Comcast XFINITY → Schaumburg, IL - Lost the multi-channel upstream

My modem was rebooted overnight, and I lost the upstream bonding. Worse, it's now on the 32QAM channel. Even more interesting, it's now using 4 new frequencies for the downstream.
It used to be 693, 699, 705, and 711. Now it's 651, 657, 663, 693.

Well, unfortunately mine has also reverted back to 1 Upstream Channel. I didn't reboot as you did.

I didn't manually reboot it. From the logs, there were 2 reboots. The first around 2:07am, and the other around 4:41. Probably due to Comcast shifting the downstream channels around.

Looking at my log today, it appears that my modem rebooted sometime after 3 am.

Just remember that the modem's log does NOT take daylight savings into effect, so you need to add one hour to the time.

It's hard to tell anyway, because the time didn't sync after the T4 and other entries till much later.

Jul 14 2011 08:12:58 3-Critical R02.0 No Ranging Response received - T3 time-out;CM-MAC=00:23:74:f1:ae:8a;CMTS-MAC=00:01:5c:24:7e:8b;CM-QOS=1.1;CM-VER=3.0;
Jan 01 1970 00:06:41 5-Warning R09.0 B-INIT-RNG Failure - Retries exceeded;CM-MAC=00:23:74:f1:ae:8a;CMTS-MAC=00:01:5c:24:7e:8b;CM-QOS=1.1;CM-VER=3.0;
Jan 01 1970 00:06:38 3-Critical R02.0 No Ranging Response received - T3 time-out;CM-MAC=00:23:74:f1:ae:8a;CMTS-MAC=00:01:5c:24:7e:8b;CM-QOS=1.1;CM-VER=3.0;
Jan 01 1970 00:03:59 5-Warning R09.0 B-INIT-RNG Failure - Retries exceeded;CM-MAC=00:23:74:f1:ae:8a;CMTS-MAC=00:01:5c:24:7e:8b;CM-QOS=1.1;CM-VER=3.0;
Jan 01 1970 00:03:40 3-Critical R02.0 No Ranging Response received - T3 time-out;CM-MAC=00:23:74:f1:ae:8a;CMTS-MAC=00:01:5c:24:7e:8b;CM-QOS=1.1;CM-VER=3.0;
Jan 01 1970 00:00:12 6-Notice Cable Modem Reboot due to T4 timeout ;CM-MAC=00:23:74:f1:ae:8a;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.0;
Jul 14 2011 03:04:16 3-Critical R04.0 Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=00:23:74:f1:ae:8a;CMTS-MAC=00:01:5c:24:7e:8b;CM-QOS=1.1;CM-VER=3.0;
Jul 14 2011 03:04:02 3-Critical T05.0 SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=00:23:74:f1:ae:8a;CMTS-MAC=00:01:5c:24:7e:8b;CM-QOS=1.1;CM-VER=3.0;

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