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• Where does power consumption go in a computer?

  - by Johannes Rössel

  Today we had a weird discussion over lunch: What exactly causes power consumption in a computer, particularly in the CPU? Figures you usually see indicate that only a percentage (albeit a large one) of the power consumption ends up in heat. However, what exactly does happen with the rest? A CPU isn't (anymore) a device that mechanically moves parts, emits light or uses other ways of transforming energy. Conservation of energy dictates that all energy going in has to go out somewhere and for something like a CPU I seriously can't imagine that output being anything but heat. Us being computer science instead of electrical engineering students certainly didn't help in accurately answering the question.

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• dell u2410 3dMark Benchmark distortion problems

  - by Scanningcrew

  Ive been doing burn in testing for a new system I have put together and I am running into some video distortion problems with running the 3DMark benchmark tools (Both 06 and Vantage). The graphics will be fine, then sometimes during a test switch the screen will light up with thin horizontal ranibow lines (Something that looks very "glitchy") If i turn the monitor off and back on it clears up. All the tests "pass" and my system gets good marks but it concerns me if I might have problems with games (The screen returns to normal if I dont resest monitor and just let tests pass). I want to return a problem component now before its too late if it is something with the new hardware. Also, I am monitoring temp with thermal laser gun and the card itself is not going above 65c. Any ideas? System: Asrock x58 Xtreme - Last BIOS (1.80) EVGA Geforce GTX 285 w/ latest nvidia drivers (Connect via DVI1) Dell U2410(Set to 59hz refresh 1900x1202 -although I believe benchmarks run 1200x1024) Windows 7 Ultimate 64 12Gb DDR3 1600 RAM

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• How to "restart/repair" an USB port?

  - by Click Ok

  My laptop has two USB ports, but one is broken, so I use a USB hub in the other good USB port. In that USB hub, I use a mouse and keyboard. Suddenly, that USB port doesn't detect the mouse and the keyboard (even with the light of the hub is on), and the only solution that I found is restarting the laptop. But just some minutes and the keyboard and mouse goes undetected again... Is there some method, software, etc. to "restart/repair" the USB port without restarting the PC?

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• http proxy caching headers

  - by David Hagan

  I have a service for which I'm about to upgrade the authentication. However, I'm trying to ensure that I make the right decision about where the encryption algorithms occur. I currently have two options: option 1) the authentication module is deployed to the client as a javascript library over https and executes client-side, so that the client can POST back an encrypted string. option 2) the authentication module is kept server-side so that the client need only POST back an unencrypted string. I know that many http proxies cache/log the query-string (and therefore any query parameters), but does anyone know of any http proxies that cache the headers as well? If the headers are being cached, then I'll clearly want to encrypt the password inside the SSL encryption, because to my understanding the headers of an HTTPS request may not always be encrypted (depending on the capabilities of the browser etcetera). Can anyone shed any light on the caching of headers by http proxies? Do you have one that does, or know of one that does?

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• Windows 7: Screen will power of, or blank and lock, but not both.

  - by Heptite

  For some reason, my Windows 7 (Ultimate, 64bit) laptop will not power off the display and keep it off if I have the screen saver and/or the timed auto-lock enabled. Either the display blanks (and locks) but never powers off, or it powers off for less then a minute, then the back light visibly powers back on and stays on, even though the screen remains blanked until I touch a key or the trackpad. I've tried varying the screen power down time to greater than, less than, and exactly equal to the blank screen/lock time, with no success. Turning the screen saver and the timed auto-lock off does allow the timed display power down in the power settings to work properly. (Note that I am not talking about system sleep or hibernate. I'm talking about when the machine remains running, but only the display should power down.)

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• A minimal Linux distribution for my ASUS EEE PC

  - by Andrioid

  I recently bought myself a ASUS EEE 1000HE and I intend to use it for note-taking and light browsing at the University. The machine has a 10" screen so the interface needs to be very compact. I've already tried: EEEbuntu: Very nice driver support and out of the box experience. But I feel that it is too slow booting and the general experience is too heavy in my opinion. Moblin 2: Looks very cool, boots just fine but is way too unstable to use. Also find it annoying that I can't find hotkey documentation anywhere. Any Netbook OS recommendation welcome (although those specific to my model would be great). There is an entire jungle of distributions out there, so if you've been on a safari, please share your experience.

