Tivo has broken broadband [ Edited ]

[MrWolf]

Since getting tivo I have noticed that whenever I turn tivo on, my broadband connection drops - can still access the router, but there is no connection to the internet. When I put tivo back on standby the internet connection recovers within about 5 minutes.

Connected to the cable line I have tivo, broadband (upto 30Mb with superhub), and a v+hd (currently turned off at wall). All are on a similar length of cabling.

logs from the router are:

Time	Priority	Description
Sat May 07 09:02:32 2011	Critical (3)	SYNC Timing Synchronization failure - Failed to receive MAC SYNC frame within time-out period;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
Sat May 07 09:02:27 2011	Critical (3)	UCD invalid or channel unusable;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
Fri May 06 18:05:05 2011	Critical (3)	DHCP FAILED - Requested Info not supported.;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
Fri May 06 18:04:50 2011	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire FEC framing;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.0;CM-VER=3.0;
Fri May 06 18:04:45 2011	Critical (3)	Unicast Ranging Received Abort Response - Re-initializing MAC;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
Fri May 06 18:00:40 2011	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.0;CM-VER=3.0;
Fri May 06 17:21:24 2011	Critical (3)	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.0;CM-VER=3.0;
Fri May 06 14:23:56 2011	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.0;CM-VER=3.0;
Fri May 06 14:23:50 2011	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire FEC framing;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.0;CM-VER=3.0;
Fri May 06 14:22:53 2011	Critical (3)	Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.0;CM-VER=3.0;
Fri May 06 14:22:45 2011	Critical (3)	DHCP FAILED - Request sent, No response;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.0;CM-VER=3.0;
Fri May 06 14:22:17 2011	Critical (3)	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.0;CM-VER=3.0;
Fri May 06 14:22:13 2011	Warning (5)	Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.0;CM-VER=3.0;
Fri May 06 14:22:13 2011	Warning (5)	MDD message timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.0;CM-VER=3.0;
Fri May 06 14:21:40 2011	Critical (3)	No UCDs Received - Timeout;;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.0;CM-VER=3.0;
Fri May 06 00:03:06 2011	Critical (3)	Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
Thu May 05 18:40:53 2011	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
Thu May 05 18:26:14 2011	Critical (3)	DHCP FAILED - Requested Info not supported.;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.0;CM-VER=3.0;
Thu May 05 18:24:13 2011	Critical (3)	Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.0;CM-VER=3.0;
Thu May 05 18:23:41 2011	Critical (3)	Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.0;CM-VER=3.0;
Wed May 04 19:53:53 2011	Critical (3)	Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
Wed May 04 17:59:27 2011	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.0;CM-VER=3.0;
Wed May 04 17:55:39 2011	Critical (3)	No UCDs Received - Timeout;;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
Tue May 03 23:35:10 2011	Critical (3)	REG RSP not received;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
Tue May 03 18:09:47 2011	Critical (3)	DHCP FAILED - Request sent, No response;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.0;CM-VER=3.0;
Mon May 02 14:27:56 2011	Critical (3)	DHCP FAILED - Requested Info not supported.;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.0;CM-VER=3.0;
Mon May 02 14:27:30 2011	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire FEC framing;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.0;CM-VER=3.0;
Sat Apr 30 01:04:07 2011	Critical (3)	Unicast Maintenance Ranging attempted - No response - Retries exhausted;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
Wed Apr 27 10:36:38 2011	Critical (3)	Resetting the cable modem due to docsDevResetNow
Wed Apr 27 08:19:50 2011	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire FEC framing;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
Fri Apr 08 02:15:27 2011	Critical (3)	SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
Time Not Established	Critical (3)	DHCP FAILED - Requested Info not supported.;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.0;CM-VER=3.0;

Startup Procedure Procedure Status Comment Acquire Downstream Channel 314750000 Hz Locked Connectivity State OK Operational Boot State OK Operational Configuration File OK   Security Enabled BPI+

Downstream Channels Lock Status Modulation Channel ID  Max Raw Bit Rate  Frequency Power SNR Docsis/EuroDocsis locked Locked QAM256 204 55616000 Kbits/sec 314750000 Hz 1.2 dBmV 36.2 dB Hybrid Locked QAM256 202 55616000 Kbits/sec 298750000 Hz 2.3 dBmV 38.1 dB Hybrid Locked QAM256 203 55616000 Kbits/sec 306750000 Hz 1.9 dBmV 37.0 dB Hybrid Unlocked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV 0.0 dB Unknown Unlocked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV 0.0 dB Unknown Unlocked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV 0.0 dB Unknown Unlocked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV 0.0 dB Unknown Unlocked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV 0.0 dB Unknown

Upstream Channels Lock Status Modulation Channel ID  Max Raw Bit Rate  Frequency Power Locked ATDMA 1 20480 Kbits/sec 45800000 Hz 58.2 dBmV Unlocked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV Unlocked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV Unlocked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV

Primary Downstream Service Flow Downstream(0) SFID 3490 Max Traffic Rate 33330000 bps Max Traffic Burst 3044 bytes Mix Traffic Rate 0 bps

Primary Upstream Service Flow Upstream(0) SFID 3489 Max Traffic Rate 3333000 bps Max Traffic Burst 8160 bytes Mix Traffic Rate 0 bps Max Concatenated Burst 8160 bytes Scheduling Type Best Effort

[MrWolf]

Small correction, after a while the broadband does start to work again with tivo on - but only if tivo is not access things using its own broadband connection.

[MrWolf]

anyone have any ideas?

[Chris_K]

Hi MrWolf

I have sent you a PM, can you please reply with the information requested and we will look into this for you.

[jb66]

Your upstream is too high, even with the tivo off at the mains the issue would still be there

[Montylad77]

I too am having major problems with my broadband.  I had Tivo installed over a month ago and since then I must lose my connection around 10 times a day.  Never had a problem before so it is definitely caused by Tivo. If I click on Diagnose Connection Problems, it does reconnect my broadband after about a minute but should not be happening so regularly...if at all!  Any idea how to sort?  If not, I am seriously considering just going back to my V+ box and asking for a refund.

[jb66]

The TiVo isn't the cause

[Ray_M]

Hi Montylad77,

Please post your local power levels and logs from your modem configuration pages as I am unable to view them remotely. Please see here for instructions on how to do this if you are unsure.

Regards,

---

Ray Miranda
Help & Support Forum Team

If someone's helped you out say thanks by clicking on the Kudos Star. If someone's solved your problem, why not mark their message as a Helpful Answer? You can also help other users find useful posts by Tagging them with keywords.

If you are new to the forum, please remember to search the forum before posting your question. Please don't send private messages directly to the forum team unless they ask you to, post your issue to the forum first.

[NBS3000]

Hi,

I think I have the same problem (see here) - would you mind sharing how this was resolved.

Thanks! 

[Montylad77]

Hi, With mine, the issue with dropping connection 'mysteriously' stopped! However, over the last month or so it has come back with a vengeance! So annoying! As I said in my original post, this never happened on my V+ box so it must be TiVo! If you find any answers, let me know please. Thanks