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• How to clean this Dell Precision M6400

  - by Daniel Pratt

  I have (well, ok, my employer has and I use) a Dell Precision M6400 notebook. It's a decent piece of hardware, but I have at least one major gripe: It's a dust and...uh...crumb (I repent! I repent!) magnet! And I cannot seem to exorcise the dust/crumbs from it! There is a strip of metal above the keyboard that is punched full of tiny holes. Well, maybe it's better to describe them as 'pits'. If a sufficiently small particle finds its way into one of those pits, there is only about a 50% that I will manage to get it out. Consequently, there is now a chorus of tiny little particles silently chiding me about eating cookies a cracker whilst I browse the intarwebs. Does anyone have any suggestions about how I could remove these particles from this machine...while still preserving the function of the machine?

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• How can I select a default interactive console in pyDev?

  - by dorian

  Using PyDev 2.7.1 in Eclipse 3.7.2, when I hit Ctrl-Alt-Enter to open a new interactive console, I get a dialog asking me what type of console I'd like to start ("Console for currently active editor", consoles for Python, Jython, Iron Python etc.). Now this selection dialog has no default entry and keyboard selection doesn't work, meaning that I have to use my mouse every time I need a new console, which is kind of tedious. I've checked Preferences - PyPev - Interactive Console, but found no interesting options there. Is there any possibility to define a default interactive console type so that I just have to hit Return when the dialog pops up or, even better, skip this question altogether?

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• Resources for writing kernel in C

  - by anon

  I don't want to write my own boot loader -- happy to use Grub. I just want to implement pre-emptive multi threading, a basic file system, and virtual memory. I want something that can run on top of qemu. What's a good resource (book / tutorial) for accomplishing this goal? Thanks!

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• serialport or USB port?

  - by I__

  i am using this code:: http://stackoverflow.com/questions/3033324/c-serialport-question/3033402#3033402 to check what port my USB phone is connected to. supposedly USB would be a virtual com, but this seems to be incorrect i used the above code to detect where my phone is and the output is just garbage. is there a way for me to get c# to speak to my usb port so that i can speak to the gsm phone connected to it?

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• I can't get my Android program to run correctly on an AVM in Eclipse

  - by Wes

  This is a simple question about getting started with developing Android apps using Eclipse. I have followed all the tutorials on the developer site for installing Eclipse, the SDK and the ADT plugin. When trying to run a simple Hello World program, everything seems to compile correctly, but then the virtual machine comes up empty. In the Console Window it reads: The program then just sits and my text never comes up. Any idea with what the problem could be?

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• Access specifier while overriding methods

  - by Pradyot

  Assume you have a class that defines virtual methods with the access specifier public. Can you change the access specifier on your overriden methods? I am assuming no. Looking for an explanation.

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• Any way to get back Chrome's Dialog box for cache clearing instead of the new tab?

  - by Stuart P.

  As of today's release of chrome (Tuesday, March 8, 2011) on both Mac & PC the settings are now in a tab (chrome://settings/advanced), needless to say when you're clearing your cache very frequently (cmd-shift-delete on mac, cntl+shift+delete on PC) it's quite tedious going back and forth in tabs. The click & clean chrome extension doesn't have a mac counterpart (plus I like the keyboard much more than the mouse). I've searched and have yet to find a way to get a dialog box instead of the new tab.

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• My computer won't go into standby or hibernate

  - by Thomas B.

  Hi. I have a problem that I first noticed yesterday. Whenever I would press the half moon standby button on my keyboard, my computer would go to sleep. I also have a shortcut on my desktop configured to put my computer into hibernate. But now whenever I try to put my pc in sleep or hibernate mode, my monitor goes black for a few seconds but then comes back on at the login screen. I haven't installed or changed anything other than create a couple logical partitions in the hfs+ filesystem. (still in the process of trying to triple-boot) Any help would be great, but for now I'm going to bed. Will check back in the morning.

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• [Linux] Bind/map Character to alt+[some key]?