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• email to sip voicemail

  - by alfredwesterveld

  Hi all, I don't know if this is the correct place to answer this question, but here it goes. I have been googling for a cheap email to sip voicemail service. That is because I have got a Linksys/Cisco SPA-941 phone which has a led which will light up when a new message comes in inbox(somebody calls me). So what I want is the following. I want the e-mail(title only is enough) recorded(By computer voice) and sent to my phone which I can playback when the led lights up. Like I said above I was unsuccessful googling for a service like this and I hope somebody knows if this service exists. Many thanks, Alfred

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• How to diagnose very slow pagefile

  - by svick

  Quite often, one of the applications I use freezes (“does not respond”) for a while, in extreme cases for few minutes. This happens especially when when switching apps. During this time, the HDD light flashes constantly and perfmon show that HDD is used 100% of the time (OTOH, CPU isn't) and that pagefile is being read (which is to be expected when switching apps), but at a very slow rate. When I sort the disk table in perfmon by read or write, the file read and wrote the most is the pagefile, but it's still quite low rate (I don't remember the numbers). How can I diagnose what's causing this? I use Windows Vista, and the computer is quite ordinary two years old laptop.

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• Correlating %RDY in esxtop to CPU Usage in Guest

  - by Joe

  We recently upgrade a number of our VmWare hosts from 4.1 to 5.5 and noticed many of the VMs saw a step-wise jump in CPU usage as shown by the guest VM. We have not yet upgraded vmwaretools on any of the guests, but after investigating a bit more we saw many of these guests with a high %RDY value (50%) when viewed under esxtop. Unfortunately Linux (the guest) just shows "high CPU usage" without any insight into what portion of that is coming from %RDY (VmWare saying, "your guest is waiting on CPU from the host"). Are there any tools, /proc entries, etc. that can shed light on that information?

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• LTO 3 tape drive needing repaired

  - by DO it all Paul

  We have an IBM LTO 3 tape drive that needs repaired and with the £400 price tag i'm having to shop around for quotes. My question is has anyone actually repaired one before and how was in done? The first error LED was showing a 6, then i cleared the mangled tape only for it to start flashing alternate 'o' on the 7 segment display, simliar to a half 8, flashing top to bottom and it would just flash away like that coupled with a flashing amber light. I tried a reset holding the eject button for it to show an 'r' the go back to flashing again as before. I checked the IBM solutions for the codes but this flashing isn't documented at all. Would be great if anyone had any experience in this area. Thank you, Paul

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• Concurrent backups in SQL Server?

  - by Mikey Cee

  We currently have our backups managed by a third party company. There are a bunch of agent jobs created that take full backups (4 times a day) and transaction log backups (4 times an hour). We now want to manage our backups in house, but don't want to disable the third party's jobs until we are sure that we have everything configured correctly internally So I am proposing to have a short period (say, a couple of days) where backups are being taken both by the old and the new system. I am wondering what the ramifications of having these two different systems both manage backups, and the potential pitfalls of having backups taken simultaneously. Is this even supported? If so, and bearing in mind that the system can cope with one backup without any noticeable performance degradation, is it fairly logical to assume that it should be able to cope with two simultaneous backups? Currently the load on the server is fairly light and it rarely struggles. Any advice is appreciated

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• Trying to understand why VLANs need to be created on intermediate switches

  - by Jon Reeves

  I'm currently studying for the Cisco switching exam and having trouble understanding exactly how 802.1q tagging works. Given three daisy chained switches (A,B, and C) with trunk ports between them and VLAN 101 defined on both end switches (A and C), I'm not sure why the VLAN also needs to be defined on the middle one (B)? Note that I am not disputing that it does need to be configured, I'm just trying to understand why exactly. As I understand it, traffic from VLAN 101 on switch A will be tagged as it goes through the trunk to switch B. According to the documentation I have read, trunks will pass all VLANs by default, and the .1q tag is only removed when the frame leaves through an access port on the relevant VLAN. From this I would expect switch B to simply forward the tagged frame unchanged through the trunk to switch C. Can anyone shed some light on how switch B processes this frame and why it does not get forwarded through the other trunk ?

