Contributor
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33 Messages
Netgear CM1150v modem needs to be rebooted everyday or it goes very slow
Since last week I have been having internet connectivity problems. I do not lose internet signal but it goes so slow I cannot do anything. This happens on all my wifi devices and wired PCs. I am running a Netgear CM1150v Modem and a Linksys WRT32x router. If I reboot the router the issue does not get fixed. When I reboot the modem, my speeds go back to normal and it works for maybe 12-24hrs until it happens again. Xfinity shows no service issues in my area.
I run a 1.2gb service and usually get 800-900down and 40 up. When the issue happens I cannot even run a speed test its so slow.
I have had this modem and router combo since 2019 without issue. All coax and the 1 splitter I use were new since 2019 as well. Nothing has changed with the setup and has been working fine until recently. I do not think this is a service issue but what should I check to make sure its not? I believe its a modem issue but do not want to buy a new modem unless I absolutely have to.
BruceW
Gold Problem Solver
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26.2K Messages
2 years ago
Perhaps not the cause of the problem, but you should be aware that the CM1150V is not approved by Comcast for use with Gigabit service. See https://www.xfinity.com/support/devices ("Wired Download Speed: Up to 948 Mbps"). The device should be replaced with one approved for that speed tier, or the speed tier should be dialed back to one that is in the approved range for that device.
If you want to troubleshoot this yourself, please see Internet Troubleshooting Tips. If you still need help, please post the following information from your modem from http://192.168.100.1:
If you can't find the problem or you'd rather have Comcast take care of it, call them at the phone number on your bill or 1-800-Comcast, or use one of the options on https://www.xfinity.com/support/contact-us/. It's not likely they can fix the problem remotely. If not, insist they send a tech out to identify the cause and correct it.
If the tech finds bad coax, splitters, amplifiers, or connections in your home (even if Comcast originally supplied them) you'll probably have to pay for the visit ($70-$100) unless you have their Service Protection Plan ( https://www.xfinity.com/support/articles/service-protection-plan, closed to customers that don't already have it). If the trouble is due to a faulty Comcast rental device or anything outside your home you shouldn't be charged.
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Juiced46
Contributor
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33 Messages
2 years ago
Here is a screenshot of the event log and the power levels currently as its acting up.
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Juiced46
Contributor
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33 Messages
2 years ago
Commenting here as I hit reply in the last response.
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BruceW
Gold Problem Solver
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26.2K Messages
2 years ago
The signals were in spec at that moment, but the event log indicates a problem. Suggest you have Comcast send out a premise tech, although they may give you grief for the device/speed tier mismatch. Good luck!
Please be aware that there are 2 kinds of responses in this Forum: Replies and Comments. When you Comment on a post by scrolling down to "Comment on this post here...", I am notified of your response. But if you select Reply, I am NOT notified and may not be aware of your response.
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Juiced46
Contributor
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33 Messages
2 years ago
This morning it got even worse. Could barely do anything wired or wireless it was so slow. Tried all trouble shooting that I could, checking all connections splitters, rebooting etc. Decided to bite the bullet and pick up a Netgear CM2050v. So far so good. Speeds are back and consistent. Need to give it a few hours to see if it stays this way.
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