Hi Michael,
1. No, we are not using an on board card.
2. This is the device we are using: I210
3. Driver info:
driver: igb
version: 5.4.0-k
firmware-version: 3.25, 0x800006eb
expansion-rom-version:
bus-info: 0000:06:00.0
supports-statistics: yes
supports-test: yes
supports-eeprom-access: yes
supports-register-dump: yes
supports-priv-flags: yes
4. Linux: Ubuntu 16.04.7 LTS
Since we were able to access Linux system time, we tried phc2sys which is supposed to synchronize Linux system time according to HW clock on network card. We are not able to get the system clock to get synchronized.
Let us know if any other info is required.
Thanks,
Aravind Subbiah