bluetooth headset - connects but no audio
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hi everybody,
it's some time I'm trying to get my BT headset to work with btsco, but with no results.
the problem, which I found reported but not answered in a forum on the bluetooth-alsa sourceforge project page
(https://sourceforge.net/tracker/?func=3Ddetail&atid=3D678259&aid=3D10679=
46&group_id=3D116589),
is I can connect to the headset (see log above), set volume from pc, see events, and even hear a hissing sound, but I can't hear any sound using aplay, nor record anything; the programs just hang.
I hope this issue is not an already well known and solved; if so it is, please redirect me to where the info I need are, thanks.
Else, here are some logs as suggested to report; I omitted the output of hcidump -x because it is very long, but I can of course provide it if necessary.
thanks in advance for helping me.
BT dongle: Trust BT180 (USB, works fine with other devices, like my T39 phone)
BT headset: Ericsson HBH-35 (works fine as phone headset)
# hciconfig -a hci0: Type: USB ~ BD Address: 00:0B:0D:40:6F:B9 ACL MTU: 120:20 SCO MTU: 64:0 ~ UP RUNNING PSCAN ISCAN AUTH ~ RX bytes:95 acl:0 sco:0 events:12 errors:0 ~ TX bytes:296 acl:0 sco:0 commands:12 errors:0 ~ Features: 0xff 0xff 0x05 0x00 0x00 0x00 0x00 0x00 ~ Packet type: DM1 DM3 DM5 DH1 DH3 DH5 HV1 HV2 HV3 ~ Link policy: RSWITCH HOLD SNIFF PARK ~ Link mode: SLAVE ACCEPT ~ Name: 'Naima blue 0' ~ Class: 0x000100 ~ Service Classes: Unspecified ~ Device Class: Computer, Uncategorized ~ HCI Ver: 1.1 (0x1) HCI Rev: 0x0 LMP Ver: 1.1 (0x1) LMP Subver: 0x757 ~ Manufacturer: Silicon Wave (11)
# hciconfig hci0 hci0: Type: USB ~ BD Address: 00:0B:0D:40:6F:B9 ACL MTU: 120:20 SCO MTU: 64:0 ~ UP RUNNING PSCAN ISCAN AUTH ~ RX bytes:372 acl:0 sco:0 events:15 errors:0 ~ TX bytes:305 acl:0 sco:0 commands:15 errors:0
# hcitool info 00:0E:07:4E:4B:3E Requesting information ... ~ BD Address: 00:0E:07:4E:4B:3E ~ Device Name: HBH-35 ~ LMP Version: 1.1 (0x1) LMP Subversion: 0x8d40 ~ Manufacturer: Ericsson Technology Licensing (0) ~ Features: 0xbc 0x28 0x01 0x00 0x00 0x00 0x00 0x00 ~ <encryption> <slot offset> <timing accuracy> <role switc= h> ~ <sniff mode> <SCO link> <HV3 packets> <CVSD>
# btsco 00:0E:07:4E:4B:3E Device is 1:0 Voice setting: 0x0060 RFCOMM channel 1 connected recieved AT*ECBP=3D? recieved AT+CLIP=3D1 recieved AT+CSCS=3D"UTF-8" recieved AT+CLAN? recieved AT+CKPD=3D200 opened hwdep connected SCO channel Setting sco fd Done setting sco fd recieved AT+VGS=3D15 Sending up speaker change 15
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~ O LYNX
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I own a HBH-35 myself and it works very well...
Do you have another dongle available to test this? I use an epox bt-dg03.
What kernel version do you use? Make sure it's 2.6.10 and you have the
- -mh1 patches added.
you might also want to try to fire up alsamixer [-c1] and enable the "loopback" so that you can/should hear yourself (simply fires back the audio to the headset directly).
