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  • Computer sometimes doesn't boot after power failure, what should I replace?

    - by user1416256
    I have a new computer that behaves strange after a power failure. When I switch off the computer it will not boot anymore. Completely unplugging the computer for about an hour cures the issue for the next boot. The internal leds are working I have no idea where to start looking. What, in your opinion could be the cause of this strange behaviour ? My best bet would be to replace the power supply Would that be a good place to start ?

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  • Computer making strange sound when turned on, ever since power outage

    - by Dot NET
    Recently we experienced a power outage, and the PC was off. However, once the power came back, I switched on the PC and heard a strange noise - almost as if the hard disk or fans were struggling to work. I can't really describe the sound, but it's a laboured, loud sound almost like a jack-hammer. This has been persisting ever since the power outage, however the noise stops after around 10 minutes or so, and doesn't start again until the computer is turned off and on again. At first I thought it had something to do with the HDD, but all my files are intact, chkdsk did not report any issues and performance is 100% unchanged, even in games (so the gfx card is fine, and so is the HDD most likely). My PC setup basically has around 3 cooling fans, but I'm not sure if it's one of these either as the noise actually stops after 10 minutes or so, and if I leave the PC on for 4 hours (for example) the noise never starts again. It's there solely when turning on the PC. I haven't got a UPS, and it's important to note that the computer was not on when the power went out - it was merely plugged in. I then promptly unplugged the PC once the power was out, and only plugged it in again when the power came back. Could it be the power supply? Unfortunately I can't open my tower as I would void the warranty. Are there any tests which I could carry out without voiding the warranty?

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  • Linux networking "jail" for a single process

    - by halp
    I need to tune up a networking app for network specific things like: make it use a DNS server different than the default one from /etc/resolv.conf make sure it does not try to connect to certain hosts/ports using tcp/udp connections I know I can get away with just modifying /etc/resolv.conf and writing some iptables rules, but going for a default DENY firewall policy for outgoing IP packets can trigger malfunctions in other services running on the server. I know I can set up a virtual machine with a whole OS and run my app there, but it seems a bit overkill. Is it possible to have a networking "jail" for a single app (think single Linux process) that could accept iptables-like rules for network traffic (think in terms of IP packets and above) allowed to and from this particular app? Maybe this is achievable through some dynamically loaded library that can deal with the networking layer, the same manner tsocks does, but more fine-grained?

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  • What are some of the best wireless routers for a price-conscious home power-user?

    - by Alain
    I'm extremely dissatisfied with the 'popular' choice for routers in homes and small offices. They are expensive (upwards of 60$), lack a great deal of useful configuration options, and seem to need to be restarted quite often. (Linksys comes to mind). I've been on the market for a good router lately, and slowly collecting a set of requirements I feel good routers should meet. Maximum number of TCP/IP connections. - This isn't something I see any routers advertise, but in terms of supporting torrent applications, I've been screwed by routers that support less than 20 here. From what I understand a fairly standard number is 200, but there are not so expensive routers that support thousands. Router configuration menu - Most have standard menu's that let you set up basic things like your wireless network encryption settings, uPnP, and maybe even DMZ (demilitarized zones). An absolute requirement for me, however, are routers with good enough firmware to support: Explicit Port forwarding Assigning static local ips to specific mac addresses, or at least Port forwarding by MAC address Port, IP and MAC filtering Dynamic DNS service for home users who want to set up a server but have a dynamic IP Traffic shaping (ideally) - giving priority to packets from certain machines or over certain ports. Strong wireless signal - If getting a reliable signal requires me to be so close to the router that I can connect an Ethernet cable, it's not good enough. As many Ethernet ports as possible. - Because I want to be able to switch from console gaming to PC gaming without visiting my router. So far, the best thing I've stumbled upon (in the bargain bin at staples) was a 20$ retail plus router. It was meant to be the cheapest alternative until I could find something better to purchase online, but I was actually blown away by the firmware capabilities. It supports defining reserved bandwidth for certain network traffic, dynamic DNS, reserving local IPs for specific MAC addresses, etc. At 2 am when my roommate is killing our Internet with their torrents, I can limit their bandwidth without outright blacklisting them. I have, however, met serious limitations when it comes to network traffic between local machines. It claims a 300Mbps connection, but I have trouble streaming videos from my PC to my console or other laptops wirelessly. It has a meltdown and needs to be reset once in a while (no more than a couple times a month), and it's got a 200 connection limit. There 4 Ethernet ports in the back but I'm pretty sure the first doesn't work. So some great answers to this question would be: Any metrics you use to compare routers, and requirements you have for new candidates. The best routers you've found for supporting home servers, file management systems, high volume torrent traffic, good price/feature ratio, etc. Good configuration advice (aside from 'use Ethernet whenever possible') Thanks for your feedback and experiences!

