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  • How do I negotiate for colo space?

    - by randy melder
    I guess this isn't a technical question, but it definitely is something IT teams deal with, so here goes: I'm looking at getting a rack at a local colocation facility. I'm weighing the options versus building out in a cloud platform. We are REALLY low bandwidth and power. There's a total of six hosts for the total operation. You can assume we use <= 10 amps of power and <= 2Mbps 95th percentile. Do you have any advice for getting the best deal?

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  • Thinkpad speaker turns mute - Linux Codec issue?

    - by Curlew
    At some point a few days ago the speakers on my Lenovo Thinkpad T410 (Model number: 2537A11) suddenly stopped working randomly. This error happens every time I watch a video or listen to a music file. The sound just abruptly stops. At the moment, I can't produce a single sound no matter what I do. I am using Debian GNU/Linux on this laptop and there doesn't appear to be anything else wrong (the fan is working, no abnormal heat (staying around ~40°C), no other obvious errors or problems). Here is the output of a nice program someone pointed me to: martin@martin:~/Downloads$ sudo python run.py --monitor Using temporary directory: /dev/shm/hda-analyzer You may remove this directory when finished or if you like to download the most recent copy of hda-analyzer tool. Downloading file hda_analyzer.py Downloading file hda_guilib.py Downloading file hda_codec.py Downloading file hda_proc.py Downloading file hda_graph.py Downloading file hda_mixer.py Downloaded all files, executing hda_analyzer.py Watching 1 cards ====================================== Sound is working normally and then it stops and the following lines appear: Diff for codec 0/0 (0x14f15069): --- +++ @@ -164,17 +164,17 @@ Power: setting=D0, actual=D0 Node 0x1f [Pin Complex] wcaps 0x400501: Stereo Pincap 0x00000010: OUT Pin Default 0x901701f0: [Fixed] Speaker at Int N/A Conn = Analog, Color = Unknown DefAssociation = 0xf, Sequence = 0x0 Misc = NO_PRESENCE Pin-ctls: 0x40: OUT - Power: setting=D0, actual=D0 + Power: setting=D3, actual=D3 Connection: 2 0x10* 0x11 Node 0x20 [Pin Complex] wcaps 0x400781: Stereo Digital Pincap 0x00000010: OUT Pin Default 0x40f001f0: [N/A] Other at Ext N/A Conn = Unknown, Color = Unknown DefAssociation = 0xf, Sequence = 0x0 Misc = NO_PRESENCE And now there is also an error in the dmesg output hda-intel: IRQ timing workaround is activated for card #0. Suggest a bigger bdl_pos_adj. I changed the bdl_pos_adj to various numbers (-1, 0, 64, 1024) and either there is no change at all or dmesg reports that the adjustment is too big. I wonder if this bdl_pos_adj is the real reason for the error. Here is my hardware information provided by alsa-info.sh website. Okay, i did some serious testing and even installed Windows and now i officially conclude that this is a hard-ware related issue with my Laptop speakers. Reason: The error occurs in my installed Debian Linux, an Ubuntu Live distribution and Windows XP No error-message appears in all of the OS. The sound just keeps running and i can't hear a thing. I tested different setups, including OSS, ALSA and the pulseaudio server on top If i use my new usb-headphones i can hear sound all the time without any sudden silences. So obviously, although hard to believe, my laptop speakers are not okay (never heard of similar cases). I'll award the bounty to anyone who can point me to good tutorials or the procedure how to exchange my T410 speakers (i still have warranty. The laptop was bought in Germany, but now i am in Denmark). Or to someone who can explain me the output from hda-analyzer (big log above).

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  • hibernate formula with column

    - by coolguy
    I have a table with a column that will be encrypted by a trigger after the record is inserted. When I read the column, I need to apply a decrypt function in the hibernate domain class. While saving the object, the value of the column will be saved as such. While reading the column, apply a database function on the read data. @Formula and @Column annotation cannot be applied to an attribute in the entity class. How do I achieve this functionality without using one attribute for saving and another one with @Formula for reading it?

