Develop Bugs

stereo bt but mono sound

iam currently using latest rom from dopod and motorola 820, although the two earpiece have sounds it is only mono, can someone help to make it stereo? o recomend what rom to use, thanks

In order to have stereo audio on a Bluetooth device, you need a profile called A2DP, which is currently only supported by the latest Qtek Universal ROM at the moment:
ftp://xda:[email protected]_Updates/UNI_QTEK_13077_176_10900_WWE.exe
Dopod has not released a ROM supporting A2DP yet.

thanks for the help, God bless

No problem. Do let us know whether it works well or not.

it works, i have stereo sound, but need improvements, in a song the bluetoth stops 3 to 4 times when playing, the player dont stop its the motorola 820 that stops several times.

I did come across a post with a patch for the A2DP flaw the other day. It's somewhere on this site - do a search and see if you're lucky.

Found it: http://forum.xda-developers.com/viewtopic.php?t=46811&highlight=universal+a2dp
It worked for me for a little while so try it.

Hi,
I have used A2DP a lot with my JasJar the last 4-5 months, and had written a summary of my experiences with this "lag/stuttering"-issue in another thread here...I have copied the most essential of that text below...might be usefull info for you;
-----------------------------------------------------------------------------------
It seems to be two major factors affecting this "stuttering"/"lag" (from my experiences at least...I have used A2DP a lot with my Universal...couple of hours every day);
1. Universal struggling outputting(RAM/CPU...or both!?)
One help here is to apply the registry "A2DP priority" fix (found it in the forums here...and so did richardlai).
Another is to close all programs before using it (I usually do not do this...I usually only do it in hindsight when I get the problem).
2. Signal between Universal and headset struggling (obstructions between Universal and headset, WiFi nearby, so forth)
I for example get this problem if I put my Universal in my trouser pocket (I know, I must have big pockets, and walk around, I get stuttering/lag occationally. If I then take it out, and hold it in my hand farily still when I walk...no stuttering. I have found, that when I walk, it is Ok to have it in my backpack/rugsack...then for some reason it very rearly stutters...so I usually do that.
But when I walk of the bus at work, and walk into the "campus" of my workplace, which is cramped with radiotransmitters (is norways largest Telecom company)...I get a lot of stuttering, and need to take it out of backpack, and hold it in my hand, at it gets a lot better.
In short: A2DP with the Universal works, but is sensitive to disturbance/obstructions/moving around...and to make it worse, it is also sometimes dependant of the Universal itself struggling with CPU/RAM. So you can not totally get rid of the problem...but you can do a lot to minimize it...I almost never experience it now...except in the campus-area at work that is.
I have BTW had the exact same problems before with Qtek 2020 and Qtek9090 (which I got hold of some "A2DP patches", when I had those devices). ...but I really had a LOT more stuttering with those two...so much so, that I never used A2DP with them on a daily basis.
-----------------------------------------------------------------------------------
I also wrote a short post on my experiences with the different stereo headsets I have...yes, they actually act a little bit different it seems (regarding resume/pause button, and how easy/automatic they "reconnect"). You can see it here; http://forum.xda-developers.com/viewtopic.php?t=47977
Hope this is of some help for you!

RonnyGydar: I came across your little summary a little while ago and have done the registry fix, but the problem still exists! Do you think altering the value in some way would help?

richardlai,
I added the registry value manually...found a reg-file (or was it a CAB-file!?) that supposedly should add it...but when I checked later the key was still not added in the registry?
So I added it manually.
BUT, I do still have the problem...but that seems to be radio interference/distance so forth...since when I hold JasJar in my hand and don't move it around, I NEVER have an problem. ...and actually fairly rearly when I have it in my rugsack/backpack.
With 1 or 2 exceptions...where it lagged "all the time"...but then a soft-reset cured it.
So if you have this problem with your phone lying in front of you on the table...then it really sounds like it is the JasJar/Universal that IS the cause (and not interference)...and yes then the registry hack should help.
BUT I have not done any real testing of the effect of it...I am not sure how much effect it really has...all I know is that I had a "lot of problems" with lag before...and now I almost never have it.
...I hate those "diffuse" problems...when it is impossible to measure in a "scientific" way that "this cures it", and "this do not"! :-(
Sorry about the "little help" I give here...but this issue is a bit "fuzzy"...I have gotten it enough under control to that it isn't a problem any more (during a 1 hour workout, I will typically get this gap/lag 0-2 times...and that is not a problem for me...at least compared to what I experienced 6 months ago, where I was lucky if I could hear 10 seconds without any problems).

