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SQLite DB borked when opened on a different machine

- by pruefsumme

Hello, I'm using SQLite to store some data. The primary database is on a NAS (Debian Lenny, 2.6.15, armv4l) since the NAS runs a script which updates the data every day. A typical "select * from tableX" looks like this: 2010-12-28|20|62.09|25170.0 2010-12-28|21|49.28|23305.7 2010-12-28|22|48.51|22051.1 2010-12-28|23|47.17|21809.9 When I copy the DB to my main computer (Mac OS X) and run the same SQL query, the output is: 2010-12-28|20|1.08115035175016e-160|25170.0 2010-12-28|21|2.39343503830763e-259|-9.25596535779558e+61 2010-12-28|22|-1.02951149572792e-86|1.90359837597183e+185 2010-12-28|23|-1.10707273937033e-234|-2.35343828462275e-185 The 3rd and 4th column have the type REAL. Interesting fact: When the numbers are integer (i.e. they end with ".0"), there is no difference between the two databases. In all other cases, the differences are ... hm ... surprising? I can't seem to find a pattern. If someone's got a clue - please share!

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How OS comunicates with HW?

- by Jack

Hi, how can program runnig on CPU (mostly OS) acess other PC hardware? Such as Graphic card, HDD and so? From what I read, In DOS, this was done using BIOS calls, specifically INT instruction. But, int instruction should only jump to the certain space in RAM. So, how can some program stored in RAM acess other computer HW, when CPU can acess only RAM, and reeive interrupts? And, does windows use int instructions as well, or is there any new way to communicate with HW? Thanks.

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How can I use my laptop's monitor as my PC's ONLY monitor? (please vote to reopen) [closed]

- by Randell

Please vote to reopen. This is different from Can I use my laptop as a second monitor for my desk computer?, because that question is asking how to use the laptop screen as the secondary display, not as the only display. My PC's monitor just died and I'm not looking at buying a new monitor anytime soon. So I'm thinking of using my laptop's monitor for it. Both machines are running on Fedora linux. Edit: Both machines are connected to the same wireless network. PC needs to log in before it can connect to the network if I'm not mistaken.

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I recently converted my ex HDD from FAT32 to NTFS. now my pc doesn't find or pick up my NTFS HDD

- by Jason Haniball

I recently converted my external hard drive from FAT32 to NTFS using the Command Prompt. Everything was working fine, I copied a 7GB file to it and everything worked. The next day I switched on my PC, I couldn't and still can't find my external 1.5TB hard drive by my computer. I have about 500 to 800 GB of data on it that I really don't want to lose. Its a Iomega Seagate Freeagent HDD. Has no switch, it switched on automatically, don't know if that helps.

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Why won't Windows use the other CPU cores?

- by revloc02

In Windows Task Manager the Performance tab shows the first CPU maxed out, the other 7 just idling along with the occasional spike. What gives? More info: I've got 8GB and only 4.5GB are being used. The Processes tab has no indication of any process hogging processing power. In fact System Idle Process is 98-99. When I program stuff and have like 8 to 12 applications going (several directly unrelated to programming of course) my computer slows to a crawl. Sysyem Info: Intel Core i7-2600K Processor (quad-core with hyper-threading), 8GB RAM, Intel BOXDZ68BC LGA 1155 Motherboard, 500GB HDD

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Is WinRT really as secure as it's made out to be?

- by IDWMaster

Prior to releasing Windows 8, Microsoft claimed that all WinRT apps are cleanly removed from your computer after uninstalling them, and that WinRT apps should not interfere with other running applications, because they are ran in a "sandboxed" environment. Microsoft has also claimed numerous times on Channel9 that Windows 8 apps are not ran in a VM. So my question is; are these claims accurate? If the application is not running inside of a VM, how is it possible to protect the system against malicious code at runtime, assuming the attacker was able to bypass the screening process of the Windows Store system? Microsoft allows "native code" in WinRT apps, so wouldn't it be possible (using hand-coded assembly or some odd pointer manipulation trick to call functions outside of the sandboxed environment and interfere with the rest of the system, if it's really "native code" and not some VM?

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How is the 137GB limit counted in Virtual PC (two systems on one disk)?