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  • CPU fan turns on and off repeatedly without booting

    - by rnso
    My PC has suddenly stopped starting up. On checking with case open, the CPU fan starts running when the power is turned on, but it stops after about 2-3 seconds, restarts again after about 2-3 seconds and the loop is repeated. There is no beep and nothing appears on the screen. On searching the internet, I found there could be several reasons for this. I tried removing hard-disk, CD drive, tightening connections etc but of no avial. I also tried using a new power supply but the response is the same. Where could be the problem and how can it be solved? Thanks in advance.

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  • format.js generate 406 Not Acceptable error

    - by Denis
    Hello, following code generate a 406 Not Acceptable error. What can be wrong with my code? def remote_create @photo = Photo.new(params[:photo]) respond_to do |format| if @photo.save # add @photo's thumbnail to last import tag format.js { render :update do |page| page.insert_html :bottom, 'polaroids' , :partial => 'polaroid', :locals => {:photo => @photo} end } else format.html end end end Started POST "/photos/remote_create" for 127.0.0.1 at 2010-03-14 14:02:08 Processing by PhotosController#remote_create as HTML Parameters: {"photo"=>{"photo"=>#<File:/var/folders/BT/BTpdsWBkF6myaI-sl3+1NU+++TI/-Tmp-/RackMultipart20100314-285-1y9eq1x-0>, "name"=>"4204497503_a0c43c561d.jpg"}} SQL (0.6ms) INSERT INTO "photos" ("created_at", "filename", "height", "name", "photo_content_type", "photo_file_name", "photo_file_size", "photo_updated_at", "size", "updated_at", "width") VALUES ('2010-03-14 13:02:08.449499', NULL, NULL, '4204497503_a0c43c561d.jpg', 'application/octet-stream', '4204497503_a0c43c561d.jpg', 136710, '2010-03-14 13:02:08.446370', NULL, '2010-03-14 13:02:08.449499', NULL) [paperclip] Saving attachments. [paperclip] saving /Users/denisjacquemin/Documents/code/projects/photos/public/system/photos/224/original/4204497503_a0c43c561d.jpg Completed in 101ms with 406

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  • Hibernate speed, and hard drive temperature

    - by cometbill
    My computer is taking in the region of 4 minutes or so, to hibernate 4GB of RAM. Also, resting my hand on the top of it is rather hot to the touch, so I ran CrystalDisk Info and that is reporting a temperature of 49 degrees C. I It's a Western Digital 5400 rpm drive, I've had it in the laptop since I bought it for most of the 2.75 years I've had it. Power on Count is 1219 Power on Hours is 3940 hours Boot up time is quicker than resuming from hibernate, too. Is there anything I can / should check ? Advice is greatly appreciated.

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  • Radiation from a UPS

    - by Erel Segal
    In our office, there are frequent eletric shortages that harm my desktop computer, so I wanted to install a UPS. However, my office-mates pointed me to papers talking about hazardous radiation from the UPS. The UPS manufacturers themselves recommend to put the UPS several meters away from humans, which is not possible because our office is small (the power is about 0.5 meters from us). As an alternative to UPS, my office-mates recommended that I switch to a laptop, which has a battery so it's immune to shortages. I have several questions: Is it true that the radiation from a laptop battery is lower than the radiation from a UPS? They do just the same thing - supply power using a battery! If the answer to 1 is yes - is there an alternative way to attach a battery, similar to a laptop battery, to a desktop computer? If the answer to 1 is no - how can I prove this to my office-mates, so that they let me use UPS?

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  • PC boots on then off & 30 sec. later on again, it wiil shut off on itself mostly in idle or just unexpecticly

    - by Jody
    This problem started w/ my sons desktop, it would just shut off after a bit of work or stay on for a long time & to get it to unfreeze is to cold boot it, i put a new HDD in & I still have the same issue, RAM is good power supply fan is moving quite as well as all the rest of the fans it has stayed fairly dust free, i'm at a loss ,I have defaulted all the factory settings changed battery & ungraded to a new OS. I still have the same problem. the power light stays on after it has shut down & when upon starting it goes straight to safe mode option page, I start in last good config. reboots again takes 30 sec. to boot & will work again for a while, the only other thing I haven't tried was a graphic card replace, i'm onboard video now & have been.