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  • Virtual machine won't connect to networking interface

    - by Keyo
    I have moved my virtual box hard drive (.vdi file) from windows7 on a laptop, to windows7 on a desktop. No big deal I thought. The OS is ubuntu 10.10. Now networking is broken. I don't have a solid understanding of windows networking, maybe someone can help. Anyway, the networking no longer works. I've tried to setup eth0. I have virtualbox setup in bridge mode, my wifi connection on windows to an intel card on the virtualbox side. I think it might be something to do with windows not allowing the connection to bridge properly (security issues). I've provided some screenshots, which will hopefully help.

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  • Two Ubuntu Instances (Guest) networking with XP (Host) in virtual box v3.1.4

    - by EnthuCrazy
    So here is my current objective: I need to create two guest instances of Ubuntu Desktop 9.10 in VirtualBox on a WindowsXP host. (This is needed for communications later on.) (this step is almost done) I need to establish networking between all three OS's, the host and two guests (Guest1 - Host - Guest2). I know that generally, to establish networking between Windows host and Ubuntu guest, we set up a bridge connection. But here there are two guests, and primarily I need networking between the two guests (Ubuntu to Ubuntu). So will there need to be a change in tap0 and tap1 interfaces when we set up a bridge, or is there a better way to implement this? Please explain the procedure.

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  • How to find polarity of a power supply that's lacking the customary markings

    - by Nosredna
    If I have a power supply (not a computer power supply, just a battery-replacing wall wart) and it doesn't have the usual polarity marking, how to I know if the tip is positive or negative? Update: I couldn't find my multimeter. I did find a model number on the power supply and typed it into Google. Some guy selling a bunch of power supplies on eBay had checked it and found that it was tip positive, which is what I needed!

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  • Windows 7 Goes to Sleep in conflict with Power Option Setting

    - by Decker
    My Del Dimension E521 running Windows 7 puts itself in sleep mode each night -- despite the fact that I have chosen a power option that specifies NEVER Each morning I find the monitor blank and I have to hit the power button on the PC at which point Windows "resumes". The system event log shows this: Source: Microsoft-Windows-Kernel-Power Date: 3/27/2010 3:21:10 AM Description: The system is entering sleep. Sleep Reason: System Idle My specific power options are: Turn off Display : 20 Minutes Put the computer to sleep : Never Is there some other setting coming into play here?

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  • Latest AutoVue Podcast - Customer Success at Ringhals/Vattenfall

    - by pam.petropoulos(at)oracle.com
    Ringhals, a Swedish nuclear power plant, part of the Vattenfall Group, produces 20% of the country's electricity and is the largest power station in the Nordic region. Ringhals has standardized on AutoVue for most of their engineering and asset document visualization requirements throughout their plant maintenance, design and engineering operations. This audio interview, hosted by Folia Grace, Oracle Vice President of Application Product Marketing, features Harald Carlsson, Documentation Administrator at Ringhals/Vattenfall. Hear Harald describe how they have cut IT maintenance costs, increased productivity, and improved maintenance operations throughout their facility. Click here to listen to the podcast

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  • What does "0 is wrong flag id" mean?

    - by Andreas
    When I edit system files, for example when I edit rules for my trackpoint using this command: gksu gedit /etc/udev/rules.d/trackpoint.rules I get the following errors in the terminal (after closing gedit and saving the file): error: line 10034: 0 is wrong flag id error: line 10034: 0 is wrong flag id error: line 11351: 0 is wrong flag id error: line 11351: 0 is wrong flag id error: line 11849: 0 is wrong flag id error: line 11849: 0 is wrong flag id error: line 15609: 0 is wrong flag id error: line 15609: 0 is wrong flag id error: line 19814: 0 is wrong flag id error: line 23363: 0 is wrong flag id error: line 23363: 0 is wrong flag id error: line 26005: 0 is wrong flag id error: line 26005: 0 is wrong flag id error: line 26846: 0 is wrong flag id error: line 26846: 0 is wrong flag id error: line 28718: 0 is wrong flag id error: line 31695: 0 is wrong flag id error: line 31695: 0 is wrong flag id error: line 35272: 0 is wrong flag id This goes on up until line 150400. The changes are applied as desired, but can somebody explain the error to me as I'm a newbie and just trying to get a clue about the terminal.

