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• How to operating systems… run… without having an OS to run in?

  - by Plazmotech Binary

  I'm really curious right now. I'm a Python programmer, and this question just boggled me: You write an OS. How do you run it? It has to be run somehow, and that way is within another OS? How can an application run without being in an OS? How do you tell the computer to run, say, C, and execute these commands to the screen, if it doesn't have an OS to run in? Does it have to do with a UNIX kernel? If so, what is a unix kernel, or a kernel in general? I'm sure OSes are more complicated than that, but how does it work? It would be really brilliant to know this! Thanks.

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• Blocked Google Engage Account [closed]

  - by fasheikh

  I have a Google Engage account, which keeps showing me: Your Google Account has changed The email address on your Google Account has changed. The account that controls your Engage membership now has an email address of: fasheikh15%[email protected]. How can I fix this? Go to the sign-in page: Sign In Log in with your normal password but instead use the following email address: myemailadd%[email protected] You will then be given the option to switch your Engage member profile to: [email protected]. If you wish to do this then just follow the on-screen instructions when you get to the Switch Accounts page. I've been contacting them since April to no avail so I thought I'd see if anyone here has any fixes?

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• Live USB does not work

  - by MARUF SARKER

  I've made live USB using these "Universal-USB-Installer-1.9.1.9", "unetbootin-windows-581", "YUMI-0.0.8.0" & "LinuxLive USB Creator 2.8.18" in "FAT32" format, but unfortunately I could not boot using the pen-drive. My BIOS supports boot from USB drive. When I am booting from the live usb, it just show black screen with a blinking "_", but nothing happens after that( I have waited more than 10 minutes, but nothing happens). So, can anyone please help me on this? [Additional Info.: I've made Bootable USB using PowerISO and that booted, but it was not possible to access the USB normally afterwards,because PowerISO formatted the USB Drive as RAW(or anything I don't know) and it became 8GB to 700MB, afterwards I had to format it using MiniTool Partition manager.]

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• Regulating brightness using Fn-keys

  - by richter12

  I have a laptop with the newest Ubuntu-version (12.04). I want to use the FN-Keys to adjust the brightness of my screen, but it doesnt work. Normally it should be FN+left arrow/right arrow. However adjusting the volume with FN+ up arrow/down arrow works fine. I already searched for a few soulutions, for example tried to replace in the Grub-File GRUB_CMDLINE_LINUX_DEFAULT="quiet splash" with GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_backlight=vendor" or GRUB_CMDLINE_LINUX_DEFAULT="quiet splash cpi_osi=Linux" but it all doesnt work for my laptop. How can I fix this problem? Thank you very much! Richter

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• Dual screens with one workspace on each?

  - by user2413

  Hi all, I have a dual screen, compiz-fusion and i don't have a NVDIA/ATI graphic card and i use ubuntu 10.10. i currently use the two monitors: the desktop is stretched across monitors and i can drag an application across monitors. My question follows: i would like to use the left monitor only to display workspace1 and the right monitor to display workspace2. Is this possible ? If yes how (I've found mention of dualXscreen on this board, but i can't find it in the compizConfig menus). Best,

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• Linux (Ubuntu 12.10) starts up, but the main menu on the left side, and the pictograms at the upper right corner, do not show up

  - by user114220

  Linux OS (Ubuntu 12.10) starts up (user login, my personal picture of a beautiful Norwegian fjord-landscape fills the background), but the main menu on the left side, and the pictograms (battery state etc.) at the upper right corner of the screen, do not show up. This occurred yesterday quite suddenly after six or seven weeks working with Ubuntu 12.10. Then I started in recovery mode and performed a file system check (fsck) but that takes hours and finally a message ¨Sorry Ubuntu has experienced an internal error etc¨ appeared. How can I determine what has gone wrong and eventually, how can I solve it? So that I can work again using Ubuntu 12.10 (on a dual-boot system, Intel i7, ASUS P8P67 motherboard).

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• How do you set the movement speed of a sprite?

  - by rphello101

  I'm using Slick 2D/Java to play around with graphics. Getting an image to move is easy: Input input = gc.getInput(); if(input.isKeyDown(sprite.up)){ sprite.y--; }else if (input.isKeyDown(sprite.down)){ sprite.y++; }else if (input.isKeyDown(sprite.left)){ sprite.x--; }else if (input.isKeyDown(sprite.right)){ sprite.x++; } However, this is called on every update, so if you hold up, the sprite moves to the edge of the screen in a few hundred milliseconds. Since coordinates are integers, I can't add less than 1 to slow the sprite down. I'm assuming I must have to implement a timer of some sort or something. Any advice?