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  • Random Computer Crashes

    - by Josh W.
    Ok, here's a wierd one for you all. Occasionally my PC here at work will crash in a very peculiar way. My dual monitors will suddenly go blank as if there is no longer a video signal, the USB mouse light will go dark and mouse stays unresponsive, the keyboard lights will not change status when the appropriate keys are pressed (Num/Caps/Scoll Lock). The CD Tray WILL open and close. But the computer will not respond to a ping request. For all intents & purposes it's as if the computer is off, except it wasn't intentional by me. The power light and internal fans are still on and I've now lost any unsaved work. Now here's where it gets wierd. This PC is part of a batch of PC's we got from a local vendor who does our initial system builds. Mine, and 6 other co-workers PCs all have the same issue. Originally we thought it was a bad combination of hardware, but through trial and error the only thing we haven't eliminated are the OS, Mobo & CPU. The problem was so bad for some of them that they ended up going back to their 5 year old dinosaurs in order to get some work done, for me the problem isn't as bad, maybe once every other day or so, but still enough to bite me in the ass if I've forgotten my ritualistic pressing of CTRL-S every 1-5 minutes. In this case we've tried two different video cards, two different power supplies, two different memory configurations, running on a UPS/not on UPS, updating/rolling back video drivers, three different bios revisions. The only things we haven't swapped are the mobo & cpu, mainly because a new mobo means a new Hardware Abstraction Layer, ie re-install of windows and there's alot of other software on this PC that takes forever to reload by hand. There was a base image that our systems team created with all the drivers installed and the basic setup of software our company uses, but they then must customize the setup for us programmers so it takes a while to get a new configuration up and going. I'm a programmer by day and am usually pretty good at diagnosing computer problems whether through trial and error or not. We've pretty much exhausted all the ideas we can think of here, short of a new mobo/cpu. Was hoping someone out there might have anything else we can try.. Relevant Parts: OS: XP Pro 32-bit Motherboard: Intel DG41RQ CPU: Intel Core-2 Quad Q9400 @ 2.66GHz Current BIOS Version/Date Intel Corp. RQG4110H.86A.0014.2010.0306.1151, 3/6/2010 Dual LCD's, Viewsonic VG930m & Samsung SyncMaster 910v (other people have different models, but listed in case there's some very wierd problem with the signals being sent/received) PS/2 Keyboard USB Microsoft Intellimouse BIOS Versions Tried: R 0013 12/23/2009 R 0014 3/6/2010 Video cards Tried GeForce 8400 GS Radeon HD 4350 - ASUS EAH4350 Two Different Power Supplies a 380W & 550W Ram Configurations 2GB - 1 x 2GB 4GB - 2 x 2GB

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  • .NET | Persist multiple objects in minimum number of queries

    - by VarunGupta
    I have a list of objects which needs to be persisted in a SQL Server database table, where each object gets persisted as single record. i.e. List of objects result in insertion of multiple records. Trivial way of saving the objects is to loop over the list and fire a query/stored procedure/etc. for saving that record. But this results in multiple database interactions. Is there a way to persist the list of objects in lesser number of database interactions?

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  • How do laptop battery voltages affect runtime?

    - by Bigbio2002
    I ordered a new battery for my faithful XPS M1710. I'm not sure of the voltage of the battery I have now, but the new one that the Dell rep got me (after 3-4 times confirming my phone number and laptop model number) is 14.8v. I was a bit concerned about potential incompatibilities (as most of the other compatible batteries listed were 11.1v), but I figure that there's no way that Dell would "recommend" batteries that wouldn't work or fry your system. Now, my question is, how does voltage affect battery life? If we assume the needed power draw to be constant, a higher voltage would indicate less amperage needed, therefore the battery would last longer before running out, yes? Or am I missing something? For reference: P=I*V P = power I = current V = voltage (duh)

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  • Passing values from action class to model class in symfony

    - by THOmas
    I have a action class for saving some data to a database.In action class iam getting a id through url.I have to save the id in table. I am getting the id by $request-getParameter('id') I used this code for saving $this-form-bind($request-getParameter('question_answers')); if ($this-form-isValid()) { $this-form-save(); $this-redirect('@homepage'); } in model class i used a override save method to save extra field public function save(Doctrine_Connection $conn = null) { if ($this-isNew()) { $now=date('Y-m-d H:i:s', time()); $this->setPostedAt($now); } return parent::save($conn); so i want to get the id value here . So how can i pass id value from action class to model class is any-other way to save the id in action class itself Thanks in advance

