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  • Why does Facebook convert PHP code to C++?

    - by user72245
    I read that Facebook started out in PHP, and then to gain speed, they now compile PHP as C++ code. If that's the case why don't they: Just program in c++? Surely there must be SOME errors/bugs when hitting a magic compiler button that ports PHP to c++ code , right? If this impressive converter works so nicely, why stick to PHP at all? Why not use something like Ruby or Python? Note -- I picked these two at random, but mostly because nearly everyone says coding in those languages is a "joy". So why not develop in a super great language and then hit the magic c++ compile button?

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  • Is the Lenovo Ideapad Z570 fully compatible with 12.04?

    - by umpirsky
    I'm looking for some notebook that will run on Ubuntu perfectly. I like LENOVO IdeaPad Z570, but I'm not sure how it will perform on Ubuntu. I heard people are complaining about wireless problems. Here is full configuraion: Processor Intel Core i5 2430M 2.4GHz - 3.0GHz Chipset Intel HM65 Express Memory 4GB DDR3 1333MHz Graphics NVIDIA GeForce GT 520M 1GB HDD 750GB SATA II Wireless 802.11b/g/n, Bluetooth 2.1 Network adapter Ethernet LAN 10/100Mbps Ports VGA, HDMI, 3x USB 2.0, eSATA Does anyone have experience with this model? Any problems noted? I heard there is a test suite, how can I install it? Maybe I can boot live CD and try it myself before buying it. But, unfortunately, sometimes something works on live CD, but not when you install it. I guess critical components here are graphics and wireless. Any feedback would be appreciated.

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  • Wake-on-lan under Ubuntu 12.04

    - by iUngi
    I would like to setup the wake-on-lan, the two PCs are connected through a switch. Here is the configuration of the eth0, in the BIOS I couldn't find any information regarding the wake-on-lan. Supported ports: [ TP MII ] Supported link modes: 10baseT/Half 10baseT/Full 100baseT/Half 100baseT/Full 1000baseT/Half 1000baseT/Full Supported pause frame use: No Supports auto-negotiation: Yes Advertised link modes: 10baseT/Half 10baseT/Full 100baseT/Half 100baseT/Full 1000baseT/Half 1000baseT/Full Advertised pause frame use: Symmetric Receive-only Advertised auto-negotiation: Yes Link partner advertised link modes: 10baseT/Half 10baseT/Full 100baseT/Half 100baseT/Full 1000baseT/Full Link partner advertised pause frame use: Symmetric Link partner advertised auto-negotiation: Yes Speed: 1000Mb/s Duplex: Full Port: MII PHYAD: 0 Transceiver: internal Auto-negotiation: on Supports Wake-on: pumbg Wake-on: g Current message level: 0x00000033 (51) drv probe ifdown ifup Link detected: yes After I shut down the PC, I used different tools to send out the magic package, but nothing happens. Any suggestion?

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  • How to get Rosegarden to work with timidity?

    - by molybtek
    I'm having problems getting Rosegarden to play midi using Timidity on Ubuntu 11.10 amd64. I've tried mapping the MIDI playback device to one of the Timidity port that was automatically created on start up and that failed. I've also tried manually starting timidity using the -iA option, and mapping the Rosegarden's MIDI playback device to one of the new ports, and that still failed. When I close Rosegarden, I can hear one or two notes get played. Would anyone know how I can get Rosegarden to work again. Thanks.

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  • How to set up router with DSL?

    - by NightwishFan
    I have a Verizon DSL connection. I am new to being the one who has to maintain the net. We have the Verizon modem and plugged into it is a belkin router. I did not alter the configuration on either of the devices. We get a net connection, though I have issues joining any form of online game. Some refuse to connect, others are slow. I have read that perhaps I need to use the modem in "bridge mode" to the wireless router? Would that fix my issues? Or do I just have to open ports or something similar. I really have no clue what could be the problem. Could someone advice me how to get this working with Ubuntu?

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  • Les constructeurs de tablet PC abandonnent Android au profit de Windows 7, quel OS est le plus perfo

    Les constructeurs de tablet PC abandonnent Android au profit de Windows 7, quel OS est le plus performant ? MSI (Micro-Star International), constructeur d'ordinateurs portables, se prépare à concurrence Apple. Ce gros vendeur taïwanais a en effet prévu de présenter son propre tablet PC la semaine prochaine, à l'occasion du salon Computex de Taipei. Le Slatebook, avec son écran tactile de 10 pouces, sera équipé du Wi-FI et de la 3G intégrés, et prendra en charge les ports USB et HDMI. Originellement prévu pour être basé sur Google, l'appareil tournera finalement sous Windows 7. C'est la seconde fois en peu de temps qu'un projet initialement amorcé avec des technologies de Google est abandonné au profit...