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• My system is always disk-bound (the disk light is always on). Why is this?

  - by Scoobie

  I have been given a laptop by the good folks at my company on which to do my work (Java development). I usually use eclipse as my primary development platform. The laptop is a Dell D830 and runs Windows 7 - 32 bit. Although the processor supports a 64 bit instruction-set, licensing limits me to running the 32 bit OS. The HDD is a WD1600BEVT (Western Digital). I have noticed that my disk is always very slow. Windows start up is usually pretty quick, however as soon as I log on, my disk light stays on and usually, the laptop takes about 4 minutes (after logging in -- immediately upon getting the prompt to press Ctrl + Alt + Del to log in) before it's usable. Questions: Is this expected behavior? What can I do to examine the disk and determine the cause of the problem? What can I do to improve my disk's performance? Any optimizations you may be able to suggest? Other Questions: Some have suggested running Process Monitor (from sysinternals), but how would i get the log since start up? Instead of trying to fix this myself, should I simply push this onto the system administrator? Thanks all.

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• Good source for interview-style coding problems for entry/intermediate developers?

  - by soster

  I have taught myself to code over the past few years and do not have a computer science degree. As a result, I lack experience from many things, such as the basic homework/test questions many CS graduates take for granted. I recently had a tech screen interview where I fumbled and struggled to finish a (relatively) common question, I believe due to this inexperience. My question to all of you is this: do you know a good source for a bunch of these problems that includes answers, for an entry/intermediate developer who is trying to gain coding problem solving experience? The ones I've been able to find on the internet are for coding teams, so they're a bit too complicated for me. Thanks so much in advance.

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• Resource Managers - Are they any good?

  - by The Communist Duck

  Hey. I've seen many a time in source code, things like this [well, this is more of a pseudo C++ idea of mine] type defshared_ptr ResourcePtr;// for ease ResourcePtr sound1 = resourceManager.Get("boom.ogg"); sound1-Play(); ResourcePtr sprite = resourceManager.Get("sprite.png"); I was just wondering how useful a class like this was, something that: Loaded media files Stored them in memory Did this at the start of a level - loading screen. Cleaned up Rather than having a system of: Resources are held by entities only, or loose. Responsible for own load into memory. The first is a 'manager' as such; something I feel indicates it's wrong to use. However, it allows for something like a vector of resource names to be passed, rather than having to scramble around finding everything that needs to be loaded.

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• 12.04 gnome shell broken after updates

  - by nat

  I'm running Ubuntu 12.04, and using gnome shell. I've had my machine running for the last few days, and I've been installing updates as the update manager bugs me. I just rebooted, and now gnome won't start. I can use gnome classic and unity, but gnome 3 isn't working at all. When I log in, the screen is black for maybe 20 seconds, but the cursor shows. Then, my wallpaper, but nothing else shows up. I can get a terminal with ctrl+alt+t, and I tried to run gnome-shell, but it segfaulted.

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• Shutdown after waking up

  - by user71468

  This issue appeard after installing last week's updates from Update Manager. When waking up after suspend, the OS starts loading and it halts unexpectedly, before the load is complete. I don't get to see login screen. This worked well last week, before installing updates. Then I need to remove laptop's battery, wait a while, then plug it and start again (otherwise power button won't work). Is anybody else experiencing this behavior? I have an HP DV7 with an intel core i7.

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• How can I make these Google Analytics numbers add up? (Frequency & Recency)

  - by Joe

  Here's a screen shot from Google Analytics. It's my last months traffic, and this is the 'Frequency & Recency' tab. So I believe that if I add up all the numbers under 'visits' I get 11,432, which is right, and if I add up all the numbers under 'pageviews' I get 14,785 and that's right as well. But, let's take the last line - the last line appears to say that 71 people, visited more than 51 times each, and they viewed a total of 243 pages between them - that doesn't seam to make any sense - did they view 9% of a page each time? So that's clearly wrong - what's the error in my calculation?