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• Strange IIS/Asp.net Exception Message

  - by Element

  I have a standard asp.net 2.0 application running on IIS 6. I have noticed some strange exception messages in the logs. They seem to be caused by random spam bots trying to submit forms. They are strange because the request string is huge and all the exception details in the event manager are messed up, they have been replaced with %21,%22, etc.. as seen in the screen shot. Is this some kind of exploit or just a bug in the asp.net exception handler/logger ? UPDATE: I traced the requests that are causing this strange log event to a bug in IE8 that causes it to request scriptresource.axd?d={html from page} as described in these links: MS Connect SO - Invalid Webresource.axd SO - IE8 Dropping Memory Pages I am still not sure why these requests would break the IIS log event like seen above, they are just long strings of jiberish being sent to the server, maybe someone reading this can shed some light on it.

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• Dell Dimension 2400 problem

  - by murgatroid99

  I have a new problem with a Dell Dimension 2400 PC. Until yesterday or the day before, it was working fine, but today when I press the power button the light on the power button turns yellow instead of green, the fan behind the processor increases speed until it sounds like a jet engine, and the computer does not boot up. I cleaned out the dust in the computer so that is not the problem. Also, the fan was blowing cold air. Do any of you know what might be causing this and how I might be able to fix it?

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• hardware for pushing buttons

  - by Elazar Leibovich

  Many times I want my computer to interface old hardware. Such as radio, light switch, etc. This mostly involves pushing pressing and moving various buttons and switches. I don't want to buy new hardware I want my computer to interface the old hardware I already have. I thought about it and reached to the conclusion that what I need is a general purpose button-pusher hardware. I need a simple device I can interface by a computer and would be able to push most of the buttons we have in daily accessories, without damaging the button. Is there any such accessory availible?

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• Matte or non-widescreen laptop? Do they exist?

  - by Alan Harris-Reid

  Does anyone know of any matte-screen laptops being sold now (15.6 or 17") in the UK? All I can find is the Dell Vostro 3500/3700 range, but there is a premium of around £200 over the price of their Inspiron range (for the 17" model), and I find it hard justifying the extra cost just to have a matte screen. I do not like glossy screens, but it seems the laptop industry has gone the way of "glossy is better - let's get rid of matte". I have read and heard from other developers that as long as there are no strong light sources to reflect off the screen, one can soon get used to a glossy screen, but I am yet to be convinced. I would also be interested if anyone knows of any non 16:9 screen laptops. I find this ratio too wide and not high-enough for the work I do. 16:10 or lower would be better. Any opinions would be appreciated. Alan

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• My Macbook Pro doesn't give any reaction when pressing the power button

  - by Juri

  An hour ago I closed the display my Macbook Pro. it goes into sleep mode. After dinner I returned, opened the display and wanted to continue with my work, but I recognized it was switched off completely. I tried to press the power button and received nothing. I also noticed that the green light on the power supply plug which is plugged into my Macbook is off. Same thing with a power supply from the Mac of a friend of mine. What could I try? Some suggestions? What could be the problem here?? I already tried using the battery to start, no success, also taking the battery out completely, no success. Even if I press the small button for showing the current battery charge, none of the leds starts. It's like the Mac is completely dead.

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• server 2008 sp2 hung not responding with kvm reset as well

  - by dasko

  using server 2008 sp2 64bit os standard edition with all updates from ms site. server was hung this morning, resetting kvm did nothing, plugging in another usb mouse on the back did not let the mouse light up red on it's optic end. other machines on the kvm worked fine including the mouse. server is rack mounted 4u supermicro systems or superserver. had to hard power off and restart. any thoughts? i burnt this system in well for a couple of weeks before deploying so it is kind of odd that this happened. any help is greatly appreciated, or if anyone can suggest software to install that can maybe send out the email when something like that goes down. i looked for the minidump but nothing. nothing in the event viewers either. gd

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• What would cause Google Music Manager to report different amounts of music between iTunes and My Music?

