So I tried all three of those sysctl's and the problem is still manifesting itself (every 10 minutes, Network Mananger pops up a disconnected/reconnected message.
Moreover, I'll not that this problem does NOT exist in 14.04 (tested with the same hardware, same wifi+ethernet, using a 14.04.5 LiveISO, which uses the Xenial kernel (very close to the kernel I'm running here on 16.04).
I really believe this problem is likely in Network Manager itself. I'm reopening that task for now.
So I tried all three of those sysctl's and the problem is still manifesting itself (every 10 minutes, Network Mananger pops up a disconnected/ reconnected message.
Moreover, I'll not that this problem does NOT exist in 14.04 (tested with the same hardware, same wifi+ethernet, using a 14.04.5 LiveISO, which uses the Xenial kernel (very close to the kernel I'm running here on 16.04).
I really believe this problem is likely in Network Manager itself. I'm reopening that task for now.