The stuttering problem seems to be permanent now... Luckily I have a HP hx4700 (which has a Broadcom bluetooth module) and works perfectly with my Jabra HT620s. Anyone using an A2DP ROM other than Qtek? I'd like to try a different ROM to see if it would make a difference.

only a second of sound
i use the qstarz bt stereo headset (http://www.qstarz.com/products/bh-q392s.aspx) and it works fine for phonecalls, but when i set it for wireless stereo and start a media player (TCPMP, WMP, Pocket Player...) i mostly only get sound for one second and then it shuts up. the players keep playing, the buttons on the headset can pause, resume and change tracks but there is no sound at all.
i get full wireless stereo playback occasionally, but i can't figure out what differs from time to time.
i applied the above patch with no success. anyone has a thought on the matter?
Ariel.

richardlai said:
The stuttering problem seems to be permanent now... Luckily I have a HP hx4700 (which has a Broadcom bluetooth module) and works perfectly with my Jabra HT620s. Anyone using an A2DP ROM other than Qtek? I'd like to try a different ROM to see if it would make a difference.
Click to expand...
Click to collapse
I use the BT620s with my Qtek 9000 without much trouble. Here's the trick:
Assuming you have paired with succes. Set headset and BT OFF before starting.
Turn bluetooth ON
wait a second or two
Turn headset ON
wait another two seconds
Now go to BT settings, and connect the headset.
Wait for the little pling sound (the activesync sound ).
Now start Windows Media Player and play an MP3.
Using this sequence has never failed me
edit:
I use the latest OFFICIAL Qtek 9000 WWE ROM. (Without the ExtROM though ) And i did not use any patches regarding A2DP or Bluetooth.

this is what i tried, many times. i get the activesync sound, sometimes from the speakers, sometimes in the headset, but almost always only one second of sound afterwards.
i found that by pairing the headset to the universal by pressing and holding the green button on the headset untill the universal recognises (doesn't take long) gives better results.
pairing it by the instructions of the headset (putting it in discover mode, and then searching for a device with the universal) will give me the one second sound almost every time.

Biffert said:
I use the BT620s with my Qtek 9000 without much trouble. Here's the trick:
Assuming you have paired with succes. Set headset and BT OFF before starting.
Turn bluetooth ON
wait a second or two
Turn headset ON
wait another two seconds
Now go to BT settings, and connect the headset.
Wait for the little pling sound (the activesync sound ).
Now start Windows Media Player and play an MP3.
Using this sequence has never failed me
Click to expand...
Click to collapse
Well, this has ALWAYS been the sequence I use (and I don't think you can do it in any other way). The real problem here is either the buffer memory or processor load.

richardlai said:
Biffert said:
I use the BT620s with my Qtek 9000 without much trouble. Here's the trick:
Assuming you have paired with succes. Set headset and BT OFF before starting.
Turn bluetooth ON
wait a second or two
Turn headset ON
wait another two seconds
Now go to BT settings, and connect the headset.
Wait for the little pling sound (the activesync sound ).
Now start Windows Media Player and play an MP3.
Using this sequence has never failed me
Click to expand...
Click to collapse
Well, this has ALWAYS been the sequence I use (and I don't think you can do it in any other way). The real problem here is either the buffer memory or processor load.
Click to expand...
Click to collapse
Then there is no A2DP problem, the only solution is to lower the overal systemload. Stop all programs you have running, disable every today plugin that need frequent updating (memory, battery meters etc.) Free up as much RAM as you possibly can. I have AT LEAST 16 mb RAM free when playing music via BT.

