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• Sudden loss of Wi-Fi connectivity on OS X

  - by GJ.

  Occasionally while I work, without any special provocation, I lose connectivity via Wi-Fi. Other devices connected to the same wifi network have no interruption, and the problem gets resolved once I reboot my MacBook Air, so it's definitely a local problem. Observations: The Wi-Fi symbol in the menu indicates that I'm still connected, but apps can't actually connect neither to the Internet nor to other devices in the LAN. I can't connect to an alternate Wi-Fi network (e.g. Wi-Fi tethering via iPhone). I can connect to the Internet via iPhone USB tethering but this seems to only work some of the time. Only a reboot solves the problem but a regular restart gets stuck on a grey screen with rotating wheel (after all applications have closed) and I have to do a hard reset. How should I go about troubleshooting this? It used to happen very rarely but now is becoming more frequent (approaching once every 2-3 days on average).

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• Wi-fi signal with keeping the internet cable

  - by daGrevis

  So the situation is that I have Ethernet cable which provides internet to my computer. Thing I want is to have wi-fi connection in my house and Ethernet cable (like I have before) to use for my PC. I will use wi-fi for my laptop and mobile phone. I think I need router for that and I'm looking at Asus RT-N16 (suggested in Coding Horror) for it, but I am not sure. Is it the right thing for me and I will be able to get wi-fi signal and keep the Ethernet cable? I guess the system will be that current cable goes into router, router provides wi-fi signal and gives back new cable... or something like that. Thanks in any advice! And sorry if topic isn't in right site.

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• Why does my microwave kill the Wi-Fi?

  - by Ohlin

  Every time I start the microwave in the kitchen, our home Wi-Fi stops working and all devices lose connection with our router! The kitchen and the Wi-Fi router are in opposite ends of the apartment but devices are being used a little here and there. We've been annoyed by the instability of the Wi-Fi for some time and it wasn't until recently we realized it was correlated to microwave usage. After some testing with having the microwave on and off we could narrow down the problem to only occurring when the router is in b/g/n mode and uses a set channel. If I change to b/g mode or set channel to auto then there is no problem any more...but still! The router is a Zyxel P-661HNU ("802.11n Wireless ADSL2+ 4-port Security Gateway" with latest firmware) and the microwave is made by Neff with an effect of 1000W (if this information might be useful to anyone). There is an "internet connection" light on the router and it doesn't go out when the interruption occurs so I think this is only an internal Wi-Fi issue. Now to my questions: What parts of the Wi-Fi can possibly be affected by the microwave usage? Frequency? Disturbances in the electrical system? How can setting Auto on channels make a difference? I thought the different channels were just some kind of separation system within the same frequency spectrum? Could this be a sign that the microwave is malfunctioning and slowly roasting us all at home? Is there any need to be worried? Since we were able to find router settings that cooperate well with our microwave's demand for attention, this question is mainly out of curiosity. But as most people out there...I just can't help the fact that I need to know how it's possible :-)

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• Free space not reclaimed after online resizing ext4 in Ubuntu 9.10

  - by TiansHUo

  My root partition was filling up, with only 500 mbs left, I wanted to resize my root partition from 20 Gb to 40Gb So I resized my partition by using these steps: Using Gparted to resize another partition to give space for the EXT4 Using fdisk, deleting the root partition (on /dev/sda2), and creating it again using the new size resize2fs /dev/sda2 Updating grub2 But now the problem is that although I can boot in my new partition and the new partition shows it is 40Gb, but the free size was still 500mb. So I booted from a LiveCD and checked with e2fsck -p /dev/sda2, it reported clean. So I added the -f flag (force check), still, the drive is full.

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• iPhone/iPad: Get Alerts When Paid Apps Go Free

  - by Gopinath

  iPhone users has thousands of cool applications to choose. These apps are either paid or absolutely free. Many of the paid applications goes free for either a limited time or forever depending on the mood of their developers. Will it not be cool to get alerts whenever a paid app goes free? Yeah, it will be great. Free App Alert is a handy website that checks iTunes store regularly and sends alerts to it’s subscribers about the apps that have gone from paid to free. You can receive the alerts by following them on twitter, facebook or subscribing to the traditional RSS feeds(yeah RSS is a traditional technology). The home page of this website shows the apps that have gone free today and you can browse through the previous day free apps listing with the help of links available at the bottom. Free App Alert is definitely a cool site to check out for iPhone/iPod/iPad users and certainly easier than scrolling through iTunes store and checking prices. Tip: Immediately download the app that have gone from paid to free as many apps are free for limited time. You can see many free apps going back to paid version if you go through the previous pages the website. Join us on Facebook to read all our stories right inside your Facebook news feed.