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• Windows 7 clean install becomes corrupt after reboot (repeated many fresh installs)

  - by pjotr_dolphin

  My laptop keeps crashing on boot after clean Windows 7 install. Ok, here is the story, and some fact. Computer: Samsung NP900X3C-A04HK (256GB SSD, 8GB RAM) OS to install: Windows 7 Ultimate SP1 (not from Samsung, own fresh Win) I purchased this laptop about a year ago, never booted it into the Windows Home that was installed on it, installed directly Ubuntu on the machine. Full disc encryption was the selected install, so of course it wiped the complete disc (including Samsung Recovery Partition). After some time, I felt like going back to Windows, as Windows 7 is actually quite nice. So I went to buy a fresh Windows 7Ultimate with SP1. Now to the tricky part. Windows installs perfectly, and after installing all Windows updates, drivers from Samsung, software I need, it is time for shutting it down and go to bed. Starting it up again, and it is not booting, these are the type of errors I have gotten so far (fresh installed it more then a dozen times now, and tried different suggestions from threads on the net). Windows failed to start... Status: 0xc000000f Info: The boot selection failed because a required device is inaccessible. File: /boot/bcd Status: 0xc000000f Info: an error occurred while attempting to read the boot configuration data. And some other errors, not all the same. Not memory of this. I have run different disc checks, and all says my SSD is in perfect shape. Note: Soft reboots from Windows menu works, never gets corrupted. But if I Shutdown and then start it up again, this is when it happens. Can someone help me not get back to Ubunut? What can be the cause, and how can it be fixed so I do not get there problems again?

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• I have ubuntu 11.10 64bit, can't shutdown or restart my pc?

  - by digitalcrow

  I have ubuntu 11.10 64bit, everything worked fine but after i uninstalled the airtime dj app i can't restart or shutdown my pc !! The only way to reach at the screen showing that system is going to shutdown is via terminal but it stucks and never shuts down ! I can't even restart it ! I can suspend my pc fine but can't shutdown or restart it. Need to keep the power button pressed for a long time to shut it down ! Do i have to look for a shutdown script and find out what is happening ?? I'm very unhappy with this it gives to my nerves.

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• Neither suspend nor hibernate in 12.10 lubuntu - is there a workaround by scripts?

  - by J.-S. Farinet

  I've neither suspend to ram nor to disk in 12.10 lubuntu (i suspect there might be a kernel issue but i'm only a simple user). Also, the xfce powermanagement which comes with lubuntu by default does not have any effect. Even it doesn't lock the screen when i set this in the preferences: What do when close the lid. So, on a portable that's annoying a lot. Is there some way to workaround by scripts in 'etc/pm/*.d'? TIA for any idea.

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• How to keep a window from overlapping into another workspace?

  - by user1477

  It's annoying to me how if a window is even a couple pixels off the right edge of my screen, when I switch to that right workspace, the system thinks that the window is there. The unity launcher bar gets hidden because of it and switching to that window keeps you on the current workspace where you can't even see the window cause it's only a couple pixels. KDE seems to do this much better where when you switch to another workspace, the window just isn't there. But well I don't want KDE. Any way of getting that same behavior without the switch?

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• Executing a git command using remote powershell results in a NativeCommmandError

  - by user204777

  I am getting an error while executing a remote PowerShell script. From my local machine I am running a PowerShell script that uses Invoke-Command to cd into a directory on a remote Amazon Windows Server instance, and a subsequent Invoke-Command to execute script that lives on that server instance. The script on the server is trying to git clone a repository from GitHub. I can successfully do things in the server script like "ls" or even "git --version". However git clone, git pull, etc. result in the following error: Cloning into 'MyRepo'... + CategoryInfo : NotSpecified: (Cloning into 'MyRepo'...:String) [], RemoteException + FullyQualifiedErrorId : NativeCommandError This is my first time using PowerShell or a Windows Server. Can anyone provide some direction on this problem. The client script: $s = new-pssession -computername $server -credential $user invoke-command -session $s -scriptblock { cd C:\Repos; ls } invoke-command -session $s -scriptblock { param ($repo, $branch) & '.\clone.ps1' -repository $repo -branch $branch} -ArgumentList $repository, $branch exit-pssession The server script: param([string]$repository = "repository", [string]$branch = "branch") git --version start-process -FilePath git -ArgumentList ("clone", "-b $branch https://github.com/MyGithub/$repository.git") -Wait I've changed the server script to use start process and it is no longer throwing the exception. It creates the new repository directory and the .git directory but doesn't write any of the files from the github repository. This smells like a permissions issue. Once again invoking the script manually (remote desktop into the amazon box and execute it from powershell) works like a charm.

