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• Intermittent connection issues with atheros ar9285

  - by MrStatic

  I have an asus K50IJ which has an atheros ar9285 wifi chip. It has decided to start to randomly drop internet. Although the card doesn't seem to notice it has. It will show full signal instead of say 3 bars. I tried to look at the atheros site for the latest driver but they don't even offer driver downloads. I then checked the asus site and it doesn't even list that card in the downloads for this laptop. I run Windows 7 64bit. It will drop either every minute or once a day while I am doing intensive bandwidth usage and when I am just idling.

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• Reimage PC: Myth or Fact to speeding up a slow PC?

  - by sunpech

  I have a 4-5 year old PC running Windows XP for software development at work. It struggles to run all development tools I need at the same time. Management feels I need to reimage my computer to "speed it up". The last time it was imaged was about 3 years ago. What resources books, websites, blogs, articles, etc are out there that supports/debunks this well known belief that reimaging an old PC running Windows XP will make it faster once again? A resource I remember reading is from Lifehacker.com: Windows Maintenance Tips: The Good, Bad And Useless

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• Mini-ITX board for AM3 Athlon X4 600e processor.

  - by Kamil Zadora

  Hello, I am planning to build a PC to control a robotic platform that I am building (about 50% complete). I need more power than ATOM platform could bring, as the robot will need to do on the fly image processing to work as intended. I was considering using Athlon X4 600e as it is rated 45W Maximum output. Probably underclocked it would go lower than 30-35W. I do not I'am at very long battery life, but the 17Ah, 12V battery should keep it running for few hours. My problem is: motherboard. I am space limited so I am looking for a nice mini-itx AM3 motherboard to match the processor. It is hard to find many tests about power usage of the motherboards itself (for example, when using the same processor on different motherboards, test are usualy done in the opposite matter). Could you provide any motherboard examples or suggest what chipset to look for? Thank you in advance.

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• Reduce the I/O priority of Windows Backup (Windows Server 2008 R2)

  - by HelloSam

  I have a PostgreSQL running on Windows Server 2008 R2 x64 box. And I have scheduled a backup everyday from the RAID 1 DB disk to a dedicated standalone disk. They are SAS 15k on Dell PERC 6i. I am using the built-in Windows Server Backup for purpose. The problem is, whenever the backup process is kicked in, the database performance is hogged. I would say almost a 10x of performance reduction. From the resource monitor, the disk queue is in the double digit range when backing up, and less than 1 during the day. The disk activity is like ~30-50MB/s during backup, so I guess the hardware is acting normally, though wbengine.exe takes up most of the portions. I think reduce the IO priority of the backup process would be an answer, but I couldn't find a way to. Tuning process CPU priority does not seems to help.

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• 1080p playback on external monitor

  - by xibalban

  My system (netbook) specs: 1.6 GHz dual core atom N2600 2 GB DDR3 RAM Integrated GMA3600 GPU Win 7 Professional 32 Bit Daum Pot Player V-1.5 The issue: I downloaded a 1.33 GB sized 1920 x 1080 HD documentary (file extension: mp4) and it plays without a hitch using pot player. However, when I connected an external display (an LED Full HD 24" monitor) using D-Sub, the video plays fine but the player controls become very unresponsive. For instance, it takes about 40 seconds to exit full screen while playing. I tried: Installed/updated all the latest monitor drivers Updated the VGA drivers for GMA3600 No other programs ran while the video played, with most unwanted services and background processes disabled/killed. CPU usage goes only up to 49% when the video plays Question: What may I do in order to improve the player response/video playback experience? Do I need to play with (or change) Pot Player's default video decoders, etc?

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• Upgrading NAS hard drives

  - by Mihai Damian

  I was thinking of buying a NAS for home-usage. I've never used a NAS or had HDDs set up in Raids. Before I commit myself to moving all my data to a NAS I need to find out how difficult it is to upgrade and replace the NAS' hard drives. Suppose I set up a Raid 1 NAS with two 1TB hdds. At some point in the future I will use up all the space and will have to install two new 2TB hdds. Now I'll need to migrate the data from the old disks to the new ones. Will I have to hook up one of the old disks in a computer and copy all the data back in the NAS? Or can the migration be done using only the NAS? I realize the answer to the question might depend on the NAS model. Being a simple for-home solution I was thinking of getting something along the lines of D-link's 323.

