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CM1100 Comcast Xfinity Gigabit Speed Issues
Upgraded to the gigabit plan but can't get past 250Mbits Down and 45Mbits Up. Have called Comcast to have the modem provisioned for Gigabit services. Tested with a laptop directly connected and a cellphone connected with wireless AC and averaging 190Mbits down. On the Cable connection status screen I noticed that Channel 32 is not locked in and I'm guessing this is the issue but not sure how to fix. Coax connection is a straight connection to the service from outside with no splitters. Comcast tech noted on install that he didn't see anything wrong with the signal levels. Firmware version is noted at V2.01.02. Any help would be greatly appreciated. Thanks!
Starting Frequency Startup Procedure Procedure Status Comment Acquire Downstream Channel 657000000 Hz Locked Connectivity State OK Operational Boot State OK Operational Security Enable BPI+ IP Provisioning Mode Honor MDD IPv6 only Downstream Bonded Channels Channel Lock Status Modulation Channel ID Frequency Power SNR / MER Unerrored Codewords Correctable Codewords Uncorrectable Codewords 1 Locked QAM256 32 657000000 Hz 7.2 dBmV 41.5 dB 3610574209 0 0 2 Locked QAM256 1 465000000 Hz 9.5 dBmV 43.6 dB 3609464594 0 0 3 Locked QAM256 2 471000000 Hz 9.6 dBmV 43.6 dB 3609469116 0 0 4 Locked QAM256 3 477000000 Hz 9.7 dBmV 43.6 dB 3609467422 0 0 5 Locked QAM256 4 483000000 Hz 9.6 dBmV 43.5 dB 3609470412 0 0 6 Locked QAM256 5 489000000 Hz 9.4 dBmV 43.4 dB 3609474499 0 0 7 Locked QAM256 6 495000000 Hz 9.3 dBmV 43.3 dB 3609478070 0 0 8 Locked QAM256 7 507000000 Hz 9.0 dBmV 43.2 dB 3609482073 0 0 9 Locked QAM256 8 513000000 Hz 9.0 dBmV 43.3 dB 3609488956 0 0 10 Locked QAM256 9 519000000 Hz 8.9 dBmV 43.4 dB 3609493828 0 0 11 Locked QAM256 10 525000000 Hz 8.6 dBmV 43.3 dB 3609497890 0 0 12 Locked QAM256 11 531000000 Hz 8.6 dBmV 43.2 dB 3609501484 0 0 13 Locked QAM256 12 537000000 Hz 8.4 dBmV 43.2 dB 3609504988 0 0 14 Locked QAM256 13 543000000 Hz 8.2 dBmV 43.3 dB 3609508739 0 0 15 Locked QAM256 14 549000000 Hz 8.3 dBmV 43.1 dB 3609512949 0 0 16 Locked QAM256 15 555000000 Hz 8.3 dBmV 43.2 dB 3609516134 0 0 17 Locked QAM256 16 561000000 Hz 8.2 dBmV 43.0 dB 3609519970 0 0 18 Locked QAM256 17 567000000 Hz 7.9 dBmV 42.9 dB 3609523961 0 0 19 Locked QAM256 18 573000000 Hz 7.8 dBmV 42.8 dB 3609527861 0 0 20 Locked QAM256 19 579000000 Hz 7.8 dBmV 42.7 dB 3609530960 0 0 21 Locked QAM256 20 585000000 Hz 7.7 dBmV 42.6 dB 3609535218 0 0 22 Locked QAM256 21 591000000 Hz 7.9 dBmV 42.6 dB 3609539477 0 0 23 Locked QAM256 22 597000000 Hz 7.7 dBmV 42.3 dB 3609543069 0 0 24 Locked QAM256 23 603000000 Hz 7.7 dBmV 42.3 dB 3609546617 0 0 25 Locked QAM256 25 615000000 Hz 7.6 dBmV 41.9 dB 