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    Bluetooth cutting out on M1330 w/stereo headphones.

    Discussion in 'Dell' started by lindseybp, Apr 14, 2008.

  1. lindseybp

    lindseybp Notebook Enthusiast

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    I've got an M1330 with the bluetooth chip. I just got a pair of motorola S9 stereo bluetooth headphones and paired them with my 1330 tonight. It seems like almost all the time the audio cuts in and out. If I am right on top of the computer it's better but even then it seems like it cuts out when I am surfing the net and a browser loads a different page or something like that. Does anyone have any ideas on how I could get this to stop? I'm assuming it's not the Moto headphones. Any help would be appreciates.

    Lindseybp
     
  2. chelet

    chelet Notebook Deity

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    Are you using wireless when you surf the Net?
    The signals could be interfering with each other.
     
  3. lindseybp

    lindseybp Notebook Enthusiast

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    Yes, I'm surfing wirelessly at the same time. I've got an Intel 4965 wireless card. I can't believe Dell would put a bluetooth card and a wifi card in the same laptop that would cause issues with each other? But then again nothing surprises me these days.
     
  4. lindseybp

    lindseybp Notebook Enthusiast

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    Anybody else have any ideas? I would hat it if I can't use the bluetooth stereo while surfing wirelessly.
     
  5. evenSong

    evenSong Notebook Enthusiast

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    It would be difficult to shield against interference between the two signals without severely limiting the capability of one or both. Waves naturally interfere, although in most cases do not cause major problems. However, having them emitting and receiving in such a close proximity and you're bound to have this happen.

    Do you have a Wireless N card? Those antennas are particularly powerful. I'd call up Dell to see if this is a problem that may be corrected. If not, I'd suggest trying a b/g wireless card. Otherwise, try another bluetooth headset.
     
  6. EdiT808

    EdiT808 Notebook Evangelist

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    From personal experience i dont think the m1330 supports bluetooth stereo aka A2DP. Granted you got it connected my guess it sounds grainy and cuts off a lot. The bluetooth module supports EDR which is enhance data rate. Its the same Bluetooth found on the Iphone although it is 2.0 it doesnt support A2DP aka Bluetooth stereo.

    here is a link some other guys/girls in this forum got it to work
    http://forum.notebookreview.com/showthread.php?t=173403
     
  7. L.Rawlins

    L.Rawlins Notebook Evangelist

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    In your Bluetooth settings have you left the Bluetooth device to automatically scan for new devices every 10-15 minutes, as this, paired with your Wi-Fi card doing much the same thing could cause interference/signal degradation to your sustained audio streaming.

    There should be no need to have the periodic Bluetooth scanning active at all if you're planning on pairing with only a few verifiable devices anyway, which will save your battery too.

    I sometimes experience fleeting signal break-up with my Bluetooth Sonys but it is incredibly rare and I use them at work virtually all day every day with my work notebook at the desk and wandering around the office.

    My advice would be to turn off the 'Discovery' mode completely, and simply search for new devices manually as and when you need to.

    The other thing to consider is whether or not you have a Stereo Bluetooth compliant phone that is actively attempting to establish a connection to your headphones whilst you use them with the notebook. Again, turning off the automatic 'Discovery' mode will help lessen the amount of 'tooth traffic' buzzing around. :)

    Also Lindsey, have a quick look at what Bluetooth services your headphones are actually starting when you connect to the notebook. I have a hunch! :)

    Your S9's are compatable with A2DP (Stereo Bluetooth), Audio Video Remote Control, Hands-free, and Headset (Mono Bluetooth for phone calls) profiles.

    If your connection establishes both headphone (A2DP) and headset profiles simultaneously you will encounter transmission problems. Make sure that 'Headset' does not start automatically when you connect to the notebook at the same time as your headphone one.

    The Bluetooth module option for the M1330 can be spec'd to ship with a stereo headset here. So yes it does.
     
  8. EdiT808

    EdiT808 Notebook Evangelist

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    ahhh interesting however here is the killer. Remember when bluetooth 2.0 came out and it was automatic that it should support A2DP? then apple came along brought out the iphone and said syke! that's my personal experience. My thing is if its 2.0 they should just leave the A2DP profile in so they dont get mix ups like this.