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• Is there any existing (old) game that released graphic as free or open source?

  - by Alexey Petrushin

  I'd like to (re)create an online version (html5/JS) of some old game, for example something like HoM&M 2. Maybe, some of old games were released as free or open source (I'm interested in the graphical assets only)? I heard something about Red Alert been released as free, but I'm not sure if it's permitted to reuse graphical assets in such manner. Do You know such games? Another question - can You please share Your thoughts, rough estimate - how much it will cost to pay an artist to create graphics similar to HoM&M 2?

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• How well do free-to-open-source-projects policies work in practice?

  - by Steve314

  In comparison with an open source license and requesting donations, is a free-for-open-source-projects (or free for non-commercial developers) closed source and otherwise commercial project likely to get more license fees? Or just to alienate potential users? Assume the project has value to programmers - I'm looking for generalizations here, though specific examples comparing existing projects will be very interesting. What I have in mind involves code generating programming utilities. And one issue I can think of, either way, is a near total inability to enforce any license restrictions. After all, I can't go around the internet demanding that everyone show me their source code just in case!

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• Best (physical) DRM free MP3 players [closed]

  - by alex

  I'm looking to purchase an MP3 player soon. It should: Be compatible with Windows Media Player Hold at least 40 GB Be completely DRM free Be reliable and well built. I don't want to repeat my iRiver experience. Be small enough to be comfortably carried in my pocket. I don't care about looks, this can be the ugliest beast ever. Knowing this, what should I buy? [I figured this is almost on topic for Super User, if not: vote to close it.]

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• Free/opensource application for charting stock prices?

  - by Homunculus Reticulli

  I am looking for a free or FOSS software application for SIMPLY charting stock prices. I am not interested in any of the other nonsense typically bundled with such packages (technical analysis, back testing, tracking etc, etc). All I want to do is the following: Import file from CSV and plot on the chart Ability to scroll the chart left/right (zoom feature would be nice to) Ability to draw straight line (between 2 points) on the plot Ability to plot the graph for different resolutions (for e.g weekly, monthly - or some other custom resolution that I want) print the displayed graph (I can always use screen capture if printing is too much to ask) Thats all I want to do. I am not interested in anything else. I would have thought I could have found something by now. I would have written my own tool (I still will do that at a later stage), but I am a bit short of time at the moment, so I just want something that will do all of the above. Can anyone recommend a package. Last but not the least, I am running on Linux (and would prefer to do so - BUT if I have to, I can run on ahem - you know, Windows)

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• No Wi-Fi after system reboot

  - by ILya

  Something strange is happening... I've installed a Wi-Fi card into my Ubuntu Server 11.04 machine. To configure it I do the following: sudo vi /etc/network/interfaces add: iface wlan0 inet dhcp wpa-driver wext wpa-ssid "Sweet Home" wpa-ap-scan 1 wpa-proto WPA wpa-pairwise TKIP wpa-group TKIP wpa-key-mgmt WPA-PSK wpa-psk <A KEY> auto wlan0 then: $ sudo /etc/init.d/networking restart * Running /etc/init.d/networking restart is deprecated because it may not enable again some interfaces * Reconfiguring network interfaces... ssh stop/waiting ssh start/running, process 1522 ssh stop/waiting ssh start/running, process 1590 And my machine successfully gets an ip to my wireless adapter. But after reboot it doesn't get any ip in wireless network. To fix it I run /etc/init.d/networking restart again and all is fine again - it gets an ip. I understand that I simply should add it to my startup scripts to make it work properly, but maybe there is a better way to configure it?

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• Data Networks Visualized via Light Paintings [Video]

  - by ETC

  All around you are wireless data networks: cellular networks, Wi-Fi networks, a world of wireless communication. Check out this awesome video of network signals mapped over a cityscape. What would happen if you made a device that allowed you to map signal strength onto film? In the following video electronics tinkerers craft an LED meter and use it to paint onto long exposure photographs with phenomenal results. Immaterials: light painting Wi-Fi [via Make] Latest Features How-To Geek ETC Learn To Adjust Contrast Like a Pro in Photoshop, GIMP, and Paint.NET Have You Ever Wondered How Your Operating System Got Its Name? Should You Delete Windows 7 Service Pack Backup Files to Save Space? What Can Super Mario Teach Us About Graphics Technology? Windows 7 Service Pack 1 is Released: But Should You Install It? How To Make Hundreds of Complex Photo Edits in Seconds With Photoshop Actions Add a “Textmate Style” Lightweight Text Editor with Dropbox Syncing to Chrome and Iron Is the Forcefield Really On or Not? [Star Wars Parody Video] Google Updates Picasa Web Albums; Emphasis on Sharing and Showcasing Uwall.tv Turns YouTube into a Video Jukebox Early Morning Sunrise at the Beach Wallpaper Data Networks Visualized via Light Paintings [Video]

