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  • Node.js Build failed: -> task failed (error#2)?

    - by Richard Hedges
    I'm trying to install Node.js on my CentOS server. I run ./configure and it runs perfectly fine. I then run the 'make' command and it produces the following: [5/38] libv8.a: deps/v8/SConstruct - out/Release/libv8.a /usr/local/bin/python "/root/node/tools/scons/scons.py" -j 1 -C "/root/node/out/Release/" -Y "/root/node/deps/v8" visibility=default mode=release arch=ia32 toolchain=gcc library=static snapshot=on scons: Reading SConscript files ... ImportError: No module named bz2: File "/root/node/deps/v8/SConstruct", line 37: import js2c, utils File "/root/node/deps/v8/tools/js2c.py", line 36: import bz2 Waf: Leaving directory `/root/node/out' Build failed: - task failed (err #2): {task: libv8.a SConstruct - libv8.a} make: * [program] Error 1 I've done some searching on Google but I can't seem to find anything to help. Most of what I've found is for Cygwin anyway, and I'm on CentOS 4.9. Like I said, the ./configure went through perfectly fine with no errors, so there's nothing there that I can see. EDIT I've got a little further. Now I just need to upgrade G++ to version 4 (or higher). I tried yum update gcc but no luck, so I tried yum install gcc44, which resulted in no luck either. Has anyone got any ideas as to how I can update G++?

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  • Would like to change audio codec, but keep video settings with ffmpeg

    - by Craig Tataryn
    I have a video for which I'd like to convert the audio codec to AAC 320 kbps / 44.100 kHz. What would I use for ffmpeg switches such that all the video settings and codec remain the same, but only the audio codec and settings change? Here's my video: $ ffmpeg -i Winnipeg.rb\ Scala-Talk.mov FFmpeg version SVN-r25375, Copyright (c) 2000-2010 the FFmpeg developers built on Oct 6 2010 13:02:41 with gcc 4.2.1 (Apple Inc. build 5664) configuration: --enable-libmp3lame --enable-shared --disable-mmx --arch=x86_64 libavutil 50.32. 2 / 50.32. 2 libavcore 0. 9. 1 / 0. 9. 1 libavcodec 52.92. 0 / 52.92. 0 libavformat 52.80. 0 / 52.80. 0 libavdevice 52. 2. 2 / 52. 2. 2 libavfilter 1.48. 0 / 1.48. 0 libswscale 0.12. 0 / 0.12. 0 Seems stream 0 codec frame rate differs from container frame rate: 2000.00 (2000/1) -> 10.00 (10/1) Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'Winnipeg.rb Scala-Talk.mov': Metadata: major_brand : qt minor_version : 537199360 compatible_brands: qt Duration: 01:10:53.00, start: 0.000000, bitrate: 283 kb/s Stream #0.0(eng): Video: h264, yuv420p, 800x598, 94 kb/s, 10 fps, 10 tbr, 1k tbn, 2k tbc Stream #0.1(eng): Audio: adpcm_ima_qt, 22050 Hz, 1 channels, s16 Stream #0.2(eng): Audio: adpcm_ima_qt, 22050 Hz, 1 channels, s16 At least one output file must be specified Many thanks in advance! One with with ffmpeg I've never been able to grok is how to just "tweak" files without having to regurgitate every little setting for things you don't want changes.

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  • Best bang for buck, pivotable, non-TN, >= 1920*1200, LCD screen ? [closed]

    - by julien
    I was almost set on getting a Samsung - SyncMaster 2343BW PIVOT, due to the high resolution, pivot and uber-cheapness. But after reading the comment on this SU question, I was bummed to realize it's a TN screen, which apparently would be a pain for my inteded use ; i.e. portrait mode for reading/coding. Do you know of a comparable model that is "IPS or PVA/MVA", but won't break the bank ? cheers

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  • Weird graphics behaviour while playing games

    - by Ayush Khemka
    When I play any high-end game like NFS Most Wanted or FIFA 12, I get these weird things on my graphics. While playing NFS, my car has various transparent diamonds all over its body, and while playing FIFA I get these weird black lines all over the field. My PC specs are :- AMD Athlon II X2 ASUS M4A785D-M PRO 500GB Seagate HDD 2GB DDR2 Transcend RAM 1033Mhz ATI Radeon HD4350 512MB graphics card Tell me if I need to provide anything else. Please help me. Thanks.

