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db3058's avatar
db3058
Guide
Sep 26, 2023
Solved

Nighthawk CM2050V Comcast Firmware Killed Speed

I understand Comcast has just updated the firmware in these routers from V2.01.03 to V9.01.01.  My download speed went from 934 to 225.  Comcast tech came out yesterday and cleared some signal loss b...
  • db3058's avatar
    db3058
    Oct 24, 2023

    I contacted a supervisor who actually responded he could see the modem was not properly provisioned, he opened another ticket and one of their best techs came out.  I think they fixed it from inside but he was excellent.  Problem solved after a month and about 15 tickets opened.   Thanks for the encouragement 

FURRYe38's avatar
FURRYe38
Guru - Experienced User
Sep 26, 2023

Please post a copy and paste of the modems connection status and event log page.
https://kb.netgear.com/30007/How-do-I-obtain-the-cable-connection-information-from-a-NETGEAR-cable-modem-modem-router
https://kb.netgear.com/30008/How-do-I-view-or-clear-the-event-logs-on-my-NETGEAR-cable-modem-or-modem-router

 

Has a power off for 1 minute then back ON with the ISP modem and router been performed since last update?
Be sure to restart your network in this sequence:
Turn off and unplug modem.
Turn off router and computers.
Plug in and turn on modem. Wait 2 minutes for it to connect.
Turn on the router and wait 2 minutes for it to connect.
Turn on computers and rest of network.

 

Be sure your using a good quality LAN cable between the modem and router. CAT6 is recommended. 
What is the brand and model of the host wifi router connected to the modem?

 

CM series modems are not routers. Just only modems.