best regards,
~ Lars
WiseLYNX wrote:
| hi everybody, | | it's some time I'm trying to get my BT headset to work with btsco, but | with no results. | | the problem, which I found reported but not answered in a forum on the | bluetooth-alsa sourceforge project page |
(https://sourceforge.net/tracker/?func=3Ddetail&atid=3D678259&aid=3D10679=
46&group_id=3D116589),
|
| is I can connect to the headset (see log above), set volume from pc, se= e
| events, and even hear a hissing sound, but I can't hear any sound using | aplay, nor record anything; the programs just hang. | | I hope this issue is not an already well known and solved; if so it is, | please redirect me to where the info I need are, thanks. | | Else, here are some logs as suggested to report; I omitted the output o= f | `hcidump -x` because it is very long, but I can of course provide it if | necessary. | | thanks in advance for helping me. | | BT dongle: Trust BT180 (USB, works fine with other devices, like my T39 | phone) | BT headset: Ericsson HBH-35 (works fine as phone headset) | | # hciconfig -a | hci0: Type: USB | ~ BD Address: 00:0B:0D:40:6F:B9 ACL MTU: 120:20 SCO MTU: 64:0 | ~ UP RUNNING PSCAN ISCAN AUTH | ~ RX bytes:95 acl:0 sco:0 events:12 errors:0 | ~ TX bytes:296 acl:0 sco:0 commands:12 errors:0 | ~ Features: 0xff 0xff 0x05 0x00 0x00 0x00 0x00 0x00 | ~ Packet type: DM1 DM3 DM5 DH1 DH3 DH5 HV1 HV2 HV3 | ~ Link policy: RSWITCH HOLD SNIFF PARK | ~ Link mode: SLAVE ACCEPT | ~ Name: 'Naima blue 0' | ~ Class: 0x000100 | ~ Service Classes: Unspecified | ~ Device Class: Computer, Uncategorized | ~ HCI Ver: 1.1 (0x1) HCI Rev: 0x0 LMP Ver: 1.1 (0x1) LMP Subver: | 0x757 | ~ Manufacturer: Silicon Wave (11) | | # hciconfig hci0 | hci0: Type: USB | ~ BD Address: 00:0B:0D:40:6F:B9 ACL MTU: 120:20 SCO MTU: 64:0 | ~ UP RUNNING PSCAN ISCAN AUTH | ~ RX bytes:372 acl:0 sco:0 events:15 errors:0 | ~ TX bytes:305 acl:0 sco:0 commands:15 errors:0 | | # hcitool info 00:0E:07:4E:4B:3E | Requesting information ... | ~ BD Address: 00:0E:07:4E:4B:3E | ~ Device Name: HBH-35 | ~ LMP Version: 1.1 (0x1) LMP Subversion: 0x8d40 | ~ Manufacturer: Ericsson Technology Licensing (0) | ~ Features: 0xbc 0x28 0x01 0x00 0x00 0x00 0x00 0x00 | ~ <encryption> <slot offset> <timing accuracy> <role switch> | ~ <sniff mode> <SCO link> <HV3 packets> <CVSD> | | # btsco 00:0E:07:4E:4B:3E | Device is 1:0 | Voice setting: 0x0060 | RFCOMM channel 1 connected | recieved AT*ECBP=3D? | recieved AT+CLIP=3D1 | recieved AT+CSCS=3D"UTF-8" | recieved AT+CLAN? | recieved AT+CKPD=3D200 | opened hwdep | connected SCO channel | Setting sco fd | Done setting sco fd | recieved AT+VGS=3D15 | Sending up speaker change 15 | | | -- | | =B0=B0=B0 Wise | ~ O LYNX | | GPG key: http://wiselynx.interfree.it/wiselynx.naima.asc | MD5 checksum: http://wiselynx.interfree.it/wiselynx.naima.asc.md5 | | -----BEGIN GEEK CODE BLOCK----- | Version: 3.1 | GE>$/IT/S d+ s: !a>? C++(+++)>$ U P>+ L++>++++ E--- W++ N ?o ?K w-- ?O = ?M | ?V>+ PS+ !PE Y+ PGP+ t- ?5 X- R+(*) tv- b+(++)>+++ DI(++) !D G e++ h!*@ | r%>++ y-->+ | ------END GEEK CODE BLOCK------ |
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| Do you have another dongle available to test this? I use an epox bt-dg0= 3.
sure, I'll have a try with the dongle of a friend of mine. what's sure is that with my dongle on another computer, the headset doesn't work..
| What kernel version do you use? Make sure it's 2.6.10 and you have the | -mh1 patches added.
the kernel is a 2.6.10-r5 from gentoo; I don't know if it's patched, but I'll check
| you might also want to try to fire up alsamixer [-c1] and enable the | "loopback" so that you can/should hear yourself (simply fires back the | audio to the headset directly).
I tried alsamixer, and could set the volume level (and even hear the hissing sound become louder or weaker). I can't remember if unmuting the loopback didn't simply work, or if I wasn't able to unmute, for a reason or another it didn't work :(
- --
=B0=B0=B0 Wise
~ O LYNX
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WiseLYNX wrote:
| | Do you have another dongle available to test this? I use an epox bt-dg03.
| | sure, I'll have a try with the dongle of a friend of mine. what's sure | is that with my dongle on another computer, the headset doesn't work..