3609553265 0 0 26 Locked QAM256 26 621000000 Hz 7.7 dBmV 42.0 dB 3609557135 0 0 27 Locked QAM256 27 627000000 Hz 7.6 dBmV 42.0 dB 3609560776 0 0 28 Locked QAM256 28 633000000 Hz 7.4 dBmV 41.8 dB 3609564481 0 0 29 Locked QAM256 29 639000000 Hz 7.4 dBmV 41.8 dB 3609567802 0 0 30 Locked QAM256 30 645000000 Hz 7.6 dBmV 41.8 dB 3609571989 0 0 31 Locked QAM256 31 651000000 Hz 7.7 dBmV 41.8 dB 3609575737 0 0 32 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0 0 Upstream Bonded Channels Channel Lock Status Modulation Channel ID Frequency Power 1 Locked ATDMA 49 35800000 Hz 47.5 dBmV 2 Locked ATDMA 50 29400000 Hz 47.8 dBmV 3 Locked ATDMA 51 23000000 Hz 47.8 dBmV 4 Locked ATDMA 52 16600000 Hz 47.8 dBmV 5 Not Locked Unknown 0 0 Hz 0.0 dBmV 6 Not Locked Unknown 0 0 Hz 0.0 dBmV 7 Not Locked Unknown 0 0 Hz 0.0 dBmV 8 Not Locked Unknown 0 0 Hz 0.0 dBmV Downstream OFDM Channels Channel Lock Status Modulation / Profile ID Channel ID Frequency Power SNR / MER Active Subcarrier Number Range Unerrored Codewords Correctable Codewords Uncorrectable Codewords 1 Locked 0, 1, 255 33 690000000 Hz 7.8 dBmV 39.3 dB 1228 ~ 2867 7401020580 7219863721 0 2 Not Locked 0, 255 0 0 Hz 5.4 dBmV 0.0 dB 0 ~ 4095 0 0 0 Upstream OFDMA Channels Channel Lock Status Modulation / Profile ID Channel ID Frequency Power 1 Not Locked Unknown 0 0 Hz 0 dBmV 2 Not Locked Unknown 0 0 Hz 0 dBmV
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Frequency start Value This field below allows you to modify the frequency the cable modem start with its scan during initialization and registration. Enter the new start frequency and restart the cable modem for it to take effect. Starting Frequency Startup Procedure Procedure Status Comment Acquire Downstream Channel 615000000 Hz Locked Connectivity State OK Operational Boot State OK Operational Security Enable BPI+ IP Provisioning Mode Honor MDD IPv6 only Downstream Bonded Channels Channel Lock Status Modulation Channel ID Frequency Power SNR / MER Unerrored Codewords Correctable Codewords Uncorrectable Codewords 1 Locked QAM256 25 615000000 Hz 7.6 dBmV 41.8 dB 27177434 40 167 2 Locked QAM256 1 465000000 Hz 9.6 dBmV 43.6 dB 25410356 0 0 3 Locked QAM256 2 471000000 Hz 9.7 dBmV 43.5 dB 30226291 907 2881 4 Locked QAM256 3 477000000 Hz 9.8 dBmV 43.2 dB 30223685 835 2959 5 Locked QAM256 4 483000000 Hz 9.6 dBmV 43.4 dB 30250828 907 2912 6 Locked QAM256 5 489000000 Hz 9.5 dBmV 43.3 dB 30283252 932 2944 7 Locked QAM256 6 495000000 Hz 9.4 dBmV 43.2 dB 30307841 854 2912 8 Locked QAM256 7 507000000 Hz 9.1 dBmV 43.2 dB 30329342 808 2467 9 Locked QAM256 8 513000000 Hz 9.1 dBmV 43.3 dB 30346508 792 2535 10 Locked QAM256 9 519000000 Hz 9.0 dBmV 43.2 dB 30371683 786 2461 11 Locked QAM256 10 525000000 Hz 8.7 dBmV 