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• Problem adding public key for apt

  - by highBandWidth

  I was trying to get the official mongodb for Ubuntu, following the instructions at http://www.mongodb.org/display/DOCS/Ubuntu+and+Debian+packages After adding the deb http://downloads-distro.mongodb.org/repo/ubuntu-upstart dist 10gen line in my sources, I need to add the pgp key since synaptic says W: GPG error: http://downloads-distro.mongodb.org dist Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 9ECBEC467F0CEB10 Again following instructions, I did sudo apt-key adv --keyserver keyserver.ubuntu.com --recv 7F0CEB10 this says Executing: gpg --ignore-time-conflict --no-options --no-default-keyring --secret-keyring /etc/apt/secring.gpg --trustdb-name /etc/apt/trustdb.gpg --keyring /etc/apt/trusted.gpg --primary-keyring /etc/apt/trusted.gpg --keyserver keyserver.ubuntu.com --recv 7F0CEB10 gpg: requesting key 7F0CEB10 from hkp server keyserver.ubuntu.com ?: keyserver.ubuntu.com: Connection refused gpgkeys: HTTP fetch error 7: couldn't connect: Connection refused gpg: no valid OpenPGP data found. gpg: Total number processed: 0 Interestingly, I also get $ apt-key list gpg: fatal: /home/myname/.gnupg: directory does not exist! secmem usage: 0/0 bytes in 0/0 blocks of pool 0/32768 How can I get apt to use this source?

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• Multiple domains, Exchange 2010, mailbox access via OWA

  - by Rob

  We currently run two separate domains where our new implementation of exchange 2010 is currently on a separate domain the users. My problem is: [email protected] cant access his mailbox at joe@domainb via OWA even though full access and sendas has been granted on domainb's mailbox to domaina's account. I keep receiving the error: Access is denied. The Active Directory resource couldn't be accessed. This may be because the Active Directory object doesn't exist or the object has become corrupted, or because you don't have the correct permissions. anyone able to help please? Take care

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• Why did windows change the elevation requirements of my AutoHotKey script, and how can I prevent such in the future?

  - by monsto

  I was working on an AutoHotKey (AHK) script to create prefab mouse movements for a very simple model viewer. I worked on it for a good hour. I zipped the script, posted it to a forum, and thought "oh hey, I should add bla bla bla to the script". When I returned to the program, the AHK script would not work. I could see the mouse movements working in other programs (notepad, chrome, etc), but not where I had been working the previous hour. After several hours of throwing darts at the troubleshooting wall, I discovered that the fix was to set the AHK.exe to Run as Administrator. The question here are multiple Why did Windows 7, in all it's wisdom, suddenly decide that elevation was necessary in the middle of usage? Can these permission requirements somehow be reverted by, say, removing a key from the registry or something? How can this kind of Windows behaviour be avoided in the future?

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• Western Digital My Book World drops off network

  - by Macha

  Most of my storage in my house relies on a WD My Book World Edition 500GB network drive. I threw out the vendor crapware they give you to access it (a trial version of Mionet) after it starting nagging me to upgrade, and set it up as a standard network drive using Window's Map Network Drive. However, since then, it has been dropping off the network after 30 minutes of non-usage. The only way to get it back on is to switch it off and on again at the plug socket. Does anyone know what is causing this, and hopefully how to fix it? EDIT: it's the original "blue rings" version with the latest firmware.

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• How can I monitor network traffic in an all Mac home network?

  - by raiglstorfer

  I have an all Mac network consisting of an Airport Extreme, 1 MacPro, 1 Mac Mini, 2 MackBook Pros, 2 iPads, and 2 iPhones. The Mac Pro is connected directly to the Airport Extreme via Cat5 and the rest is all running via Wireless. Lately I've been getting prompted by Google to enter Capchas frequently. The message states that I might have software running on my network I'm not aware of. My wireless router is password protected using WPA2 Personal and I frequently change my password so I don't think someone is using the network from outside (but I've no way to confirm this). I'm looking for a relatively cheap (preferably open source) solution that would enable me to monitor and profile the network usage by machine and port. Can someone recommend a solution?

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• Apparent leak in Mozilla Firefox

  - by LeopardSkinPillBoxHat

  I use Mozilla Firefox 3.6 all day, opening and closing tabs quite regularly. I am noticing over time that the firefox.exe process size keeps growing and growing over time. Initially I put this down to memory fragmentation caused by opening and closing tabs, but now I am suspecting that there is a memory leak in one of the add-ons that I have installed. The problem I am seeing is that when the process size gets to about 1.5GB in the "Mem Usage" stat in Task Manager (and it gets there quite regularly), Firefox freezes up. Does anyone have any ideas about how I could diagnose whether: Any of the add-ons are leaking memory? Something else is causing this problem?

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• How does Mac's command line compare to Linux?

  - by Nathan Long

  I love Ubuntu Linux - especially the commmand line. But I have to admit that, at least for now, Windows is more user-friendly - there's more software for it, more drivers, and more stuff just works. Knowing that Mac is built on Unix makes me wonder if it's the sweet spot between them. But I wonder: how similar is the Mac command line to Linux's bash? Could I pick right up with using vim and bash scripting and git, etc? Would common commands like changing directories be different? Does anybody know an online "compare and contrast" resource?