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  • After deploying services I get incorrect public adress

    - by user84471
    I deployed wordpress and when I type juju status I recievie this: public-adress: node-001185e6777fe When I found what is IP adress of this computer I tried type in webbrowser but I get 502 bad gateway. After juju status: hsf@ubuntu:~$ juju status 2012-10-05 11:26:49,385 INFO Connecting to environment... Enter passphrase for key '/home/hsf/.ssh/id_rsa': 2012-10-05 11:26:51,905 INFO Connected to environment. machines: 0: agent-state: running dns-name: node-00127968a7be.local instance-id: /MAAS/api/1.0/nodes/node-ab7c5eb6-0e08-11e2-bb37-001185e67955/ instance-state: unknown 1: agent-state: running dns-name: node-001185e677fe instance-id: /MAAS/api/1.0/nodes/node-82beae92-0e09-11e2-a134-001185e67955/ instance-state: unknown 2: agent-state: running dns-name: node-001185e6772b.local instance-id: /MAAS/api/1.0/nodes/node-5c21dc18-0e0a-11e2-a134-001185e67955/ instance-state: unknown services: wordpress: charm: cs:precise/wordpress-9 exposed: true relations: loadbalancer: - wordpress units: wordpress/2: agent-state: started machine: 1 open-ports: [] public-address: node-001185e677fe.localdomain 2012-10-05 11:26:52,459 INFO 'status' command finished successfully hsf@ubuntu:~$

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  • Well supported Hardware Raid Controller

    - by ftiaronsem
    I am currently planning to buy a hardware-raid controller. This became necessary since I am running Linux and Windows in parallel and now need the redundancy for both OS (Im am going to use RAID1 / Mirroring). Therefore I am searching for a hardware raid controller which is well supported by linux / ubuntu (reporting smart values, stats for the harddrives, etc...). This controller should have four sata ports and if possible it should fit in a PCIE-1x Slot. I would greatly appreciate, if you could suggest some devices. Thanks in advance

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  • USB (wireless) keyboard not recognised during install

    - by Jon C
    I'm just trying my first trip into the world of Ubuntu. Trying to install from CD on to a virgin machine, I get the initial language prompt, select 'English', I get the Ubuntu install options, select 'Install Ubuntu Server'. I'm then presented with a further 'Language for installation' screen. At this point my keyboard stops working...! Some specifics: I'm using a Logitech wireless USB keyboard - it works fine on another machine; Machine is a ProLiant Micorserver N54L (No PS/2 ports); BIOS USB support is set to Legacy. Any ideas...? Thanks, Jonathan

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  • How to handle "porting" software that's still in development

    - by BAM
    My company is building an iOS version of an Android app that our client is developing (but has not yet released). We have access to the latest builds and source, however since the software is frequently re-structured and refactored, we're doing a lot of unnecessary re-work. In addition, the due date on the contract will likely be passed before the client's application is even ready for release. In other words, we're supposed to build the iOS version before the original Android version is even complete. Luckily the client tossed out the original deadline, but now we may have to renegotiate pricing... never a fun situation. Are we handling this incorrectly? How are "ports" (especially between mobile platforms) normally done? Is there a correct way to pipeline development for multiple platforms without so much re-work? Thanks in advance! :)

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  • using curl command to download file in parts from different interfaces and to run the commands simultaneously from a script

    - by jsjain007
    i wanted to download a file using curl command simultaneously in different parts using ip aliasing(virtual Ethernet ports) so what i did was pasted the commands in a text file and run but the problem as obvious since it is in a file the commands will be executed one by one so is there a way to run all those commands simultaneously. here is the command curl --interface eth0:0 --range 0,38010880 http://wdl.cache.ijinshan.com/wps/download/Linux/unstable/kingsoft-office_9.1.0.4244~a12p3_i386.deb -o kinsoft-office.part1 curl --interface eth0:1 --range 38010880 ,- http://wdl.cache.ijinshan.com/wps/download/Linux/unstable/kingsoft-office_9.1.0.4244~a12p3_i386.deb -o kinsoft-office.part2 cat kinsoft-office.part*>kinsoft-office can anyone help me to run these above 2 commands simultaneously from the script so as to increase download speed

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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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  • Can I rightfully claim this as my own project if I recieved help online?

    - by Brad Guy
    Basically I'm new to network programming in Python, so I went on a tutorial online to find out about it. Using what was taught in the tutorial (creating a socket, connecting to ports, etc), I modified the code so that I made a program where two computers can send messages to one another. If I were to apply for a job and show this to my interviewers, would the code for it technically be mine? It is fair to say that I didn't modify the code by that much; However, what if for example I modified it into something like a tic-tac-toe game, where two users play each other from different PCs, would the code then be mine? I just don't want to look like a plagiarizer hence why I ask.

