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  • How can I force WiFi connection to only use ipv4?

    - by krasilich
    I have Broadcom bcm43224 wifi card with proprietary broadcom sta driver. At home wifi connection works well, but in the office when I ping some resource there is a lot of loss packets and I cant browse websites. I have tried another way to check internet connection - download file with wget. wget google.com - very slow speed wget -4 google.com - normal speed So, it seems that the problem is with the ipv6 configuration at the office, can I force my wifi connection to use only ipv4 and completely ignore ipv6 ?.

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  • Sound not working in 12.04

    - by user73658
    I got no sound on 12.04 - it's an amd64 desktop with SB Audigy card that has worked in all previous incarnations of Ubuntu I have tried alsa mixer and sound settings. All volume is up and all mutes are off. I tried installing alsa drive modules and got this: E: Unable to locate package linux-alsa-driver-modules-3.2.0-25-generic E: Couldn't find any package by regex 'linux-alsa-driver-modules-3.2.0-25-generic'

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  • Should I be running VM's(Virtual Box) for development on the same hdd as my os or a external usb (2.0) HDD or usb (2.0) flash drive

    - by J. Brown
    I have a mac book pro (7200 rpm / 8GB ram) and I like the idea of virtualized development environments as I like to experiment with different technologies and don't like to have environmental cross contamination. I would like to know for the vm's I run (rarely 2 at time..almost always 1 vm at a time) should the virtual hdd be on my laptops native hdd or some external form (usb hdd, usb flash, or since i have mac express card based sad ?). I don't mind maxing out my ram to 16GB if thats a better option to have in the mix. Thank you

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  • The Importance of Website Optimisation

    Website optimisation is crucial for any business wanting to succeed online. Having a business website is effectively your calling card on the internet. With an estimated 1,802,330,457 people using the internet worldwide, website optimisation could improve your chances of getting traffic to your website.

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  • Sketchy textboxes over text

    - by xHellghostx
    I have a problem with my Ubuntu 11.10 (up to date) running on laptop with the graphic card ATI Radeon x1200 with the (I think edgers driver since I updated it because of the lag I had) it shows some weird sketchy boxes over any text I open, It's confusing me and I don't know how to fix it.. Anyone can help?![enter image description here][1] Here is a screenshot http://www.mediafire.com/i/?12011zaayo98t8l

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  • Installing Ubuntu in EFI mode Cant go beyond GRUB Menu

    - by Vulcan
    I created a LiveUSB of Ubuntu 12.04.3 LTS using Pendrive Linux. -Created a separate 30GB partition using Windows 8 Disk Management -Disabled Secure Boot (Didn't find an option to disable EFI boot) -Disabled Fast Startup The laptop starts the GRUB menu shows up but it doesn't go beyond that no matter what option i choose. After choosing any option the screen goes blank but the power is still on i can see the power light. My laptop is HP-n012tx processor- Intel i5 4200U Video Card- 2GBnVidia 740M The GRUB menu i see http://i.stack.imgur.com/buEAn.png

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  • Update linux kernel image, How can I do it in safe? (how to revert)?

    - by Kit Ho
    based on this post , i am trying to update my kernel from 2.6.32 to 2.6.35 as my intel video card doesn't work. However, I am very afraid that my update would cause my computer crash and lost all the thing.(does not function , esp for video) I am using ubuntu 10.04, currently version is 2.6.32-40-generic. Does anyone try to update to 2.6.35-32??? If in case it make crash? how can i revert back to 2.6.32??? Thanks Kit

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  • What's the lightest Ubuntu desktop environment? [duplicate]

    - by user242125
    This question already has an answer here: How do I find out which version and derivative of Ubuntu is right for my hardware in terms of minimal system requirements? 5 answers My computer has 1GB ram and a very low graphic card, but I don't know how much powerful it is. My computer is very slow with Ubuntu Unity and I saw that there are many desktop environments which are much faster, even for a slow computer. So, what's the lightest desktop environment.

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  • How to safely upgrade from an older Ubuntu version to a newer one?