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  • Reverse all words in current line

    - by KasiyA
    I have a file and I want to reverse all word in it. Read line as long as (.) not seen, or seen (\n), if found first (.) in line then It is a word , so reverse this word and continue reading for next word in current line until end of file. ex input file: DCBA. HGFE.GI MLK,PON.RQ UTS. ZYXWV. 321 ex output file: (What I Want) ABCD. EFGH.IG KLM,NOP.QR STU. VWXYZ. 123 With this sed script: sed '/\n/!G;s/\(.\)\(.*\n\)/&\2\1/;//D;s/.//' in the entire line is reversed. The wrong output produced by the command above: IG.EFGH .ABCD QR.NOP,KLM 123 .VWXYZ .STU How can I get my desired output? Thanks for your help

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  • Replacing LF, NEL line endings in text file with CR+LF

    - by Tomas Lycken
    I have a text file with a strange character encoding that I'd like to convert to standard UTF-8. I have managed to get part of the way: $ file myfile.txt myfile.txt: Non-ISO extended-ASCII text, with LF, NEL line endings $ iconv -f ascii -t utf-8 myfile.txt > myfile.txt.utf8 $ file myfile.txt.utf8 myfile.txt.utf8: UTF-8 Unicode text, with LF, NEL line endings ## edit myfile.txt.utf8 using nano, to fix failed character conversions (mostly åäö) $ file myfile.txt.utf8 myfile.txt.utf8: UTF-8 Unicode text, with LF, NEL line endings However, I can't figure out how to convert the line endings. How do I do to replace LF+NEL with CR+LF (or whatever is the standard)? When I'm done, I'd like to see the following: $ file myfile.txt myfile.txt: UTF-8 Unicode text

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  • Power Management - Sleep / Wake up Server when accessed

    - by KP65
    I have a headless HP Proliant Microserver with ubuntu installed. This machine has samba shares on it serving media and I usually rdp or ssh into it. Now my issue is I want the machine to go into sleep mode(so the state is saved from ram to the harddrive) and it will seem like it is turned off after an hour of idling. If there is any attempt to access the samba share through LAN I would like it to wake up. Now my motherboard supports this function, can anyone point me in the right direction for achieving this easily? Thanks

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  • How to make 8.04's screen saver enter screen into standby?

    - by Android Eve
    I am using Ubuntu 8.04 and despite using 'gnome-power-manager' to set dpms_method_ac to 'off' for backlight, the screen will not enter standby after set time. Also, "Put display to sleep when inactive for:" (via System-Preferences-Power Management) is already set to 1 minute. Interestingly enough, this only happens when I am logged in. When I am logged out, the screen does go into standby after set time. So I know it's not the screen... Any idea how make Ubuntu 8 screen saver enter screen into standby, while logged in?

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  • VirtualBox 4.1.12 Ubuntu Host Bridged Networking

    - by hidden_premise
    Setup Ubuntu Server 11.10 x64 VirtualBox 4.1.12 One network adapter eth0 with a static IP address My /etc/network/interfaces looks like #Local loopback auto lo iface lo inet loopback #Primary Interface auto eth0 iface eth0 inet static address 10.0.0.6 netmask 255.255.255.0 gateway 10.0.0.1 Need Static IP for Ubuntu Host Static IP for multiple Ubuntu guests My attempt Downloaded the .deb for 64bit virtual box dpkg -i virtualbox.deb Create a VM and install ubuntu server 11.10 x64 from ISO Set the networking mode to bridged and choose 'eth0' as the interface Fail. None of the guides I can find for bridged networking work because everything changed since vbox 2

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  • What does I.T.E stand for when it comes to power supplys?

    - by i-moan
    I wish I could give you more but I have a AC adaptor which I am trying to find ( as it's ... erm kaput ) and it has only a I.T.E power supply number. I can't seem to find where this acronym comes from. Also I wonder if there is a guide to the types of output socket connectors there are as I can't seem to find one that looks the same as mine ( 4 pin male output socket ). Thanks everyone

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  • Blinking motherboard power LED

    - by Corey D
    I was just rebuilding an old desktop PC to be used as a HTPC and the LED on the motherboard that indicates when there is power is blinking fairly rapidly. The only way I can get the machine to boot is to press the power button immediately after plugging it in, and even then I cannot make it into the BIOS. The power supply has more than enough juice to power all of the components, and is from a reputable manufacturer. The motherboard is an Asus and is about 4.5 years old. Is my power supply hosed? Or is it my motherboard?

