Lost Internet connection daily, need to disconnect coaxial cable and reconnect.

Hi, I have to disconnect coaxial cable to the cable modem, power down, reconnect coaxial cable and power up for the past 5 days, please advise.

following are some info.

coaxial cable connect to modem directly, no splitter.

linksys wifi router connect to modem via ethernet cable.

ARRIS / Motorola SurfBoard SB6141 DOCSIS 3.0 Cable Modem

when connection is lost, the fourth light (i.e. internet connection) is blinking, then the 2nd will blink, then the 3rd will blink and the sequence repeat again and again, finally I have to power down and disconnect the coaxial cable.

modem log:

Time Priority Code Message
Dec 03 2013 06:29:26 6-Notice I401.0 TLV-11 - unrecognized OID;CM-MAC=xxxx;CMTS-MAC=xxxx;CM-QOS=1.1;CM-VER=3.0;
Dec 03 2013 06:29:26 5-Warning Z00.0 MIMO Event MIMO: Stored MIMO=-1 post cfg file MIMO=-1;CM-MAC=xxxx;CMTS-MAC=xxxx;CM-QOS=1.1;CM-VER=3.0;
Jan 01 1970 00:00:15 6-Notice N/A Cable Modem Reboot due to power reset ;CM-MAC=xxxx;CMTS-MAC=xxxx;CM-QOS=1.1;CM-VER=3.0;
Dec 03 2013 06:27:37 3-Critical I02.0 REG RSP not received;CM-MAC=xxxx;CMTS-MAC=xxxx;CM-QOS=1.1;CM-VER=3.0;
Dec 03 2013 06:27:37 4-Error I271.0 T6 Timeout and retries exceeded;CM-MAC=xxxx;CMTS-MAC=xxxx;CM-QOS=1.1;CM-VER=3.0;
Dec 03 2013 06:27:36 3-Critical I251.3 Registration RSP rejected unspecified reason;CM-MAC=xxxx;CMTS-MAC=xxxx;CM-QOS=1.1;CM-VER=3.0;
Dec 03 2013 06:27:36 3-Critical I251.4 Registration RSP rejected message syntax error;CM-MAC=xxxx;CMTS-MAC=xxxx;CM-QOS=1.1;CM-VER=3.0;
Dec 03 2013 06:27:36 6-Notice I401.0 TLV-11 - unrecognized OID;CM-MAC=xxxx;CMTS-MAC=xxxx;CM-QOS=1.1;CM-VER=3.0;
Dec 03 2013 06:27:36 5-Warning Z00.0 MIMO Event MIMO: Stored MIMO=-1 post cfg file MIMO=-1;CM-MAC=xxxx;CMTS-MAC=xxxx;CM-QOS=1.1;CM-VER=3.0;
Dec 03 2013 06:27:12 3-Critical I02.0 REG RSP not received;CM-MAC=xxxx;CMTS-MAC=xxxx;CM-QOS=1.1;CM-VER=3.0;
Dec 03 2013 06:27:11 4-Error I271.0 T6 Timeout and retries exceeded;CM-MAC=xxxx;CMTS-MAC=xxxx;CM-QOS=1.1;CM-VER=3.0;
Dec 03 2013 06:27:11 3-Critical I251.3 Registration RSP rejected unspecified reason;CM-MAC=xxxx;CMTS-MAC=xxxx;CM-QOS=1.1;CM-VER=3.0;
Dec 03 2013 06:27:11 3-Critical I251.4 Registration RSP rejected message syntax error;CM-MAC=xxxx;CMTS-MAC=xxxx;CM-QOS=1.1;CM-VER=3.0;
Dec 03 2013 06:27:11 6-Notice I401.0 TLV-11 - unrecognized OID;CM-MAC=xxxx;CMTS-MAC=xxxx;CM-QOS=1.1;CM-VER=3.0;
Dec 03 2013 06:27:11 5-Warning Z00.0 MIMO Event MIMO: Stored MIMO=-1 post cfg file MIMO=-1;CM-MAC=xxxx;CMTS-MAC=xxxx;CM-QOS=1.1;CM-VER=3.0;
Dec 03 2013 06:26:48 3-Critical I02.0 REG RSP not received;CM-MAC=xxxx;CMTS-MAC=xxxx;CM-QOS=1.1;CM-VER=3.0;
Dec 03 2013 06:26:48 4-Error I271.0 T6 Timeout and retries exceeded;CM-MAC=xxxx;CMTS-MAC=xxxx;CM-QOS=1.1;CM-VER=3.0;
Dec 03 2013 06:26:47 3-Critical I251.3 Registration RSP rejected unspecified reason;CM-MAC=xxxx;CMTS-MAC=xxxx;CM-QOS=1.1;CM-VER=3.0;
Dec 03 2013 06:26:47 3-Critical I251.4 Registration RSP rejected message syntax error;CM-MAC=xxxx;CMTS-MAC=xxxx;CM-QOS=1.1;CM-VER=3.0;
Dec 03 2013 06:26:47 6-Notice I401.0 TLV-11 - unrecognized OID;CM-MAC=xxxx;CMTS-MAC=xxxx;CM-QOS=1.1;CM-VER=3.0;