GL-E750 USB to Ethernet Adapter Troubleshooting

Hello,

I am attempting to setup my USB-Ethernet adapter as additonal interfaces on my E750. When plugging in the device, I get link lights, but it does not show up in luci or in ip link output. I also see no changes in the dmesg output.

I have attempted to install any USB-ethernet drivers that I thought would be compatible, but have had no luck. I previously had this working with one of the Realtek drivers and have installed almost all available drivers, but ended up doing a downgrade from 3.104 to 3.100 and lost the configuration.

The USB adapter is a Vantec CB-U320GNA. Through google I was able to find that this device possible has the Realtek RTL8153 chipset in it.

Here are some of the packages I have installed to try and get this setup:
root@GL-E750:~# opkg list-installed | grep ‘usb’
kmod-rt2800-usb - 4.9.120+2017-11-01-9
kmod-rt2x00-usb - 4.9.120+2017-11-01-9
kmod-usb-acm - 4.9.120-1
kmod-usb-core - 4.9.120-1
kmod-usb-ehci - 4.9.120-1
kmod-usb-net - 4.9.120-1
kmod-usb-net-asix - 4.9.120-1
kmod-usb-net-asix-ax88179 - 4.9.120-1
kmod-usb-net-cdc-ether - 4.9.120-1
kmod-usb-net-cdc-ncm - 4.9.120-1
kmod-usb-net-huawei-cdc-ncm - 4.9.120-1
kmod-usb-net-ipheth - 4.9.120-1
kmod-usb-net-qmi-wwan - 4.9.120-1
kmod-usb-net-rndis - 4.9.120-1
kmod-usb-net-rtl8150 - 4.9.120-1
kmod-usb-net-rtl8152 - 4.9.120-1
kmod-usb-net-sierrawireless - 4.9.120-1
kmod-usb-ohci - 4.9.120-1
kmod-usb-ohci-pci - 4.9.120-1
kmod-usb-serial - 4.9.120-1
kmod-usb-serial-cp210x - 4.9.120-1
kmod-usb-serial-option - 4.9.120-1
kmod-usb-serial-sierrawireless - 4.9.120-1
kmod-usb-serial-wwan - 4.9.120-1
kmod-usb-storage - 4.9.120-1
kmod-usb-storage-uas - 4.9.120-1
kmod-usb-uhci - 4.9.120-1
kmod-usb-wdm - 4.9.120-1
kmod-usb2 - 4.9.120-1
kmod-usb2-pci - 4.9.120-1
kmod-usb3 - 4.9.120-1
libusb-1.0 - 1.0.22-1
libusbmuxd - 1.1.0-2
rt2800-usb-firmware - 2017-09-06-a61ac5cf-1
usb-modeswitch - 2017-12-19-f40f84c2-1
usbmuxd - 1.1.1-4
root@GL-E750:~# opkg list-installed | grep ‘rt’
ca-certificates - 20180409
gl-portal - 3.0.22-1
gl-tertf - 3.0.82-1
kmod-rt2800-lib - 4.9.120+2017-11-01-9
kmod-rt2800-usb - 4.9.120+2017-11-01-9
kmod-rt2x00-lib - 4.9.120+2017-11-01-9
kmod-rt2x00-usb - 4.9.120+2017-11-01-9
kmod-rtl8187 - 4.9.120+2017-11-01-9
kmod-rtl8xxxu - 4.9.120+2017-11-01-9
kmod-usb-net-rtl8150 - 4.9.120-1
kmod-usb-net-rtl8152 - 4.9.120-1

I am not sure what other information I might be able to share that would be helpful to get some assistance, but I can provide it if requested.

If anyone knows of any other adapters that are known to be comptable, I would be open to taking a look at those as well.

Thanks!

1 Like

Can you install usbutils and use lsusb to check if the device is found?

If it is USB device, generally it should have some info in dmesg at least.

This is what I get when I run it:

root@GL-AR750S:~# lsusb
Bus 002 Device 003: ID 05e3:0752 Genesys Logic, Inc.
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 002: ID 05e3:0618 Genesys Logic, Inc.
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
root@GL-AR750S:~# lsusb -t
/: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=ehci-platform/1p, 480M
|__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/4p, 480M
|__ Port 1: Dev 3, If 0, Class=Mass Storage, Driver=usb-storage, 480M
/: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=ehci-platform/1p, 480M

It looks like it was detected now somehow and the software automatically created a switch with vlans. I am not sure what got it to work, it was just like this when I came back to my PC.

Actually it’s not working anymore lol. But it does seem it’s detected, I just have to figure out the physical ports.