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• Mysql table Crashed during Optimize, table repair taking too long

  - by hellohellosharp

  One of my vital tables was being optimzied and MySQL crashed in the middle of it. It then said the table was corrupt. I am running repair but it is taking over an hour, I need this table up ASAP (I will even truncate it if necessary). Please help me get this solved. The table has about 54 million rows. This is a MyISAM. Any additional information needed, just ask. Here are the contents of my my.cnf: [mysqld] max_connections = 850 max_user_connections = 850 query_cache_size = 128M skip-external-locking key_buffer_size = 64M max_allowed_packet = 8M table_open_cache = 256 sort_buffer_size = 4M net_buffer_length = 16K read_buffer_size = 1M read_rnd_buffer_size = 1M myisam_sort_buffer_size = 32M innodb_file_per_table tmp_table_size = 100M max_heap_table_size = 64M thread_cache_size = 8 wait_timeout=25 interactive_timeout=25 table_cache=600 innodb_buffer_pool_size = 4G innodb_thread_concurrency = 8 innodb_flush_method = O_DIRECT # This setting allows the use of asynchronous I/O in InnoDB. # The following files track usage of this resource: # - /proc/sys/fs/aio-max-nr # - /proc/sys/fs/aio-nr # Default limit is 65536, of which a single instance of mysql uses 2661 out of the box innodb_use_native_aio = 1

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• What is a Linux device name for RAID of sas drives?

  - by flashnik

  I have a RAID1 using Promise FastTrack TX2650 consisting of 2 SAS drives. What is a Linux device name for them? Like sda is for first sata drive. I have Windows server so I can't look it directly but need this information for smartctl usage. UPDATE. I found how to access RAID: smartctl -d scsi sdb (because I also have a SATA drive). But in this case I just get an information about just raid controller though I wantto get information about drives itself. Is it possible? Promises's control panel provides information only about their healthy status (boolean) and I want more. Mostly now I need information about temperature.

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• Eclipse Pydev Ctrl-Click (Go to Definition) Doesn't Work OSX

  - by Koobz

  My Pydev set up in OS X is kind of busted. I'm working on a Django project and I find that Ctrl-Click never actually goes to the definitions of any of my objects or functions. I actually have a symlink to Django/django in my workspace so that it's easier to cross reference Django code. My guess is that something is wrong with the builder, but it doesn't throw up any errors. Does anyone have advice here? Different topic: does anyone know of a good way to use Ctrl-Shift-R (Open resource) and filter files by folder? It's not that useful in python projects where you have 20 urls.py showing up.

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• OSX Menu bar doesn't appear til opening an application

  - by gms8994

  When I boot my MBP, the menu bar doesn't appear. When I open Mail.app or Safari, the menu bar appears. I've searched for a bit, and nothing seems to talk about this. Is there a way to fix this? UPDATE From the Console logs: 3/29/12 7:05:10.037 AM com.apple.launchctl.Aqua: load: option requires an argument -- D 3/29/12 7:05:10.037 AM com.apple.launchctl.Aqua: usage: launchctl load [-wF] [-D <user|local|network|system|all>] paths... 3/29/12 7:05:10.100 AM com.apple.launchd.peruser.501: (com.apple.launchctl.Aqua[153]) Exited with code: 1

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• Assigning resources to MS Project 2007

  - by adam

  Hi, I'm planning a redesign of a site in Project 2007. I have three developers to hand, all with the same skills. There are about 80 templates to be rendered as part of the redesign, and each template has been added as a project task. Each of these tasks can be done by any of the 3 devs, and each will take a day (with a few exceptions). There is no order in which the tasks must be completed, so there are no predecessor rules. I'd like to be able to assign tasks to a 'Developer' resource group, and for Project to see that three tasks can be done at once (as the group has three resources members) and queue the tasks as such. Googling leads me to Team Assignment, but that appears to be part of Project Server. Surely I can do this in standalone Project? Thanks, Adam

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• How to execute a shell script on startup?

  - by vijay.shad

  I have create a script to start a server(my first question). Now I want it to run on the system boot and start the defined server. What should I do to get this done? My findings tell me put this file in /etc/init.d location and it will execute when the system will boot. But I am not able to understand how the first argument on the startup will be start? Is this predefined somewhere to use start as $1? If I want to have a case startall that will start all the servers in the script, then what are the options I can manage. My Script is like this: #!/bin/bash case "$1" in start) start ;; stop) stop ;; restart) $0 stop $0 start ;; *) echo "usage: $0 (start|stop|restart)" ;; esac

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• Is there a security risk for allowing people to set their DNS so their own subdomains can be route to my server?