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• Shell replacement for kiosk environment with desktop icons

  - by tuesprem

  I have to deploy around 80 touch-screen terminals for my company. We're going to run several Windows applications on those terminals and they'll be operated by touch input only. I basically want those machines to run in a kiosk mode, so employees won't be able to launch any programs than the ones they're supposed to (also, this will hide the task bar/start menu, which will give it a much nicer, corporate look). There's usually one app that should automatically launch on startup and other apps that can be launched from the desktop. I've tried to accomplish this (under Windows 7 Pro) with a custom shell replacement. This removes the task bar/start menu like I described earlier. I used an AutoHotKey script for this, because it's easy to, for instance, define hotkeys so admins will still be able to launch stuff like Windows Explorer (okay, I know I could just launch it from the task manager [Ctrl+Shift+Esc] but I'm considering locking that as well). So far so good. Some problems though: No desktop icons. Needed to launch apps from the desktop. No wallpaper. Required for CI. Is there any way around this? I wouldn't mind using another shell replacement, as long as it's reasonably lightweight. I'd love to get the wallpaper and desktop icons to show with something like AutoHotKey though. Thanks!

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• Settings messed up after crash

  - by ChocoDeveloper

  After an abrupt shutdown many settings were messed up: #1 Firefox was a mess. Bookmarks were gone, and I couldn't even add new ones. I had to reset firefox from safe mode and install all my addons and configure everything. This was a pain but is now solved. #2 The background in the login screen shows the one I chose with Ubuntu Tweak for a second, and then it puts back the default one. I tried changing it again with Ubuntu Tweak but it's still happening. #3 All my shortcuts in the sidebar were replaced by the default ones. I re-added them manually, also a pain. So how can I solve 2? And in case this happens again, is there a way to fix everything easy and fast?

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• 13.10 suspend kills wifi

  - by ser

  i tried to post to this thread Hardware wireless switch has no effect after suspend and 13.10 upgrade for if i understand their question i am having the same problem but the answer option won't work for me and maybe i am not supposed to post there anyway, i dunno lol...ack when i come out of suspend, the wireless is disconnected with the only way to get it to reinitialize/be recognized is to do a full restart. at first i thought it was my gnome shell (for lock screen disappeared there with 13.10) but when i switched to the default ubuntu it's still doing it and it's kinda driving me nuts for i have to reopen all my files and browsers/tabs/windows everytime. i'm only a geekling so i don't know how to show the terminal stuff the above asker shows, but it sounds like the same issue and it only started with 13.10 upgrade a few days ago. any help would be much appreciated!!! thanks so much ser

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• How to change color of the frame of a maximizing window

  - by SteliosSk

  Though I have read and tried some advises regarding the change of colors in a theme, I found no answer regarding my question, which is: When I drag a window to the left (or right or up) side of the screen an orange frame shows up, indicating the area that the window will occupy. This frame is in orange. Can you please inform me how can I change this color to blueish, to match my theme? At this point, I would like to inform you that Zorin OS has this blueish frame instead of orange, but I do not know where this color comes from.

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• My ubuntu 11.10 gets weird lately

  - by The questioner

  I have quite a lot problems lately(about 2 weeks) running Ubuntu 11.10. First, flash playback in chrome hangs and lags all the time. While in Firefox is better, but still lags. Playing video files in the preinstalled Movie Player lags too. Second, I've turned automatic on and in some occasions, after I switched the computer on and successfully loaded the desktop, however, in just a minute or so, the screen just got black out and directed me back to the login page. I thinks there are bugs, please tell me how to correct those. Sysinfo: CPU: i5-2400 MB: GA H61M D2P B3 (no video card) Drive: Intel 320 40GB Thanks. p.s. should I upgrade to 12.04??

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• Drawing line from sprite with a touch

  - by Kaizer

  I am working with cocos2d for the iPhone and I have a question about how to implement the following. I have a circle shaped sprite on my layer. When I touch the sprite and move my finger a line must be drawn from the sprite to where my finger is. When I move my finger on the screen the line must follow (straight line). When I release my finger the line should disappear. In a good looking way I should be able to restyle the line into an arrow. Can anyone move me in the right direction for this ? Kind regards

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• Desktop in Kubuntu lacks bars and quite everything after trying to apply Plymouth fix for proprietary drivers

  - by Michcioperz

  I'm running Kubuntu 13.10, my computer's graphics card is Nvidia GT 520. I tried to fix that Plymouth's problem with proprietary graphics driver using an old script I found on the internet (it was coded for Natty, now that I think about it I shouldn't have done it). I ran that script and rebooted my computer. First incorrect behaviour I noticed was that Plymouth only displayed its text splash only on 1/4th of the screen, though when I pressed Esc key the logs were displaying correctly. Main problem appeared when I logged in. All my desktop's windows lack menu bar, can't be closed with Alt-F4, and they don't appear on the task bar. I tried fixing it by reinstalling GRUB a few times, purging /etc/grub.d and /boot/grub, but only the text splash issue was fixed. How can I fix that?

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