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  • DSL to web connectivity is often lost

    - by broiyan
    I am experiencing a frequent web connectivity problem via a DSL modem. The problem usually shows up as a reload later screen inside of Google Chrome, as illustrated. My DSL service was fine for the first 2 months, but in the most recent month this problem has been occurring. I have this problem several times a day. A few weeks ago, I used to power cycle (off then on) the DSL modem but this usually did not solve the problem. However, in recent days, the power cycle does seem to fix the problem. When the problem occurs, the modem lights do not look unusual. All the lights are green or flashing green. This problem happens regardless of whether I am using ethernet or WiFi for the last few meters between the DSL modem and the computer. What is the likely cause? How can I help the phone company solve this? Their staff are not very effective at troubleshooting this.

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  • Laptop goes black after a minute or so

    - by ZEDA-NL
    I have a laptop that is behaving strangely. When I turn it on, it does everything what it is supposed to do, but after a minute or so I hear a Click and all goes black. It's like it turns off the power. It doesn't matter what the laptop is doing. It also happens when it's just waiting in the Bios setup menu. Has someone experienced this before? Can it be the power supply? Can it be a cooling problem? Any ideas? By the way, it's a Compaq Presario Laptop, maybe 3 years old already.

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  • Dark Windows 7 Screen

    - by user147521
    My Gateway laptop -Windows 7- screen became too dark a few days ago after I finished installing Windows automatic update. I can see nothing unless I use a flashlight. Windows login screen is the only bright screen for few seconds. What should I do to resolve this issue? I checked power-saving/ Power Options settings and rebooting in Safe Mode. I tried to lower the refresh rate but it did not allow me. The laptop adapter type is ATI Radeon Xpress series. I uninstalled and reinstalled the driver. And the driver is up to-date. Any help would be appreciated.

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  • A gigabit network interface is CPU-limited to 25MB/s. How can I maximize the throughput?

    - by netvope
    I have a Acer Aspire R1600-U910H with a nForce gigabit network adapter. The maximum TCP throughput of it is about 25MB/s, and apparently it is limited by the single core Intel Atom 230; when the maximum throughput is reached, the CPU usage is about 50%-60%, which corresponds to full utilization considering this is a Hyper-threading enabled CPU. The same problem occurs on both Windows XP and on Ubuntu 8.04. On Windows, I have installed the latest nForce chipset driver, disabled power saving features, and enabled checksum offload. On Linux, the default driver has checksum offload enabled. There is no Linux driver available on Nvidia's website. ethtool -k eth0 shows that checksum offload is enabled: Offload parameters for eth0: rx-checksumming: on tx-checksumming: on scatter-gather: on tcp segmentation offload: on udp fragmentation offload: off generic segmentation offload: off The following is the output of powertop when the network is idle: Wakeups-from-idle per second : 61.9 interval: 10.0s no ACPI power usage estimate available Top causes for wakeups: 90.9% (101.3) <interrupt> : eth0 4.5% ( 5.0) iftop : schedule_timeout (process_timeout) 1.8% ( 2.0) <kernel core> : clocksource_register (clocksource_watchdog) 0.9% ( 1.0) dhcdbd : schedule_timeout (process_timeout) 0.5% ( 0.6) <kernel core> : neigh_table_init_no_netlink (neigh_periodic_timer) And when the maximum throughput of about 25MB/s is reached: Wakeups-from-idle per second : 11175.5 interval: 10.0s no ACPI power usage estimate available Top causes for wakeups: 99.9% (22097.4) <interrupt> : eth0 0.0% ( 5.0) iftop : schedule_timeout (process_timeout) 0.0% ( 2.0) <kernel core> : clocksource_register (clocksource_watchdog) 0.0% ( 1.0) dhcdbd : schedule_timeout (process_timeout) 0.0% ( 0.6) <kernel core> : neigh_table_init_no_netlink (neigh_periodic_timer) Notice the 20000 interrupts per second. Could this be the cause for the high CPU usage and low throughput? If so, how can I improve the situation? As a reference, the other computers in the network can usually transfer at 50+MB/s without problems. A computer with a Core 2 CPU generates only 5000 interrupts per second when it's transferring at 110MB/s. The number of interrupts is about 20 times less than the Atom system (if interrupts scale linearly with throughput.) And a minor question: How can I find out what is the driver in use for eth0?