- by Nux

I have a dual boot (Win7, XP) physical machine on my old computer which I want to virtualize and move to my new one. So I've uninstalled everything that I can and run shrink from RescueCD (used GParted). Now I have two about 80GiB partitions with a gap between them, so still this seem to be above the given limit. Still the resulting VHD (made with Disk2vhd) is much below the limit (about 110GiB) and both partitions are below the limit. So my question is - is it failing due to the limitations of disk size for VPC or is failing simply because it's a dual boot system. Or maybe it would work if I would move partitions to be close to each other (the gap between them is about 171GB and the whole physical disk is 1TB)?

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Configuring MPI on 2 nodes

- by Wysek

I'm trying to create really simple "cluster" from 2 multicore computers using openmpi. My problem is that I can't find any tutorials on that matter. I don't want to use torque because it's not necessary in my case nevertheless all tutorials give configuration details either about torque or mpd (which doesn't exist in openmpi implementation). Could you give me some tips or links to appropriate manuals? Steps I've already completed: - openmpi installation - network configuration (computers see each other) - ssh password-less login to second computer I tried using machinefiles without further configuration and with just 2 IPs in it. But jobs don't seem to start at all after initialization part. (MPI seems to work because I'm able to scatter jobs on multiple cores of both computers without communication between them).

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How to make a quiet laptop ? [closed]

- by psihodelia

Most modern laptops have very noisy fans. I am looking for a quiet laptop or a small stationary computer which has all its hardware built in a display. Most tasks will be pdf/docs processing, real-time audio processing, web-surfing and skype video chats. Certainly, there is no any fan-less model today; but maybe some of the existed laptops do not switch on their fans so often or implement different solutions? For example, an iPad has no fan at all and it is fast enough for my needs, but it has no normal operating system, so I can't use it for anything but audio chats and web-surfing. Or maybe I can buy a laptop and tweak it to make it absolutely noiseless? Can you recommend me any solution please? Thanks in advance!

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Big Excel File Freezing/Running Slowly

- by ktm5124

Hi, My co-worker has a very large Excel file (over 7 MB) that suffers from the problems of (A) running slowly (B) taking forever to open/save/close and (C) freezing the computer, requiring a restart. I set the calculations to Manual, and I repaired the file, but the file didn't change in file size and it is still having these problems. My questions are: (1) Is there any way around this problem or is Excel just bad at handling ~7MB files? (2) Would upgrading RAM make a big difference? (3) It's possible that we can't afford to spend the money on a RAM upgrade. Are there are any other ways of mitigating the problem? Thanks.

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windows 8 on macbook locks after 2 mins despite high performance settings

- by Mark

I am running my Macbook Prop as a Windows 8 machine using bootcamp and for some reason, when I leave the keyboard/mouse alone for 2 mins it locks the PC (i.e. goes to the lock screen). I have (of course) checked the power settings and I can assure you that it is not set to these settings. I did notice that when I added my work's Mail Account the computer asked me to accept some group policy settings, which I did, so I suspect that this is a group policy setting, but I cannot find it. Can someone help? P.S. I have searched these forums first, and this is different to the PC going to sleep once locked, this is locking while logged in after 2 mins. Thanks.

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Windows 7 - Static DHCP server address with dynamic IP Address

- by mkstreet

Is this possible? On my LAN, I would like to setup the network properties such that the DHCP server's address is static. However, I want that server to hand out the IP Addresses and DNS addresses dynamically. The reason is that some devices on the LAN will try to behave like a DHCP server. For example, we use software to push images to computers on the LAN (our computer software configurations are centrally managed). When that imaging distribution software happens to be running, the machines being imaged will get confused as to which device is the DHCP -- the real one or the machine that is sending them the image. So, to remove the confusion, I would like to setup my Windows 7 images such that the DHCP server address is statically assigned. And then that server would assign the IP Addresses and the DNS addresses dynamically.

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Ubuntu not showing hard drive

- by ojek

I have a laptop which had a broken installation of Windows 7 installed on it. I created a Ubuntu live USB and tried installing Ubuntu over that Windows 7. After a few minutes, I got an error message, so I needed to restart the computer. Now the laptop says that there is no bootable device - reasonable message given that there was an error during Linux installation. However: BIOS can see my hard drive, When I start Ubuntu in live mode, and try either sudo fdisk -l or gparted, it doesn't show any hard disk drives. I am 90% sure that the hard drive is broken, but it is weird that BIOS can see it, and Ubuntu doesn't. How can I be 100% sure about that hard drive? Is there any additional way of detecting my hard drive from Ubuntu?

