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  • Getting into the details of game engine programming

    - by Darkslash
    I am interested in learning game programming, but I really have an interest in the lower level engineering in games. I have OpenGL experience, and I am really interested in learning more about implementing AI, Physics, etc. I have a computer science degree, so I really like getting into technical stuff. Many times when I ask about this sort of thing, I get a lot of "Use an engine", "Use Unity3d", "Why waste your time writing code that already exists", etc, etc. My idea was to use simpler libraries such as SFML or XNA so that I could learn how to implement the more complex systems. The thing is, although I do want to write games, I want to learn things that using something like Unity simply doesn't teach you. My goal is not to make a current generation quality 3D game to sell, I just want to make some cool smaller games and learn all I can about the programming side of game development. Is this something that people just do not do anymore? It seems like everywhere I turn people are using Unity or UDK or GameMaker. I fully understand why you would use a tool like these, but I cant see how they would suit my purposes. So where does someone like myself turn? Am I trying to learn something that people just do not bother doing anymore? Is the innovation in this area gone and just all about gameplay now? I'm sorry if this question seems silly, but I am genuinely interested in knowing more about this and meeting more people who are interested in this sort of thing.

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  • Hidden bootloader

    - by Jack
    I need a bootloader that will work as described: I want my computer to boot Windows, that is my main OS installed on a primary bootable partition. However, I'd like to have a 2-3 second span with blinking cursor, before Windows starts. If I press any key in that period it should launch Ubuntu from a small Truecrypt-encoded partition, upon providing a correct password. In other words I'm looking for a hidden bootloader that would expose itself only when a key is pressed during a certain time. Do you happen to know anything like that?

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  • Random timeout now and then

    - by KenavR
    Maybe this is a to generic question, but since we have this issue for quite a while now, I give it a shot. We have some applications which use HTTP for the connection between the client (website or fat-client) and the server. The Computer who runs this applications is in a Network behind a firewall and a proxy, the server isn't inside the same network. The problem is that every now and then the https Request times out and depending on the Client the Application "hangs" or does some other funky stuff. The problem is definitely inside our network, because if i try the applications outside our network it works fine. Can you give me a hint where i can most likely find the problem?

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  • facebook keeps freezing Chrome and Windows

    - by missingfaktor
    Hi, everyone. I am a Windows 7 and Chrome user. Lately (since past few months) my Chrome has been freezing, taking down whole operating system with it, leaving resetting the computer the only choice. Recently I discovered that the issue was with facebook tabs, and when I close those tabs (if it's not too late!), I can save Chrome and Windows from a complete crash. This is very annoying. Is there a solution for this problem? Maybe uninstalling/reinstalling some plugins? Please help. Thanks. PS: Let me know if for helping me with this issue you need to know the list of extensions I have installed. I'll provide it in as an addendum.

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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 get rid of duplicate administrators on 2 macbook pro's

    - by BCITY
    I got a new MacBook Pro (insurance payout) and passed my old one (previous generation MacBookPro 2008) on to a staff member whose MacBook Pro died. I used carbon copy to move my data to the new laptop but couldn't do the same with her move as the older Macbook wouldn't allow it as it was on an old OS. Ended up just migrating her software onto my old MBP. Now however, they both have the same admin identities and her computer is synching with my mobile me account. Can I change the administrator identity and save all her applications? I am hoping that I don't have to wipe and reinstall everything to change her computers identity.

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  • Triggering GDM login on a remote machine

    - by creator
    I have to briefly describe the situation. We are planning to make a computer classroom with workstations running Ubuntu 10.04. Since making accounts for each student has not been considered reasonable, we decided to make accounts for each student group. We don't want students to share their passwords between groups so the solution would be not to give them passwords at all, but let the teacher log them in instead. Obviously he shouldn't go from one machine to another typing in credentials by hand, so we need some script that will connect to a remote machine by ssh and make GDM (or probably any other login manager if GDM cannot serve this purpose) log in specified user. I couldn't find any solutions, as well as I haven't noticed anybody in similar situation asking for help, so my question will be: can the scheme described be realized and if yes, then how? Thanks in advance.

