Helmi WM6 A2DP BT Stereo Thread (5.2.1620 Build 18125.0.4.2)
 

With Helmi_c's great new WM6 breakthrough ROM I figured we need a thread to focus on A2DP since my search only came up with a few scattered posts buried in the bugs thread.

PLEASE ONLY POST A2DP / BT STEREO RELATED STUFF PLEASE!

It would be great if everyone could post their experience with the new ROM using stereo BT. Again, this is only for people running Helmi's WM6 5.2.1620 Build 18125.0.4.2 ROM.


Personally, I get almost nothing so far, it can't even be called skipping I barely ever hear anything.

What is everyone else getting? Please let us know what you've tried like tweaks and different stacks etc.

that was my main reason for going back to 3.5, a2dp wasnt at a good enough quality, and i had just spent money on making my apache replace my ipod with wireless headphones and a 4gig card, so i figured i needed it to work.

Good so far I haven't had any problem with the a2dp, it works great I just change the MaxSupportedBitPool = 128 Dword. BitPool = 56 Dword UseJointStereo = 2 Dword.

No skipping at all

can you please explain exactly how thats done?

During my brief stink with wm6, I had 0 problems with the AD2p stereo setting.

nevermind i found it HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Bluetooth\A2 DP\Settings

ok i changed my settings, reset my phone, but it still skips in wireless stereo mode and my phones slows to a stop.... i have iogear bt headphones i don't know the model name... but it works fine in wireless headset mode...

a2dp bt moto S9
 

Well, so far, so good...a bit of skip, gone after reset...true stereo out of the box, no reg tweak needed. Bass sucks (S9 issue) I think I'll spring for coreplayer as it has EQ.

Off Topic:
BTW, anyone remember what the reg tweak is for MSVC to work off the headset button?

i tried, and my Jabra BT620s skipped out, im mean after the first skip, it didnt come back. then i changed to these settings, and it skips, and by skipping, i mean plays for 3-5 seconds, then quits for 30-45 secs.

which one of those settings targets the skipping?

the sprint store guy told me there are 2 BT chipsets in use (6700) ,qualcom and another. he didn ot say which was the one that worked but it explaines the dispairity between users.

the chipset thing is still hearsay ya'all. I have tried the settings change, reset, rediscover, still only 5 seconds of stereo stream. initial play graps the headset for half a second, then I have to force the headset (590a) to reconnect. It won't hold -or be held.

I'm using the Jabra bt8010 headset and I also have the 'skip-out' problem where it spits out a few seconds of audio and then vanishes. The play/pause button on the headset works still, and when going from pause back to play, I get a micro-second of sound, but then dead air again. I'm going to try those settings and a reset to see what happens...

Sony Headset HBH-DS970
 

It works flawlessly for me - I am running Helmi's WM6 5.2.1620 Build 18125.0.4.2 ROM and using Sony Headset HBH-DS970.

Thank you Helmi = !

okay, that was a problem...after reset, I can't seem to unlock the phone now...enter the 4 digit code, but then I can't hit anything else...not 'unlock', not 'clr'. It still powers on and off, but there is no unlocking it. reset 4 times. I'm seeing a hard reset in my future...

edit:
okay...after several minutes of leaving it alone, I was able to get in and play some music. It got off to a shakey start...skipping for about 10 seconds, but then after that, I'd say the performance is much improved. It plays about 30-40 seconds and then skips for about a second. If it could keep this up, it would be tolerable.

I wasn't even able to get this level out of the 1.0.4 kitchen, so I'm very pleased.

just from the testing that angel12 and i did, this problem is somewhat intermittant. it seemed that if we deleted all paired devices and made sure no other bt devices were turned on within range it *sometimes* would work for a while but quite often would come back. it is definitely an issue as going back to 3.5 completely fixed it. also, we are both running exchange activesync to mail2web. are any others that are having this issue doing this?

Initally I had problems with the "2 seconds of music then nothing" issue and posted that
the A2DP was broken. Not entirely so...I'm listening to A2DP music now in WM6.

-Surfer

im running WM6 and the Motorola S9. i found a couple things to try after a couple hours a searching that seam to have helped. When i first started this whole bt stereo testing i was getting skips about every 25sec that lasted maybe 15 sec. Kind of anoying. after some changes i have got it to were music playes for an entire song without skipping. at about a song and a half i get a small 5 sec. from there it may skip again or play for a couple songs without skipping. i have usejointstereo set to 2, and - BitPool
- MaxSupportedBitPool both have been deleted. after these changes it seams bt for me plays rather nice.

http://forum.ppcgeeks.com/showthread...reless+headset
thread i found with the bt info

http://forum.xda-developers.com/showthread.php?t=308752
link from that thread about settings to improve bt connection.

I have verizon 6700 and I recently flashed to WM6. I just paired it with the Logitech bluetooth headphones and the music was clear.. no skipping or anything. I didn't make any adjustments to the registry entires..


I used the new HTC Audio manager as the music player..

While I'm highly skeptical that anyone at a Sprint store (or VZW or anyplace else) would know that, I think I've read here on ppcgeeks that there are 2 different hardware versions and thats why we have phones with bootloader 1.x and others with 2.x

Any of you guys that are more familiar with the insides of this thing want to comment on this?

I have an old pair of anycom bsh-100. I have never gotten the stereo function to work with 6700. I tried the pitpool joint stereo and MSB settings from earlier post and I am still skipping constantly :( I want these to work more than you can know. heheh any other suggested settings?