  - by DantheMan

  Lets say that I have a web application, built in Django and deployed with Nginx. Is it a good idea to offer a service that allows customers to request that a subdomain can be pointed at it. I figured this: If I dont allow this, then some companies wont want to access the service from http://mydjangoappmadeupname.com/bigcorporation/ They would rather access it through http://service.bigcorporation.com That would effectively mask that they are using an outside resource. Is there a significant risk that I am overlooking? Also do you think it would be easier to just set things up in Django to handle it, allowing Nginx to accept all domains and then pushing them to Django which would filter out if they are allowed or not, or would it be better to just update my Nginx log each time a client wanted this changed?

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• Keep context-configuration when redeploying via Cargo

  - by Björn Pollex

  I am using Tomcat 7 to host a web-application that requires a JNDI datasource to be set up. Because this resource is specific to this application, I would like to configure it inside the application-specific context-descriptor in $CATALINA_BASE/conf/[enginename]/[hostname]/. I am also using Cargo from Maven to deploy the web-application to Tomcat. The problem is that when I do a redeploy with Cargo, it first undeploys the application, before deploying it again. When undeploying it, Tomcat deletes the context-descriptor of the application, so it won't work after redeploying. I could of course package the context-descriptor with the application, but I would like to keep any such container-specifics out of the .war. Another alternative is to configure the datasource in the global context-descriptor, but that too seems wrong, because the datasource is supposed to be exclusive to my application. Is my approach fundamentally wrong? What is the best practice here? Is there any way to prevent Tomcat from deleting the descriptor when undeploying?

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• In Varnish stats, what does "Backend conn. reuses" and "recycles" mean?

  - by electblake

  I have varnish installed and I think it's working properly (not sure if it matters but I am using iptables reroute method to route ports incoming:80 > varnish:8080 > apache:80 Anyway, In varnishstat I see a pretty high Hitrate average (60-80%) which I am working on but I am unclear at what all of the stats presented by varnishstat Specifically the following Backend stats: 380 0.00 0.26 Backend conn. success 10122 15.00 6.85 Backend conn. reuses 267 0.00 0.18 Backend conn. was closed 10391 15.00 7.04 Backend conn. recycles I've read a blog post called "Varnishstat for dummies" which outlines a lot of details of varnishstat (I recommend it for beginners) but it does not go over these Backend stats. Feel free to explain here or link to a resource I've missed :) thanks!

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• Running evrouter at boot with init.d, or after xserver starts

  - by J V

  I'm using evrouter to set up mouse button binds, and init.d to start it. My init.d file: #!/bin/bash #Simple init.d script to run evrouter ### BEGIN INIT INFO # Provides: evrouter # Default-Start: 2 3 4 5 # Default-Stop: 0 1 6 # Short-Description: Set evrouter bindings # Description: Set evrouter bindings at boot time. ### END INIT INFO config="/opt/hacks/evrouterrc" case "$1" in start|restart|reload|force-reload) evrouter -c "$config" /dev/input/event* ;; stop) echo "Evrouter is not a daemon, change settings file at '$config' and restart" ;; *) echo "Usage: $0 start" >&2 exit 3 ;; esac evrouter however complains that: evrouter: could not open display "". If evrouter requires xserver to be up, how do I get init to wait until after xserver starts to run this script? If xserver restarts will this script run automatically? Running this with sudo services evrouter start still results in this error, can init.d scripts not tell where my display is? (Not exactly familiar with init, runlevels, etc)

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• Monitor the shell activity of a user on your Unix system?

  - by Joseph Turian

  Trust, but verify. Let's say I want to hire someone a sysadmin, and give them root access to my Unix system. I want to disable X windows for them, only allow shell usage (through SSH, maybe), so that all operations they perform will be through the shell (not mouse operations). I need a tool that will log to a remote server all commands they issue, as they issue them. So even if they install a back door and cover their tracks, that will be logged remotely. How do I disable everything but shell access? Is there a tool for instantaneously remotely logging commands as they are issued?

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• Simple, user friendly and strong file encryption in Windows

  - by Adam Matan

  I want a colleague of mine to send me a sensitive MS-Word document via e-mail. Since Word's encryption is questionable, I would like to encrypt the file using a passphrase. Do you know of any user-friendly encryption tool that a novice user can easily use? I wouldn't like to prompt for keys or anything like this - just provide simple interface for single file encryption. EDIT: I have solved this using Putty Secure Copy, through a Linux box I have somewhere. The user downloaded scp to the same directory where the file was, and I have send him the exact scp command by mail. Nice! Another Edit I have some additions (mainly the usage of winscp and perhaps virtual machines). My detailed answer appears below, as requested in comments.

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