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Ternary and Artificial Intelligence

- by user2957844

Not much of a programmer myself, however I have been thinking about the future of AI. If a fully functional AI is programmed in a binary environment as is used in current computing, would that create a bit of a black and white personality? As in just yes/no, on/off, 1/0? I will use the Skynet computer from the Terminator series as a bad analogy; it is brought online and comes to the conclusion that humanity should just be destroyed so the problem is resolved, basically its only options were; fire the missiles or not. (The films do not really go into what its moves would be after doing such a thing, but that goes into the realms of AI evolution so does not really fit with this question.) It may also have been badly programmed. Now, the human mind has been akin to a ternary system which allows our "out of the box" thinking along with all the other wonderful things our minds can do. So, would it not be more prudent to create a functional ternary system and program an AI using it so the resulting personality would be able to benefit from the third "maybe" (so to speak) option? I understand that in binary there are ways to get around the whole yes/no etc. way of things, however the basic operations are still just 1's and 0's. Again with using the above bad Skynet analogy; if it could have had that third "maybe" option as part of its core system, it may have decided to not launch due to being able to make sense of the intricacies of human nature and the politics of such a move etc. In effect, my question is; Would an AI benefit more from ternary computing as opposed to binary due to the inclusion of -1, or 2, dependent on the system ("maybe," as I call it)?

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Mysterious "media" volume mounted on desktop Mac OS X

- by Allen

I have a mysterious volume mounted on my desktop that I can't seem to forcibly unmount. I've tried using umount and also diskutil, but it seems to automatically remount itself. I've copied my hdd with Time Machine, and copied it onto a new computer, and it also has the drive mounted on it. It's not pointing to anything and I can't open it, nor can I forcibily remove it by hand with rm -Rf. Any ideas? I noticed this problem after I upgraded to Mountain Lion from Lion. It causes problems because when I try to select a file using the built in Finder dialog box, it freezes for a few minutes because it tries to cache or read into the "media" mounted volume.

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Changing the IP address with a name [closed]

- by fede

I have a web server (xampp) in a particular PC running on my LAN, and I added the following line in the 'hosts' file : 127.0.0.1 mysite. Then, in another PC connected to the LAN, I'm trying to acces the previous web server by typing 'http://mysite/index.php' on the web browser, with no luck. But if I type the IP from the server computer (http://192.168.2.87/index.php) I am able to access the web site. So, what should i configure so when i type 'http://mysite/index.php' I get the same result as http:// 192.168.2.87/index.php ?? Thanx!

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Runas command for user without password

- by user156558

I want to use the runas command in CMD and from Batch files to gain elevated permissions, but I don't have an admin password on my PC because it's my home computer and I'm the only user. Every time I try to use the runas command it asks me for a password, then tells me that blank passwords are not permitted, is there any way round this? I know I can just right click and select run as administrator, but I would much rather have a command that can do it as that is not always an option, and it's just a bit of a pain. I could just be making some kind of basic mistake as I'm not hugely experienced with command prompt, but I'm not completely clueless.

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USB Hub powers down in sleep mode on Win 7 64

- by Andy B

This question has been asked before but not answered. I would like the USB hub to remain on in sleep so I can wake up the laptop from an external keyboard and mouse. I have set all the device drivers by unchecking allow this device to be powered down and disabled selective suspend in control panel but the hub still powers down. If I plug a keyboard or mouse directly in to the PC they remain powered and wake the computer its only when they are connected through the hub there is a problem. I have another PC running Win 7 32. If I set this up in exactly the same way the hub remains powered in sleep. Both PC's are Toshiba Satellites with multi-core celerons but one runs Win 7 32 the other Win 7 64. BIOS settings are the same. Any help would be appreciated even confirmation that this is a feature of Win 7 64.

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How to force Windows to call the partition it installs on C:?

- by maaartinus

I'm going to install Windows XP from a CD and want to make sure it calls the partition it lands on C:. The target partition is the first one on a SATA disk, which is not the first one in my computer. There's no IDE disk there. I don't think I can swap the disks, as I'm using a fake RAID and really don't want to get problems with it. The target partition is on a normal disk. I know it may be unimportant, but I don't want to run in any problems I can avoid. I've seen a question slightly related to it, but I'm not going to install from a USB.

