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• Wifi interface changes name seemingly at random

  - by ray_voelker

  I'm currently having some issues getting a wireless interface to work continuously under an install of Ubuntu 12.04.1 LTS. Some of the issues I'm experiencing include Connection will drop out after some time after it has initially worked. Interface will be a different name after a reboot. For example, wlan0 will become wlan4 when using the ifconfig -a command. Ubuntu will take a long time to boot, looking for network adapters. The purpose of this build is to function as a web kiosk in a library. The computer is supposed to boot up into a web browser, and allow for browsing of the catalog. For some reason this interface does not appear to be working as it should. Are there any explanations for some of these problems I'm having, and perhaps some solutions? The wireless card appears as this after doing an lspci ... Ralink corp. RT2561/RT61 802.11g PCI In the /etc/network/interfaces file I have the following configuration for the interface. auto wlan0 iface wlan0 inet dhcp wireless-essid UDwireless wireless-mode Managed Thanks in advance for help on this.

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• How can I improve the battery life under 12.04 on my Inspiron 14z? [duplicate]

  - by cfogelberg

  This question already has an answer here: Tips to extend battery life for laptops and notebooks 24 answers How do I improve the battery life of my Inspiron 14z under Ubuntu 12.04? This laptop gets 4-5 hours of battery life using Windows (e.g. here). I've removed Windows, installed Ubuntu 12.04 and the initial battery life was only 2 hours. With some tweaks (described below) it's still only ~2.5 hours. For reference, the laptop is the latest model of the 14z: i5-3337U processor 32GB MSATA, 500GB HDD (5400rpm) AMD Radeon HD7570M graphics card I have put ext4 partitions on both the SSD and the HDD, and have mounted / to the SSD and /home to the HDD. I also put a 24gb linux swap partition at the start of the HDD, though I figure this won't be used all that much (the laptop has 8gb of RAM). After googling around and reading Ask Ubuntu and other sites extensively, I have done the following steps, and they have improved the battery life ~30 minutes (exact improvement not clear, but battery life is still nowhere near 4-5 hours). Installed Jupiter (and set Performance to "Power Saving") Installed laptop-mode-tools cat /proc/sys/vm/laptop_mode now outputs 5 (previously it output 0) But it's not clear that this will help: AskUbuntu question Turned down the brightness of my screen from full to 1/3 Other things I have heard about but have not tried for fear of frying the laptop or my linux install: Add "pcie_aspm=force" at the end of the line with "quiet splash" in /boot/grub/grub.cfg Enable ALPM, but it may already be enabled in 12.04? Enable i915 framebuffer compression Use a propietary driver for the graphics card? Turn off the graphics card? (what would happen if I relied on the internal Intel bridge?) Use TLP? Spin down the HDD more aggressively (howto, but I think laptop-mode-tools does this already) The only other thing I've noticed is that plastic just above the F5, F6 and F7 keys gets really hot. According to Jupiter my CPU temperature is only 69 celsius and the System Monitor shows CPU load at 7% so I don't think it's the CPU. Maybe it's the graphics card? Also, I've set up MongoDB and LAMP on the machine as well. When I run powertop MongoDB is high in the list, but I'm not sure if that's relevant to battery life because I'm not actually doing anything with MongoDB most of the time. Edit - Additional info as requested $ lspci -nnk | grep -iEA3 "(graphics|vga)" 00:02.0 VGA compatible controller [0300]: Intel Corporation Ivy Bridge Graphics Controller [8086:0166] (rev 09) Subsystem: Dell Device [1028:057f] Kernel driver in use: i915 Kernel modules: i915 -- 02:00.0 VGA compatible controller [0300]: Advanced Micro Devices [AMD] nee ATI Thames [Radeon 7500M/7600M Series] [1002:6841] Subsystem: Dell Device [1028:057f] Kernel driver in use: radeon Kernel modules: radeon

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• Kubuntu is not Ubuntu

  <b>Apachelogger's Log:</b> "This post is supposed to make it clear why Kubuntu is what it is. Writing this down is necessary because people constantly get the wrong picture."