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  • Ubuntu Surround Sound Help?

    - by Adam
    I am running Ubuntu 12.10 on a Sony Vaio VGC-RB34G ( http://reviews.cnet.com/desktops/sony-vaio-vgc-rb34g/4505-3118_7-31289053.html ) with an integrated Realtek High Definition Audio sound card. On Windows, I can set up the sound card to provide sound to my surround sound system from the Line Out, Line In, and Mic ports, as in all of these are producing audio. I have tried to use alsa to achieve this result with no luck. Is there any possible way to do this on Ubuntu? Thanks! Here is a Picture of the manager I have on Windows and the result I want to achieve https://picasaweb.google.com/106733704390489891165/November102012#5809378929755566722

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  • Make public webcam. Which protocol, which codec. (Using VLC)

    - by gsedej
    Hi! I want to use my old (1GHz) PC as webcam video stream server (like you can see those road cameras). I thought of using VLC and already tried using http output but it was not really good. Too cpu hungry, too big stream (kBps), not stable... I been reading VLC how-to's but thre is still a question. Which output should I use? Http, RTSP, UDP? I want to make for more than one computer at the same time (multicast). Which codec should be good? PC is not so fast so it shouldn't be too cpu hungry codec. Mpeg2, mpeg4, xvid? how much video buffer should I use (vb=?)? What about setting IP and ports? So I need some help with ideas, but if someone can make a VLC command line it's even better :) Oh, computer has direct internet connection and own IP.

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  • Is executing SQL through a WebService a really bad idea?

    - by Kyle
    Typically when creating a simple tool or something that has to use a database, I go through the fairly long process of first creating a webservice that connects to a database then creating methods on this webservice that do all the type of queries I need.. methods like List<Users> GetUsers() { ... } User GetUserByID(int id) { ... } //More Get/Update/Add/Delete methods Is it terrible design to simply make the webservice as secure as I can (not quite sure the way to do something like this yet) and just make a couple methods like this SqlDataReader RunQuery(string sql) { ... } void RunNonQuery(string sql) { ... } I would sorta be like exposing my database to the internet I suppose, which sounds bad but I'm not sure. I just feel like I waste so much time running everything through this webservice, there has to be a quicker yet safe way that doesn't involve my application connecting directly to the database (the application can't connect directly to database because the database isn't open to any connections but localhost, and where the appliction resides the standard sql ports are blocked anyway) Especially when I just need to run a few simple queries

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  • USB Mouse stutters periodically

    - by greggory.hz
    I'm using an HP dv6000 (not sure of exact model) with a pretty basic Logitech wireless laptop mouse. From time to time, the USB mouse will be very stuttery and less responsive. Not all clicks register and the motion is not smooth. It seems like it's related to the notify-osd coming up when I get an IM or Email or whatever else, but it happens other times as well. It's not the whole computer becoming less responsive, because if I use the touch pad during one of these fits, it works perfectly smooth. I've replaced the batteries in the mouse and have tried different USB ports with better line of sight, etc. I can't figure out what's going on. Any thoughts?

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  • ASUS Xonar DG not working Ubuntu

    - by thephpdev
    I've checked the "Questions that may already have your answer" to no avail. Basically, there is no sound at all, the snd_oxygen drivers are all being loaded. I can see the sound card and all of it's separate ports in Settings-Sound-Output, but nothing is coming out. I tried adjusting the volume in alsamixer, but for some reason the volume won't change (all that is there are some options [Speakers, Headphones, FP Headphones] and they change when I press the up/down arrow keys) at all. I have also tried many other terminal commands, such as reloading alsa and checking if the sound card is even being detected, which it is. I'm left clueless. It says on a bug report that this has been unassigned for over a year. Surely that's not right. Thanks in advance, Caelan.

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  • Dual Screens not working nVidia

    - by user91396
    So I'm very much an Ubuntu noob, in fact I just install Ubuntu to my P.C. and I started it up with both my screens plugged into my nVidia's dvi and vga ports and logged in, change the skin to classic gnome, because that's how it was when I last used Ubuntu (8.1), and both screens were working separately. The trouble is that I got a notification saying there was nVidia drivers to be installed, so I install them and restart my P.C., as it told me to, and when I get back on only one of my screens is working and when I go into Displays (All Settings, Displays) it doesn't register my other screen at all, and it calls my working screen "Laptop". I've tried looking through several pages of Google but I see no answer. I did try to find the nvidia-settings to see if that had the answers but sadly I couldn't locate it. Thanks in advance for any help, but please remember, I am very new to Ubuntu.