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  • Mount an VHD on Mac OS X

    - by janm
    Is it possible (how) to mount an VHD file created by Windows 7 in OS X? I found some information about how to do this on linux. There is a fuse fs "vdfuse" which uses virtualbox libs to mount filesystems supported by virtualbox. However I was unable to compile the package on osx because nearly all headers are missing and I doubt that it would work anyway... EDIT #2: Okay I got my hands dirty and finally compiled vdfuse (http://forums.virtualbox.org/viewtopic.php?f=26&t=33355&start=0) on osx. As a starting point I used macfuse (http://code.google.com/p/macfuse/) and looked at the example file systems. This led me to the following build script infile=vdfuse.c outfile=vdfuse incdir="your/path/to/vbox/headers" INSTALL_DIR="/Applications/VirtualBox.app/Contents/MacOS" CFLAGS="-pipe" gcc -arch i386 "${infile}" \ "${INSTALL_DIR}"/VBoxDD.dylib \ "${INSTALL_DIR}"/VBoxDDU.dylib \ "${INSTALL_DIR}"/VBoxVMM.dylib \ "${INSTALL_DIR}"/VBoxRT.dylib \ "${INSTALL_DIR}"/VBoxDD2.dylib \ "${INSTALL_DIR}"/VBoxREM.dylib \ -o "${outfile}" \ -I"${incdir}" -I"/usr/local/include/fuse" \ -Wl,-rpath,"${INSTALL_DIR}" \ -lfuse_ino64 \ -Wall ${CFLAGS} You actually don't need to compile VirtualBox on your machine, just install a recent version of VirtualBox. So now I can partially mount vhds. The separate partitions appear as block files Partition1, Partition2, ... on my mount point. However Mac OS X does not include a loopback file system and macfuse's loopback fs does not work with block files, so we need a loopback fs to mount the blockfiles as actual partitions.

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  • Convert PowerPoint to Flash or Silverlight?

    - by Michael Stum
    I have a simple PowerPoint presentation and I would like to convert it to Flash or Silverlight. The presentation is a simple "Slide after Slide after Slide" and my first guess was to use OpenOffice Impress. Sadly, the picture quality is awful. I would need the presentation to be in a specific format (900 Pixels wide and as high as it needs to be, usually 675 pixels) Can you recommend any good, simple PowerPoint = Flash or Silverlight converter that does that?

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  • How to find an alternative proxy server

    - by Stan
    It appears the default ISP proxy has some problem and got high latency. How to find a good alternative proxy at my location? Say google's proxy? I tried to search online (keyword: proxy mylocation), but couldn't tell which is trustworthy. Thanks.

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  • How to find an alternative proxy server

    - by Stan
    It appears the default ISP proxy has some problem and got high latency. How to find a good alternative proxy at my location? Say google's proxy? I tried to search online (keyword: proxy mylocation), but couldn't tell which is trustworthy. Thanks.

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  • Graphics card artifacting

    - by White Phoenix
    This is my current build: EVGA X58 (first generation) motherboard Intel i7 965 @ stock clocks 3x 2GB DDR3-1600 Corsair RAM at stock timings and voltages Corsair AX750 80 Plus Gold PSU 1 Optical Drive 1 Seagate 7200.10 500 GB drive 2x Western Digital Caviar Black 1 TB drives OCZ Vertex 1 60 GB EVGA GTX 460 Antec 1200 case HT-Omega Striker 7.1 Sound Card Windows 7 32-bit Professional (PAE Enabled) My graphics card started artifacting while I was playing a game. It artifacted, the display blinked, then I got an NVIDIA driver has crashed and recovered message. Kept going, more artifacts, another crash, but this time my display blanked out and I couldn't do anything. Restarted my computer - artifacting is in the BIOS - got to Windows 7 but it BSOD'd before I could even log in. I restarted the computer again - artifacts cleared themselves out and I managed to get to Win7, but it soon started blinking in and out and artifacting again. Checked the card temps and they're well within range. (50 idle, 70 full load) The ambient temperature here is about 80-85F with high humidity. Tried Safe Mode and it still froze up/BSOD'd. Already tried the following to fix this problem: - Reseat the graphics card and swapped in a different slot. - Removed cover on card and sprayed with compressed air to clean it out. - Swapped around memory and/or went with only using one stick at a time. - Underclocked card I called EVGA Tech Support and they said that the voltage on the 12V rail of my Corsair AX750 PSU was on the high end of the "acceptable" range (12.4V, highest within acceptable range is 12.6V - optimal is obviously 12V). They gave me an RMA number anyway, but I want to get a second opinion from you all before I send this thing off, as shipping from where I live to EVGA is kind of pricey. This PSU is only 6 months old. So that I don't have to play RMA tag, which case would be most likely? I'm strapped for cash at the moment so I want to reduce the amount of RMAs I have to do since shipping is expensive here. Is there any surefire way to test to see if it's really the graphics card or the PSU? I tried unplugging any devices that were connected to the 12V rail (except for my SSD and graphics card) as I do have 3 mechanical hard drives, but the voltage for that rail didn't drop (it remained at 12.4V). I'm fairly sure it isn't the drivers since I'm getting the artifacting at the BIOS too. Right now I'm back in Windows 7 but I don't know for how long until it messes up again. Any ideas?