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• USB webcam just works once and next time I've to reboot

  - by user30262

  I'm using Ubuntu 9.10, and a usb webcam that is shown as 'Bus 001 Device 005: ID 0ac8:3450 Z-Star Microelectronics Corp.' by lsusb. The problem is that on connecting the cam, it just works with the first program I start (skype, tokbox, messenger), and if I disconnect it or switch to another program, it stops to work and I have to restart my computer to make it work again. Has anyone else noticed this behaviour? Is there some good solution to reset the camera without rebooting to make it work again?

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• Oracle 12c: First (and best!) on Solaris

  - by mgerdts

  Oracle 12c is now available for download.  Notice that support for Solaris SPARC and x86-64 are among the operating systems supported on the first day of availability. New database features that relate to Solaris include: I/O outlier support.  This is made possible through the database's use of DTrace, and as such Solaris has a clear edge here. Oracle ACFS Replication and Tagging for Solaris Integration with Solaris resource pools As has been the case for some time, Oracle databases are supported in zones.

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• Java Program Compilaton on Windows [closed]

  - by Mc Elroy

  I am trying to compile my program on the command line on windows using the java command and it says: Error: could not find or load main class or addition class It is for a program for adding two integers. I don't understand how to resolve the problem since I defined the static main class in my source code here is it: //Filename:addition.java //Usage: this program adds two numbers and displays their sum. //Author: Nyah Check, Developer @ Ink Corp.. //Licence: No warranty following the GNU Public licence import java.util.Scanner; //this imports the scanner class. public class addition { public static void main(String[] args) { Scanner input = new Scanner(System.in);//this creates scanners instance to take input from the input. int input1, input2, sum; System.out.printf("\nEnter First Integer: "); input1 = input.nextInt(); System.out.printf("\nEnter Second Integer: "); input2 = input.nextInt(); sum = input1 + input2; System.out.printf("\nThe Sum is: %d", sum); } }//This ends the class definition

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• problem in connecting Reliance booadband +

  - by Athira R

  I tried connceting reliance broadband in ubuntu. then an autorun prompt will come. when i click install another pop up coming saying autorun file not found. And when i checked in Internet connection to add connection. Reliance broadband option iteself is not there as connected device. This is Athira. I could not find any add comment option on my main question. So i created a new account and adding as new answer to ur question. athira@athira-laptop:~$ sudo lsusb Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 005 Device 004: ID 12d1:1505 Huawei Technologies Co., Ltd. Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 004 Device 002: ID 08ff:1600 AuthenTec, Inc. AES1600 Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 003 Device 002: ID 0421:0508 Nokia Mobile Phones E65 (PC Suite mode) Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 002 Device 002: ID 064e:a103 Suyin Corp. Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub athira@athira-laptop:~$ i got this after running it in ubuntu 10.04

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• How to draw a spotlight in 3D

  - by RecursiveCall

  To be clear, I am not talking about the light result (the lit area) but the spotlight itself, like this The two common suggestions that I tried are 2D image and a 3D cone. The problem with the pre-regenerated 2D image is that it always look 2D and flat no matter how it is rotated in world space. The cone on the other hand is next to impossible to control when it comes to fade distance, it doesn't look soft (smooth) and it is expensive to compute.

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• Stairway to Database Design STEP 2: Domains, Constraints and Defaults

  A clear understanding of SQL Data Types and domains is a fundamental requirement for the Database Developer, but it is not elementary. If you select the most appropriate data type, it can sidestep a variety of errors. Furthermore, if you then define the data domains as exactly as possible via constraints, you can catch a variety of those problems that would otherwise bedevil the work of the application programmer.

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• T-SQL User-Defined Functions: Ten Questions You Were Too Shy To Ask

  SQL Server User-Defined Functions are good to use in most circumstances, but there just a few questions that rarely get asked on the forums. It's a shame, because the answers to them tend to clear up some ingrained misconceptions about functions that can lead to problems, particularly with locking and performance Can 41,000 DBAs really be wrong? Join 41,000 other DBAs who are following the new series from the DBA Team: the 5 Worst Days in a DBA’s Life. Part 3, As Corrupt As It Gets, is out now – read it here.