    - by NikTh
    How can I safely upgrade an Ubuntu installation from one release to another? What should I do before upgrading to ensure it goes smoothly, and is there any clean-up I need to do afterwards? In particular, do I need to do anything special if I am using packages from PPAs, if I have a graphics card that needs drivers, or if I'm running a custom Linux kernel? This is a general question , but as example we take Ubuntu 12.04 and Ubuntu 12.10

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  • AMD FirePro V4800 &amp; FirePro V7800

    <b>Phoronix:</b> "For those looking into an entry-to-mid-range or high-end workstation graphics card, today we are completing our look at AMD's Evergreen-based FirePro family with a review of the ATI FirePro V4800 and ATI FirePro V7800."

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  • Dental SEO - What Exactly Are Discount Dental Plans?

    A dental plan is a type of club you join where we have a portion of providers and consumers. In a discounted plan, the providers have agreed to supply the services at a discounted rate. Being a consumer, one simply has to display his or her membership card while visiting the service provider. These types of discounted plans do not purport to insurance in any way, they're just discount programs.

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  • Introducing Oracle System Assistant

    - by B.Koch
    by Josh Rosen One of the challenges with today's servers is getting the server up and running and understanding what all of the steps are once you plug the server in for the first time. So many different pieces come into play: installing drivers, updating firmware, configuring RAID, and provisioning the operating system. All of these steps must be done before you can even start using the server. Finding the latest firmware and drivers, making sure you have the right versions, and knowing that all the different software and firmware components work together properly can be a real challenge. If not done correctly, such as if you separately downloading disk firmware or controller firmware that doesn't match the existing OS drivers, you could experience bugs, performance problems, and incompatibilities. Gone are the days of having to locate the tools and drivers media that shipped with the server only to find out that newer versions of software and firmware are available on the web. Oracle has solved these challenges in the new X3-2 family of servers by introducing Oracle System Assistant. Oracle System Assistant is an innovative tool that is built-in to every new x86 server. It provides step-by-step assistance with configuring the server, updating firmware and drivers, and provisioning the operating system. Once you have completed all of the steps in the Oracle System Assistant tool, the server is ready to use. Oracle System Assistant was designed to be easy and straightforward. Starting it is as simple as pressing F9 when the server is booting. You'll need a keyboard, monitor, and mouse or you can use the remote console feature of Oracle ILOM (Integrated Lights Out Manager) to access a virtual KVM to the server from any machine. From there Oracle System Assistant will walk you through each of the steps necessary to set up your server. After configuring the network settings for Oracle System Assistant, the next step is to check for any new software or firmware for the server. Oracle System Assistant connects back to Oracle using your My Oracle Support account and downloads any updates that were made available to you for this specific server. This is where you really start to see the innovation that went into Oracle System Assistant. Firmware for Oracle ILOM and BIOS, operating system drivers, and other system firmware (including for option cards and disk drivers) come as a single bundle, downloading as a single unit, that has been engineered and tested to work together by Oracle. Oracle System Assistant figures out the right combination for your server, so you don't have to. Now that the server has the latest firmware, Oracle System Assistant will next walk you through configuring the hardware. From Oracle System Assistant, you can configure many Oracle ILOM settings, including the network settings and initial user accounts. This ensures that ILOM is accessible and ready to use. Oracle System Assistant is where all parts of the server come together. In addition to communicating with Oracle ILOM and interacting with BIOS, Oracle System Assistant understands and can configure the storage subsystem. Before installing the operating system, Oracle System Assistant can detect the storage configuration and configure RAID for all disks in the system. At this point, the server is ready to be provisioned with the host operating system. You can use Oracle System Assistant to provision a supported OS, including Oracle Linux, Oracle VM, RHEL, SuSe Linux, and Windows. And by using Oracle System Assistant, you can be sure that the proper OS drivers are installed for each of the installed hardware components. With Oracle System Assistant, initial setup of the server has never been easier. If we can innovate around problems and find solutions to make our servers easier to manage, this reduces IT costs and makes managing servers simpler. I think with Oracle System Assistant we have done just that. Josh Rosen is a Principal Product Manager at Oracle and previously spent more than a decade as a developer and architect of system management software. Josh has worked on system management for many of Oracle's hardware products ranging from the earliest blade systems to the latest Oracle x86 servers.

