Adapter not working after DSM 7.3 (Realtek)

[MiranoVerhoef]

Description of the problem

Package not starting after 7.3 update

Description of your products

DS124
Linux Kobalt 5.10.55+ #81180 SMP Fri Oct 3 13:55:15 CST 2025 aarch64 GNU/Linux synology_rtd1619b_ds124
7.3
UGREEN USB 2.5G LAN-adapter Ethernet-adapter USB 3.0

Description of your environment

• connect directly to a PC or using a Ethernet switch
  Ubiquiti 2.5 gbe switch

Output of dmesg command

[notepad.txt](https://github.com/user-attachments/files/22804986/notepad.txt)

Output of lsusb command

miranoadmin@Kobalt:/$ lsusb
|__usb5          1d6b:0002:0510 09  2.00  480MBit/s 0mA 1IF  (Linux 5.10.55+ xhci-hcd xHCI Host Controller xhci-hcd.3.auto) hub
  |__5-1         2109:2817:9013 09  2.10  480MBit/s 0mA 1IF  (VIA Labs, Inc.          USB2.0 Hub              syno.ext.hub) hub
|__usb3          1d6b:0002:0510 09  2.00  480MBit/s 0mA 1IF  (Linux 5.10.55+ xhci-hcd xHCI Host Controller xhci-hcd.2.auto) hub
|__usb1          1d6b:0002:0510 09  2.00  480MBit/s 0mA 1IF  (Linux 5.10.55+ xhci-hcd xHCI Host Controller xhci-hcd.1.auto) hub

Output of ifconfig -a command

eth0      Link encap:Ethernet  HWaddr 90:09:D0:4E:0D:1E
          inet addr:192.168.2.234  Bcast:192.168.2.255  Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:31674 errors:0 dropped:0 overruns:0 frame:0
          TX packets:14128 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:21607107 (20.6 MiB)  TX bytes:12095001 (11.5 MiB)
          Interrupt:32

lo        Link encap:Local Loopback
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:65536  Metric:1
          RX packets:6176 errors:0 dropped:0 overruns:0 frame:0
          TX packets:6176 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:630698 (615.9 KiB)  TX bytes:630698 (615.9 KiB)

sit0      Link encap:IPv6-in-IPv4
          NOARP  MTU:1480  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

[hstriepe]

Same problem here. In fact, it hangs the login process when the USB adapter is connected.
I will wait with the update on my other NAS.

[fabiov64]

The package needs to be (at least) recompiled. But at the moment the Toolkit for the 7.3 is not yet available. As soon as it will be released, I'll try to recompile the package.

[kernalrom]

Same issue after 7.3. Thank you for looking into this!

[Tuti4120]

The same issue on DS223j.
Eventually managed to login and disabled the driver.
Waiting for the new one compiled ;).

[hstriepe]

Pulling the USB Ethernet plug will remove the block..

[Tuti4120]

Not on DS223j, re enabling the driver without Ethernet adapter will freeze the system again.
Double checked with mine.

[dd-hh-syn]

Same here on DS423 ... had to disconnect the ethernet adapter

[blasiusx]

Here with DSM 7.3 (aftter Update from 7.2.2) on DS916+, DS918+ and DS423+ no problem with the USB 2.5G Network Adapters. Driver is the lastest [2.20.1-1]. 2 x Adapters CAC-1420, and 1 x OHBUYAGN USB 5G LAN. It all works flawlessly with the Intel x86 Chipsets until now.

I don't know what would happen if I reinstalled the driver. I'd rather leave it as is. ;)

[kernalrom]

Looks like possibly if you had the driver already installed and upgrade to 7.3 you are fine. In my case I'm trying to install after upgrading to 7.3 which has been an issue

[Tuti4120]

Nope, on DS223j there is an issue after update, with the driver installed earlier.

[ghwong]

Found a temporary workaround to force kernel module load
(found this from sudo dmesg | grep r8152 --> "r8152: module verification failed: signature and/or required key missing - tainting kernel"

Here are the steps
##stopping the module
sudo synopkg stop r8152

##provide the path
R8152_MODULE_PATH=/var/packages/r8152/target/r8152/r8152.ko

##ensure the module that failed was removed
sudo rmmod r8152

##force load the module
sudo insmod ${R8152_MODULE_PATH}

##bring the interface up, for my case is eth2
sudo ip link set eth2 up

##request ip
sudo synonet --dhcp eth2

##check the status or ip
ip a

if everything work, you should see the new network interface ie. Lan3 show up

[ghwong]

I'm now using this script to automate the force load

#!/bin/sh

# Path to the kernel module
R8152_MODULE_PATH=/var/packages/r8152/target/r8152/r8152.ko

# 1. Wait for the system to settle (important for USB)
sleep 30

# 2. Unload the module if it failed to load properly
/sbin/rmmod r8152

# 3. Force-load the module (insmod bypasses the signature check)
/sbin/insmod ${R8152_MODULE_PATH}

# 4. Bring the network interface up and request IP (Change eth2 if needed)
/sbin/ip link set eth2 up
/usr/syno/bin/synonet --dhcp eth2

[dreimer1986]

DS420+ here and zero problems when already installed. I even caused me more problems by creating the script task from above before updating. (ETH2 did not come back).

So I recommend that you give one of the internal LAN adapters the same IP/Gateway and DNS and create the task before updating, then disable it and first try if it comes back without it. If not, switch over and enable/run the script task.

[blasiusx]

As I said, the upgrade to DSM 7.3 worked for me on x86 Intel platforms. And the 2.5 GB USB Ethernet adapter works perfectly, as long as it was installed and worked before the upgrade. But I won't to test this and uninstall the driver because I'm afraid of the risk of it no longer working afterwards.

[ghwong]

Totally agree on not fixing anything that is not broken. Mine was not working so I have to manually load the kernel to got it working again.