On Mon, 11 Jun 2007, Raviraj Bhat wrote: > Hi, > > When we
Who are "we" -- you and who else? > connect an USB keyboard (Dell) and USB speaker to an USB 2.0 hub, > and try to play a wav file, we are not able to hear the song. On the other > hand, when we connect speaker first, play the file and then connect the > keyboard, Things work fine. > > We are using linux-2.6.16.12 kernel. We use sox application to play the > song. > > We would really appreciate if somebody could help us in this regard. It's probably a matter of not having sufficient bandwidth on the USB bus. The keyboard uses some bandwidth and there's not enough left to use the speaker. But if you connect the speaker first then it gets all the bandwidth it needs, and when the music is finished then the keyboard can use what it wants. Bandwidth utilization is improved in later kernels. Try upgrading to 2.6.21. Alan Stern ------------------------------------------------------------------------- This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ _______________________________________________ Linux-usb-users@lists.sourceforge.net To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-users