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  • Virtualized data centre&ndash;Part three: Architecture

    - by marc dekeyser
    Having the basics (like discussed in the previous articles) is all good and well, but how do we get started on this?! It can be quite daunting after all!   From my own point of view I can absolutely confirm your worries and concerns, but also tell you that it is not as hard as it seems! Deciding on what kind of motherboard to buy, processor and how much memory is an activity you will spend quite some time doing research on. And that is not even mentioning storage! All in all it comes down to setting you expectations and your budget. Probably adjusting your expectations according to your budget :). Processors As a rule of thumb you want VT-D (virtualization) technology built in to the processor allowing you to have 64 bit machines running on your host. Memory The more the better! If you are building a home lab don’t bother with ECC unless you are going to run machines that absolutely should be on all the time and your comfort depends on it! Motherboard Depends on what you are going to do with storage: If you are going the NAS way then the number of SATA port/RAID capabilities do not really matter. If you decide to have a single server with lots of dedicated storage it obviously matters how much SATA ports you will have, alternatively you could use a RAID controller (but these set you back a pretty penny if you want one. DELL 6i’s are usually available for a good bargain if you can find one!). Easiest is to get one with a built-in graphics card (on-board) as you are just adding more heat, power usage and possible points of failure. Networking Just like your choice of motherboard the networking side tends to depend on how you want to go. A single virtualization  host with local storage can usually get away with having a single network card, a cluster or server which uses iSCSI storage tends to have more than one teamed up :). Storage The dreaded beast from the dark! The horror which lives in the forest! The most difficult decision you are going to make in the building of your lab. Why you might ask? Simple my friend, having the right choice of storage can make or break your virtualization solution. The performance of you storage choice will have an important impact on the responsiveness of your virtual machines and the deployment of new machines. It also makes a run with your budget! If you decide to go the NAS route you will be dropping a lot more money than if you would be having just a bunch of disks sitting in a server and manually distributing the virtual machines over the disks. Platform I’m a Microsoftee so Hyper-V is a dead giveaway for me. If you are interested in using VMware I won’t stop you but the rest of my posts will be oriented on Server 2012 Hyper-V (aka 3.0)! What did I use? Before someone asks me this in the comments I’ll give you a quick run down of what I am using. - Intel 2.4 quad core processors (i something something) - 24 GB DDR3 Memory - Single disk in each server (might look at this as I move the servers to 2012) - Synology DS1812+ NAS - 3 network interfaces where possible - HP1800 procurve managed switch I decided to spring for the NAS as I will also be using it for backups and media storage (which is working out quite nicely with my Xbox 360 I must say). At the time of building my 2 boxes (over a year and a half ago) these set me back about 900 euros each so I can image you can build the same or better for a lower price. Next article will be diagramming what I want to achieve and starting a build on the Hyper V 3.0 cluster!

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  • SQL Server 2005 standard filegroups / files for performance on SAN

    - by Blootac
    Ok so I've just been on a SQL Server course and we discussed the usage scenarios of multiple filegroups and files when in use over local RAID and local disks but we didn't touch SAN scenarios so my question is as follows; I currently have a 250 gig database running on SQL Server 2005 where some tables have a huge number of writes and others are fairly static. The database and all objects reside in a single file group with a single data file. The log file is also on the same volume. My interpretation is that separate data files should be used across different disks to lessen disk contention and that file groups should be used for partitioning of data. However, with a SAN you obviously don't really have the same issue of disk contention that you do with a small RAID setup (or at least we don't at the moment), and standard edition doesn't support partitioning. So in order to improve parallelism what should I do? My understanding of various Microsoft publications is that if I increase the number of data files, separate threads can act across each file separately. Which leads me to the question how many files should I have. One per core? Should I be putting tables and indexes with high levels of activity in separate file groups, each with the same number of data files as we have cores? Thank you

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  • Ideal directory structure for web application