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  • pull bandwidth from wireless WAN into local LAN

    - by cortical
    We have a local network (A) of about 50 computers connected via gigabit ethernet. We get a connection to the internet using two broadband connections to a backbone and distribute the bandwidth across the 50 computers using a CISCO 1811 router, but the bandwidth is not enough for everybody. There is a campus wide wireless network(B) that has very high bandwidth, is there a device or way to setup multiple individual connections to network B and supply the bandwidth to our network A?

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  • Linux tools to choose suitable Cisco ASA 5500

    - by linuxcore
    I have a linux webhosting server which affects a high DDOS. I want to use Cisco ASA 5500 Series Adaptive Security Appliances to protect the linux server from this DDOS. I know there are many factors should you know before you choose the suitable hardware firewall like the amount of this DDOS and pps ..etc Please suggest a linux tools to measure those factors and to help me collect the required informations ( pps - amount of DDOS - concurrent connections and other factors ) Regards,

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  • Why is the VGA Cable attached to new monitors

    - by ahsteele
    When opening a new monitor I am amazed that the VGA cable is always attached. Even with new high end monitors that include Display Port and DVI cables the old VGA cable is always attached while the others are just left in the box. What is the reasoning behind attaching a cable in the first place and why the VGA cable in particular?

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  • No audio device detected

    - by Paul
    My computer has no audio. It says NO AUDIO DEVICE. I already installed Realtek AC97 and Realtek High Definition Audio Driver and I also pasted stream.dll to the Windows and system32 folders and I restarted my computer but it still says NO AUDIO DEVICE. Please help me. Thanks

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  • Raspberry pi slows down my entire network

    - by gnusouth
    Whenever my Raspberry Pi is connected to the network (via ethernet) the entire network is slowed to a crawl. On my main computer, ping times for google.com go from ~10ms to ~200ms and it takes forever to load web pages. Connections are also slow on the Pi, with an apt-get update showing pathetic speeds in the order of 1KB/s. Turning off the Pi completely removes the drag from the network. I've tried static and dynamic IP addresses for the Pi, but both have the same problems. I'm currently using Raspbian (downloaded today), but also had this problem with Arch Linux. I've checked the connection's duplex with dmesg | grep -i duplex, which shows that the Pi's connection is running at 100Mbps, full-duplex, as expected. My modem/router is a Billion 7404VNPX (an Australian thing); relatively high-end, albeit a bit buggy at times (it will occassionally delete all its firewall settings). It assigns IPs in the range 192.168.1.1 to 192.168.1.20 and has 192.168.1.254 as its own IP. When I assign static IPs I tend to use the 192.168.1.200 area. Does anyone have any idea as to what could be causing this weird slowdown? Or any tests I could try? Thanks

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  • Is it possible to get a list of running processes with a Cloudwatch Alarm?

    - by jtalarico
    We have an EC2 instance (Ubuntu) that has a few java-based applications and lately we're getting hit with high CPU utilization spikes that trigger one of our Cloudwatch alarms. By the time we get into the server to look at the cpu utilization, things have calmed down. What we'd love to see in one of the alarm emails is a list of running processes and their cpu utilization(%) at the time of the alarm. Is this even possible?

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  • How to remove RAID flag on unstriped drive without losing data?

