WiFi restoration

[sean darcy]

My cell phone has no problem. chromecast has no problem. Shifting seats 
doesn't make it go away. I'm 20 feet from the router in line of sight. 
I'm not in a faraday cage. There are no overlapping channels.

There's no RF voodoo here.

sean

On 04/28/2015 02:52 AM, Tim wrote:
> Timothy Murphy wrote:
>>> One room in my house is at the boundary of WiFi reception,
>>> and WiFi occasionally fails there.
>>> When this happens it is nearly always restored by re-booting.
>>> Re-starting NetworkManager never does the trick, however.
>>> Is there any other step I could take, short of re-booting?
>>> I'm running Fedora-21/KDE.
>
> sean darcy:
>> I'm about 10 feet directly across from an n wireless router. And what
>> you describe happens 2-3 times a day. Never on my wife's windows laptop.
>> BTW, I don't reboot, just disconnect and reconnect.
>
> You could be in a dead spot for wireless reception - reflections of
> signals around the room you're in merge and cancel out where your
> computer's antenna is located.  Try moving position a bit.  I can
> produce this sort of problem when just a couple of feet from an access
> point.
>
> You could be using the same WiFi channel as a neighbour, and the clash
> of each others signals messes up yours.  Try changing your access
> point's channel.  I've had that problem, too.  Changing channels made a
> world of difference.  I wish the interface that shows your nearby
> networks that you use to pick the one you wanted showed what channels
> were in use, rather than having to use some other debugging tool.  It'd
> make setting up your wireless LANs a lot easier.
>
> Some access points have an automatic option for them to pick which
> channel to use.  Mine always automatically picked the worst one to use.
> Logically speaking, it'd be scanning nearby networks, and avoiding
> channels that are in use; or, for where they're all in use, opting to
> re-use the channel with the weakest signal, presuming that it was the
> furthest one away.  However, there's a fundamental flaw with this
> process - the access point can only determine best and worst channels
> for itself, your clients are in other locations, and which
> already-in-use channels are stronger and weaker, for them, will probably
> be a different set of channels than the access point's.
>