Re: USB-Audio Driver (w. BOSE Companion 5)
I confirm the same or similar problem happening using Bose Companion 5 USB
speakers on Vista-SP1 x86 32bit edition.
The problem is best described as intermittent stuttering, from mostly minor
but always present, to sometimes strong 'dropouts', a few times loosing the
USB connection alltogether. Sounds a bit like my tapedeck sounded many years
ago with a dirty tape.
I tried to find any offending driver or anything that could interfere with
the audio driver to no avail. The Vista installation is clean and up-to-date
w. regard Microsoft updates. Disabled the built-in AC97 soundchip in the
Bios, removed all sound related drivers. Removed all special codecs. The
speakers are connected directly to a USB 2.0 port without a hub.
I then tried the Companion 5 speakers under Windows-XP SP2 and Ubuntu Linux
on the same PC hardware (multiboot). Under both these Operating Systems the
Companion 5 speakers perform flawless USB audio, no installation problems of
any kind, no stuttering of any kind, just very perfect sound.
Next I tried an external Soundblaster Audigy 2 NX USB card on Vista,
connecting it with stereo cable to the line input on the Bose speakers. No
stuttering whatsoever occured. Only this way you loose the 5.1 audio, and it
is not so nice looking, since the line input is on the desktop volume control
hockey puck. So the Audigy USB card was able to do good non stuttering USB
audio on Vista!
As far as I can tell the stuttering really is a Vista / Bose specific USB
Audio driver problem.
It seems that the API for the USB audio driver has changed slightly under
Vista as compared to XP, and the driver must actively request / configure
realtime performance from the MSWMM subsystem.
Hoping Bose or Microsoft will release a USB audio driver fix very soon now.
> Hi, reviving this as it seems to be the best forum for my query. I'm
> planning on getting a Bose Companion 5 but have some MAJOR reservations
> given the problems listed above.
> The only reason I've NOT completely dropped the idea is because the USB
> problem above seems to be on PCs running Vista 64bit. As I'm running
> Vista Home Premium 32bit, does that mean this should not be an issue, ie
> is it fully compatible under Vista 32bit?
> Any assistance is greatly appreciated. I'm very impressed with the
> speakers, but don't want to get them if they're gonna be so incompatible
> with Vista....