    - by rno
    I'm about to create a user based website and will have to store photo, docs and other data for each user. If I take a silly number like 1 000 000 000 users, I believe than one folder with 1 000 000 000 won't be the fastest thing in the world! So I was thinking of creating something like 1st level : [a-z] 2nd level : [a-z] 3rd level : [a-z] Therefor bobby will be in /b/o/b/by But this also mean that it won't be spread equaly, because there will be very few user starting with a z and many more with a m,s,l ... so I was thinking of using a user id such as "000000000001", "000000000001" etc... 1st level : [000-999] 2nd level : [000-999] 3rd level : [000-999] therefore data of the user 000000000001 will be store in /data/000/000/000/001 then I will be sure to have a maximum of 1000 folder in each level. What do you guys think about it, what I should do or not do ? The server will be running Centos 5.4 with EXT3 on raid 1, if the I/O get's too bad i will probably go for a raid 10.

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  • How do you import CA certificates onto an Android phone?

    - by f50driver
    Hi all, I want to connect to my University's wireless using my Nexus One. When I go to "Add Wi-Fi network" in Wireless Settings I fill in the Network SSID and select 802.1x Enterprise for the security and fill everything out. The problem is that our university's wireless uses Thawte Premium Server CA certificate for certification. When I click the drop down list for CA certificate I get nothing in the list (just N/A) Now I have the certificate (Thawte Premium Server CA.pem) and have moved it to my SD card, but it doesn't look like Android automatically detects it. Where should I put the certificate so that the Android wireless manager recognizes it. In other words, how can I import a CA certificate so that Android recognizes that it is on the phone and displays it in the CA Certificate drop down list. Thanks for any help, Tomek P.S. My phone is not rooted EDIT: After doing some research it looks like you are able to install certificates by going to your phone's settings Location & Security Install from SD card Unfortunately it looks like the only accepted file extension is .p12. It does not look like there is a way to import .cer or .pem files (which are the only two files that come with the Thawte certificates) at this moment. It does look like you can use a converter to convert your .cer or .pem files to .p12, however a key file is needed. https://www.sslshopper.com/ssl-converter.html I do not know where to get this key file for the Thawte certificates.

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  • IIS 7.5 How to disable "Verify File Exists" for siteminder handler

    - by HariM
    We are trying to use ASP.Net MVC with Siteminder for Single Sign on. This is on Windows Server 2008 R2 with IIS 7.5. Siteminder Agent version 6QMR6. Problem : Siteminder protects physical files that are exist. And it is not protecting the folder when we try to access a non existed file. It must redirect to login page even if the file doesn't exist when the user is accessing a protected folder. How to configure in IIS 7.5 that Do not verify a file exist, before authentication by siteminder. SiteMinderWebAgent is a Handler(WildCard Script Map) we created using the ISAPI6WebAgent.dll How to Protect ASP.Net MVC Request with Siteminder? (Added this as My previous question did not solve the problem). MVC Request shows up in IIS Log but not in Siteminder log. Update : Microsoft Support says currently IIS7.5, even in earlier versions doesnt support wildcard mappings on any two Isapi Handlers with * wild card. Currently in my case Siteminder has * wildcard and asp.net mvc (handler is aspnet_isapi) has * wildcard to handle the reqeusts. Ordered priority doesnt work in the wild card mappings case with Just *. Did not convinced with the answer but will wait till tomorrow for them to get back.

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  • Howto make a diff of a bios or backup/ restore all bios settings

    - by sfonck
    Hi, I'm using an Dell M90 Precision Laptop which has a NVidia Quadro FX 2500M graphics card and is running Windows XP. Laptop has been running fine - but a few weeks ago screen went 'white' - restarted computer- bios and startup screens show weird green dots and stripes, normal startup only shows a black screen... only VGA mode works to display something. I've been trying to remove and reinstall the correct drivers downloaded from Dell's website - no solution. I gave up and reinstalled XP - everything was working perfect again. 2 weeks later - again the white screen - tried everything again (flashin new bios also - nothing works) Reinstalled XP - everyhting was working again, so I made a DriveSnapShot of the partition. Today - again the 'white screen'. Ok, no problem ...I was thinking all I needed to do was to restore the DriveSnapShot backup... Few minutes later the backup is restored ... but guess what: video driver does not work correctly... As the DriveSnapShot restored the complete partition, as it was at the time everything was working perfectly, this would mean my driver problems are due to 'settings' in the bios or on the graphics-card itself + these 'settings' can get overridden by doing a new XP-install.... I'm out of options, can somebody help me to find a solution for this problem: Is there some way to backup and restore a bios after seeing some problems? Is there some way to know what is causing this problem like a bios diff utility? Thanks!

