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 Forum index » Advanced Topics » Hardware » Networking
Wireless connection but no Ethernet connection
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disallowed


Joined: 22 Mar 2015
Posts: 279

PostPosted: Mon 06 Jun 2016, 08:40    Post subject:  Wireless connection but no Ethernet connection  

Hi. When I choose wireless at SNS, no problem, I connect to internet. But when I choose ethernet, there's not connection. Any help?
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8Geee


Joined: 12 May 2008
Posts: 1140
Location: N.E. USA

PostPosted: Mon 06 Jun 2016, 14:47    Post subject:  

Lotsa things go wrong when BOTH are connected at the same time. Turn off the Wifi when using eth0. Network Wizard included in most puppies is a better solution.
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don570


Joined: 10 Mar 2010
Posts: 4652
Location: Ontario

PostPosted: Mon 06 Jun 2016, 15:11    Post subject:  

With Windows you can have both going at once, because the drivers
are better written.

Most linux wireless drivers don't support ethernet and wireless being used
at the same time.
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jafadmin

Joined: 19 Mar 2009
Posts: 644

PostPosted: Mon 06 Jun 2016, 15:54    Post subject:  

Don, it's not a driver issue, it has to do with routing.
I have puppies set up as routers in a LAN to Wifi schema that do this all the time.
http://www.murga-linux.com/puppy/viewtopic.php?t=37520
If you use multiple NIC's (whether ethernet or wifi), you have to have entries in your routing table that say where traffic needs to go. There can be only one default route.
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don570


Joined: 10 Mar 2010
Posts: 4652
Location: Ontario

PostPosted: Mon 06 Jun 2016, 16:18    Post subject:  

I don't know much about networking Embarassed

...but there is something about the Raspberry pi board that doesn't allow
both to be used at once. This is mentioned on some youtube videos
showing the raspberry pi being networked.

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don570


Joined: 10 Mar 2010
Posts: 4652
Location: Ontario

PostPosted: Mon 06 Jun 2016, 16:41    Post subject:  

Near the end of this video the problem is mentioned. I had it too.

https://www.youtube.com/watch?v=D-s8Uj0uZoA

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tempestuous

Joined: 10 Jun 2005
Posts: 5468
Location: Australia

PostPosted: Sun 26 Jun 2016, 23:09    Post subject:  

don570 wrote:
there is something about the Raspberry pi board that doesn't allow both to be used at once.

You're probably referring to RPi models prior to ver 3, in which case this is neither a driver issue, nor a networking issue - it's a hardware issue.
The RPi has a combined USB/ethernet interface (LAN9512 chip) and when you have a wifi adapter plugged into the USB, which is a likely scenario for all models except the latest RPi 3b, then you may end up with a lot of data competing for bandwidth on the same (combined) interface. Apparently this can upset the driver (smsc95xx) and may even crash the kernel.
Taken in perspective, this is a problem related to a particular, and uncommon, range of hardware and associated kernel modules.

don570 wrote:
Most linux wireless drivers don't support ethernet and wireless being used at the same time.

That's untrue. You do the Linux community, and yourself, a disservice by jumping to such extreme assumptions.

Back to the original question ...
disallowed wrote:
When I choose wireless at SNS, no problem, I connect to internet. But when I choose ethernet, there's not connection.

At the risk of raising Barry's ire, I consider the SNS to be very poor, and it's unfortunate it was ever included in Puppy.
I think your problem may be simply solved by using one of the other network wizards - frisbee seems to be trendy, but the FULL network wizard should work fine.
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Flash
Official Dog Handler


Joined: 04 May 2005
Posts: 12589
Location: Arizona USA

PostPosted: Mon 27 Jun 2016, 04:20    Post subject:  

I have 2 stupid questions: 1.) How do we know disallowed is using a Raspberry Pi? And 2.) Do we know that disallowed has an Ethernet cable plugged into the socket?
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