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  • Will this car adapter power this Laptop?

    - by CT
    I'm looking to buy a number of car power adapters to be used with some Dell laptops. http://www.cdw.com/shop/products/default.aspx?EDC=1382005 ^ This is the item I am currently looking at. Will it be able to power a Dell Lattitude E6500? Looking at the power supply of the laptop, it states that it is a 90W-AC Adapter. The car adapter states that it is a 60W DC - AC Power Inverter. Will this work? Do I need an DC-AC Power Inverter that is 90W or higher? I am nothing close to an electrician, please help me out. Thank you.

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  • Choosing A Power Supply [closed]

    - by Geeks On Hugs
    Possible Duplicate: Power Supply Capacity Formula How can I check if my system needs more PSU power? I'm not sure if it's OK or not to ask a hardware question here. If not please let me know a good place but I've always got good info here so I thought I'd give it a shot. I'm custom building a new workstation for coding (Linux/Eclipse). How do I determine how much power the power supply needs? I'm building a mini ITX system on a budget and so I need to get as small as possible that is sufficient. I'll have a mini itx mobo with on board wifi and bluetooth, 8 GB RAM, an Intel i3 3.1 Ghz processor, 64 GB SSD and a slim optical drive. In the future I might add a descrete GPU, 16 GB RAM, 128 GB SSD. What is the minimum power I need and how do I calculate that?

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  • Computer won't start unless power is removed for ~5 minutes

    - by Paul Tarjan
    I have a fairly standard 2-year old desktop computer (quad-core intel, single hard drive, decent video card, 300W power supply) which recently started acting up. I'm not sure what the cause is, so hopefully you can help. Sometimes (once a week-ish) I press the power button and nothing happens. No blinking, no sounds, no nothing. If I remove the power cord (or flip the switch on the power supply) I hear a capacitor discharge. If I leave it in the "no power at all" state for about 5 minutes then I can put the plug back in and the computer works perfectly. What is the issue? What do you think I have to replace?

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  • Computer won't start unless power is removed for ~5 minutes

    - by Paul Tarjan
    I have a fairly standard 2-year old desktop computer (quad-core intel, single hard drive, decent video card, 300W power supply) which recently started acting up. I'm not sure what the cause is, so hopefully you can help. Sometimes (once a week-ish) I press the power button and nothing happens. No blinking, no sounds, no nothing. If I remove the power cord (or flip the switch on the power supply) I hear a capacitor discharge. If I leave it in the "no power at all" state for about 5 minutes then I can put the plug back in and the computer works perfectly. What is the issue? What do you think I have to replace?

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  • Intel hybrid graphics stuck in power save mode

    - by OZZIE
    I have an Asus UL30V with Intel hybrid graphics. When I bought it it used to switch to turn of the better graphics card to save power and run on a more power effecient one. When I connected the laptop to a power source again I could go to the intel graphics icon on the task bar and click on "switch to enhanced performance mode" or something similar. But like 2-3 months ago it suddenly vanished. I cannot switch modes anymore, it's gotten stuck in power save mode. I can change the windows power setting but that doesn't enable the better graphics card :( What should I do? I've tried restarting the computer and that does not work. I really hope I don't have to reinstall the drivers! It seems like other people have had the same issue: http://en.community.dell.com/support-forums/laptop/f/3518/p/19422695/19994601.aspx , he hasn't even got the same computer as me. I have windows 7 Home Premium x64 Any ideas?

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  • Blinking motherboard power LED

    - by Corey D
    I was just rebuilding an old desktop PC to be used as a HTPC and the LED on the motherboard that indicates when there is power is blinking fairly rapidly. The only way I can get the machine to boot is to press the power button immediately after plugging it in, and even then I cannot make it into the BIOS. The power supply has more than enough juice to power all of the components, and is from a reputable manufacturer. The motherboard is an Asus and is about 4.5 years old. Is my power supply hosed? Or is it my motherboard?

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  • CSS Horizontal Line

    - by Neb
    In my site I added google friend connect. Now on the right where the sidebar is, there is a small line. How do I remove the line because I dont want it there.

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  • Problem of * in Command line argument

    - by Nithya
    Hi, This is simple question only... i did a program in java that accepts input via command line arguments. I get input of two numbers and operator in command line. multiplying two numbers, i have to give input as 5 3 *. But if i give like this, i cant get answer. Y its not accept * in cmd.... waiting for reply guys...

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