Hello everyone,
I’m currently trying to get Bluetooth Headset audio working on my Dragonboard 410c. The Dragonboard crashes in a very unexpected way when starting a bluetooth audio stream that is HSP (headset) or HFP (handfree), in the way that the system halts for about half a second then reboots (after complaining about some HCI frame sending issues).
In the example below I’m using bluez-alsa (https://github.com/Arkq/bluez-alsa) but the same is happening when I’m trying with pulseaudio instead.
To build/install bluezalsa on a linaro dev image:
apt-get install libasound-dev libbluetooth3-dev libglib2.0-dev libsbc-dev
git clone https://github.com/Arkq/bluez-alsa.git
cd bluez-alsa && autoreconf --install
mkdir build && cd build
../configure --enable-debug
make && sudo make install
Now run bluez-alsa:
# make sure that pulseaudio is not running
pulseaudio -k
# start blueaudio with the HSP audio gateway profile only
sudo bluealsa -p hsp-ag
In another terminal, connect with a bluetooth headset:
bluetoothctl
[bluetooth] pair XX:XX:XX:XX:XX
[bluetooth] connect XX:XX:XX:XX:XX
[bluetooth] exit
Now aplay / arecord something:
aplay -D bluealsa:HCI=hci0,DEV=XX:XX:XX:XX:XX:XX,PROFILE=sco piano2.wav
Basically this is what I’m doing after a fresh boot (log from below on the Linaro 18.01 developper build, but it’s the same on a 19.01 and a self build OE-RPB with the 4.14.96 Kernel):
................. LOTS OF LOGS........
linaro-developer login: root (automatic login)
Last login: Mon Mar 4 13:31:50 UTC 2019 on ttyMSM0
Linux linaro-developer 4.14.0-qcomlt-arm64 #1 SMP PREEMPT Thu Jan 3 21:50:32 UTC 2019 aarch64
The programs included with the Debian GNU/Linux system are free software;
the exact distribution terms for each program are described in the
individual files in /usr/share/doc/*/copyright.
Debian GNU/Linux comes with ABSOLUTELY NO WARRANTY, to the extent
permitted by applicable law.
root@linaro-developer:~# tail -f /var/log/messages
Mar 4 13:36:12 linaro-developer NetworkManager[1720]: <info> [1551706572.7016] dhcp6 (enx00e04d370e3d): nameserver 'fd00::464e:6dff:fe1b:94d4'
Mar 4 13:36:12 linaro-developer NetworkManager[1720]: <info> [1551706572.7017] dhcp6 (enx00e04d370e3d): state changed unknown -> bound
Mar 4 13:36:12 linaro-developer NetworkManager[1720]: <info> [1551706572.7101] dhcp6 (enx00e04d370e3d): client pid 1893 exited with status 0
Mar 4 13:36:12 linaro-developer NetworkManager[1720]: <info> [1551706572.7102] dhcp6 (enx00e04d370e3d): state changed bound -> done
Mar 4 13:36:13 linaro-developer kernel: [ 14.944502] Bluetooth: RFCOMM TTY layer initialized
Mar 4 13:36:13 linaro-developer kernel: [ 14.944559] Bluetooth: RFCOMM socket layer initialized
Mar 4 13:36:13 linaro-developer kernel: [ 14.948267] Bluetooth: RFCOMM ver 1.11
Mar 4 13:36:13 linaro-developer NetworkManager[1720]: <info> [1551706573.5388] bluez5: NAP: added interface 02:00:14:E9:15:93
Mar 4 13:36:37 linaro-developer NetworkManager[1720]: <info> [1551706597.0915] device (wlan0): supplicant interface state: starting -> down
Mar 4 13:40:56 linaro-developer NetworkManager[1720]: <warn> [1551706856.8643] device (wlan0): re-acquiring supplicant interface (#1).
[ 64.309584] random: crng init done
[ 64.309668] random: 7 urandom warning(s) missed due to ratelimiting
Mar 4 13:41:12 linaro-developer kernel: [ 64.309584] random: crng init done
Mar 4 13:41:12 linaro-developer kernel: [ 64.309668] random: 7 urandom warning(s) missed due to ratelimiting
[ 64.348488] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
Mar 4 13:41:12 linaro-developer NetworkManager[1720]: <info> [1551706872.1956] sup-iface[0xaaaaf0f64b90,wlan0]: supports 5 scan SSIDs
Mar 4 13:41:12 linaro-developer NetworkManager[1720]: <info> [1551706872.2004] device (wlan0): supplicant interface state: starting -> ready
Mar 4 13:41:12 linaro-developer NetworkManager[1720]: <info> [1551706872.2007] device (wlan0): state change: unavailable -> disconnected (reason 'supplicant-available', sys-iface-state: 'managed')
Mar 4 13:41:12 linaro-developer kernel: [ 64.348488] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
#### NOTE FROM syteng:
#### this is the moment when the aplay/arecord command is executed
#### NOTE END
[ 116.960324] Bluetooth: hci0 sending frame failed (-84)
[ 116.963042] Bluetooth: hci0 sending frame failed (-84)
Format: Log Type - Time(microsec) - Message - Optional Info
Log Type: B - Since Boot(Power On Reset), D - Delta, S - Statistic
S - QC_IMAGE_VERSION_STRING=BOOT.BF.3.0-00288
S - IMAGE_VARIANT_STRING=HAAAANAZA
S - OEM_IMAGE_VERSION_STRING=CRM
S - Boot Config, 0x000002e1
S - Core 0 Frequency, 0 MHz
B - 1544 - PBL, Start
B - 3489 - bootable_media_detect_entry, Start
B - 69702 - bootable_media_detect_success, Start
B - 69706 - elf_loader_entry, Start
B - 71222 - auth_hash_seg_entry, Start
B - 71431 - auth_hash_seg_exit, Start
B - 86744 - elf_segs_hash_verify_entry, Start
B - 146973 - PBL, End
B - 153567 - SBL1, Start
B - 216214 - pm_device_init, Start
D - 14731 - pm_device_init, Delta
B - 231373 - boot_flash_init, Start
D - 0 - boot_flash_init, Delt
......... stop here
I tried quite a lot of things in the last few days. For example streaming music via A2DP works flawlessly. Both PA and Bluezalsa work fine when I’m relying on a USB BT dongle instead of using the Dragonboards chipset.
Any clue?