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• SMTP server to deliver ALL mail to user@localhost

  - by cam8001

  I'd like to configure an SMTP MTA to accept all mail addressed to any domain and deliver it to my local user account. It would be very useful for debugging mail sent in some code I'm working on. I'll be running the server locally - no outside world interaction required. To be clear: [email protected] - delivered to - cam8001@localhost [email protected] - delivered to - cam8001@localhost [email protected] - delivered to - cam8001@localhost

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• Dual Monitor in Ubuntu 11.10 is resetting the theme

  - by Mengu

  i'm experiencing a strange problem with dual monitors. when i set the dual monitor via "nvidia settings" and save the setting to xorg.conf, the default unity theme and icons are turning back to gtk default. i also get an error telling me "could not apply the stored configuration for monitors" here is my xorg.conf: # nvidia-settings: X configuration file generated by nvidia-settings # nvidia-settings: version 280.13 (buildd@yellow) Fri Aug 5 12:31:28 UTC 2011 Section "ServerLayout" Identifier "Layout0" Screen 0 "Screen0" 0 0 InputDevice "Keyboard0" "CoreKeyboard" InputDevice "Mouse0" "CorePointer" Option "Xinerama" "0" EndSection Section "Files" EndSection Section "InputDevice" # generated from default Identifier "Mouse0" Driver "mouse" Option "Protocol" "auto" Option "Device" "/dev/psaux" Option "Emulate3Buttons" "no" Option "ZAxisMapping" "4 5" EndSection Section "InputDevice" # generated from default Identifier "Keyboard0" Driver "kbd" EndSection Section "Monitor" # HorizSync source: edid, VertRefresh source: edid Identifier "Monitor0" VendorName "Unknown" ModelName "Chi Mei Optoelectronics corp." HorizSync 30.0 - 75.0 VertRefresh 60.0 Option "DPMS" EndSection Section "Device" Identifier "Device0" Driver "nvidia" VendorName "NVIDIA Corporation" BoardName "GeForce GT 540M" EndSection Section "Screen" Identifier "Screen0" Device "Device0" Monitor "Monitor0" DefaultDepth 24 Option "TwinView" "1" Option "TwinViewXineramaInfoOrder" "DFP-0" Option "metamodes" "DFP: nvidia-auto-select +0+0, CRT: 1680x1050 +1920+0" SubSection "Display" Depth 24 EndSubSection EndSection here is an example of what i'm talking about: http://i.stack.imgur.com/vrlW1.png how can i fix this? thanks in advance.

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• desktop-name ("Ubuntu Desktop")

  - by user109581

  i see someone asked how to change in unity top left corner label (ubuntu desktop) there is an answer but it is no very clear, can someone explain it with more details, i am pasting the answer that was posted but i need more directions, thanks You would likely need to build the unity or unity-2d source. Currently in unity-5.12 would be found in /plugins/unityshell/src/PanelMenuView.cpp, line 78 _desktop_name(_("Ubuntu Desktop")) In unity-2d, unity-2d 5.12, /panel/applets/appname/appnameapplet.cpp line 369 d-m_label-setText(u2dTr("Ubuntu Desktop"));

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• "net use /delete" question

  - by tinmaru

  I want to delete a network connection. When I type net use I get this: Microsoft Windows XP [version 5.1.2600] (C) Copyright 1985-2001 Microsoft Corp. C:\Documents and Settings\totonet use État Local Distant Réseau OK M: \192.168.5.138\share Réseau Microsoft Windows OK R: \192.168.2.18\tools Réseau Microsoft Windows OK \192.168.2.43\data Réseau Microsoft Windows La commande s'est terminée correctement. The syntax for deleting a network map is : net use /delete X: if I want to delete a specific connection net use /delete * * if I want to delete all connections. How can I delete the \192.168.2.43\data connection which, as you can see, is not link to any logical letter?

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• What is the relationship between the command line, the OS and the microprocessor? [closed]

  - by ssbrewster

  I'm not totally clear on how using the command line differs from working through the OS' interface using an editor for example. Obviously the UI is different but I want to understand how the command line interacts with the kernel and microprocessor, and how this compares to how kernel interfaces with the OS' GUI. I know I'm missing several layers of abstraction but would be grateful for someone to explain this.

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• How do I change the software center icon in the launcher?

  - by Andreas

  I'm not a big fan of the Software Center icon (apparently I'm not the only one: http://www.omgubuntu.co.uk/2011/09/software-centre-icon-proposal). Is there a way change it? The answers to this related question doesn't make it clear whether there is: How to change the Dash icon in the Unity Launcher? As far as I can see the Software Center icon isn't in nautilus /usr/share/unity/5/ so where could it be?