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  • Installed Ubuntu using WUBI due to lack of CD Drive

    - by Chantelle
    I have installed 12.04 via WUBI because my computer does not have a CD Drive. Is there any way that I can delete Windows 7 from my computer and use the whole HD for Ubuntu? I ask this question because for one reason or another I cannot boot from a boot-able USB stick (either in Windows or Ubuntu, however the USB port works because I am able to use my cell phone's tethering plan using all the USB ports to connect to the Internet). Edit: Just found out the problem. Eee PC Model 1018p's do not boot from any format other than FAT and FAT16 and not FAT32.

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  • Illuminated USB keyboard flickers

    - by Axj Member
    Does anyone know where I can download a driver for the VAKOSS TK-487-UK illuminated keyboard to run on Ubuntu? Or at least how to control the USB port so that it stops flickering on and off. The USB port works fine but the Keyboard is not recognized by Ubuntu... Already read the post on youtube and script but did not work either...tried changing USB ports, rebooting, etc. This has been going on for a week. The keyboard gets its power from the USB port. http://answers.yahoo.com/question/index?qid=20120128105854AAjgmgn

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  • enable iptables firewall on linux

    - by user13278061
     Here is a very basic set of instruction to setup a simple iptables firewall configuration on linux (redhat) Enable firewall log as root thenenter the following command, it launch a text gui #> setup first screen: Choose firewall configuration second screen: choose "Enabled" then "Customize" third screen: select you interface in "Trusted Devices", select "Allow Incoming" for "SSH" "Telnet" "FTP" (add eventually other ports, then press "OK" (2 times, then "Quit") At that point the firewall is enabled. You can start/stop/monitor using service iptables start/stop/status Change timeout to changed the tcp established connection timeout #> echo 120 >    /proc/sys/net/ipv4/netfilter/ip_conntrack_tcp_timeout_established Monitor connection in iptables tables for example if you want to track a connection establish from a host  152.68.65.207 #> cat /proc/net/ip_conntrack |grep 152.68.65.207

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  • Need suggestions on what you regard as &ldquo;security&rdquo;

    - by John Breakwell
    I’m currently writing a large piece on MSMQ security and wanted to check I was covering the right areas. I have some doubts as I’ve seen the occasional MSMQ forum question where a poster has used the word “security” in different contexts to what I was expecting. So here are the areas I plan to cover: Message security encryption on the wire (SSL and IPSEC) encryption of the message (MSMQ encryption) encryption of the payload (data encryption) signing and authentication Queue security SIDs and ACLs Discoverability Cross-forest issues Storage security NTFS permissions unencrypted data Service security Ports and Firewalls DOS attacks Hardened mode (HTTP only) RPC secure channel requirement authenticated RPC requirement Active Directory object permissions Setup Administrator requirements What else would you want to see?

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  • ubuntu 14.04 slow

    - by TURN A
    so i upgraded to ubuntu 14.04 from 12.04 with a usb but i have internet ,my computer is really slow at 1024x768 definition ,everything works super slow ,windows closing and opening and streaming videos ,everything ive used so far.but it works fine at 800x600 definition ,i want it to be fine at the higher definition ,how do i make it run well at 1024x768 ? in additional drivers nothing shows ,and my computer mirrors by default for some reason ,i tried stopping it from mirroring but most buttons dont want to work and weird glitches happen ,the system doesnt work well when not mirroring , i dont care if it mirrors or not i just want good performance .thank you in advance for any answers !! here are the computer specs Processor 1.8 GHz 8032 RAM 2 GB DDR3 Memory Speed 1066 MHz Hard Drive 32 GB Graphics Coprocessor Graphics Media Accelerator HD Wireless Type 802.11B, 802.11G, 802.11n Number of USB 2.0 Ports 4 Expand Other Technical Details Brand Name Asus Item model number EB1030-B003L Hardware Platform Linux Operating System Ubuntu Item Weight 1.5 pounds Item Dimensions L x W x H 1.14 x 6.70 x 8.60 inches Color Black Processor Brand Intel Processor Count 1 Computer Memory Type DDR3 SDRAM Flash Memory Size 32 Hard Drive Interface Solid State Optical Drive Type No

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  • At what point asynchronous reading of disk I/O is more efficient than synchronous?

    - by blesh
    Assuming there is some bit of code that reads files for multiple consumers, and the files are of any arbitrary size: At what size does it become more efficient to read the file asynchronously? Or to put it another way, how small must a file be for it to be faster just to read it synchronously? I've noticed (and perhaps I'm incorrect) that when reading very small files, it takes longer to read them asynchronously than synchronously (in particular with .NET). I'm assuming this has to do with set up time for things like I/O Completion Ports, threads, etc. Is there any rule of thumb to help out here? Or is it dependent on the system and the environment?

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