43.1 dB 30389105 754 2397 12 Locked QAM256 11 531000000 Hz 8.7 dBmV 43.1 dB 25658183 154 674 13 Locked QAM256 12 537000000 Hz 8.5 dBmV 43.0 dB 30425189 824 2400 14 Locked QAM256 13 543000000 Hz 8.3 dBmV 43.0 dB 30436661 774 2418 15 Locked QAM256 14 549000000 Hz 8.4 dBmV 43.2 dB 30449054 822 2400 16 Locked QAM256 15 555000000 Hz 8.4 dBmV 43.1 dB 30448564 761 2384 17 Locked QAM256 16 561000000 Hz 8.3 dBmV 43.0 dB 30459578 760 2336 18 Locked QAM256 17 567000000 Hz 8.1 dBmV 42.7 dB 30472343 761 2396 19 Locked QAM256 18 573000000 Hz 7.9 dBmV 42.5 dB 30471376 753 2497 20 Locked QAM256 19 579000000 Hz 7.9 dBmV 42.7 dB 30479338 784 2445 21 Locked QAM256 20 585000000 Hz 7.9 dBmV 42.7 dB 30475012 813 2439 22 Locked QAM256 21 591000000 Hz 8.0 dBmV 42.6 dB 30482387 772 2509 23 Locked QAM256 22 597000000 Hz 7.8 dBmV 42.3 dB 30495215 800 2511 24 Locked QAM256 23 603000000 Hz 7.8 dBmV 42.1 dB 30501824 852 2472 25 Locked QAM256 24 609000000 Hz 7.7 dBmV 42.1 dB 30503443 792 2587 26 Locked QAM256 27 627000000 Hz 7.7 dBmV 41.9 dB 30516739 756 2505 27 Locked QAM256 28 633000000 Hz 7.5 dBmV 41.6 dB 30523226 789 2492 28 Locked QAM256 29 639000000 Hz 7.5 dBmV 41.7 dB 30528597 780 2470 29 Locked QAM256 30 645000000 Hz 7.7 dBmV 41.7 dB 30538671 841 2462 30 Locked QAM256 31 651000000 Hz 7.8 dBmV 41.6 dB 30547677 788 2485 31 Locked QAM256 32 657000000 Hz 7.3 dBmV 41.4 dB 30532732 782 2482 32 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0 0 Upstream Bonded Channels Channel Lock Status Modulation Channel ID Frequency Power 1 Locked ATDMA 49 35800000 Hz 47.5 dBmV 2 Locked ATDMA 50 29400000 Hz 48.0 dBmV 3 Locked ATDMA 51 23000000 Hz 48.0 dBmV 4 Locked ATDMA 52 16600000 Hz 48.0 dBmV 5 Not Locked Unknown 0 0 Hz 0.0 dBmV 6 Not Locked Unknown 0 0 Hz 0.0 dBmV 7 Not Locked Unknown 0 0 Hz 0.0 dBmV 8 Not Locked Unknown 0 0 Hz 0.0 dBmV Downstream OFDM Channels Channel Lock Status Modulation / Profile ID Channel ID Frequency Power SNR / MER Active Subcarrier Number Range Unerrored Codewords Correctable Codewords Uncorrectable Codewords 1 Locked 0, 1, 255 33 690000000 Hz 7.9 dBmV 39.3 dB 1228 ~ 2867 50453804 49371241 0 2 Not Locked 0, 255 0 0 Hz 5.5 dBmV 0.0 dB 0 ~ 4095 0 0 0 Upstream OFDMA Channels Channel Lock Status Modulation / Profile ID Channel ID Frequency Power 1 Not Locked Unknown 0 0 Hz 0 dBmV 2 Not Locked Unknown 0 0 Hz 0 dBmV Current System Time: Sat Jun 08 17:19:04 2019
Comcast just came out to check everything and said my signal was great - looks like I now have uncorrectables and the channel to channel ID lists has changed a bit, but not getting great speeds. Checked on phone with wireless AC about 8 feet from the wifi and got 171 Mbits download, 42.8Mbits Upload with 38ms ping. Below is the new status from the modem.