  - by Paul

  OS: Ubuntu In programming and various terminal programs (Screen, Vim) the [, ], { and } tends to be used a lot. I'm using a Norwegian keyboard where these are placed such that I have to stretch my fingers a bit too long for whats comfortable. To make it easier I though I'd try to make alt+[some key] be one of these characters. Is there a way that I can bind, say alt+æ (Norwegian letter) to '{' system wide? Btw, is such thing called binding, mapping or something else? I'm getting a bit confused by the terms... :)

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• Computer not booting, black screen, no beeps

  - by Michael Gaddass

  I bought a pre-owned computer on Ebay. It booted fine, had to reset due to it not detecting USB mouse, but it detected the USB keyboard. Booted fine again, then I tried to install Ubuntu Desktop, when it was installing I got a phone call, when I'm answering it, I find a Blue screen of Death. I reboot the computer and nothing, no BIOS boot, no beeping, but one of the fans was on. I opened the cover and found a large amount of dust, removed it, still not booting. I'm a complete novice with computer repairs, the most advanced thing I did was take a 286 harddrive and replace a 486's damaged harddrive with it (put the drive into the 486 that is), what could possibly be causing this?

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• Reopening serial port fails if not closed properly with CloseHandle

  - by superg

  I am working with USB device on Windows that is seen as a virtual serial port. I can communicate with the device using CreateFile and ReadFile functions, but in some cases my application does not call CloseHandle (when my application in development crashes). After that all calls to CreateFile fail (ERROR_ACCESS_DENIED), and the only solution is to log in to my computer again. Is there any way to force closing the open handle (or reopening) programmatically?

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• SQL Server 2008 takes up a lot of memory?

  - by Ahmed Said

  I am conducting stress tests on my database, which is hosted on SQL Server 2008 64-bit running on a 64-bit machine with 10 GB of RAM. I have 400 threads. Each thread queries the database every second, but the query time does not take time, as the SQL profiler says that, but after 18 hours SQL Server uses up 7.2 GB of RAM and 7.2 GB of virtual memory. Is this normal behavior? How can I adjust SQL Server to clean up unused memory?

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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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• C++ code which is slower than its C equivalent?

  - by user997112

  Are there any aspects to the C++ programming language where the code is known to be slower than the equivalent C language? Obviously this would be excluding the OO features like virtual functions and vtable features etc. I am wondering whether, when you are programming in a latency-critical area (and you aren't worried about OO features) whether you could stick with basic C++ or would C be better?

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• Scientific calculator app/site that saves calculations for Win 7?

  - by verve

  Are there any scientific calculator apps that aren't browser specific that's easy to use which displays whatever is inputted clearly and one that can be used by a keyboard only but can be used by only a mouse too? Also, I want one that saves the history of calculations and lets us paste it into a document at another time. Also, please don't recommend ones from sketchy-looking sites. Freeware or paidware. I prefer paidware if it's the only way to guarantee accurate calculations. Win 7 Pro.

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• How to test a site rigorously?

  - by Sarfraz

  Hello, I recently created a big portal site. It's time for putting it to test. How do you guys test a site rigorously? What are the ways and tools for that? Can we sort of mimic hundreds of virtual users visiting the site to see its load handling? The test should be for both security and speed Thanks in advance.

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• HP Pavilion dv3 volume control display driver on Windows 7

  - by Farinha

  I've recently bought an HP Pavilion dv3-2150ep and I'm having a hard time getting the volume control display to work as expected. The control is a back-lit touch-sensitive bar above the keyboard. Now the buttons to turn the volume up and down actually do it, but the lightning is not changing at all. The mute button does change color when toggled. I'm not sure if I'm missing any drivers here (I've installed all of those on the HP support page that seem to have something to do with sound and/or display) or if I have to activate this somewhere. Any ideas?

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• How to set the laptop screen brightness programatically?

  - by zls

  I'm currently migrating to openbox without gnome session. In unity i can use the vendor keys to set the screen brightness, but in openbox I'm on my own. /sys/class/backlight/acpi_video0/brightness works fine, the problem is that I need sudo to set the brightness and that wouldn't work with keyboard mappings. xbacklight -get/set doesn't do or output anything. I don't really want to use xrandr --brightness. Are there any other options or a way to fix the problems with xbacklight or acpi_video0 ?