    - by Alex Folland
    I have a Gigabyte Z68X-UD4-B3 motherboard. It advertises this new thing called "XHD", which is like RAID but makes a SSD and traditional-style drive work together to enable high speed with high capacity. I don't want to use this feature, and I already have Windows 7 64 installed without using this feature. When I first installed my 2 hard drives (1 SSD and 1 traditional-style drive) in my machine and booted it up for the first time, it ran a program from the mobo that asked me if I wanted to set up XHD. Thinking it would go to some config screen, I said yes. It immediately started doing something with my drives and finished. I considered that strange, but figured it wouldn't matter when I simply install Windows onto my SSD only. I now have my BIOS and Windows running in AHCI mode with no RAID arrays and separate drives. My SSD is one of those new Corsair Force GT drives which loses power every so often, causing Windows to BSOD. I've figured everything out about this problem, including installing the latest firmware from Corsair, and the only way to fix it at this point is by installing Intel Rapid Storage Technology to control AHCI instead of Windows, since the Windows AHCI driver disables the drive's power every once in a while and can't be configured not to do so. I've tried installing Intel Rapid Storage Technology. When I reboot my machine after doing so, it BSODs just after the Windows logo. I've figured out this is because my SSD and my traditional drive are flagged as RAID, as seen in the "Intel Matrix Storage Manager" program found by switching the BIOS hard drive handling to "RAID" mode. This is due to the XHD auto-config program I mentioned earlier. Normally, the BIOS is set to AHCI, and when the drives boot in AHCI mode, they work perfectly. So, I've concluded the data is stored in AHCI mode but the drives' flags are set to RAID. I've figured out that I can accomplish my objective by using the "Intel Matrix Storage Manager" program on the mobo (with "Reset disks to non-RAID"), but doing so would cause it to completely wipe the drives I select. I want to simply toggle these flags from RAID to AHCI so Intel Rapid Storage Technology doesn't fail and cause a BSOD upon booting, but without wiping the drives.

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  • Broken pipe on nginx

    - by schneck
    Hi there, I set up php/fastcgi with nginx and now I want to upload very large files via a java-applet. After about 30 seconds, the applet reports a "Broken pipe". In the server logs, i find nothing. I changed any setting in the php.ini (max_execution_time, max_input_time, memory_limit, post_max_size) to very high values, but nothing helps. Any idea?

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  • On clients use generic driver for printer shared by CUPS

    - by Daniel
    I know this worked really easy with a recent CUPS version some years ago. Unfortunately I fail to do the following with latest CUPS nowadays. How to share a printer without using printer specific drivers on the clients with CUPS? The printer is a Samsung ML-2010. The important fact is that it needs a quite specific library for printing called splix. That is installed on the server and prints well. What makes trouble is using that printer over the network. I found out how to use Avahi under Linux to make use of DNSSD to advertise and discover printers. But as far as I understand the new CUPS offers the internal driver interface on the network. This has 2 major issues: anybody can fiddle with the driver and I don't trust any uncommon printer library to be "network secure" anyone who wants to use my printer including guests needs to install the specific drivers first I remember the old days when I could enable "Share this printer" on the CUPS server and all clients would magically detect the printer and just send their job data to the server and have it do the driver stuff. After everything a read I guess this is related to the changes Apple introduced with CUPS including dropping of the integrated network discovery protocol. If it helps: Server: Ubuntu LTS 12.04 Server with CUPS 1.5.3 Client: Arch Linux with current CUPS 1.6.1 On another box with Ubuntu the printer was setup automatically at least but the mechanism used the Splix library for that.

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  • Slash after domain in URL missing for Rails site