A2DP/AVRCP in Crossbow

Hello there.
I'm a newbie to using A2DP/AVRCP, sorry about that, but I have big issues.
I have huge lag when trying it out.
Specs:
HTC Universal
Midget's WM6 (Crossbow)
Radio 1.14
Bootloader 1.01?
Sony DR-BT20NX (really nice ones).
Anyways. I pair it up, no problemo at all. Tried a few calls. Works fine. Selected both handsfree and wireless stereo from profiles ofcourse.
So, I tried playing a movie in TCPMP. Audio and Video stutters every second. Tried playing a MP3 file in Media Player. Audio lag every second.
DAMN!
So, I went in to all these threads about A2DP/AVRCP in the forum (read them before) and checked out fixes etc. Everything seems to already be applied in this ROM. Priority256 value exists (in another folder though as described for another device, HKLM/BuiltIn/Drivers/WavDev I think)
What the heck can I do? I'm not comfortable applying different patches because I think A2DP support in every manner is already applied, so as the registry values.
HELP ME!!
Following the development/information on MS BT Stack change to Widcomm BT Stack on following links
http://forum.xda-developers.com/showthread.php?t=279236
http://forum.xda-developers.com/showthread.php?t=285419
http://forum.xda-developers.com/showthread.php?t=285696
http://forum.xda-developers.com/showthread.php?p=1073003
Any one know more?

Just a thought. Is it possible to deactivate SBC (recoding/decoding) of MP3's?? My Sonys support direct MP3 streaming.

http://forum.xda-developers.com/showthread.php?t=285419&page=20
Tried out BT Stack change for Hermes patch/program.
TEST RESULTS ON UNIVERSAL WITH WM6 (Midget aka Helmi unreleased)
Sound IS great. But other than that, this program does not work very well on my device. Of course this is designed for Hermes but I gave it a shot.
Issues:
1:
Screen flickers (only when this BT is turned on).
Flickers really bad and unable to use device.
Fix: set the device to standby (power button) and wake it up again. Flickering gone
2:
Once BT is deactivated for a few minutes I can't start it again.
Fix: No fix found yet. Only a Soft-reset and directly activate BT works.
3:
I can't use my GSM/UMTS connection anymore. Trying endlessly. Even after soft-reset's I can't connect. WiFi works fine though.
Fix: No fix found yet.
4:
Unable to uninstall this program. Tried several times. I get to the "Soft Reset Device Yes/Cancel". I soft reset, program still there and working.
5:
Hard-Reset, complete setup with WAP, MMS, MAIL etc.
Installed Widcomm BT Stack again.
Soft-reset:
Screen flickering (fix)
No 3G/UMTS connection avalible anymore. Even when BT stack is completly shut down.
We need a specific one for our Universal. Who's up to fixing this for us?
KEEPING this post updated.
EDIT 06: 18:40 @ 21/01/07

ANYONE into programming/developing interested in taking this as a sideproject so all of us Universal users can benefit from this great software?
PS. No, Nuclear (aka Infidel)! Pleace do not participate in other than testing. And if you do, please don't be too exited and write lies/bs in this thread. Thank you. Ta ta

I'm currently using Midget's WM6 with a set of Motorola HT820 bluetooth headphones without any problems.
In fact I've tried a couple of WM6 roms now and both have had working a2dp & avrcp and if anything quality is as good as the AKU3.3 I was previously running.
AVRCP & connecting up seems to be a little more reliable than the last rom as that would occasionally lose the pause control, something I don't think has happened on WM6 yet.
It might be worth trying your device with a different set of bt headphones to see if the problem persists.

Taz69 said:
I'm currently using Midget's WM6 with a set of Motorola HT820 bluetooth headphones without any problems.
In fact I've tried a couple of WM6 roms now and both have had working a2dp & avrcp and if anything quality is as good as the AKU3.3 I was previously running.
AVRCP & connecting up seems to be a little more reliable than the last rom as that would occasionally lose the pause control, something I don't think has happened on WM6 yet.
It might be worth trying your device with a different set of bt headphones to see if the problem persists.
Click to expand...
Click to collapse
Hmm. Headphones shouldn't matter, should it?? It's one thing if the sound in my headphones is bad, but it is the DEVICE that has problems actually outputting to the recoder fast enough. It works fine with the Widcomm!!

