[Pkg-bluetooth-maintainers] Bug#788466: bluez attempts eSCO connection, even when device only advertises SCO
Sander van Grieken
sander at outrightsolutions.nl
Thu Jun 11 16:35:53 UTC 2015
Package: bluez
Version: 5.23-2+b1
Severity: important
I have an old Jabra BT150 headset that I have since recently been able to use
again because Bluez5 has added support for HSP.
Now, I can make it work using an old dongle, but with a (newer) onboard adapter
the audio connection fails.
old dongle:
HCI Version: 1.1 (0x1) Revision: 0x20d
LMP Version: 1.1 (0x1) Subversion: 0x20d
onboard adapter:
HCI Version: 3.0 (0x5) Revision: 0x1b07
LMP Version: 3.0 (0x5) Subversion: 0xfc00
The old dongle doesn't support eSCO, the onboard adapter does:
old dongle:
$ hciconfig hci0 features
hci0: Type: BR/EDR Bus: USB
BD Address: 00:02:72:B2:A5:15 ACL MTU: 192:8 SCO MTU: 64:8
Features: 0xff 0xff 0x0f 0x00 0x00 0x00 0x00 0x00
<3-slot packets> <5-slot packets> <encryption> <slot offset>
<timing accuracy> <role switch> <hold mode> <sniff mode>
<park state> <RSSI> <channel quality> <SCO link> <HV2 packets>
<HV3 packets> <u-law log> <A-law log> <CVSD> <paging scheme>
<power control> <transparent SCO>
onboard adapter:
$ hciconfig hic0 features
hci0: Type: BR/EDR Bus: USB
BD Address: 88:53:2E:41:AD:F6 ACL MTU: 310:10 SCO MTU: 64:8
Features page 0: 0xff 0xff 0x8f 0xfe 0x9b 0xff 0x59 0x87
<3-slot packets> <5-slot packets> <encryption> <slot offset>
<timing accuracy> <role switch> <hold mode> <sniff mode>
<park state> <RSSI> <channel quality> <SCO link> <HV2 packets>
<HV3 packets> <u-law log> <A-law log> <CVSD> <paging scheme>
<power control> <transparent SCO> <broadcast encrypt>
<EDR ACL 2 Mbps> <EDR ACL 3 Mbps> <enhanced iscan>
<interlaced iscan> <interlaced pscan> <inquiry with RSSI>
<extended SCO> <EV4 packets> <EV5 packets> <AFH cap. slave>
<AFH class. slave> <3-slot EDR ACL> <5-slot EDR ACL>
<sniff subrating> <pause encryption> <AFH cap. master>
<AFH class. master> <EDR eSCO 2 Mbps> <EDR eSCO 3 Mbps>
<3-slot EDR eSCO> <extended inquiry> <simple pairing>
<encapsulated PDU> <non-flush flag> <LSTO> <inquiry TX power>
<EPC> <extended features>
Features page 1: 0x01 0x00 0x00 0x00 0x00 0x00 0x00 0x00
The headset does NOT advertise eSCO, only SCO:
BD Address: 00:13:17:D4:B6:3D
OUI Company: GN Netcom as (00-13-17)
Device Name: Jabra BT150
LMP Version: 1.2 (0x2) LMP Subversion: 0x611
Manufacturer: Cambridge Silicon Radio (10)
Features: 0xfc 0xfe 0x0b 0x00 0x08 0x08 0x00 0x00
<encryption> <slot offset> <timing accuracy> <role switch>
<hold mode> <sniff mode> <RSSI> <channel quality> <SCO link>
<HV2 packets> <HV3 packets> <u-law log> <A-law log> <CVSD>
<paging scheme> <transparent SCO> <AFH cap. slave>
<AFH cap. master>
But regardless, using the onboard adapter bluez will still attempt to set up an
eSCO connection:
< HCI Command: Setup Synchronous Connection (0x01|0x0028) plen 17
handle 40 voice setting 0x0060 ptype 0x0380
> HCI Event: Number of Completed Packets (0x13) plen 5
handle 40 packets 1
> HCI Event: Command Status (0x0f) plen 4
Setup Synchronous Connection (0x01|0x0028) status 0x1a ncmd 1
Error: Unsupported Remote Feature / Unsupported LMP Feature
With old dongle:
< HCI Command: Add SCO Connection (0x01|0x0007) plen 4
handle 41 ptype 0x00e0
Packet type: HV1 HV2 HV3
....
It looks like the capabilities of the headset are not taken into account.
-- System Information:
Debian Release: stretch/sid
APT prefers testing
APT policy: (750, 'testing'), (700, 'stable'), (600, 'unstable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386
Kernel: Linux 3.16.0-4-amd64 (SMP w/8 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
Versions of packages bluez depends on:
ii dbus 1.8.18-1
ii init-system-helpers 1.23
ii kmod 20-1
ii libc6 2.19-18
ii libdbus-1-3 1.8.18-1
ii libglib2.0-0 2.44.1-1
ii libreadline6 6.3-8+b3
ii libudev1 215-18
ii lsb-base 4.1+Debian13+nmu1
ii udev 215-18
bluez recommends no packages.
bluez suggests no packages.
-- no debconf information
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