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• Few problems on Dell xps 15 L502 (screen brightness ,blutooth,wi-fi power management problems)

  - by Web-E

  I am running ubuntu 11.10 32bit in my dell xps L502. Working good except few problems. Blue tooth always turned on reboot,I would like to turn it off always. Screen brightness is not saved.Every time I reboot, the screen goes back to full brightness.How to save that? and the most important problem is internet speed through wi-fi is really very slow when operating on battery.the card is intel centrino Advanced-N 1030 with integrated blue tooth. Any help will be appriciated... :)

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• Wi-fi interface fails to authenticate on secured networks

  - by Eduardo Bezerra

  the problem is that I can't connect to wireless networks that have security enabled. I can connect fine to the unsecured network of my university, but not to the secured one in the same building. Also, it fails to connect to my home wireless router, which uses wpa2 encryption. Any ideas? I have a Broadcom Corporation BCM43224 802.11a/b/g/n (rev 01), with pci id [14e4:4353], running Ubuntu 12.10 on a macbook pro 6,2. I'm using bcmwl-kernel-source package with kernel module wl to enable my wi-fi device.

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• Wi-Fi not working only on Ubuntu computer?

  - by Joseph_carp

  The Wi-Fi at our house does not work on my Asus notebook running Ubuntu 12.04. It works fine on all other devices except this one. Internet worked fine before I had Ubuntu and I had Windows 7, but we also had a different ISP and place. My roommate's Windows 7 notebook and netbook both work fine with the internet and so do all of our phones and iPods. I do not know what is wrong because it works fine EVERYWHERE else, but when I am connected to my own router at my house it is either EXTREMELY slow or it just loads and loads and loads. I have all of the correct drivers and all that so why is it just this one connection that is a problem. I do not know if this matters but the ISP is Comcast and so is the Modem/wireless-router. Any help is much appreciated, thank you.

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• Syntax error near unexpected token 'fi'

  - by Bill Sherwin

  I have created a very simple script (see below) but cannot get it to run properly. I always get messages saying line 5: syntax error near unexpected token 'fi' line 5: 'fi' when I try to execute this script. #!/bin/sh rm /opt/file_name if $? -ne 0 then echo 'error' fi exit I am running this on Red Hat Linux if that makes any difference. If any one can help identify what is wrong with the if statement I'd really appreciate it. Bill

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• Free downloadable products in Magento

  - by Aaron Newton

  Hello Magento boffins. I am using Magento to build an eBooks site. For the release, we plan to have a number of free downloadable books. We were hoping that it would be possible to use the normal Magento 'catalog' functionality to add categories with products underneath. However, since these are free downloadable products, it doesn't really make sense to send users through the checkout when they try to download. Does anyone know of a way to create a free downloadable product which bypasses the checkout altogether? I have noticed that there is a 'free sample' option for downloadable products, but I would prefer not to use this if I can as I plan to use this field for its intended purpose when I add paid products.

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• Looking for a royalty free sci-fi sounding song thats 1:00+ long, and costs <= $5

  - by CyanPrime

  I'm looking for a royalty free sci-fi sounding song thats 1:00+ long, and costs less then, or is $5 usd. I want to have a nice BGM for my engine demo I'm going to release for a game I'm planing on having go commercial. I don't want to spend too much money on it, so my limit is $5 usd. I want it to be at least a 1:00 in length. Where should I look? Or even better, do you have a link to a song that meets the criteria?

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• Problem with Closure properties of context free languages

  - by altius

  hello i have the following sentence a language L1={a^n * b^n : n=0} and L2={b^n * a^n : n=0} are context free languages so they are close a=under the L1L2 so L={a^n * b^2n A^n : n=0} must be context free too because it is generated by a close property I have to prove if this sentence is true or not so i check the L language and i do not think that it is context free then i also saw that L2 is L1 reversed do i have to check if L1, L2 are deterministic ? please help because i am in a dead end

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• Best free Windows Forms validator control

  - by Salar

  What is the best free Windows Forms validator control. I want to use it in a free (and maybe open-source) project. I know these: ValidationProvider Control not working in VS2010 DXValidationProvider works only for devexpress controls. Supervalidator from DevComponents meets my needs but it isn't free. here is a picture of it:

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• Free XPS Viewer for Mac

  - by AngryHacker

  I can't seem to find one or my google-fu fails me. Is there one?

