去githubhttps://github.com/awesometic/realtek-r8125-dkms/releases然后ThisistheLinuxdevicedriverreleasedforRealTekRTL81252.5GigabitEthernetcontrollerswithPCI-Expressinterface.-Kernelsourcetree(supportedLinuxkernel2.6.xand2.4.x)