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• Are there any Spreadsheet apps that are as easy and powerful to use as Vim?

  - by ovatsug25

  I'd like to use a spreadsheet that lets me move around cells like I do in Vim. As well, the more commands that are attributed to keyboard shortcuts, the better. Particularly stuff like making Text-to-Columns which is one of my more frequently used features in Excel. I don't mind learning the shortcuts if they allow me to just look at the spreadsheet page and forget about everything else. edit: The way I am thinking about the Spreadsheet right now is as if every cell is its own unique file. There should be a command where I choose to open that file and edit it right on the spot within the view of the spreadsheet. So I guess I want different modes like in vim which have commands and there should be one mode that is hooked up just to do operations or formatting which would be similar to command mode in Vim.

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• How to implement tail calls in a custom VM

  - by DeadMG

  How can I implement tail calls in a custom virtual machine? I know that I need to pop off the original function's local stack, then it's arguments, then push on the new arguments. But, if I pop off the function's local stack, how am I supposed to push on the new arguments? They've just been popped off the stack.

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• Want shortcut to OpenVPN GUI connect in Windows 7 (without going through the system tray)

  - by Leo Alekseyev

  I am running OpenVPN with OpenVPN GUI under Windows 7 x64. Currently, to connect I need to right-click the OpenVPN icon in the system tray and select "connect", which brings up the password prompt. What I want: some sort of a batch file or a shortcut that can be invoked to initiate OpenVPN connection. Motivation: I prefer running my system keyboard driven; I usually hide my taskbar and don't like needlessly fishing in the system tray. Currently, OpenVPN is the only program that forces me to interact with the taskbar. Surely there is an alternative approach, possibly invoking some command line trickery and/or autohotkey, but so far I haven't been able to find it.

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• Graceful way to exit a dm_job ? System.exit()?

  - by Ayrad

  If I want to properly exit a documentum java job (if params are invalid for example), should I use a system.exit() or is there another way to do it. As far as I know system.exit closes the virtual machine, does it have an effect on other jobs running?

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• Windows 2003 to log on no matter how it turned off

  - by Arya

  I have a windows server 2003, which I use Teamviewer to connect to. When there is a power failure, and the computer restarts, it will not load Teamviewer. It gets stuck on a screen which asks why the computer was turned off. There is no keyboard or mouse connected to the server and I need Teamviewer to open every time. I don't want the screen asking why it was turned off to show up ever. I turned off Shutdown Event Tracker by doing the following: Open gpedit.msc Computer Configuration Administrative Templates System click Display Shutdown Event Tracker and then selected the disable radio button. Is this enough to prevent that screen to show up again? or is there anything else I need to change?

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• writing to an ioport resulting in segfaults...

  - by Sniperchild

  I'm writing for an atmel at91sam9260 arm 9 cored single board computer [glomation gesbc9260] Using request_mem_region(0xFFFFFC00,0x100,"name"); //port range runs from fc00 to fcff that works fine and shows up in /proc/iomem then i try to write to the last bit of the port at fc20 with writel(0x1, 0xFFFFFC20); and i segfault...specifically "unable to handle kernel paging request at virtual address fffffc20. I'm of the mind that i'm not allocating the right memory space... any helpful insight would be great...

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• What is the character used to indent the Make file rule recipe?

  - by goldenmean

  Hi, I am using gnu make and in a Makefile I have, I see below rule. I want to add a similar rule with a recipe, but when I add a rule and its receipe on the next line by giving a tab or space for the recipe, I get make error. dummy : @echo $(OBJS) When i turned on the vim command :set list , i see: dummy :$ ^I@echo $(OBJS)$ What exactly are the characters before the recipe line(second line) which indent it from the start of line? How do I enter them using keyboard (without having to copy paste the exisitng rule and then modifying it? Where would I find information for various spaces/indents to be used in creating a Makefile from beginning, by hand(Not a automake/or other tool created makefile)? thanks, -AD.

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