On Oct 18, 7:19*am, skylightdi...@comcast.net wrote:
> I am suffering from the same symptoms but with microsoft Lifechat
> lx3000 which I think uses the same usb audio driver. My motherboard is
> an MSI k9n sli platinum with an athlon 64 x2 6000+. Have same problem
> on another computer with the exact same setup. So far I have had no
> answers either Any help at all would be appreciated.
>
> On Sun, 12 Oct 2008 00:47:23 -0700 (PDT), tido <tijd...@gmail.com>
> wrote:
>
> >On Oct 11, 9:30*pm, Paul Montgomery <i.m.nonnym...@NOSPAMgmail.com>
> >wrote:
> >> On Sat, 11 Oct 2008 12:01:11 -0700 (PDT), tido <tijd...@gmail.com>
> >> wrote:
>
> >> >On Oct 10, 11:28*pm, Paul Montgomery <i.m.nonnym...@NOSPAMgmail.com>
> >> >wrote:
> >> >> On Fri, 10 Oct 2008 14:07:48 -0700 (PDT), tido <tijd...@gmail.com>
> >> >> wrote:
>
> >> >> >It seems the 'BoseUSB audio' driver is released by Microsoft.
> >> >> >So should I talk to Microsoft orBoseto get this fixed??
>
> >> >>Bose. *DefinitelyBose.
>
> >> >Today I had an opportunity to connect theBoseCompanion 5 speakers to
> >> >another PC, also running Vista Ultimate.
> >> >No fluttering of any kind occurred, just nice perfect sound...
>
> >> >PC1, that has fluttering sound under Vista Ultimate, uses an Asus A8N-
> >> >SLI motherboard (nForce4, Athlon64 X2 4400+)
> >> >PC2, that has good sound under Vista Ultimate, uses an Asus P5N32E-SLI
> >> >motherboard (nForce680i, Core2 Duo E6600)
> >> >Both systems have 2Gig of memory.
>
> >> >Could the difference in behavior of theBoseUSB audio be related to
> >> >the chipset or CPU?
>
> >> >Are there any known problems with the nForce4 chipset or Athlon64 CPU
> >> >that might explain it?
>
> >> >Rem
>
> >> You initially asked:
>
> >> >It seems the 'BoseUSB audio' driver is released by Microsoft.
> >> >So should I talk to Microsoft orBoseto get this fixed??
>
> >> I answered:
>
> >> >Bose. *DefinitelyBose.
>
> >> Which part of my answer did you find difficult to understand?- Hide quoted text -
>
> >> - Show quoted text -
>
> >Your answer was very clear indeed, my apologies if it seems I ignored
> >it.
> >Please read below why I extended this thread. I do intend to askBose
> >to resolve once the case is more clear.
>
> >After the additional testing I performed yesterday the issue now seems
> >related not just to Vista and theBoseUSB audio driver, but to
> >include the motherboard as well, which seems relevant.
>
> >Without that information the guys atBoseprobably will have a hard
> >time to resolve, and conclude they can't reproduce the issue. A good
> >analysis is often is more than 3/4 of the solution...
>
> >Confirmation from anyone describing a similar problem of stuttering
> >audio usingBoseCompanion 5 USB speakers on Vista and using an
> >nForce4 Mobo would make the case stronger I guess. I haven't found too
> >many similar problems clearly described so far.
>
> >There is however quite some talk about latency problems with the
> >nForce4 chipset, affecting the PCI bus. However USB audio should not
> >be affected, as it is supposed to be connected to the PCIe bus. This
> >is still puzzling me.
>
> >Any confirmation, additional background info and hints really
> >appreciated.
Thanks for confirming this issue.
Maybe I've now found a root cause AND a workaround for the issue of
stuttering audio using the Bose USB audio driver.
It seems that in my case the stuttering is related to AMD's Cool 'n
Quiet feature, especially when the CPU clock frequency and voltage is
dynamically changed depending on the CPU load.
Download and install AMD's Power monitor tool v1.2.3 to view the
actual clock frequency, but also to select a power scheme. The
availaible schemes are 1: High performance, 2: Power save and
3:Balanced.
Download here:
http://www.amd.com/us-en/assets/cont...onitor_123.zip
Actually 1: means full clock 2200MHz @ 1.35V, 2: means clock of
1000MHz @ 1.1V while 3: means dynamically variable clock in between
these values.
Selecting either the High performance OR the Power save scheme the
audio is perfect, and not stuttering at all, even at 100% CPU load!
Only in dynamic clock mode scheme "Balanced" the audio is stuttering.
The USB audio driver apparently gets confused by the quickly changing
clock...
So it seems the combination of Windows Vista AND an AMD CPU with Cool
'n Quiet enabled for dynamically adjusting the CPU clock AND a Bose
USB audio driver for the Companion 5 speakers is exhibiting the
stuttering audio problem.
Note the problem does not occur on WinXP or Linux on the same
hardware.
Switching the clock to a stable situation completely resolves the
issue for me.
Would really appreciate some independent confirmation, to get a
stronger case to ask Bose to improve their USB audio driver.
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