Hi Ahmed, Have you tried with SINGH DEVENDRA-DHGW76 suggestion? I have tried for linux kernel 2.6.22, but the result is same . Also I think I am having problem with Tx instead of Rx because error show __tx_submit:hci0 tx submit failed urb c0552c14 type 3 err -19. I have change the HCI_MAX_ISOC_RX and HCI_MAX_ISOC_TX size to 6 , #define TRANSFER_BUF_SIZE 1536 also tested by varying this values but not successful, It would be great if you share your experience. -- With Regards, Nirav Rabara -- To unsubscribe from this list: send the line "unsubscribe linux-bluetooth" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html