Technologien. Die Broschüre bündelt Fakten und Tipps rund um die Themen Exadata und Engineered Systems. Sie schlüsselt technische Details zu Oracle Software- und Hardware-Komponenten auf und bietet Verkaufsargumente sowie hilfreiche Erläuterungen zum Salesprozess. Außerdem wird das Oracle Authorized Solution Center (OASC) von TDAzlan in München vorgestellt. Dort haben Partner die Möglichkeit, Oracle Gesamtlösungen zu testen und Ihren Kunden zu präsentieren. Den Exadata Value Guide können sie auch auf der Oracle Informations-Webseite von TDAzlan herunterladen.

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• Ubuntu 12.04 fails to find Intel HD Graphics 3000

  - by user69785

  On my Windows 7 installation an Intel HD Graphics 3000 card/driver shows. However in Ubuntu 12.04, System ? Administration ? Hardware Drivers shows no proprietary drivers available for the system. I have tried running the following: sudo apt-get install mesa-utils Which results in the graphics driver incorrectly identifying itself as Sandy Bridge Mobile. Running the following results in no change sudo add-apt-repository ppa:xorg-edgers/ppa sudo apt-get update && sudo apt-get upgrade sudo reboot Does anybody have any information on this behavior?

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• Acer AO722 flickering screen

  - by user1131702

  The screen on my Acer Aspire One netbook (AO722) flickers for a few minutes when Ubuntu awakens the screen after a period of inactivity. I am pretty sure this is not a hardware issue, as I never see this problem in Windows and both of my Acer netbooks exhibit the same problem. I see the flickering in all recent versions of Ubuntu -- 11.10, 11.04, and 10.10. Surprisingly I haven't been able to find a lot of information about this problem online. I believe the video card in this netbook is Radeon 6290 paired with AMD C-60. I am using the default open source video driver. Would appreciate any tips on how to get rid of the flicker. Thanks!

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• How do I debug a cluster running Microsoft server 2003?

  - by alcor

  I'm sole developer of a complex critical software system, written in Visual C++ 2005. It's deployed on a classical Microsoft cluster scenario (active/passive), that has Windows Server 2003 R2. If a server A goes down, the other one (B) starts and take the ownership of its duties. You have to know that: Both servers have the same Microsoft patches/fixes, same hardware, same everything. Both servers use the same memory storage (a RAID-6 through fiber channel). This software has a main module that launches the peripheral modules. if a peripheral module crashes, the main module restarts it. When I switch the application in one of the two servers (let's say the B server) two of the peripheral modules of the main applications just started to crash apparently without reason about 2 seconds after the start of the peripheral module. What could I do to analyze/inspect/resolve this weird situation?

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