Manual IP & disabling wireless causes no networking

[swinokur]

Hi, I was working with a vanilla install today and lost control to the point where I needed to re-install. On the RPI 3b+, install the latest version (although this bug exists in previous versions as well):

• using the UI change wired networking to manual. Enter IP address, netmask, gateway. Save network, reconnect on WebUI to new IP.
• using the UI change wireless network to "off". Click Save.
• At this point the wired network drops.
• power cycling the rPI did not result in networking. (actually somehow the /imgpart partition became corrupted so I ended up having to re-image again, but that's another issue.)

I have seen this issue on 2.389 as well. At that time I was able to work-around the issue because I had previously installed the 7" touch / webUI plugin so I had an on screen UI and could toggle DHCP back on.

(I was able after some fiddling to get to a manual wired IP with wifi disabled but cannot remember the steps to reproduce that behavior at this moment.)

thanks!

[swinokur]

• I thought that perhaps "wireless hotspot" was the issue, so tried turning "wireless hotspot" off first, and then turning "wireless" off. But turning "wireless" off still disables the wired network.

[swinokur]

in this state, /etc/network/interfaces is:

# cat interfaces
auto wlan0
auto lo
iface lo inet loopback

allow-hotplug eth0
iface eth0 inet manual

allow-hotplug wlan0
iface wlan0 inet manual