Morning,

 

I've been having some trouble trying to get a WAVLINK 5Gbe to USB-C adapter working correctly in UNRAID.

 

I've installed the driver from the community app area and followed the instructions to correctly get a 5GB auto negotiation. I can confirm it's correctly negotiated by running ethtool eth0. it'll display 5000Mb/s for about 10 mins, with transfer speeds to back it up, until for some reason it drops down to 10Mb/s again with representative speeds. Reboot the system and repeat the same scenario.

 

Tried the same via a MacBook Pro, can't replicate the issue.

 

Any ideas?

 

UNRAID V7.0.0 Beta 2

HP Mini 400 G6

WAVLINK USB C to Ethernet Adapter NWU340GD (Realtek RTL8157) -  connected to the USB-C 3.1 port on the front

Please post diag file...

This issue with the WAVLINK 5Gbe to USB-C adapter dropping from 5Gbps to 10Mbps in unRAID could indeed point to a networking configuration issue, potentially related to MTU (Maximum Transmission Unit) or USB power management. Here’s how you can troubleshoot and address this problem:

 

Verify MTU Settings

MTU Mismatch: If the adapter or the network switch/router it connects to has mismatched MTU values, it may cause unstable connections.

Action:

Check the current MTU setting using ifconfig or ip link

ifconfig eth0
#or
ip link show eth0

 

 

Set the MTU to a compatible value, like 1500 (default for most networks):

*Via web ui... testing:
 

ifconfig eth0 mtu 1500
#or
ip link set eth0 mtu 1500

Test with a smaller MTU (e.g., 9000 for Jumbo Frames) if you're using high-performance networking.

?USB Power states?...

Check for USB Power Management Issues

USB Port Power Saving: USB devices, especially on front ports, may experience power-saving drops.

Action:

Plug the adapter into a rear USB port (often connected directly to the motherboard) instead of the front USB-C port.

Disable USB power management:

Edit /boot/config/go to add the following
 

echo on > /sys/bus/usb/devices/<device-id>/power/control

 

Replace <device-id> with the specific ID for your WAVLINK adapter (use lsusb to find it).

Check on forum reltek having issues agin...
--Update or Verify Drivers

Driver Mismatch: Ensure the correct Realtek RTL8157 driver is installed and loaded.

Action:

Update the driver via the Community Apps plugin.

Confirm the driver is loaded using
 

lsmod | grep r8157

If the driver is not correctly loaded, reinstall it and check for updates.
*(may need a extr 3rdparty install form slackware...)

 

Network Auto-Negotiation (5GB is werid 1GB or 10 GB... 2.5 is newish 5GB exist but not the norm)...
 

Auto-Negotiation Issues: The adapter might struggle to maintain a 5Gbps link due to compatibility issues.

Action:

Manually force the link speed to 5Gbps using ethtool

ethtool -s eth0 speed 5000 duplex full autoneg on

Check link status:

ethtool eth0

*May need a user scirpt start at first run if this fixes...
 

test with different router...

Switch or Router Configuration

Switch Capability: Ensure the switch or router port supports 5Gbps and is not throttling the connection.

Action:

Confirm the port configuration on your network device (e.g., switch/router) supports 5Gbps and is not limited to 10Mbps or 1Gbps.

Update the firmware of the network device, if applicable.

--?this could also be kerneal realted... what unriad version are you running
uname -r

 

USB 3.1 Port Compatibility

USB-C Port Specificity: Some USB-C ports may not provide full support for high-speed adapters.

Action:

Test with a different USB-C or USB-A 3.1 port using an adapter.

Ensure the USB-C port you’re using supports high-speed USB 3.1 connections.

 

Cross-Test

Since the adapter works fine on your MacBook Pro:

Test it on another Linux-based system to rule out unRAID-specific issues.

If stable on another system, consider kernel or driver incompatibility in unRAID.