hello all,
i am working as a network admin . in our client company we are eabling more than 70 access point in these 5 are outdoor access points . in this outdoor access points i am getting channel interference is failed , i have changed the channel manually through wlc . at that time only i am getting passed ,after that again it will be failed .…
I came back from college and brought my desktop computer. Family recently switched to Verizon FIOS and got a new router because of it. Unfortunately, my connection to the new wifi network is awful, with the download speeds (tested through speedtest.net) fluctuating wildly and often dropping below 1.5 Mbps. A laptop in the same room gets 20 Mbps.…
I currently am running a media center/server on a Lubuntu machine. The machine specs:
Core 2 Duo Extreme
EVGA SLI 680i MotherBoard
2 GB DDR2 Ram
3 Hard Drives no raid - WD Caviar Black, Green, and Samsung Spinpoint
Galaxy GTX 220 1GB
External USB Creative XI-FI Extreme Card
550W Power Supply
This machine is hooked up…
Symptoms
My audio is riddled with pops/crackles/glitches. Sometimes I swear the glitches sound exactly like the facebook messenger sound (best comparison I can give).
Cause
Using DPC Latency Checker, it reports the latency to be an abysmal 17,500µs (0.0175s). The first thing I did was disable my 802.11n wireless adapter. This immediately…
Like all sufficiently advanced technologies, Wi-Fi can feel like magic. But Wi-Fi isn’t magic – it’s radio waves. A variety of things can interfere with these radio waves, making your wireless connection weaker and more unreliable. The main keys to improving your wireless network’s signal are positioning your router properly — taking…
In my neighbourhood there are:
11 wifi signals on channel 1
2 wifi signals on channel 4 (including mine at the mo)
8 on channel 6
6 on channel 11
According to the diagram on wikipedia Mine on channel 4 will suffer interference from channel 1 and channel 6, so a total of 20 other networks(!).
So would I be better to join channel…
This Server Fault blog post shows some tools you can use to view interference on your wireless network: blog.serverfault.com/2012/01/05/a-studied-approach-at-wifi-part-2/. They mention Vistumbler, which only works on PC's. Is there a similar tool I can use to measure wireless interference on a Mac?
Also, is it better to be on a…
I want to find out if wireless interference is causing any problems with my wireless networks. I remember seeing a piece of software that let you see what networks where in range and where they fell in the spectrum, aswell as any other sources.
Anyone know a way/a piece of software that can do this?
I have a set of Logitech 5.1 speakers where each speaker and the source plug into the subwoofer. I'm using a Griffin Firewave with output from my MacBook Pro, and output from my custom-built desktop with a switch in the middle (built it myself out of an old Belkin A/B parallel switch).
Recently, I've noticed that I can hear a…
I've been experiencing problems with my wireless connectivity lately, and want to make sure that it's not related to the abundance of other wireless routers here in my building.
So, what I'm looking for is a method (probably via some application or another) to audit the wireless channels (and other factors that might be…
I've got some legacy code which checks that some file is read-only and readable only by it's owner, i.e. permissions set to 0400. I also need to give read-only access to this file to some other user on the system. I'm trying to set extended ACLs, but this changes 'regular' permission bits in a strange way also:
$ ls -l…
I use the jQuery-ui tabs widget as a navigation. Contents of all tabs are load via ajax. Seems that there is interference between tabs. I mean, for example, if in page1 in tab1, there is an element whose ID is foo, and in page2 in tab2, there is an element with the same ID. And in both page, there is javascript code to…
Today at WWDC, Steve Jobs gave his keynote and ended up having a failure on-stage when connecting to WiFi. Google had a similar issue a few weeks ago in the same conference center. Please reference the following article for more information.
http://news.cnet.com/8301-31021_3-20007009-260.html
I am looking for…
What audio cards would you recommend that eliminate hum, and hard-drive & mouse movement signal interference?
Hardware components:
Motherboard. Asus P5Q SE
Audio. Realtek ALC 1200, 8-Channel High-Definition Audio CODEC (on board)
Harddrive. WD Caviar 320 GB
Mouse. Logitech Marbleman USB
Mixer. Mackie d.4…
I am writing a serial communication program using the SerialPort class in C# to interact with a strip machine connected via a RS232 cable. When i send the command to the machine it responds with some bytes depending on the command. Like when i send a "\D" command, i am expecting to download the machine program…
Emacs wiki says:
Company does interfere with
Yasnippet’s native behaviour. Here’s a
quick fix:
http://gist.github.com/265010
The code is the following:
(define-key company-active-map "\t" 'company-yasnippet-or-completion)
(defun company-yasnippet-or-completion ()
(interactive)
(if…
How would you explain, troubleshoot (and solve) the following problem?
Wifi ADSL modem router D-link 2640R installed in living room at about 1.8m height. Working fine, synchronising and getting/serving stable internet connection.
First situation:
-Laptop 01 in other end of the house, let's say in…
I recently purchased a Belking Play dual-band router for my home. About every few hours, the router stops working or "cuts out" for several minutes before coming back online automatically.
My old one did this as well. I figured out a main problem was my wireless home phone, which sends a 2.4GHz…
My (Rogers) cable connection has been pretty bad recently (channels 3 and 10 are particularly fuzzy—it’s analog, not digital cable). Not surprisingly, this has caused my cable modem to drop out and have to reestablish a connection a couple of times since it started. The poor connection of course…
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…
I have a few access points on one floor of a high-rise building. They support both 2.4 ghz and 5ghz.
When I used 2.4 ghz, the channel management features did not seem to work and we experienced frequent problems. When I switched to 5 ghz the problems went away.
However, the 5ghz standard…
I know that a servlet container, such as Apache Tomcat, runs in a single instance of the JVM, which means all of its servlets will run in the same process.
I also know that the architecture of the servlet container means each web application exists in its own context, which suggests it is…
I want to have multiple scripts running from cron at the same time. They will all update, say, 500 rows with a unique status ID for that particular script to use.
If each script grabs the same type of rows to update, and the scripts run at once, will there be interference between the…
I'm currently building a server, and it's exhibiting the weirdest behavior with the hard drive. It is a 2U case, and I have trouble trouble accessing the Seagate SATAIII hard drive when it is in the bottom slot of the hard drive cage. The case is made of galvanized/anodized steel. …