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• Impossible do find motherboard drivers to and old Dell computer

  - by Masziej

  Hello, I recently formatet and reinstalled XP on my girlfriends computer. Ive had this computer since 2001, never formatet it, until now =) Anyway the problem is that i cant find any drivers for the motherboard (integrated audio, video and ethernet). as i said its an old ass Dell. Cant remember if I got any cds along with it. Even if i did theyre gone a long time ago. So, I ran CPUZ and got this: --Motherboard-- Dell Computer Corp. 0K8980 And started googling. But didnt find any drivers. Still cant So im asking for a little help here. I really need to get the computer going before she wants a new one :D And yes i have looked on dells homesite, but they dont seem to wanna host drivers for their old stuff

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• Relationship between "Task Parallel Library" and "Task-based Asynchronous Pattern"?

  - by Sid

  In the context of C#, .NET 4/4.5 used for an application running on a web-server, what is the relationship between "Task Parallel Library" and "Task-based Asynchronous Pattern"? I understand one is a library and the other is a pattern. But to dig deeper, is it like "The library is used by the pattern to enforce good practices". I'm also not clear if both are supported in .NET 4.0 (with awake and async keywords) Edit: Seems that awake and async are only in .NET 4.5 ...

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• Does anyone work 10 hours shifts as a developer?

  - by dah

  I would like to switch from a 5 day week to a 4 day, but maintain a 40 hour working week. Would the 10 hour days affect your ability to be productive? I hate our public transit system so if I could reduce my transportation by 20% I would be glad. If other developers who work 10 hours shifts could be clear as the their experiences with it that would help me. I think my boss is flexible enough that he would be cool with it.

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• Git autocomplete is asking for a password, not sure why

  - by Soldier.moth

  I'm running into an issue with autocomplete using git... I am using ubuntu 12.10 and when I perform the following keystrokes g i t Space Bar Tab I am presented with the error Pseudo-terminal will not be allocated because stdin is not a terminal. and prompted for a password. I am not clear how to go about troubleshooting this error, I have tried uninstalling and reinstalling git to no avail. Screenshot of terminal with error:

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• Stairway to MDX - Level 10: “Relative” Member Functions: .CurrentMember, .PrevMember, and .NextMember

  SSAS Maestro, SQL Server MVP and Business Intelligence Architect Bill Pearson introduces three “major players” within the MDX “relative” functions. These basic, but highly employed, functions include the .CurrentMember, .PrevMember and .NextMember functions. Check SQL Server performance at a glanceWe consulted 1000 SQL Server professionals to make SQL Monitor’s UI as clear as possible. Start monitoring with a free trial.

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• Mobile Commerce Advantages for Retailers Emerging

  Using mobile devices to shop is starting to catch on but has some hurdles to clear before it gains broad acceptance with U.S. consumers, according to a new report.

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• Make your TSQL easier to read during a presentation

  - by fatherjack

  SQL Server Management Studio 2012 has some neat settings that you can use to help your presentations at a SQL event better for the attendees if you are willing to spend a few minutes making some settings changes. Historically, I have been reluctant to make changes to my SSMS settings as it is such a tedious process and it's not 100% clear that what you think you are changing is actually what gets changed. With SSMS 2012 this has become a lot easier and a...(read more)

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• Landscape-like tool to distribute security upgrades to OS?

  - by Ichikata

  i'm looking for an alternative to Landscape, Spacewalk (for RHEL), or CTL to perform a specific job. I need to control and apply OS upgrades on ubuntu systems, for 100+ servers, and so far i wasn't that lucky. I've tried Approx tool (similar to apt-proxy), but it just caches the content, and what i really need to do is set update milestones, apply the upgrades to QA servers, validate, then Stage environment, and so on to Production. I hope I was clear enough, any answer will be much appreciated.

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• Trojaned App Demonstrates Need for Better Practices, Not More FUD

  <b>IT World: </b>"The Unreal team handled it pretty well, in my opinion. They embraced the suck and made a clear announcement free of blame or denial--an announcement that also pointed out how to confirm the trojaned version and how to replace the trojaned version with the clean version."

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