Strange sound after V9 Update

[bFlat]

Anyone else experience this?

After one of the post V9 updates, I get a total random short 3-5 sec buzzing noise out of the speakers. It almost sounds like some type of warning, but the sound is a static buzzing sound. It happens 1-2 times every hour or so. I've had it happen at highway speeds, slow speed, backing out of my garage, parked and opening a door.

 

[manyarg]

If this happens when listening to FM radio, then yes. This started happening to me too with V9.

 

[bFlat]

If this happens when listening to FM radio, then yes. This started happening to me too with V9.

I have been listening to streaming for the last 2 days and no issues with the sound. I think you are right that it only happens with the radio. I plan to wait for one firmware update before making a service appointment.

 

[BrentF]

I've had exactly the same thing. I believe it's only occurred while using the FM radio.

 

[Dmalsbary]

I have this happening too. I don't know if it is related, but the other day I tried to demo the Christmas Easter egg and it wouldn't start until I switched from radio to streaming.

 

[Boby]

Just received 1 hour ago new update 2018.44..anyone's know what is all about?.. Thanks!

 

[bFlat]

Updated firmware to 2018.46.2

Listened to FM radio for about 4 hours over 2 days and have not heard the buzzing sound yet. Crossing my fingers that this is fixed. Will report back if I hear it again.

 

[Cdhansen83]

I have an issue similar to this but it is with streaming. it almost sounds like it loses signal or buffers for a second, then it's done. But the weird thing is it happens in areas where I have full bars of LTE in the middle of down town San Diego.

 

[jboy210]

I have an issue similar to this but it is with streaming. it almost sounds like it loses signal or buffers for a second, then it's done. But the weird thing is it happens in areas where I have full bars of LTE in the middle of down town San Diego.

Signal strength does not mean the network can more data to your car. If there were a bunch of other people using the network at the same time (watching cat videos no doubt),the available data bandwidth may not be there to get your bits to your car in a timely fashion.

 

[doghousePVD]

I had a lot of 5 bars but no effective communication on ATT before I switched away. Can't wait for Starlink.

 

[ajdelange]

Signal strength does not mean the network can more data to your car. If there were a bunch of other people using the network at the same time (watching cat videos no doubt),the available data bandwidth may not be there to get your bits to your car in a timely fashion.

Actually it does. With lower SNR more packets are received with errors and must be resent and/or transmission speed is lowered to prevent dropped packets. In either case the effective bandwidth goes down.

Now the rest of the statement is true. Even if you have 5 bars the bandwidth you get will be reduced if the network is choked with other traffic.

As to the buzzing in FM mode: That's what an FM radio sounds like when squelch is opened and no signal is present. A guess here is that the new firmware allows the radio to connect to audio system before it has properly tuned it to a channel. Just a guess.

 

[jboy210]

Actually it does. With lower SNR more packets are received with errors and must be resent and/or transmission speed is lowered to prevent dropped packets. In either case the effective bandwidth goes down.

Now the rest of the statement is true. Even if you have 5 bars the bandwidth you get will be reduced if the network is choked with other traffic.

As to the buzzing in FM mode: That's what an FM radio sounds like when squelch is opened and no signal is present. A guess here is that the new firmware allows the radio to connect to audio system before it has properly tuned it to a channel. Just a guess.

A good SNR is a factor, but if the network is saturated, packet collision rates go up, so throughput goes down due to re-transmission and even a huge SNR is not going to help that. More towers and backhaul to carry the load are needed, and AT&Ts network is not know for having an overabundance of either. Maybe 5G will help because of the speed.