From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Subject: Re: [Bluez-devel] hci_acl_tx_to: hci0 ACL tx timeout From: Marcel Holtmann To: James Cameron Cc: BlueZ Mailing List In-Reply-To: <20040630130948.GJ30504@hp.com> References: <20040630112137.GE30504@hp.com> <1088595657.4540.19.camel@pegasus> <20040630120249.GH30504@hp.com> <1088599419.4540.24.camel@pegasus> <20040630130948.GJ30504@hp.com> Content-Type: text/plain Message-Id: <1088601709.4540.28.camel@pegasus> Mime-Version: 1.0 Sender: bluez-devel-admin@lists.sourceforge.net Errors-To: bluez-devel-admin@lists.sourceforge.net List-Unsubscribe: , List-Id: List-Post: List-Help: List-Subscribe: , List-Archive: Date: Wed, 30 Jun 2004 15:21:49 +0200 Hi James, > > I really think this is buggy hardware in the USB dongle or in the USB > > host controller. Maybe it is also only a software problem and related to > > the USB subsystem. I don't know. > > Well, tell me what to try to determine where the cause is. Surely it > should be possible to instrument the kernel functions to gather more > information about the problem? Then we can say "yes, it's the > hardware", or something else. you can try to change the number of max bulk urb's to have 2 on rx and 2 on tx. May this helps (drivers/bluetooth/hci_usb.c). Or disable CONFIG_BT_HCIUSB_SCO so no USB bandwith is consumed for ISOC transfers. > > If it is CSR based you can try "hciconfig hci0 revision". > > hci0: Type: USB > BD Address: 00:02:72:01:E5:FF ACL MTU: 192:8 SCO MTU: 64:8 > HCI 16.4 > Chip version: BlueCore02 > Max key size: 56 bit > SCO mapping: HCI > > Does that help? (any good?) This chip should actually work fine. Regards Marcel ------------------------------------------------------- This SF.Net email sponsored by Black Hat Briefings & Training. Attend Black Hat Briefings & Training, Las Vegas July 24-29 - digital self defense, top technical experts, no vendor pitches, unmatched networking opportunities. Visit www.blackhat.com _______________________________________________ Bluez-devel mailing list Bluez-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bluez-devel