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• Cannot make Wi-Fi hotspot

  - by Junaid

  I want to make my laptop as wi-fi hotspot. To do so, I pressed button Settings-Network-Wireless-Use as Hotspot.. Then it creates a wireless network connection 'Hostspot' and connects. But it gets disconnected just after making connection. Here is my network hardware info: sudo lshw -C network *-network description: Wireless interface product: WiFi Link 5100 vendor: Intel Corporation physical id: 0 bus info: pci@0000:04:00.0 logical name: wlan0 version: 00 serial: width: 64 bits clock: 33MHz capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless configuration: broadcast=yes driver=iwlagn driverversion=3.0.0-12-generic firmware=8.83.5.1 build 33692 latency=0 link=no multicast=yes wireless=IEEE 802.11abgn resources: irq:47 memory:d9200000-d9201fff *-network description: Ethernet interface product: RTL8111/8168B PCI Express Gigabit Ethernet controller vendor: Realtek Semiconductor Co., Ltd. physical id: 0 bus info: pci@0000:05:00.0 logical name: eth0 version: 02 serial: size: 100Mbit/s capacity: 1Gbit/s width: 64 bits clock: 33MHz capabilities: pm msi pciexpress msix vpd bus_master cap_list rom ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=full firmware=N/A ip=192.168.1.4 latency=0 link=yes multicast=yes port=MII speed=100Mbit/s resources: irq:45 ioport:2000(size=256) memory:d5010000-d5010fff memory:d5000000-d500ffff memory:d5020000-d502ffff My machine is running on Ubuntu 11.10 Can anybody help in it? Thanks

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• Free media center PC software which runs on Windows XP

  - by Kent

  Is there something which may: Play music, at the very least in MP3-format Play video in various codec's Helps in recording video of shows from TV through a TV-in card Helps in organizing music and videos Works with a keyboard and mouse Additional pluses are: If it also is possible to browse the web through it, or at least start the web browser Has some games. Maybe through MAME or some other emulation like SNES or something. If it's also possible to control it through a game pad.

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• Recommend a free/cheap CRM system [closed]

  - by Dan Hedley

  I am part of a 4 person volunteer team who manage a small housing development in London. We need a low-cost/no-cost contact management and issue tracking system. Specifically, it needs to be: -Web-based, or easily shared between 4 people working out of their homes -Easy to backup and restore -Decently secure Does anyone have any recommendations? I am reasonably technically literate, so a PHP-based solution running on a cheap hosting package would definitely be a viable option. Many thanks.

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• Best Free ISO Mounting Software for Windows

  - by Brett Veenstra

  What do you find as the best ISO / disk image mounting software out there? You can give a nod to $$$ alternatives, but I'm looking for the best freeware and support for DVD-size images as well. EDIT I actually use Virtual Clone Drive regularly, and would recommend that over anything else.

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• Yoga Pro 2 Wi-Fi not working

  - by user293004

  I installed Ubuntu 14.04 on my new Yoga Pro 2 and the wireless is not working. It started with Windows 8 on it. The Network Manager says Wi-Fi is disabled by hardware switch. I tried putting a blacklist file in ect/modprobe.d as has been suggested in many places. I called the file "blacklist-ideapad_laptop.conf" and wrote in the file blacklist ideapad_laptop I checked to make sure that the wireless is enabled in the BIOS. It is. I ran rfkill list all and it displayed: 0: hci0: Bluetooth Soft blocked: no Hard blocked: no 2: phy0: Wireless LAN Soft blocked: no Hard blocked: yes I ran iwlist wlan0 scan and it displayed: wlan0 Failed to read scan data : Network is down I ran sudo rmmod ideapad_laptop and it displayed: rmmod: ERROR: Module ideapad_laptop is not currently loaded. I ran ifconfig wlp1s0 up and it displayed: wlp1s0: ERROR while getting interface flags: No such device. I ran "lspci" and it displayed: 01:00.0 Network controller: Intel Corporation Wireless 7260 (rev 6b) I ran sudo lshw -c network and it displayed: *-network DISABLED description: Wireless interface product: Wireless 7260 vendor: Intel Corporation physical id: 0<br> bus info: pci@0000:01:00:0.0 logical name: wlan0 version: 6b serial: 7c:7a:91:5f:9b:fa width: 64 bits clock: 33MHz capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless configuration: broadcast=yes driver=iwlwifi driverversion=3.13.0-24-generic firmware=22.24.8.0 latency=0 link=no multicast=yes wireless=IEEE 802.11bgn resources: irq:61 memory:b0400000-b0401fff This No wireless with Intel Centrino Advanced-N 7260 seems to be dealing with a similar issue. It suggests that I need to update my firmware. So I downloaded iwlwifi-7260-ucode-23.214.9.0 from Intel's website. I put the file "iwlwifi-7260-9.ucode" in /lib/firmware and ran "sudo lshw -c network" again. It displayed exactly as before. Is there something else I need to do install the new firmware?

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