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by bsder
Thu Oct 11, 2018 9:06 am
Forum: Troubleshooting
Topic: WiFi only works when Ethernet plugged in
Replies: 9
Views: 746

Re: WiFi only works when Ethernet plugged in

Sigh. After I got an HDMI cable and a USB hub to plug in my keyboard, I could see that the RPi could ping out to the world but not to other wireless devices. Apparently DD-WRT has a known bug that nobody knows how to kill wherein going device to device on the same network occasionally fails. Sorry f...
by bsder
Tue Oct 09, 2018 9:09 pm
Forum: Troubleshooting
Topic: WiFi only works when Ethernet plugged in
Replies: 9
Views: 746

Re: WiFi only works when Ethernet plugged in

It is a bit odd for both the wireless and wired router interfaces to have the same IP assignment unless they are bridged. But they don't: "eth0 src 192.168.13.147", "wlan0 src 192.168.13.171". They have the same default gw "default via 192.168.13.1" which is normal. My guess is the router's wifi is...
by bsder
Tue Oct 09, 2018 9:05 pm
Forum: Troubleshooting
Topic: WiFi only works when Ethernet plugged in
Replies: 9
Views: 746

Re: WiFi only works when Ethernet plugged in

It appears to be a routing problem. Both eth0 and wlan0 have the same localnet. 192.168.13.x. With the same size localnet (255.255.255.0), the smallest metric (eth0) will have routing priority. It is a bit odd for both the wireless and wired router interfaces to have the same IP assignment unless t...
by bsder
Tue Oct 09, 2018 9:03 pm
Forum: Troubleshooting
Topic: WiFi only works when Ethernet plugged in
Replies: 9
Views: 746

Re: WiFi only works when Ethernet plugged in

Presumably, this is a routing issue somewhere involving hotplugging. But I simply don't know how to hunt this down. Any help would be appreciated. Maybe the RPi is fine and it is the router that is 'confused'? Have you tried disconnecting the cabled Ethernet, rebooting the router, and restarting th...
by bsder
Tue Oct 09, 2018 9:36 am
Forum: Troubleshooting
Topic: WiFi only works when Ethernet plugged in
Replies: 9
Views: 746

WiFi only works when Ethernet plugged in

Hi, folks, My WiFi only seems to work when my Ethernet is plugged in. I've seen this issue discussed in various places, but most of the solutions are sufficiently old that they no longer apply. My WiFi asks for and gets an IP address. That doesn't seem to be an issue. Even the router thinks that it ...

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