Hello, I am running ubuntu 18.04, kernel 5.4.0-42-generic. I am trying to communicate with a hardware device over an ethernet connection. I am able to do this by setting a manual static IP address in the settings/network section. I am also able to connect to wifi. However, I am unable to do both simultaneously. As soon as I plug in the ethernet cable, the wifi switch in the settings menu goes off, and I can't turn it back on until I unplug the cable. I tried disabling the "connect automatically" on the ethernet network settings, and also checking the "use this connection only for resources on its network" checkbox under the Routes section. But no dice.
I have found a lot of similar forum posts, but either they're not running the same version of ubuntu as me, or they don't have the same settings menu. They reference a "disconnect on wired connection" checkbox under the wifi settings, which I do not see on my end. They also frequently reference changing settings in "network manager", but I don't have such an application. I am accessing settings by clicking the start menu, and then typing in settings.
Any ideas? Help would be greatly appreciated!
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