    - by joshee
    After redirecting users in a Rails app, for some reason the slash after the domain is missing. Generated URLs are invalid and I'm forced to manually correct them. The problem only occurs on a subdomain. On a different primary domain (same server), everything works ok. For example, after logging out, the site is directing to https://www.sub.domain.comlogin/ rather than https://www.sub.domain.com/login I suspect the issue has something to do with the vhost setup, but I'm not sure. Here are the broken and working vhosts: BROKEN SUBDOMAIN <VirtualHost *:80> ServerName www.sub.domain.com ServerAlias sub.domain.com Redirect permanent / https://www.sub.domain.com </VirtualHost> <VirtualHost *:443> ServerAdmin [email protected] ServerName www.sub.domain.com ServerAlias sub.domain.com RailsEnv production # SSL Engine Switch SSLEngine on # SSL Cipher Suite: SSLCipherSuite ALL:!ADH:!EXPORT56:RC4+RSA:+HIGH:+MEDIUM:+LOW:+SSLv2:+EXP:+eNULL # Server Certificate SSLCertificateFile /path/to/server.crt # Server Private Key SSLCertificateKeyFile /path/to/server.key # Set header to indentify https requests for Mongrel RequestHeader set X_FORWARDED_PROTO "https" BrowserMatch ".*MSIE.*" \ nokeepalive ssl-unclean-shutdown \ downgrade-1.0 force-response-1.0 DocumentRoot /home/usr/www/www.sub.domain.com/current/public/ <Directory "/home/usr/www/www.sub.domain.com/current/public"> AllowOverride all Allow from all Options -MultiViews </Directory> WORKING PRIMARY DOMAIN <VirtualHost *:80> ServerName www.diffdomain.com ServerAlias diffdomain.com Redirect permanent / https://www.diffdomain.com </VirtualHost> <VirtualHost *:443> ServerAdmin [email protected] ServerName www.diffdomain.com ServerAlias diffdomain.com ServerAlias *.diffdomain.com RailsEnv production # SSL Engine Switch SSLEngine on # SSL Cipher Suite: SSLCipherSuite ALL:!ADH:!EXPORT56:RC4+RSA:+HIGH:+MEDIUM:+LOW:+SSLv2:+EXP:+eNULL # Server Certificate SSLCertificateFile /path/to/server.crt # Server Private Key SSLCertificateKeyFile /path/to/server.key # Set header to indentify https requests for Mongrel RequestHeader set X_FORWARDED_PROTO "https" BrowserMatch ".*MSIE.*" \ nokeepalive ssl-unclean-shutdown \ downgrade-1.0 force-response-1.0 DocumentRoot /home/usr/www/www.diffdomain.com/current/public/ <Directory "/home/usr/www/www.diffdomain.com/current/public"> AllowOverride all Allow from all Options -MultiViews </Directory> </VirtualHost> Please let me know if there's anything else I could provide that would help determine what's wrong here. UPDATE tried adding a trailing slash to the redirect command, but still no luck.

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  • DVD-burner disappears when using grub

    - by drblah
    This is a rather annoying problem I have with Linux on my laptop. Whenever I install any Linux distro that relies on grub (which is about 99 % apparently) it will mess up my DVD-drive and the drive will not be recognized after booting, no matter the OS (Ubunntu, Arch, Windows Vista or 7). I know the problem has nothing to do the DVD-drive itself, because I bought a new one a few months ago. I am also sure that grub is messing the drive up, because I have tried to use LILO, which worked fine (except for horrible boot times.) This problem have persisted through about 3-4 years and it is a pretty bad show stopper whenever I want to work with Linux. I had hoped it would get fixed over time, but no one seems to have the exact problem I have. The drive is connected with an IDE connection. Update: The old drive was a Toshiba Samsung SN-S082. I don't know the model number of the new one, but it is HP (I think). Things I have tried to fix it: Mess about with some BIOS settings like enabling AHCI and change some IDE settings. Installing a different boot loader DOES fix the problem but I would like to use grub.

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  • Will this netbook allow me to run mutiple programs without issues?

    - by erik
    I'd like to use a netbook to run mIRC skype Messenger pretty much all at the same time. It this netbook a good choice? http://www.notebookzone.co.za/default/sony-vpc-w216.html Quick Overview Intel Atom N450 (1.66GHz), 2GB Ram /320GB HDD, 10.1" LCD-WXGA:1366 x 768, LED, Windows 7 Starter 32bit, Only 1.19Kg, Web Cam, Wireless, BT The combination of high-resolution wide 10.1" screen and Isolation Keyboard helps to put the Internet at your fingertips anytime you want it. Available in : white / pink / blue / brown

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  • Multithreaded TIFF to PNG conversion

    - by mtone
    I'm working with images of scanned books, so hundreds of high resolution pictures. I'm doing conversion work with Photoshop Elements - I can quickly save them to uncompressed TIFF, but converting to compressed PNG using a single thread takes ages. Do you know a software, ideally simple and free, that would batch convert those TIFFs to PNG in a multi-threaded manner (4 to 8 simultaneous files) to take advantage of those cores and cut converting times? I'm not too worried in slight variations in final size.

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