Taz69 said:
I'm currently using Midget's WM6 with a set of Motorola HT820 bluetooth headphones without any problems.
Click to expand...
Click to collapse
Did you need to do any extra tweaking on Midgets ROM to get them to work properly?

edeplano said:
Did you need to do any extra tweaking on Midgets ROM to get them to work properly?
Click to expand...
Click to collapse
i've hs-12W. I'm using it with midget's first vanilla crosbbow rom without any problems. without any tweaking.

I have tried the broadcomm stack on WM6 but couldn't get my jabra bt620s stereo phones to connect to both the headset AND stereo profile at the same time - if I connected it to the stereo profile, then it sounded great, with no log, but wouldn't act as a headset. If I connect it as a headset, it works fine, but all audio is mono, even stuff that shouldn't be. Should I be able to get this working for both at the same time?

Worked straight away without needing any tweaking.
Both stereo & phone headset work okay.
Also had Stereo configured with Universal and Phone paired with a hermes since getting a second data SIM and that setup is working okay as well.

Taz69 said:
Worked straight away without needing any tweaking.
Both stereo & phone headset work okay.
Also had Stereo configured with Universal and Phone paired with a hermes since getting a second data SIM and that setup is working okay as well.
Click to expand...
Click to collapse
Thanks Taz!
Is it true that this headset can store two pairing profiles (ie I can have them paired with my Qtek and my PC)?

A2DP Audio routing problems

Well, being that this is my first post, I would first like to say that this site and forums are top notch, I have had my 8525 for about a month now and have learned an immense amount of knowledge in a short amount of time thanks to you guys. Now for my problem...
I have my 8525 running Black Magik, radio 1.43.00 and have recently purchased a pair of Sony DR-BT21G A2DP stereo headphones. Now I was a bit weary about buying these since I have seen no mention of them on these forums... buy anyways. When I first paired the devices together I was able to listen to music without problem, though sound needed to be tweaked. After trolling for quite some time through the forums (yes, the search feature works great) I found what appeared to be the best A2DP setting for audio quality, and now after playing with every possibility cannot get music routed to the headset, phone calls work without a hitch. I have downloaded BTAudio to route all system sounds to the headset but It doesn't seem to work. I toggle BTAudio on and I can hear slight static through the phones but the audio still comes out through the system speaker. I have played with A2DP settings in both pimp my black and HTweakC but have not had any success. I am planning on reflashing Majik tonight to attempt to set it up from scratch, but I was wondering if anyone here could shed some light on this issue? Thanks in advance.

Freeguyad said:
I have my 8525 running Black Magik ... A2DP stereo ... was able to listen to music without problem ... cannot get music routed to the headset ...
Click to expand...
Click to collapse
Delete the pairing. SR. Re-pair. Should do hte trick. Better yet - for the most stable ROM and A2DP tweaked for the best sound "out of the box" - reflash with Sleuth255 variant of LVSW ROM.

How exactly can I delete the pair? I can repair the device but have not seen an option to remove it?

To toggle Audio to A2DP you might want to see:
http://forum.xda-developers.com/showthread.php?p=1485391#post1485391
There's a description and a link to download the CAB for A2DPToggle plugin too.
Let me know how it works on your hardware.

Bluetooth on official WM6 rom - Anyone?

Hello all,
Thanks for the help you provide in this forum. I am wondering if bluetooth is working for you in the official WM6 rom? My Trinity does not want to recognize any bluetooth devices. I have three - my laptop, my glasses and my headphones. Non are pairing and it says it cannot find any bluetooth devices. In the WM5 rom, it was no problem. Can anyone help?
Best regards,
Gilbert

edit: sorry ignore me

Gilbert said:
Hello all,
Thanks for the help you provide in this forum. I am wondering if bluetooth is working for you in the official WM6 rom? My Trinity does not want to recognize any bluetooth devices. I have three - my laptop, my glasses and my headphones. Non are pairing and it says it cannot find any bluetooth devices. In the WM5 rom, it was no problem. Can anyone help?
Best regards,
Gilbert
Click to expand...
Click to collapse
I'm using with a jabra handsfree BT250v and there is no problem using it - works very well.

