Return-Path: Date: Tue, 07 Jul 2009 10:47:54 +0900 From: Chan-Yeol Park Subject: Sony Erricson Headset compatibility Problem. To: 'Marcel Holtmann' Cc: linux-bluetooth@vger.kernel.org Message-id: <001301c9fea4$f1bb10b0$d5313210$%park@samsung.com> MIME-version: 1.0 Content-type: text/plain; charset=us-ascii Sender: linux-bluetooth-owner@vger.kernel.org List-ID: Hi, Marcel BlueZ Wiki site the following is written. The Sony Ericsson HBH-DS970 and HBH-DS980 are not compliant with the bluetooth spec. Currently, they do not work well with bluez, but a workaround is in development. http://wiki.bluez.org/wiki/MotorolaHBHDS9x0 As far as I know, BlueZ wiki site was used for BlueZ 3.xx However even if I use with BlueZ 4.44(latest), they do not work well.. If you know the workaround your site mentioned , could you explain that for me? What I found is below. After HFP RFCOMM connection and 10 seconds later, A2DP session is so slow.. MTU is so small and their respond is too late. I guess that in case of another phone, it's no problem because their connections(HFP,A2DP)are made simultaneously. However in BlueZ case HFP,A2DP connection is separated. As a result it takes more time to connect stereo Headset A2DP service than another device. Regards Chanyeol