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  • Windows Server 2008 Services won't start after patch

    - by Antitribu
    After installing the run of the mill patches today on a Windows Server 2008 (Running as an AD controller and Exchange 2007 Server) the machine came back up with "configuring updates stage 3 of 3 0% complete". The machine had been kept reasonably up to date so this likely was caused by a very recent patch. At the leaste the following patches were installed: KB973037 KB969947 KB973565 Restarting the server into safe mode and then subsequently rebooting (with no changes made) allowed the computer to restart and I can now log in normally. However none of the critical services start; including but not limited to Exchange, DNS and Terminal Services (Obviously if DNS doesn't start other things will break). I am unable to run Internet Explorer but Chrome will work. There are no meaningful errors in the event logs as to why services won't start. Under KDC I have The Key Distribution Center (KDC) cannot find a suitable certificate to use for smart card logons, or the KDC certificate could not be verified. Smart card logon may not function correctly if this problem is not resolved. To correct this problem, either verify the existing KDC certificate using certutil.exe or enroll for a new KDC certificate. This is going to be an evil one to debug and I'm kinda hoping someone has encountered it and knows the answer off hand. Thanks all.

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  • Disabling DNS Registration on Server 2008 R2

    - by WaldenL
    I want to tell a server 2008 R2 machine to NOT register it's IP addresses in DNS. I go into the Advanced tab on IPv4 and turn off "Register this connection's addresses in DNS" simple! But... the addresses are updated in DNS anyway! And actually the A record is eventually removed from the DNS server. I've confirmed that the checkbox is off by looking at it myself, and by checking the RegistrationEnabled registry value for that adapter. Both confirm that the registration is off. I've turned of DNS debug logging on the DNS server and I can see DNS Update requests coming from the server in question! This should not happen. What's even odder is that eventually (several hours) the A record for the server (which I added by hand!) is removed from the DNS server. I've also confirmed that scavaging is off on both DNS servers in the domain. Ideas? Edits: Per the comment: The server has static IP addresses. However, it's got two of them on one adapter. Since I'm in a VM (HyperV) environment I just spun up a second adapter and moved the second IP to the second adapter. I set the first adapter to auto-register (since that's the IP I want anyway) and the second adapter to NOT auto-register. We'll see if this is any better. Not any better. On a reboot of the server the registration was removed from DNS. Seems both cards are still contacting the server. Based on the DNS log the card that shouldn't register in DNS is registering a 'delete' request. And then the card that should register is registering an add request but that's ignored. I'm totally confused at this point.

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  • AsteriskNow Migration / Shared Extension Space

    - by Aaron C. de Bruyn
    I am testing the possibility of migrating from an old Avaya phone system to AsteriskNow. The migration would cover several hundred phones--but spread out over several years. (Management wants to move buildings to the new phone system one by one as cables get cut or time permits.) Two other directive is that extensions must not change and they want a GUI that other admins (non-Linux geeks) can manage. They currently use 9XXX for all extensions. We linked the Avaya and Asterisk box via PRI card and they both are communicating. From the Avaya side, if we move (for example) extension 9001 to Asterisk, we forward the call over the PRI to the AsteriskNow box and the SIP phone rings. In AsteriskNow we have an outgoing rule '_9XXX' that routes all 4-digit extensions starting with 9 back to Avaya. Here's the trouble. Dialing 9001 (the extension moved over to AsteriskNow) causes the call to be routed out the PRI to the Avaya box, then the Avaya box routes the call back to Asterisk, and Asterisk routes it to the SIP phone. As we get more and more users switched over, it will use up more and more channels over the PRI card. Is there a way I can ask Asterisk to check it's local extensions first--then forward off to the Avaya system if it starts with '_9XXX'? (I know how I can do it when editing the raw config files, I'm just looking for a way to do it in the GUI so other admins can manage it if necessary.) As a last-ditch plan, I know I can specifically add '_9001' as an outgoing call rule and sent it directly to extension 9001--but I'd really hate to do that for several hundred phones