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  • USB 3 adapter for a dell 2850 with PCI (or PCIX) ports

    - by Don Dickinson
    Does anyone know if there is a plain PCI (or PCIX) USB 3 adapter. i understand the bandwidth of PCI < USB3, but it still beats the heck out of USB 2. i have some older dell 2850s that do not have the PCI E ports that most USB 3 adapters require. i'd really like to get usb3 in those servers. i searched the internet but didn't see any. the local computer store said they only had pcie adapters. tia, don

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  • How can I change the default keyboard layout in Ubuntu 10.10?

    - by startoftext
    Ubuntu keeps detecting my keyboard layout as Romanian. It almost always does this on a reboot and some times on waking from sleep. Some times it just randomly changes back to Romanian while the computer is on. I always set it back to "USA" in the keyboard preferences and delete the Romanian layout. What files configure this in Ubuntu? I looked in xorg.conf and did not find any keyboard settings. How can I set this to USA permanently? I have a laptop with a typical US layout built in keyboard and I also have an apple keyboard that is also US layout connected via USB. I have run other distributions on this same setup before and never had this happen.

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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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  • 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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  • 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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  • 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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  • Setup IPv4 local on IPv6 VPS

    - by A.D.
    I have a dedicated server running multiple IPv6 only OpenVZ containers. I want them to be able to communicate with the IPv4 internet, but I realized that isn't going to be possible with IPv6 only. So they need to have an IPv4 address as well, not sure if a local address will work for it, but pretty sure it should. I added 169.254.1.100 in the container .conf file, but when I try to start it, I get this : Adding IP address(es): (the IPv6 address) 169.254.1.100 arpsend: 169.254.1.100 is detected on another computer : 00:04:9b:f2:b0:00 vps-net_add WARNING: arpsend -c 1 -w 1 -D -e 169.254.1.100 eth0 FAILED I did a lot of research, and searched serverfault before posting this, but found nothing relating 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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  • Looking for a way execute a task on all files in a directory (recursively) on Windows

    - by stzzz1
    I have a huge number of mp4 video files that needs to have a volume boost. I need a way to execute a ffmpeg audio filter on all files in a specified base directory (and in subdirectories as well). My problem is that I'm working on a Windows computer and I have no knowledge of its shell syntax. I would like to do the equivalent of what this bash script does : TARGET_FILES=$(find /path/to/dir -type f -name *.mp4) for f in $TARGET_FILES do ffmpeg -i $f -af 'volume=4.0' output.$f done I spent quite some time this afternoon looking for a solution but the recursive nature of what I need (that is so simple with find!) isn't too clear. Any help would be greatly appreciated!

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  • Find out what resource is triggering bad password attempt?

    - by Craig Tataryn
    Background: Have a problem at work where I am constantly being locked out of my computer. We are in an environment that has a Domain Controller and we use Active Directory for authentication. By going through my normal workflow while on the phone with Desktop Support we were able to track the bad password attempts that were causing the lockouts to an application: "Eclipse". This is the application I use to do software development. I immediately thought it was a cached password for our SVN server that's the culprit, however the desktop support person couldn't tell me which resource the password attempt was being made against (i.e. which URL for instance). Question: Is there a way that I can monitor bad authentication requests made by an application on my desktop and find out what resource they are attempting it against?

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  • suddenly can't connect to Windows 7 PC from xbmc

    - by Damon
    I have xbmc installed on a softmodded classic xbox and all of a sudden I cannot connect to the shared folders on my Windows 7 PC. Well, it can connect but it wants a username and password, but none exist on my computer. It's been several weeks since I last used it, but it was working fine then! and no particular changes I can think of aside from I guess a few Windows updates. I've seen reference online to Windows Live essentials causing issues with file sharing, but I don't even have that installed. And I made sure to tick 'turn off password protected sharing' in my advanced network setup. I had the guest account turned off and working fine before, and tried turning it on but no luck. I can access my shared folders fine from other Computers and a ps3. I've read a couple threads of similar situations on various folders and none of their solutions have worked.

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  • Why Can't Computers Off My Network See the Site?

