Return-Path: Message-ID: <4939BB42.1080607@slackdot.org> Date: Fri, 05 Dec 2008 18:37:38 -0500 From: "Rob \"Deker\" Dekelbaum" MIME-Version: 1.0 To: BlueZ development , steve@sparta.com Subject: [Bluez-devel] Continued SCO audio issues... Reply-To: BlueZ development List-Id: BlueZ development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Errors-To: bluez-devel-bounces@lists.sourceforge.net I posted a while back about having some issues getting SCO audio to work on some Compulab em-x270 boards. Well, we're still not there, but we've tried a lot more things. I'm going to describe the problem in some more detail now in the hopes that somebody here can help point me in a direction to get this working. Symptoms: - Everything involved (bt headset, ALSA, aplay/mplayer/pulseaudio, etc) seems to think everything is working. - No sound comes out of the headset. We hear a hissing from the headset during actual audio playback (or when I have pulseaudio talking to it via 'module-alsa-sink' and the sink is not suspended). Config(s) Tested: - Kernels: 2.6.23, 2.6.26, 2.6.27 - Bluez: 3.26, 3.36, 4.12, 4.18 - ALSA drivers: as shipped w/ kernels above We've been through about every possible combination of the above. We've tried hci_usb and btusb. We've tested with 3 models of bt headset and 2 development boards. For some reason, the ONLY place I can make SCO audio work is under a stock Ubuntu 8.10 (which uses Bluez 4.12, kernel 2.6.27, and ALSA 1.0.17 for the record). I'm stumped. Here is some sample output from various pieces as we try to play a file. Right now we're using Bluez 3.36 (getting 4.x running on this platform was a bit of a PITA and was somewhat unstable so we backed out to what currently ships with openembedded) We've tried with separate USB dongles (using the same chipset, that works under Ubuntu 8.10) so it's not the onboard BT chipset... # hciconfig hci0 version hci0: Type: USB BD Address: 00:02:5B:00:A5:A5 ACL MTU: 310:10 SCO MTU: 64:8 HCI Ver: 2.0 (0x3) HCI Rev: 0xc5c LMP Ver: 2.0 (0x3) LMP Subver: 0xc5c Manufacturer: Cambridge Silicon Radio (10) # hciconfig hci0 revision hci0: Type: USB BD Address: 00:02:5B:00:A5:A5 ACL MTU: 310:10 SCO MTU: 64:8 Unified 21e Chip version: BlueCore4-ROM Max key size: 128 bit SCO mapping: PCM ~/.asoundrc: pcm.bt { type bluetooth device 00:0B:2E:D5:27:DA profile voice } pcm.rbt { type plug slave { pcm bt } } /etc/bluetooth/audio.conf: [General] SCORouting=PCM [Headset] HFP=false Pertinent output of "hcid -n -d" (this is what happens when I actually try to play audio with "aplay -D bt -f S16_LE test.wav". Yes, the test wavfile is 8Khz S16_LE PCM WAV audio): hcid[1383]: Accepted new client connection on unix socket (fd=22) hcid[1383]: Audio API: received BT_GETCAPABILITIES_REQ hcid[1383]: Audio API: sending BT_GETCAPABILITIES_RSP hcid[1383]: Audio API: received BT_SETCONFIGURATION_REQ hcid[1383]: config sco - device = 00:0B:2E:D5:27:DA access_mode = 2 hcid[1383]: State changed /org/bluez/audio/device0: HEADSET_STATE_DISCONNECTED -> HEADSET_STATE_CONNECT_IN_PROGRESS hcid[1383]: /org/bluez/audio/device0: Connecting to 00:0B:2E:D5:27:DA channel 2 hcid[1383]: link_key_request (sba=00:02:5B:00:A5:A5, dba=00:0B:2E:D5:27:DA) hcid[1383]: kernel auth requirements = 0x00 hcid[1383]: stored link key type = 0x00 hcid[1383]: /org/bluez/audio/device0: Connected to 00:0B:2E:D5:27:DA hcid[1383]: State changed /org/bluez/audio/device0: HEADSET_STATE_CONNECT_IN_PROGRESS -> HEADSET_STATE_CONNECTED hcid[1383]: State changed /org/bluez/audio/device0: HEADSET_STATE_CONNECTED -> HEADSET_STATE_PLAY_IN_PROGRESS hcid[1383]: SCO socket opened for headset /org/bluez/audio/device0 hcid[1383]: SCO fd=24 hcid[1383]: Audio API: sending BT_SETCONFIGURATION_RSP hcid[1383]: State changed /org/bluez/audio/device0: HEADSET_STATE_PLAY_IN_PROGRESS -> HEADSET_STATE_PLAYING hcid[1383]: Audio API: received BT_STREAMSTART_REQ hcid[1383]: Audio API: sending BT_STREAMSTART_RSP hcid[1383]: Audio API: sending BT_STREAMFD_IND hcid[1383]: Unix client disconnected (fd=22) hcid[1383]: State changed /org/bluez/audio/device0: HEADSET_STATE_PLAYING -> HEADSET_STATE_CONNECTED hcid[1383]: State changed /org/bluez/audio/device0: HEADSET_STATE_CONNECTED -> HEADSET_STATE_DISCONNECTED I'm open to any suggestions. If more info is needed, tell me what you'd like to see and I'll post it up. Thanks in advance, -d ------------------------------------------------------------------------------ SF.Net email is Sponsored by MIX09, March 18-20, 2009 in Las Vegas, Nevada. The future of the web can't happen without you. Join us at MIX09 to help pave the way to the Next Web now. Learn more and register at http://ad.doubleclick.net/clk;208669438;13503038;i?http://2009.visitmix.com/ _______________________________________________ Bluez-devel mailing list Bluez-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bluez-devel