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  • Building new computer, turns on, but no post

    - by addybojangles
    Pardon my ignorance here, finally decided to put together a computer and egads. I purchased a new motherboard, power supply, processor, video card and memory. ASUS M4A79XTD EVO AM3 AMD 790X ATX AMD Motherboard OCZ Fatal1ty OCZ550FTY 550W ATX12V v2.2 / EPS12V SLI Ready 80 PLUS Certified Modular Active PFC Power Supply AMD Phenom II X4 965 Black Edition Deneb 3.4GHz 4 x 512KB L2 Cache 6MB L3 Cache Socket AM3 125W Quad-Core Processor XFX HD-577A-ZNFC Radeon HD 5770 (Juniper XT) 1GB 128-bit GDDR5 PCI Express 2.0 x16 HDCP Ready CrossFireX Support Video Card G.SKILL 4GB (2 x 2GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Dual Channel Kit Desktop Memory Model F3-12800CL9D-4GBNQ (originally had links for you guys, but I lack the rep, sorry!!) And I've got it all in the tower. I put in power supply, installed processor on motherboard, installed heatsink, put in ram, and I am using an older IDE hard disk. When I start the computer, the monitor tells me "check signal cable." As far as I can tell, the heatsink on the processor is spinning, the power supply is on (obviously), and the green LED on the motherboard is on. I originally only had the bigger output plugged in to the motherboard (what I saw in a YouTube vid as well as the mobo instructions), but after doing some research, it said plug in the other ATX power supply. Which I did. And trying to power the computer results in nothing. No beeps on startup, no post, anyone have any ideas? Your ideas and help is greatly appreciated.

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  • Are these computer parts compatible?

    - by Jcubed
    so I'm building a computer and i want to know if all these parts are compatible. case: http://www.amazon.com/Xion-Gaming-Steel-Tower-Computer/dp/B002139YSS/ref=sr_1_1?ie=UTF8&s=electronics&qid=1270923001&sr=8-1 power supply: http://www.amazon.com/Thermaltake-W0121RU-PurePower-Version-PCI-Express/dp/B0015MCMRG/ref=sr_1_1?ie=UTF8&s=electronics&qid=1270924656&sr=1-1 motherboard: http://www.amazon.com/GIGABYTE-GA-EP45-UD3P-LGA-Intel-Motherboard/dp/tech-data/B001HH2WE2/ref=de_a_smtd processor: http://www.amazon.com/Intel-Processor-1333MHz-LGA775-BX80570E8400/dp/B00116SLYY/ref=sr_1_1?ie=UTF8&s=electronics&qid=1270924524&sr=1-1 hard drive: http://www.amazon.com/Western-Digital-Caviar-Black-WD1001FALS/dp/B001C271MA/ref=sr_1_1?ie=UTF8&s=electronics&qid=1270924586&sr=8-1 DVD/Blu Ray Dive: http://www.amazon.com/LITE-Blu-ray-Internal-Optical-iHOS104/dp/tech-data/B002EE996Q/ref=de_a_smtd Graphics Card: http://www.amazon.com/Sapphire-Radeon-100252HDMI-PCI-Express-Graphics/dp/B001SJLLTQ/ref=sr_1_1?ie=UTF8&s=electronics&qid=1270924798&sr=1-1-spell Sound Card: http://www.amazon.com/Creative-Labs-SB0570L4-Blaster-Audigy/dp/B000LP0R3E/ref=sr_1_1?ie=UTF8&s=electronics&qid=1270924850&sr=1-1 Memory: http://www.amazon.com/Corsair-TWIN2X4096-8500C5DF-Dominator-PC2-8500-1066MHz/dp/B0014Z0Q04/ref=sr_1_1?ie=UTF8&s=electronics&qid=1270924896&sr=1-1-spell OS: Ubuntu 64-bit

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