OBI2182 drops off LAN when Laptop shuts down (Resolved)
SteveInWA:
This sounds like you have a bad Ethernet cable or port on your ThinkPad. Your "use WiFi on the laptop instead of Ethernet" test should determine if that's the case.
Vermonter:
On the off chance that someone else runs into this I'll document the situation and resolution.
Hardware: Thinkpad X1 Carbon 6th Gen. Lenovo Thinkpad Thunderbolt 3 Dock.
Operating System: Kubuntu 21.04
Was using the Ethernet port on the Dock to connect to first a TP-Link 5 Port Gigabit Ethernet Network Switch (TL-SG105) and then a NETGEAR 5-Port Gigabit Ethernet Unmanaged PoE Switch (GS305P). Same problem independent of the switch.
Notably, I've been using an OBi200 for years with no problems. Switched to an OBi2182. As indicated earlier in the thread the OBi200 worked flawlessly.
Shutting down the laptop would cause my phone to go completely offline.
In the end I found that using different Ethernet adapter "fixed" the problem. I grabbed a Cable Matters USB3 to Ethernet adapter (model number 202013) and have essentially the same network throughput without the problems with the phones. Given that the adapter is about $15 I've decided to call it a "fix" though the original problem is still unresolved. I've about a dozen other devices on my LAN, none of which had any issues, so I'm putting this down to some weird interaction between the driver for the Ethernet chip and this specific phone.
Thanks to SteveInWA and Sheffield_Steve for their input & clues.
SteveInWA:
Quote from: Vermonter on June 25, 2021, 08:38:31 am
Was using the Ethernet port on the Dock to connect to first a TP-Link 5 Port Gigabit Ethernet Network Switch (TL-SG105) and then a NETGEAR 5-Port Gigabit Ethernet Unmanaged PoE Switch (GS305P). Same problem independent of the switch.
There's your problem. I haven't used your particular model of Thinkpad dock, but "back in my day", there was a problem with the docks causing problems like that.
It's a bad idea to put the dock ahead of the rest of your network-attached equipment. Put the dock on the switch like everything else.
Navigation
[0] Message Index
[*] Previous page