Sounds like it might be the fault of the dongle, or the bluez stack has an issue with it. Did you try with M$windows?
| | What kernel version do you use? Make sure it's 2.6.10 and you have th= e
| | -mh1 patches added. | | the kernel is a 2.6.10-r5 from gentoo; I don't know if it's patched, bu=
t
| I'll check
no, it's not patched with mh1. Best thing would be to use the vanilla kernel (i.e. get it directly from kernel.org) and patch it with -mh1 patchset from bluez. I'm using gentoo, too, btw, so it should work this w= ay.
| | | you might also want to try to fire up alsamixer [-c1] and enable the | | "loopback" so that you can/should hear yourself (simply fires back th= e | | audio to the headset directly). | | I tried alsamixer, and could set the volume level (and even hear the | hissing sound become louder or weaker). I can't remember if unmuting th=
e
| loopback didn't simply work, or if I wasn't able to unmute, for a reaso= n
| or another it didn't work :(
it should. You can use this as the simplest and fool-proof testing method, as it does not involve any alsa library stuff beyond the snd-bt-sco-kernel module itself, so there are not many other error sources than the dongle and the headself itself.
Maybe there's a problem with the hci_usb implementation for your dongle..= .
best regards,
~ Lars
| | -- | | =B0=B0=B0 Wise | ~ O LYNX | | GPG key: http://wiselynx.interfree.it/wiselynx.naima.asc | MD5 checksum: http://wiselynx.interfree.it/wiselynx.naima.asc.md5 | | -----BEGIN GEEK CODE BLOCK----- | Version: 3.1 | GE>$/IT/S d+ s: !a>? C++(+++)>$ U P>+ L++>++++ E--- W++ N ?o ?K w-- ?O = ?M | ?V>+ PS+ !PE Y+ PGP+ t- ?5 X- R+(*) tv- b+(++)>+++ DI(++) !D G e++ h!*@ | r%>++ y-->+ | ------END GEEK CODE BLOCK------ |
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| Sounds like it might be the fault of the dongle, or the bluez stack has | an issue with it. Did you try with M$windows?
no, nor I can try. my pc is M$ stuff free :)
| no, it's not patched with mh1. Best thing would be to use the vanilla | kernel (i.e. get it directly from kernel.org) and patch it with -mh1 | patchset from bluez. I'm using gentoo, too, btw, so it should work this | way.
I'd rather keeping the gentoo-dev kernel. isn't it possible to patch it?
| it should. You can use this as the simplest and fool-proof testing | method, as it does not involve any alsa library stuff beyond the | snd-bt-sco-kernel module itself, so there are not many other error | sources than the dongle and the headself itself.
I'll have another try so..
| Maybe there's a problem with the hci_usb implementation for your dongle=
...
I'll try with another dongle when I'll be able to (it belongs to a friend of mine, I should see him soon)
- --
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~ O LYNX
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WiseLYNX wrote:
| | no, it's not patched with mh1. Best thing would be to use the vanilla | | kernel (i.e. get it directly from kernel.org) and patch it with -mh1 | | patchset from bluez. I'm using gentoo, too, btw, so it should work this | | way. | | I'd rather keeping the gentoo-dev kernel. isn't it possible to patch it?
Try it... I don't know. I prefer the vanilla kernels with gentoo... don't know why. But they work well (on my systems at least).
I don't know what patches are in this kernel, you can check the ebuild and try to find out :)
using a vanilla with mh1 makes error tracking simpler, because if there are no other patches in the kernel nobody will scream "try the vanilla first..." ;)
best regards,
~ Lars
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| no, it's not patched with mh1. Best thing would be to use the vanilla | kernel (i.e. get it directly from kernel.org) and patch it with -mh1 | patchset from bluez. I'm using gentoo, too, btw, so it should work this | way.
I patched manually the kernel. now I get this strange thing:
# btsco 00:0E:07:4E:4B:3E Device is 1:0 Failed to connect to SDP server: Permission denied Assuming channel 2 Voice setting: 0x0060 Can't connect RFCOMM channel: Too many levels of symbolic links
.. ?
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WiseLYNX wrote:
| | no, it's not patched with mh1. Best thing would be to use the vanilla | | kernel (i.e. get it directly from kernel.org) and patch it with -mh1 | | patchset from bluez. I'm using gentoo, too, btw, so it should work this | | way. | | I patched manually the kernel. now I get this strange thing: | | # btsco 00:0E:07:4E:4B:3E | Device is 1:0 | Failed to connect to SDP server: Permission denied | Assuming channel 2 | Voice setting: 0x0060 | Can't connect RFCOMM channel: Too many levels of symbolic links |
use a vanilla kernel.
no really, no idea :)
maybe someone else?
- - Lars
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Lars Grunewaldt
* software development
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| use a vanilla kernel.