  • db3058's avatar
    db3058
    Guide
    Sep 26, 2023
    TimePriorityDescription
    Tue Sep 26 05:38:37 2023(Notice (6))CM-STATUS message sent. Event Type Code: 24; Chan ID: 193; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 3.;CM-MAC=08:36:c9:b5:15:40;CMTS-MAC=00:90:f0:67:04:00;CM-QOS=1.1;CM-VER=3.1;
    Tue Sep 26 05:33:20 2023(Notice (6))CM-STATUS message sent. Event Type Code: 16; Chan ID: 193; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 3.;CM-MAC=08:36:c9:b5:15:40;CMTS-MAC=00:90:f0:67:04:00;CM-QOS=1.1;CM-VER=3.1;
    Tue Sep 26 00:28:32 2023(Critical (3))No Ranging Response received - T3 time-out;CM-MAC=08:36:c9:b5:15:40;CMTS-MAC=00:90:f0:67:04:00;CM-QOS=1.1;CM-VER=3.1;
    Tue Sep 26 00:28:24 2023(Notice (6))DS profile assignment change. DS Chan ID: 32; Previous Profile: ; New Profile: 1 2 3.;CM-MAC=08:36:c9:b5:15:40;CMTS-MAC=00:90:f0:67:04:00;CM-QOS=1.1;CM-VER=3.1;
    Tue Sep 26 00:28:23 2023(Notice (6))TLV-11 - unrecognized OID;CM-MAC=08:36:c9:b5:15:40;CMTS-MAC=00:90:f0:67:04:00;CM-QOS=1.1;CM-VER=3.1;
    Tue Sep 26 00:28:14 2023(Notice (6))Honoring MDD; IP provisioning mode = IPv6
    Tue Sep 26 00:28:06 2023(Critical (3))SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=08:36:c9:b5:15:40;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;
    Tue Sep 26 00:24:56 2023(Warning (5))ToD request sent - No Response received;CM-MAC=08:36:c9:b5:15:40;CMTS-MAC=00:90:f0:67:04:00;CM-QOS=1.1;CM-VER=3.1;
    Tue Sep 26 00:24:55 2023(Critical (3))Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=08:36:c9:b5:15:40;CMTS-MAC=00:90:f0:67:04:00;CM-QOS=1.1;CM-VER=3.1;
    Tue Sep 26 00:24:54 2023(Critical (3))SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=08:36:c9:b5:15:40;CMTS-MAC=00:90:f0:67:04:00;CM-QOS=1.1;CM-VER=3.1;
    Tue Sep 26 00:24:54 2023(Critical (3))Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=08:36:c9:b5:15:40;CMTS-MAC=00:90:f0:67:04:00;CM-QOS=1.1;CM-VER=3.1;
    Tue Sep 26 00:24:53 2023(Critical (3))SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=08:36:c9:b5:15:40;CMTS-MAC=00:90:f0:67:04:00;CM-QOS=1.1;CM-VER=3.1;
    Tue Sep 26 00:24:06 2023(Warning (5))MDD message timeout;CM-MAC=08:36:c9:b5:15:40;CMTS-MAC=00:90:f0:67:04:00;CM-QOS=1.1;CM-VER=3.1;
    Tue Sep 26 00:24:06 2023(Critical (3))SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=08:36:c9:b5:15:40;CMTS-MAC=00:90:f0:67:04:00;CM-QOS=1.1;CM-VER=3.1;
    Tue Sep 26 00:24:00 2023(Warning (5))MDD message timeout;CM-MAC=08:36:c9:b5:15:40;CMTS-MAC=00:90:f0:67:04:00;CM-QOS=1.1;CM-VER=3.1;
    Tue Sep 26 00:24:00 2023(Critical (3))SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=08:36:c9:b5:15:40;CMTS-MAC=00:90:f0:67:04:00;CM-QOS=1.1;CM-VER=3.1;
    Mon Sep 25 23:31:45 2023(Notice (6))CM-STATUS message sent. Event Type Code: 24; Chan ID: 193; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 3.;CM-MAC=08:36:c9:b5:15:40;CMTS-MAC=00:90:f0:67:04:00;CM-QOS=1.1;CM-VER=3.1;
    Mon Sep 25 23:26:06 2023(Notice (6))CM-STATUS message sent. Event Type Code: 16; Chan ID: 193; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 3.;CM-MAC=08:36:c9:b5:15:40;CMTS-MAC=00:90:f0:67:04:00;CM-QOS=1.1;CM-VER=3.1;
    Mon Sep 25 23:19:33 2023(Notice (6))CM-STATUS message sent. Event Type Code: 24; Chan ID: 193; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 3.;CM-MAC=08:36:c9:b5:15:40;CMTS-MAC=00:90:f0:67:04:00;CM-QOS=1.1;CM-VER=3.1;
    Mon Sep 25 22:36:04 2023(Notice (6))CM-STATUS message sent. Event Type Code: 16; Chan ID: 193; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 3.;CM-MAC=08:36:c9:b5:15:40;CMTS-MAC=00:90:f0:67:04:00;CM-QOS=1.1;CM-VER=3.1;
    Mon Sep 25 22:27:00 2023(Notice (6))CM-STATUS message sent. Event Type Code: 24; Chan ID: 193; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 3.;CM-MAC=08:36:c9:b5:15:40;CMTS-MAC=00:90:f0:67:04:00;CM-QOS=1.1;CM-VER=3.1;
    Mon Sep 25 20:50:10 2023(Notice (6))CM-STATUS message sent. Event Type Code: 16; Chan ID: 193; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 3.;CM-MAC=08:36:c9:b5:15:40;CMTS-MAC=00:90:f0:67:04:00;CM-QOS=1.1;CM-VER=3.1;
    Mon Sep 25 15:26:40 2023(Notice (6))CM-STATUS message sent. Event Type Code: 24; Chan ID: 193; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 3.;CM-MAC=08:36:c9:b5:15:40;CMTS-MAC=00:90:f0:67:04:00;CM-QOS=1.1;CM-VER=3.1;
    Mon Sep 25 15:19:33 2023(Notice (6))CM-STATUS message sent. Event Type Code: 16; Chan ID: 193; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 3.;CM-MAC=08:36:c9:b5:15:40;CMTS-MAC=00:90:f0:67:04:00;CM-QOS=1.1;CM-VER=3.1;
    Mon Sep 25 14:40:36 2023(Notice (6))DS profile assignment change. DS Chan ID: 32; Previous Profile: ; New Profile: 1 2 3.;CM-MAC=08:36:c9:b5:15:40;CMTS-MAC=00:90:f0:67:04:00;CM-QOS=1.1;CM-VER=3.1;
    Mon Sep 25 14:40:30 2023(Notice (6))TLV-11 - unrecognized OID;CM-MAC=08:36:c9:b5:15:40;CMTS-MAC=00:90:f0:67:04:00;CM-QOS=1.1;CM-VER=3.1;
    Time Not Established(Notice (6))Honoring MDD; IP provisioning mode = IPv6
    Time Not Established(Critical (3))SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=08:36:c9:b5:15:40;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;
    Mon Sep 25 13:51:38 2023(Notice (6))CM-STATUS message sent. Event Type Code: 24; Chan ID: 193; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 3.;CM-MAC=08:36:c9:b5:15:40;CMTS-MAC=00:90:f0:67:04:00;CM-QOS=1.1;CM-VER=3.1;
    Mon Sep 25 13:12:40 2023(Notice (6))CM-STATUS message sent. Event Type Code: 16; Chan ID: 193; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 3.;CM-MAC=08:36:c9:b5:15:40;CMTS-MAC=00:90:f0:67:04:00;CM-QOS=1.1;CM-VER=3.1;
    Mon Sep 25 13:05:08 2023(Notice (6))DS profile assignment change. DS Chan ID: 32; Previous Profile: ; New Profile: 1 2 3.;CM-MAC=08:36:c9:b5:15:40;CMTS-MAC=00:90:f0:67:04:00;CM-QOS=1.1;CM-VER=3.1;
    Mon Sep 25 13:05:02 2023(Notice (6))TLV-11 - unrecognized OID;CM-MAC=08:36:c9:b5:15:40;CMTS-MAC=00:90:f0:67:04:00;CM-QOS=1.1;CM-VER=3.1;
    Time Not Established(Notice (6))Honoring MDD; IP provisioning mode = IPv6
    Time Not Established(Critical (3))SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=08:36:c9:b5:15:40;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;
    Mon Sep 25 13:01:14 2023(Notice (6))DS profile assignment change. DS Chan ID: 32; Previous Profile: ; New Profile: 1 2 3.;CM-MAC=08:36:c9:b5:15:40;CMTS-MAC=00:90:f0:67:04:00;CM-QOS=1.1;CM-VER=3.1;
    Mon Sep 25 13:01:13 2023(Notice (6))TLV-11 - unrecognized OID;CM-MAC=08:36:c9:b5:15:40;CMTS-MAC=00:90:f0:67:04:00;CM-QOS=1.1;CM-VER=3.1;
    Mon Sep 25 13:01:05 2023(Notice (6))Honoring MDD; IP provisioning mode = IPv6
    Mon Sep 25 13:00:58 2023(Critical (3))SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=08:36:c9:b5:15:40;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;
    Mon Sep 25 12:58:41 2023(Warning (5))ToD request sent - No Response received;CM-MAC=08:36:c9:b5:15:40;CMTS-MAC=00:90:f0:67:04:00;CM-QOS=1.1;CM-VER=3.1;
    Mon Sep 25 12:58:39 2023(Critical (3))Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=08:36:c9:b5:15:40;CMTS-MAC=00:90:f0:67:04:00;CM-QOS=1.1;CM-VER=3.1;
  • db3058's avatar
    db3058
    Guide
    Sep 26, 2023

    I misspoke...I know