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  • X200 Tablet notebook won't start after BIOS Update

    - by THEn
    I have LENOVO X200 Tablet and I ran the BIOS Update and the computer won't start after the BIOS update. When I ran the BIOS update utility it ran everything fine and asked to restart the computer but it wont start screen is blank. I unplugged the power and took of the battery and put them back and still not starting. Now it has [Power On] indicator light on and screen is not starting. I tried pressing F1 button while trying to start the computer but it doesn't do react to anything. Please help how I can start my Tablet. The update utility is http://support.lenovo.com/en_US/downloads/detail.page?LegacyDocID=MIGR-70651 Does any body know if X200 have any kind of hardware switch to reset the BIOS or any thing? What would be the best way to fix my BIOS? Thank you.

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  • PC won't boot with 4 prong CPU connector connected. Motherboard or CPU dead - which one? Both?

    - by scrot
    In the middle of use, my computer shut down. I tried to turn it on but it maybe comes on for half a second, shuts down, then flickers again very quickly about 2 seconds later before giving up completely. So I took everything apart and nailed it down to the power supply, the mobo, or the CPU. I had an extra old power supply around, hooked that up and it had the same problems, so that can't be it. When the 4 prong CPU connector is not connected, the motherboard 'functions' in that it stays on and runs the heat sink etc. Throw in the 4 prong connector and that's when it doesn't stay on. So it must be the CPU, right? Motherboard: ASUS P6X58D CPU: Intel i7-920 Bot are under warranty (supposedly) - should I get both replaced or what?

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  • Modify audio pitch of recorded clip (m4v)

    - by devcube
    I'm writing an app in which I'm trying to change the pitch of the audio when I'm recording a movie (.m4v). Or by modifying the audio pitch of the movie afterwards. I want the end result to be a movie (.m4v) that has the original length (i.e. same visual as original) but with modified sound pitch, e.g. a "chipmunk voice". A realtime conversion is to prefer if possible. I've read alot about changing audio pitch in iOS but most examples focus on playback, i.e. playing the sound with a different pitch. In my app I'm recording a movie (.m4v / AVFileTypeQuickTimeMovie) and saving it using standard AVAssetWriter. When saving the movie I have access to the following elements where I've tried to manipulate the audio (e.g. modify the pitch): audio buffer (CMSampleBufferRef) audio input writer (AVAssetWriterAudioInput) audio input writer options (e.g. AVNumberOfChannelsKey, AVSampleRateKey, AVChannelLayoutKey) asset writer (AVAssetWriter) I've tried to hook into the above objects to modify the audio pitch, but without success. I've also tried with Dirac as described here: Real Time Pitch Change In iPhone Using Dirac And OpenAL with AL_PITCH as described here: Piping output from OpenAL into a buffer And the "BASS" library from un4seen: Change Pitch/Tempo In Realtime I haven't found success with any of the above libs, most likely because I don't really know how to use them, and where to hook them into the audio saving code. There seems to be alot of librarys that have similar effects but focuses on playback or custom recording code. I want to manipulate the audio stream I've already got (AVAssetWriterAudioInput) or modify the saved movie clip (.m4v). I want the video to be unmodifed visually, i.e. played at the same speed. But I want the audio to go faster (like a chipmunk) or slower (like a ... monster? :)). Do you have any suggestions how I can modify the pitch in either real time (when recording the movie) or afterwards by converting the entire movie (.m4v file)? Should I look further into Dirac, OpenAL, SoundTouch, BASS or some other library? I want to be able to share the movie to others with modified audio, that's the reason I can't rely on modifying the pitch for playback only. Any help is appreciated, thanks!

