I have no idea what to pin this on, and I'm going a little nuts ...

I have these A2DP speakers: http://www.amazon.com/Logitech-Wireless-USB-Speaker-Z515/dp/B003VAHYXW

they're great. I got a deal on them and they didn't come with the USB receiver, but I figured, hey, I have a cheap bluetooth dongle, no big deal.

They work fine (with a few ms of latency) right after being paired/installed, but after giving them a rest for a little while (i.e. waiting a couple hours without playing any audio, or letting the machine suspend, etc.) when I try to use them again, there's about 5-10 seconds of latency on the audio (this gets pretty ridiculous pretty quickly), and there's nothing I can do to fix this other than unpair, restart the machine, and re-pair. I've tried newer CSR drivers, I've tried restarting the Windows Audio and BT services; nothing fixes this apart from re-starting and re-pairing.

I have a suspicion that I just have a junky BT dongle, but I used to have an even junkier one that had issues with re-pairing a headset after I'd shut it off; this one has no problem with the headset, just massive A2DP latency. Are there entire tiers of "crappy bluetooth dongle" that I'm currently slowly climbing through, or am I missing some easy software solution?

  • It is most likely your BT dongle... Windows support (even in 8) still sucks for audio devices especially bluetooth. I have had many problems with bluetooth and this is one of them. It more often than not is related to the dongle than the device. Buy a high rated known-name brand adapter. – CenterOrbit Dec 1 '12 at 2:57
  • thanks. I think I've actually figured out a reproducible set of steps for fixing them without restarting (it involves unplugging the dongle, restarting services, then plugging it back in) ... will let you know. I got this one in a two pack and put the other in my Ubuntu machine; will see if they have the same issues. – serilain Dec 1 '12 at 3:34

well, confirmed I can fix it by turning the speaker off, re-plugging the dongle and then running:

net stop hfgservice
net start hfgservice
net stop audiosrv
net stop audioendpointbuilder
net start audioendpointbuilder
net start audiosrv

then turning the speaker back on. needless to say, this is a bit tedious (though having the BT dongle in a front USB port within arm's reach helps), and I ought to finally get a more expensive dongle so this isn't necessary.

  • 1
    Hi, hope you can still read and answer this. Have you ever solved this without unplugging? Does buying a better dongle solve this issue? – Sid Dec 9 '15 at 16:26

Your Answer

By clicking "Post Your Answer", you acknowledge that you have read our updated terms of service, privacy policy and cookie policy, and that your continued use of the website is subject to these policies.

Not the answer you're looking for? Browse other questions tagged or ask your own question.