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Homegroup libraries visible but can't be opened

- by majocha

I have 2 Windows 7 PCs in a home network. When I create a homegroup, the libraries I share are visible on the opposing machine but when I doubleclick them nothing happens - no error message, nothing at all. It is the same on both computers. The homegroup works to the extent that the printer I shared is visible and can print from the other computer. Only the libraries are inaccessible. What I tried and checked so far, without result: disabling firewall file and printer sharing, MS Networks client enabled in network properties deleting and recreating homegroup reset homegroup by deleting C:\Windows\ServiceProfiles\LocalService\AppData\Roaming\PeerNetworking unsharing and sharing again the libraries

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I need a script to lockdown the system time to users via gpedit.msc

- by Chester

I need to lockdown the system time on a number of PCs via gpedit.msc and then removing administrators from the group and then adding 'administrator' and 'polling'. Can I do this via a script? Essentially I have to; Run gpedit.msc Computer Configuration Windows Settings Security Settings Local Policies User Rights Assignment Double Click Change the system time Select Administrators Click Remove Click Add User or Group Type Administrator Click Check Names Type polling Click Check Names OK Apply OK Logoff I have to do this for a huge number of computers so is there a batch file I could run on each PC to do this? Your help would be very much appreciated. Best Regards

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Converting an external hard drive to internal

- by Nathan DeWitt

I have a WD Elements 1 TB external drive. I'm in a pinch and I need an internal SATA drive. How do I find out if the drive in here is actually a SATA drive? Edit: The WD Elements is a really nice external drive. I gently pried open the top and slid out a 1 TB Caviar Green hard drive. There were four black rubber brackets that slid off easily. One screw removed the SATA -- USB, and then I slid it into my computer.

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Can't boot after compiling 3.1 kernel, can only get to terminal

- by olssy

Long story short: I tried compiling kernel 3.1 on Ubuntu 11.10 at the same time I had an update waiting for a reboot. Computer would boot to a black screen and would hang there. Ended up installing 11.10 on top of old install with a Live CD. Now I had a purple screen on bootup but it would end up booting. Realized Grub was the problem and tried some stuff but nothing worked. I ended up trying to install propriety ATI video drivers and since that nothing has worked, no grub menu(purple screen) and when it boots into the kernel it ends up hanging, I can sometimes get a terminal up with alt-fx. I have tried removing the ati drivers with the ati script, purging my fglrx driver, reconfiguring my xconf.org and following any tutorial I can find about fixing a broken graphics driver, but to no avail. I've gotten to a point were it seems that the ati propriety drivers are correctly loaded but it still has no grub boot menu and won't boot into Ubuntu. I've chased down my logs and this line is from kern.log: unity-greeter[3269]: segfault at 0 ip b7245cbbsp bf9d3900 error 4 in libgio-2.0.so.0.3000.0[b71ad000+142000] That line leads me to believe I don'T have the correct libgio-2 librairy on my system but have no idea how to find out what package has the correct version... My xorg.conf has no errors and seems to imply the fglrxdrm module got loaded correctly. Would be a bit complicated pasting the whole file here but if it would help I'll post it. LAstly, running fglrxinfo give me: Error: Unable yo open display (null) Any help or link to another tutorial would be appreciated. Thanks.

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Empty MacBook Pro, no SuperDrive. How do I install Windows?

- by MCcz

My situation is this: HDD1: Empty 180 GB SSD HDD2: Empty 500 GB HDD (instead of SuperDrive) Accessories: Windows 8 ISO 64 Gig USB stick Second computer SuperDrive in USB enclosure What I need: Install Windows 8 on the SSD in the laptop What I tried: Create bootable USB – Doesn't work. Macbook doesnt show me USB as an option after holding OPTION key. Install Windows through SuperDrive connected via USB – Doesn't work. On the internet, there are thousands of articles telling me all kinds of solutions, expecting me to have Mac OS on my laptop. Is there any solution to this?

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How to measure startup time and order of Windows services on boot?

- by djangofan

I am not asking how to measure server startup time here. I am wondering if anyone knows of a tool that can measure and show a graph of the startup time and order of all the windows services during system startup. I saw a software program shown on my local Portland news last week that does this but I am unable to remember what it was called or anything else about it. All I remember is that it was a "tech" news story to help computer users with their computers. So, I know the software exists and I am trying to find it.

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