Plantronics Pulsar 590A , headset and wireless stereo working perfect.
VM

Infact the WM6 is faster in detecting present of my iTech bluetooth headset.

I just wish they would have fixed their stack to work with Microsoft Voice Command on mono headsets! It always amazes me how Microsoft can take the few great ideas they have and f**k them up! Not that it's entirely their fault but you think they'd have had it working on the more popular devices, especially with those of the company they are always raving about!

any improvement with a2dp at all with wm6?

drewy said:
any improvement with a2dp at all with wm6?
Click to expand...
Click to collapse
OS is moving faster with A2DP activated. I can listen mp3 over WiFi without sound drops.
VM

Bluetooth connection is much faster and better than that of WM5.
No problem in connection to WMP via my Itech Bluetooth earphone.

ckleea said:
Bluetooth connection is much faster and better than that of WM5.
No problem in connection to WMP via my Itech Bluetooth earphone.
Click to expand...
Click to collapse
I have an itech clip II how can I listen to WMP or Destinator navigation sounds through my BT?

Hmmm... Got different experiences, found that bluetooth on new official WM6 has some issues with my HT820 A2DP headset.
1. Every time to start the mp3 will skip first 2-3 seconds.
2. The connection will getting unstable after 30-40 minutes continue playing.
3. Randomly my HT820 will lost connection with my CHT9100, also in the Comm. Manager will showed Bluetooth "disabled", but the blue LED still blinking as usual. Tried to turn it off and on but no success, have to push the reset button to clear out the mass.
Hope this might make you feel better, you are not alone...
Cheers,

katsj said:
I have an itech clip II how can I listen to WMP or Destinator navigation sounds through my BT?
Click to expand...
Click to collapse
It is plug and play.

watchsat said:
Hmmm... Got different experiences, found that bluetooth on new official WM6 has some issues with my HT820 A2DP headset.
1. Every time to start the mp3 will skip first 2-3 seconds.
2. The connection will getting unstable after 30-40 minutes continue playing.
3. Randomly my HT820 will lost connection with my CHT9100, also in the Comm. Manager will showed Bluetooth "disabled", but the blue LED still blinking as usual. Tried to turn it off and on but no success, have to push the reset button to clear out the mass.
Hope this might make you feel better, you are not alone...
Cheers,
Click to expand...
Click to collapse
I am having the exact same issue with my S805's. Both made same time by moto, so similar setup I would say.

Gilbert said:
...My Trinity does not want to recognize any bluetooth devices. I have three - my laptop, my glasses and my headphones...
Click to expand...
Click to collapse
I don't use any Bluetooth devices (sometimes my laptop), can someone tell me what Bluetooth Glasses are???
Thanks

is there still a high cpu usage with a2dp playing? Is the os still usable for other functions?

The CPU usge for a2dp is still high with this WM6 Rom, but it does not drop at all. The usage is
I have Contacts(with 500 entries), Resco File Explorer 2007, calander, phone, and not forgotten the Core Player loaded with the ram down to 19Mb, there is still no drop in the audio. One exception is the touch screen, if you touch and and move with frequency then u will surely experience drop in audio. I am sure we Trinity or D810 user had known this issue since day.

the updated rom seems so far so good. All I have put on is trinity hacks and tomtom so far, so I wonder if it has to do with all the other junk or the update.
its called RUU_Trinity_DOPODASIA_WWE_3.00.707.18_6275_1.46.30.11_108_Ship.exe

Bluetooth headset disconnection...

Hello,
I tried many kind of WM6 and 6.1 ROMs and faced the same problem with different frequency rate: my bluetooth headsets disconnect very often (also during phone calls) and actually I don't have any idea what should be the problem.
The HW I have is: H200 with Logitech BT mobile pro and Plantronics voyager 510 (of course not together the latters).
I tried different radio versions and different roms: the only variance is the "well-work" period. If it lose the connection I have to set off/on the BT in connection manager. Does anybody have this problem or know the root cause/soution to fix? I really appreciate any kind of help/suggessions.
Thanks

I have the same problem as you... I tried WM5 and WM6 (Official Spanish ROMs) and no solution found. My hardware is H200 and Parrot CK3000Evo. I think may be a hardware problem. Any help please???