  - by Thomas Owens

  If I set Google Music Manager to scan iTunes, it reports that there are 3997 songs (which is also indicated if I were to open iTunes and look at my collection). However, if set Google Music Manager to scan My Music folder, it detects 3999 songs. I even deleted all of my songs from iTunes and reimported my My Music folder. iTunes is still reporting 3997 songs. Is there an easy way to find out what is causing the difference between the two counts? I could probably add all of my songs to a playlist, export the playlist into a text or XML file using iTunes, and compare that list against everything in My Music folder to see if iTunes is missing music. However, I was wondering if anyone could shed some light on this before I did that...

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• solaris + dladm + what is unknown state and how to bring it to up?

  - by yael

  I installed Solaris 10 on my netra machine from dladm show-dev I can see which interface are down or up all interfaces are connected to the Cisco switch , and all leds are light's on all LAN cards but I not understand why all interfaces except e1000g0 are in unknown ? Please advice how to bring the unknown interfaces to up ? # dladm show-dev e1000g0 link: up speed: 1000 Mbps duplex: full e1000g1 link: unknown speed: 0 Mbps duplex: unknown e1000g2 link: unknown speed: 0 Mbps duplex: unknown e1000g3 link: unknown speed: 0 Mbps duplex: unknown nxge0 link: unknown speed: 0 Mbps duplex: unknown nxge1 link: unknown speed: 0 Mbps duplex: unknown nxge2 link: unknown speed: 0 Mbps duplex: unknown nxge3 link: unknown speed: 0 Mbps duplex: unknown

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• One time torrent download

  - by joaoc

  I know about bittorrent but have never used it since it tends to be mostly used for illegal download of movies and software. Typically whenever I see a legitimate use for it (Linux distros) there is also a regular download option so I haven't had the need for a client until today. There is a large (500Mb) file I want to download that appears to only be accessible via bit torrent. For a one time use, is there an online resource that converts the torrent to a normal http no-special-client-software download? If not, what is an easy to use and light client to install/uninstall on WinXP for a one time use?

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• SQL Server 2005 / 2008 Licensing question

  - by Jose

  I have read up online, and through some threads here like this one. But I'm still confused and need to see if anyone can shed some light. My company is deploying a clickonce application that will be on multiple computers (about 50). It will be accessing an SQL Server database and I was wondering what kind of SQL Server licensing should I/need to have? The application currently logs in via SQL Server authentication using one SQL Server user. It seems logical that I would just need one user CAL and even through there will be up to 50 connections it should all still work. Am I right?

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• Database modularity with EBS volumes

  - by Eclyps19

  I would like to add modularity to my websites on EC2 instances by encapsulating the site files and the mysql files in their own EBS volumes. The end result that I'm going for is the ability to quickly mount a volume or two to different servers running the same AMI (for testing/development/emergency maintenance, etc), as well as maintain separate snapshots of each. I'm able to do this fairly easily with a single database by symlinking my mounted database EBS to the appropriate places (/var/lib/mysql, /etc/my.cnf, /var/log/mysqld.log), but I'm not sure if it would even be possible be possible to have multiple databases on different EBS volumes running concurrently. Example: /website1/www.website.com /database1/ /website2/www.otherwebsite.com /database2/ Could anybody shed some light on this for me? Is it possible? Is it a bad idea? Thanks.

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• Lockup when unlocking screen saver

  - by chris

  I've had this happen a couple of times - screen saver kicks in, locks the screen, and when I put my password in to unlock it the system just seems to hang. Cursor turns to the busy, HDD light flickers occasionally, but the only thing I can do at that point is power down. This is on a desktop, not a laptop and according to the bios all the power saving is turned off. Has anyone else seen this? Is there a way to prevent it, or at least diagnose the cause?

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• Laptop Suggestions and Alternatives [closed]

  - by Pennf0lio

  Hi, I need some suggestions and alternatives in buying laptops. Me and my Girlfriend are planning to buy laptops. Her budget is $600 and mine is $850. We both love apple products, because of it's elegant design and yet powerful. But we can't yet afford mac laptops.. so we are looking for alternatives. One we see is The Stylish Sony E-Series (white version) see it here. To give you an Idea, Software she frequently use are Photoshop, MS Office and firefox. Mine is Adobe CS4, Cinema4d, MS Office and firefox. We are looking for light, slick and clean interface of a laptop (very close to mac notebooks). Thanks!

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