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Forum Discussion

krgraham's avatar
krgraham
Tutor
Oct 25, 2017

CM1000 SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing

Using this modem with Comcast/Xfinity. Recently I started getting log messages "SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing"   Download speed it good and everythi...
Troubleshooting
krgraham's avatar
krgraham
Tutor
Oct 27, 2017

No performance issues at all. Ping tests and speedtests are all up to spec. Only problem shows up in logs and issue that devices which don't have their own date/time settings are apparently receiving erronious values.

vkdelta's avatar
vkdelta
NETGEAR Employee Retired
Oct 27, 2017

hi, most likely there was maitenance done in your area which brought down CMTS Line card. 

 

Are you seeing this every day ? or just couple of times? 

  • krgraham's avatar
    krgraham
    Tutor
    Oct 28, 2017

    This is always happening, i.e. it's the only entries in the Log which repeats regularly. 

    • vkdelta's avatar
      vkdelta
      NETGEAR Employee Retired
      Oct 29, 2017

      Please PM CM logs and CM MAC. I think I know you from our beta programs (or may be your name matches someone).