t@nvidia-desktop:/home/nvidia# ptp4l -i eth0 -p /dev/ptp0 -s -m ptp4l[522.704]: selected /dev/ptp0 as PTP clock ptp4l[522.706]: port 1: INITIALIZING to LISTENING on INITIALIZE ptp4l[522.706]: port 0: INITIALIZING to LISTENING on INITIALIZE ptp4l[522.706]: port 1: link up ptp4l[522.930]: port 1: new foreign master 48b02d.fffe.07645e-1 ptp4l[526.930]: selected best master clock 48b02d.fffe.07645e ptp4l[526.932]: port 1: LISTENING to UNCALIBRATED on RS_SLAVE ptp4l[528.930]: master offset 2390436331489660 s0 freq +0 path delay 21358548 ptp4l[529.930]: master offset 2390436268946292 s1 freq -62500000 path delay 21358548 ptp4l[530.930]: master offset -88216 s2 freq -62500000 path delay 21358548 ptp4l[530.932]: port 1: UNCALIBRATED to SLAVE on MASTER_CLOCK_SELECTED ptp4l[531.930]: master offset -131992 s2 freq -62500000 path delay 21358548 ptp4l[532.930]: master offset 1834912 s2 freq -60665088 path delay 19347884 ptp4l[533.930]: master offset -40752 s2 freq -61990278 path delay 19347884 ptp4l[534.930]: master offset 9012074 s2 freq -52949678 path delay 9738090 ptp4l[535.930]: master offset 8487352 s2 freq -50770778 path delay 698772 ptp4l[536.930]: master offset -3282392 s2 freq -59994316 path delay 698772 ptp4l[537.930]: master offset -5714832 s2 freq -62500000 path delay 556036 ptp4l[538.930]: master offset -5762264 s2 freq -62500000 path delay 556036 ptp4l[539.930]: master offset -5663288 s2 freq -62500000 path delay 413300 ptp4l[540.930]: master offset -5707000 s2 freq -62500000 path delay 413300 ptp4l[541.930]: master offset -5644178 s2 freq -62500000 path delay 306750 ptp4l[542.930]: master offset -5545396 s2 freq -62500000 path delay 164248 ptp4l[543.930]: master offset -5589124 s2 freq -62500000 path delay 164248 ptp4l[544.930]: master offset -5547952 s2 freq -62500000 path delay 79364 ptp4l[545.930]: master offset -5542690 s2 freq -62500000 path delay 30382 ptp4l[546.930]: master offset -5583244 s2 freq -62500000 path delay 27240 ---------------------------------------------------------------------------- nvidia@nvidia-desktop:~$ sudo phc2sys -a -r -m [sudo] password for nvidia: phc2sys[579.288]: reconfiguring after port state change phc2sys[579.289]: selecting CLOCK_REALTIME for synchronization phc2sys[579.289]: selecting eth0 as the master clock phc2sys[579.289]: phc offset 2390470210124868 s0 freq +0 delay 4128 phc2sys[580.290]: phc offset 2390470147598484 s1 freq -62499989 delay 4096 phc2sys[581.297]: phc offset -379797 s2 freq -62879786 delay 4352 phc2sys[582.313]: phc offset -17467 s2 freq -62631395 delay 4353 phc2sys[583.323]: phc offset 108206 s2 freq -62510962 delay 4250 phc2sys[584.324]: phc offset 119026 s2 freq -62467680 delay 4080 phc2sys[585.325]: phc offset 88738 s2 freq -62462261 delay 4352 phc2sys[586.326]: phc offset 53209 s2 freq -62471168 delay 4318 phc2sys[587.330]: phc offset 25954 s2 freq -62482461 delay 4454 phc2sys[588.343]: phc offset 9136 s2 freq -62491492 delay