Panic after plugging in an mp3 usb player, 5.4-PRERELEASE

Radek Kozlowski radek at
Wed Mar 23 09:19:52 PST 2005

On Tue, Mar 22, 2005 at 03:28:06PM +0100, Marwan Burelle wrote:
> On Tue, Mar 22, 2005 at 02:48:37PM +0100, Radek Kozlowski wrote:
> > My 5.4-PRERELEASE/i386 as of today panics almost immediately after
> > plugging in an mp3 usb player (Qware BeatZkey! Pro 512MB). I don't have
> > device ehci in the kernel.
> It's a common problem with some USB devices. You have to add some
> quirk in sys/cam/scsi/scsi_da.c for your player.
> See more information at :
> I've got the same problem with mine, adding the rigth quirk
> (DA_Q_NO_SYNC_CACHE for me) solves it. The difficult part is to think
> out what to put to capture your player (and not the others ... )

Adding DA_Q_NO_SYNC_CACHE did the trick, thanks for the tip!


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