    - by nmagerko
    Have just set up Apache, PHP, MySQL, etc. on my Ubuntu OS, and I was wondering why computers that are not on my network can not see the basic index.html that Apache uses as the default. I set up the static ip address for my computer, and I use 192.168.1.100 for computers to view the simple site. Is there something I am missing that will allow others to access my site? (It is REALLY simple; no graphics, CSS, etc.)

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  • TrueCrypt - "Warning! Password locked: Fixed disk0" error message on boot

    - by Tibi
    TrueCrypt - "Warning! Password locked: Fixed disk0" error message on boot. When i start my laptop (Acer TravelMate 2410). after the starting memory check, the screen goes full black, and a message appears for about 3 seconds: Warning! Password locked: Fixed disk0 and after that, disappears, and next message comes out: Operating System Not Found and all stops here. Windows Xp was installed on it, before this came. TrueCrypt cd (witch was made during the process of full encryption) is not working, not in restoring MBR, no even in decrypting my drive - completely useless. Note: I detected some short of boot sector errors (i dont know the amount) on my drive before this happened. Please, i would greatfully thank every comment, or suggestion, because my computer is unusable now. The HDD is a Samsung HDD, 160Gb. Other preferences: Acer TravelMate 2410 Notebook, 2 Gb RAM, 1500 Mhz Intel Celeron M processor. Regards

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  • Bluetooth connectivity

    - by Viniketa
    computer: Samsung All in One PC OS: Windows 7 (up-to-date) BT Radio: Broadcom I have Bluetooth speakers I have successfully used with the system in the past. In fact, I had them set as default speakers so audio would transfer when I turned them on. No longer. Now, they show as 'disconnected'. Asking for connection gives no response. Option to set as default is greyed out. Bluetooth view utility gives an error of 10049 when I try to connect (supposedly, the means an invalid device address). I uninstalled the device and re-installed. No help. Any advice? Thanks in advance.

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  • Help me convert my gaming headset plugs (mic & stereo sound) to a single 2.5mm monaural plug

    - by Flotsam N. Jetsam
    I have a seldom used piece of computer hardware I'd like to connect a gaming headset to. The headset has two 3.5mm plugs (mic and sound) like this: The jack I need to plug into is a 2.5mm monaural (don't ask me why--I know it sounds goofy but it's for someone else who's very picky). I googled a few different ways but I could only find splitters such as this for going from 2 x 3.5mm to 1 3.5mm. If I could find one that could combine it properly to 1 3.5mm, I could then find a 3.5mm to 2.5mm adapter. I know I could probably vivisect and work something out, but I need it to be very clean. Any ideas?

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  • Is there a time machine equivalent for windows that can back up network files?

    - by Jim Thio
    This question is similar to Does an equivalent of Time Machine exist for Windows?, with one difference: The files I want to back up are on a network drive. The computer on that network drive is running Windows XP. I want to back up data on Windows 7. How would I do so? I'd like something similar to Mac OS X' time machine. So copy of data every hour, day, week. Then thinning out, data gets deleted automatically as time goes by. For example, the data for last day is kept as hourly snapshots. For last week, as daily snapshots every day. And for last month as weekly snapshots. How can I achieve this?

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  • Why is my USB data transfer so slow?

    - by Dave M G
    Whenever I do any kind of file transfer using USB, whether to a USB stick, or with my Android phone, or anything else, it is ridiculously slow. It says 59.8 KB/sec, which would be an awesome speed if this were 1991 and I was using a modem to dial up to my local BBS. Surely USB technology is better than that...? 37 seconds to move less data than the equivelent of 1 MP3 file? Also, regardless of what it says about speed and time, the reality is much, much slower. I routinely see it say something like "37 seconds left" and have to wait for minutes. Sometimes, if I want to move large amounts of files, it can say it will take 8 hours or more. Is this normal? My computer may not be the most awesome on the market, and about a year old, but it's an i5 with 4GB RAM and modern components, so surely this isn't the hardware's fault. What can I do to get better USB data transfer performance? Also, I did look at this question, but my newbie eyes don't see anything that look like an actual solution, just a lot of discussion about what transfer rates could or should be. Update: As requested in the comments, I've generated a whole bunch of output from the command line, and put it on Ubuntu Pastebin. Please see it here.

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