Multiple Hardware revisions
 

Yes, there are two versions of the 6700 hardware. I found out about this after buying a cheap 6700 refurb on eBay. It wound up being the 1st version which has problems with Verizon's EVDO coverage. VZW swapped it for a Ver.2 phone and that was that.

Haven't tried A2DP with this one on WM6, but I will later this week when I get my headset. Will post the results here.

I get the same problems on my phone. A few seconds of music and then nothing. It did work once several ROMs ago, but nothing since. I tried the BT toggle in the last rom and I could hear the open and close but no music.

a2dp bt stereo and wifi
 

Okay, here's one... afteer alot of screwing around trying to get my S9 and my wep200 working with MSVC (which, after a few time soft reset, one hard reset and one reflash are working) I'm listening to Miles, turn on wifi and Miles starts skipping like an eight year old girl at a hopscotch marathon. Turn off wifi, no skip...turn it on and it starts up again...

msbp=64
bp=32
jointstereo=2

any clues?

LOL!

thats interesting. i will test that out in a few.

I had the same problem after upgrading to helmi_c wm6 non my 6700, tried all settings and still skipped, installed sleuth's a2dpfix and it started working with no problems.

tko248/

what setting is it working with?
and how can you tell his fix is running?

mmm, i have replaced MS bluetooth Stack with Universal Broadcomm Bluetooth Satack, it work proply for 1 day of tests. no skips ( minimals) and sound quality is perfec. personally de broadcomm drivers are work for me, but with de Ms bt stack i never can hear with my nokia stero bt head set.

The name of file is UNSIGN_UNI1.7.6.0500.zip
search it on google. or resquest me to my mail sebaceo@yahoo.com, I send it to you.

sorry , my inglish is so bad.

i speak spanish. i only want to help

cualquier pregunta, si es en español, mejor...

Running the wifi radio at the same time at BT has always created skipping when in stereo mode...that isn't new to this ROM.

I removed both bitpool settings and added SampleRate 48000 dword value and installed the fix. How do I know its working, lol, well it hasnt stopped working since I aded the fix, before that it was skipping all the time. trust after trying to get it workign for hours, once it starts working you know immediately.

tko248/

^no, i installed it, and dont see it in task manager to tell.

Doesn't the "fix" cause severe battery drain?

IT WORKS!!!

installed the "slueth fix", removed the bitbools, added the sample rate, and joint stereo is 2.

freakin awsome!!!:headbang: =D>

**edit**:
the Slueth fix causes severe battery drain. i removed it, and with the above settings, i had results almost as good, just an occasional skip.

I am concerned about installing a "fix" as well after seeing various posts about its battery drain. I have tried every registry fix out there and nothing is working. I think this was a miss in the build. Maybe he can address it with the next one. Or if someone else figures something out without me having to install a cab, I would love to hear it.

So far my personal experience is running counter to the info floating around the net.


Let me explain.

A2DP worked pretty well out of the box. So of course I need to f#ck with it because I assume MS is incompetent. Anyway, IIRC the default setting is UseJointStereo=0. But from what I read @ XDAdev, this is monoX2.

To my ears, with the limited tracks I have in mp3 (I have not installed a thing as of yet) the default is in fact stereo and does not skip [much].

Can anyone confirm?

I am an hour of free time away from making my own stereo test...

OK, took less than an hour to whip a "phaser" test in audacity and unless my brain is wired wrong UseJointStereo=0 is in fact stereo and for the most part (99%) - does not skip. These are the default registry settings, and going from phone call to music player and back again works great.

I am leaving it to my ears, and they say satisfied.

then there must be some variation of chipsets / headset pickiness. i already deduced the same thing you did but no matter the setting, i still get the skipping.

For those with severe skipping issues, try this:

1) HKLM\Software\Microsoft\Bluetooth\A2DP\Settings
Bitpool 58
MaxSupportedBitPool 128
UseJointStereo 2

Hint: write down old settings if you want to go back

2) Soft Reset
3) Make sure your headset is paired
4) Go into BT Settings then devices and press and hold on your Stereo headset device and choose "Set as Wireless Stereo"
5) If it still skips, go back into BT Settings and uncheck "Turn on Bluetooth", hit OK
6) Go back into BT settings again, and check "Turn on Bluetooth" (for some reason using Cycle BT or using the Comm manager to cycle the BT doesn't seem to work for me)
7) then do step 4 again.

It will usually be solid once you get no skipping, and it will last all day or until you pair a different BT headset.

Lastly, the BT and Wifi share the same antenna. There is no way as far as I know to have BT and Wifi on simultaneously without a skipping issue.

One more thing, this is not my work, I read it somewhere on another forum, and unfortunately I can't give the right person credit for the work, because I don't remember who figured it out :(

Thanks. I'll give it a try.

I can confirm the WiFi/A2DP skipping.

For me, it happens 100% of the time if both are enabled.

-Surfer

can someone try normal headphones on this rom i only get 1 side to work when plugging them in.
mike

I don't have WM6 yet, but that right there clears up almost all of my BT audio problems. I mean, not even a soft-reset will or re-pairing will do, but cycling that setting will. I can only figure that it must reset a corrupt setting in the BT stack that even persist after a soft-reset.

XV6700 with hacked A2DP stack and Motorola HT820

BTW, anyone try hemi's WM6 with a HT820?