I did a try, with vanilla 2.6.10 directly from kernel.org. guess what? doesn't work neither that way :(
| no really, no idea :)
mh.. may it be a hint the fact this (the "Permission denied" and "Too many levels of symbolic links" errors) happened _after_ I applied the mh1 patch?
| maybe someone else?
if someone else wanna help, he would be welcome :)
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~ O LYNX
GPG key: http://wiselynx.interfree.it/wiselynx.naima.asc
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WiseLYNX wrote:
| | use a vanilla kernel. | | I did a try, with vanilla 2.6.10 directly from kernel.org. guess what? | doesn't work neither that way :( | | | no really, no idea :) | | mh.. may it be a hint the fact this (the "Permission denied" and "Too | many levels of symbolic links" errors) happened _after_ I applied the | mh1 patch?
well it *should* work with this setup, as it works on my system with stock 2.6.10 plus mh1 patches. Anything else special, like, are you using an SMP kernel?
Maybe it's a problem with your dongle, do you have access to another one to test this? (local setup: epox bt-dg03 + sony/eri. hbh-35 headset)
best regards,
~ Lars
- --
Lars Grunewaldt
* software development
* multimedia design
skills: C/C++/Java/PHP/(X)HTML/Flash/audio/video
web: http://www.dark-reality.de
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| well it *should* work with this setup, as it works on my system with | stock 2.6.10 plus mh1 patches. Anything else special, like, are you | using an SMP kernel?
no, ? just checked and SMP is disabled. it may be some issue with other settings, maybe in the bluetooth section?
| Maybe it's a problem with your dongle, do you have access to another on= e
| to test this? (local setup: epox bt-dg03 + sony/eri. hbh-35 headset)
it could be of course. I'll have a try with the one (other productor, but same chipset I fear) of a friend of mine, but it won't be before next week. anyway, isn't it strange that the dongle works fine with other applications (I'm able to connect via gprs with my phone)?
I'll do some more experiments on my own, and I'll let you know if I understand something.
- --
=B0=B0=B0 Wise
~ O LYNX
GPG key: http://wiselynx.interfree.it/wiselynx.naima.asc
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WiseLYNX wrote:
| | well it *should* work with this setup, as it works on my system with | | stock 2.6.10 plus mh1 patches. Anything else special, like, are you | | using an SMP kernel? | | no, ? just checked and SMP is disabled. it may be some issue with other | settings, maybe in the bluetooth section?
Don't know, things are quite straight-forward in there. Activate sco support...
| | | Maybe it's a problem with your dongle, do you have access to another one | | to test this? (local setup: epox bt-dg03 + sony/eri. hbh-35 headset) | | it could be of course. I'll have a try with the one (other productor, | but same chipset I fear) of a friend of mine, but it won't be before | next week. anyway, isn't it strange that the dongle works fine with | other applications (I'm able to connect via gprs with my phone)?
No, because headsets use the sco data transmission, while most other services should use rfcomm data channels. So it's quite possible that while other things work well, there's a problem with the dongle when it comes to the sco channels.
| I'll do some more experiments on my own, and I'll let you know if I | understand something.
Would be great. Good luck! I'm out of ideas :(
- - Lars
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Lars Grunewaldt
* software development
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| | I'll do some more experiments on my own, and I'll let you know if I | | understand something. | | Would be great. Good luck! I'm out of ideas :(
alas, you where right. it was just a dongle issue - my friend's works perfectly. my misfortune in buying hardware strikes back :(
is there any way to "fix" the problem?
thanks for helping..
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=B0=B0=B0 Wise
~ O LYNX
GPG key: http://wiselynx.interfree.it/wiselynx.naima.asc
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WiseLYNX wrote:
| | | I'll do some more experiments on my own, and I'll let you know if I | | | understand something. | | | | Would be great. Good luck! I'm out of ideas :( | | alas, you where right. it was just a dongle issue - my friend's works | perfectly. my misfortune in buying hardware strikes back :( | | is there any way to "fix" the problem? |
I asked Marcel on this list, but I did not understand his answer...:
| the Silicon Wave chips are not the best ones. They have problems and it | seems that they are not going to fix them. Mostly because they sell ROM | chips are these ones can't be updated by a newer firmware. However if | this is the problem with SCO packets and handle 0 then the hci_usb | driver should simply drop these frames, because they are not valid SCO | payload.
...?
I'm not sure if he means that there are to many packages recieved now, or that the packages are dropped because of the 0 handle. I think that might be hot-fixable somehow, at least for one connection. Of course this is ugly, but if it's optional just to make this broken chipsets work?
best regards,
~ Lars
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Lars Grunewaldt
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web: http://www.dark-reality.de
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