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  • iPad USB Charging Utility for Dell Optiplex

    - by BreakPhreak
    As you probably know already, an iPad requires a certain power on USB port to be charged from. Thus, some motherboard manufacturers (such as ASUS, Gigabyte etc) had released a special driver that recognizes that an iPad is connected to the port and adjust the USB power accordingly. On one of my computers (Gigabyte motherboard) it works fine. But other one is Dell Optiplex 780 and the regular googling by "<motherboard type> + iPad charging" doesn't seem to bring encouraging results. Just for completeness: no, the iPad is not being charged without any special driver installed (out of the box) either. Any suggestions will be welcomed.

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  • No internet access on Windows 7 - part 2

    - by Vnuk
    This is a continuation of my previous question. The problems started when I turned on my wireless connection for the first time. Since then, every time I boot my Windows 7, my LAN connection does not have internet access. In my previous question, I got a key answer (route delete). Now my procedure to get LAN internet connectivity (local network works fine) when I boot looks like this: Power on WLAN Disconnect LAN cable Power off WLAN Execute route delete 0.0.0.0 if 11 Connect LAN cable Now my LAN connection has internet access. Another behavior that I can't explain - while my LAN connection has no internet access, Network and Sharing center refers to it as Unknown network, with a public icon. When I go through the fore mentioned procedure, it is referred to with my home WLAN network name, with status connected, and the Unknown network disappears.

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  • Windows 7: Use VirtualStore technology as user for own benefit?

    - by mfn
    I've researched a bit and came to the understanding that VirtualStore is part of the new UAC feature in Vista/W7 which is the file system part of the transparent data redirection and redirects write access to folders like program files to C:\User\<username>\AppData\Local\VirtualStore\ in lack of applications respecting the LUA principles. Now I'm interested if that kind of transparent redirection can also be used as a power to the user. Here's an example which comes to my mind: I install any kind of software to e.g. D:\Whatever\ThisAndThisApp\ and I set up things that, after initial installation, any write access to this folder is transparently redirected to e.g. D:\MyOwnVirtualStore\Whatever\ThisAndThisApp\file_only_writable_here.txt. Is this thinking too far or can I actually use that power of VirtualStore as a user on Windows 7? I'm using the Professional version of that matters.

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  • XmlSerializer.Serialize doesn't save a file and doesn't throw an exception.

    - by Wodzu
    Hi guys. I am having problem with saving of my object. Take a look at this code: public void SerializeToXML(String FileName) { XmlSerializer fSerializer = new XmlSerializer(typeof(Configuration)); using (Stream fStream = new FileStream(FileName, FileMode.Create, FileAccess.Write, FileShare.None)) { fSerializer.Serialize(fStream, this); } } The problem is that when the user does not have rights to the location on hard disk, this function will not throw me any exception and do not save my file. For example saving to "C:\test.xml" act like nothing happened. And I would like to know if the file has not been saved and it would be good to know the reason why. I know that I could check if the file on given location exists and throw an exception manualy but shouldn't this be done by the XmlSerializer or FileStream itself? Thanks for your time

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  • How to know my wireless card has injection enabled?

    - by shrimpy
    I am playing around with aircrack. And was trying to see whether my wireless card on my laptop can pass the injection test And I end up seeing the following... does it mean my wireless card is not able to run aircrack? root@myubuntu:/home/myubuntu# iwconfig lo no wireless extensions. eth0 no wireless extensions. eth1 IEEE 802.11bg ESSID:"" Nickname:"" Mode:Managed Frequency:2.437 GHz Access Point: Not-Associated Bit Rate:54 Mb/s Tx-Power:24 dBm Retry min limit:7 RTS thr:off Fragment thr:off Power Management:off Link Quality=5/5 Signal level=0 dBm Noise level=-57 dBm Rx invalid nwid:0 Rx invalid crypt:781 Rx invalid frag:0 Tx excessive retries:0 Invalid misc:0 Missed beacon:0 root@myubuntu:/home/myubuntu# aireplay-ng -9 eth1 ioctl(SIOCSIWMODE) failed: Invalid argument ARP linktype is set to 1 (Ethernet) - expected ARPHRD_IEEE80211, ARPHRD_IEEE80211_FULL or ARPHRD_IEEE80211_PRISM instead. Make sure RFMON is enabled: run 'airmon-ng start eth1 <#>' Sysfs injection support was not found either. root@myubuntu:/home/myubuntu#

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