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Solved
CM1000 Xfinity issues
I am quite frustrated at this point. I had a CM600 modem to support Comcast's Extreme 150 service. I've had it for a few years and was consistently getting 160 to 170mbps speed from it. About thre...
Well it is finally fixed. The tech showed up today and I showed him the two frequencies that were having the problem. He checked outside, and then at the tap. He came into the house and said he needed to call a bucket truck in to fix it. I got a recorded call from Comcast that they were working to fix the issue. I got a second call an hour later that the issue was fixed. I ran a speed test and got a consistent 160mbps (yay!). I used the reset button on the modem and let it re-provision. All the signal/noise and power levels were good and there were no uncorrectable codewords. They didn't tell me what they fixed, but at long last, it is fixed.
this speed issue is not caused by CM1000 but rather its a issue on Comcast side and it is related to the Arris CMTS that needs to be updated with patches to fix the problem. We need to know how many users this is affecting so we can take this data to Comcast push them to make the fix. So more people posting they are having the issue the better for me to pass to our team to pressure comcast.
Thanks
DarrenM
I have been conveying that to Xfinity Comcast since last year and it falls on to deaf ears...................
So I have a cm1000 modem also my problem is vudu and apple tv both hang on trying to load movies.
Similar issue here. I have a CM600 that is capable of gigabit speed. I recently switched from Blast to extreme 150. I'm getting between 80-90Mbps most of the time. The CM600 has the latest firmware. After troubleshooting 4 times with their tech support I asked them to send someone to my house. They said everything looked good but they changed out the line that goes from the house to the pedestal box. I still get the same speed. I have an extra CM600 and a SB modem, don't recall model right now. I'm thinking of swapping out the cm for the other cm and testing. This is really aggravating.
For me its not the hardware itself since I have tried all the brands and same results. It may be firmware including the Arris OFMDA which we cannot do anything to change. My specs look good on the modem interface, but I still get up to a million Uncorrectable Codewords daily. Comcast has changed lines and anything else they can guess at trying. After that doesn't work, they say they are checking the whole area for neighbors that are causing noise. You ask them to get back to you when they find the fix, and then you never hear from them again until you open a case again with the main office and start the vicious cycle all over again. Monopolies are a bad thing...............they quit caring or trying because the money keeps coming in. I send them screen shots when the drops and high pings start up with a command prompt and the modem interface at the same time so they can see these things with their own eyes.