vampirox said:
I have the same problem as you... I tried WM5 and WM6 (Official Spanish ROMs) and no solution found. My hardware is H200 and Parrot CK3000Evo. I think may be a hardware problem. Any help please???
Click to expand...
Click to collapse
Don't think there's any easy answer. Often seems to be a combination of headset firmware and BT settings in your WM device.
There are good discussions of some of the problems and issues in this thread and this thread.
Other than that, you could try different firmware versions for your headsets - that solved my problem with a Jabra 8010 (till it just crapped out completely).
Alternate solution is to cut the crappy earphones off your standard USB headphone and solder on a 3.5mm stereo plug. I haven't quite got to that stage yet, but have come perilously close many times.

e_gregious said:
Don't think there's any easy answer. Often seems to be a combination of headset firmware and BT settings in your WM device.
There are good discussions of some of the problems and issues in this thread and this thread.
Other than that, you could try different firmware versions for your headsets - that solved my problem with a Jabra 8010 (till it just crapped out completely).
Alternate solution is to cut the crappy earphones off your standard USB headphone and solder on a 3.5mm stereo plug. I haven't quite got to that stage yet, but have come perilously close many times.
Click to expand...
Click to collapse
Do you think it refer to the A2DP problem? I don't want to use my HS to listen to music; otherwise these aren't A2DP compliant neither. I just want to use for phonecalls as it designed for.

_sasa_ said:
Do you think it refer to the A2DP problem? I don't want to use my HS to listen to music; otherwise these aren't A2DP compliant neither. I just want to use for phonecalls as it designed for.
Click to expand...
Click to collapse
I want to use for phonecalls too. I'm sure there is a bluetooth problem, perhaps a hardware problem. I have same problems using BT GPS...

I have the same issue with my Cardo headset and my BTGPS unit.
On a call and the headset cuts out and call diverts to handset.
BTGPS working fine then suddenly no connection to BTGPS.
Are any of you using MS Voice Command with BT Fix? My problems seem to have started right around the time I began using it. Before that I don't recall having any headset drops. Can not say the same about GPS as I've only had it a short time and have not un installed VC to test.
BTW. I'm using the stock WM6 update and radio for AT&T 8525 H100 hardware.

Heykrop said:
Are any of you using MS Voice Command with BT Fix? My problems seem to have started right around the time I began using it. Before that I don't recall having any headset drops. Can not say the same about GPS as I've only had it a short time and have not un installed VC to test.
Click to expand...
Click to collapse
I'm not using voice command, and i probe it using clean official WM5 and WM6 ROM. Today I installed schaps WM6 ROM, but i have the same problem.

I have the same problem too. It will be ok for a few days, then wont be able to use BT (Plant 250). Then either I have reset the phone or turn off BT in phone and turn it back on, then it will work.
I believe it is a hardware issue, cuz I had a 8525 before, and never had this issue. But with the set I got now, its been a problem from day one.

I don't use voicecommand at all. The strange thing is that I use a Nokia BT GPS and it works fine always: no disconnection on long trips neither.

_sasa_ said:
no disconnection on long trips neither.
Click to expand...
Click to collapse
Do you use headset and BT GPS at same time? When headset disconnects BT GPS still working?

vampirox said:
Do you use headset and BT GPS at same time? When headset disconnects BT GPS still working?
Click to expand...
Click to collapse
Yes, the HS is dropping but the GPS still working forward. Strange, but because of that I think it's not HW problem.

_sasa_ said:
Do you think it refer to the A2DP problem? I don't want to use my HS to listen to music; otherwise these aren't A2DP compliant neither. I just want to use for phonecalls as it designed for.
Click to expand...
Click to collapse
Sorry if I mislead you with the A2DP stuff. Didn't realise you were having issues with just the basic audio.
As I mentioned in the other post, though, there seems to be compatibility issues between the MS BT stack and some headsets. Changing ROMs probably won't help, because they still all use the same BT stack. Better to try playing round with the headset - see if you can change firmware in that, if possible.
I know there are some people trying to port the Widcomm BT stack to WM6, but I haven't heard of any real success yet.