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Hello all,
I have a very odd problem that I'm hoping others may have run into and solved. When I'm playing audio over the A2DP data path to my car, the audio randomly will drop for half a second, then gradually comes back to full volume over perhaps a second of time. Speaking like a programmer, it's almost like something mutes the audio and then slides the volume up in a loop or something.
This problem did not occur on Bombaridier and the older Synergy Kernel, however it is happening with the newer kernel on Juggernaut v5, Paradox and SlickMOD, leading me to believe something in the kernel or newer system binaries might be causing it. This behavior happens in Pandora, Amazon MP3 and also the stock Music app.
Thinking that maybe a stray notification was the problem, I've tried disabling notifications in all of the apps I know of that notify, I've also tried switching the phone into vibrate and finally into full-silent, but it does not seem to affect the behavior. I have found no likely cause. I wish I was able to log alsa changes; maybe a script running constantly with something like:
Code:
while (true)
do cat /proc/alsa/some_alsa_status_entry >> /tmp/alsalog
sleep 1
done
Does anyone else have any ideas as to what this might be? It's really annoying!
Thanks in advance,
Pete
Dirty Pete said:
Hello all,
I have a very odd problem that I'm hoping others may have run into and solved. When I'm playing audio over the A2DP data path to my car, the audio randomly will drop for half a second, then gradually comes back to full volume over perhaps a second of time. Speaking like a programmer, it's almost like something mutes the audio and then slides the volume up in a loop or something.
This problem did not occur on Bombaridier and the older Synergy Kernel, however it is happening with the newer kernel on Juggernaut v5, Paradox and SlickMOD, leading me to believe something in the kernel or newer system binaries might be causing it. This behavior happens in Pandora, Amazon MP3 and also the stock Music app.
Thinking that maybe a stray notification was the problem, I've tried disabling notifications in all of the apps I know of that notify, I've also tried switching the phone into vibrate and finally into full-silent, but it does not seem to affect the behavior. I have found no likely cause. I wish I was able to log alsa changes; maybe a script running constantly with something like:
Code:
while (true)
do cat /proc/alsa/some_alsa_status_entry >> /tmp/alsalog
sleep 1
done
Does anyone else have any ideas as to what this might be? It's really annoying!
Thanks in advance,
Pete
Click to expand...
Click to collapse
I second this as an issue that I have run across quite often. I use this BT for music in my car on a daily basis. I usually get a .5 second audio drop out at lest twice each song. Seems to be about every 2 minutes if I would have to guess.
I have just learned to get used to it but it would be fantastic if this could be resolved.
I've also tried fiddling with the CPU governor ant the IO scheduler, but to no avail. Im wondering if there is a bug in the bluetooth module introduced in the latest kernel.
Sent from my SGH-T989 using xda premium
Works great for me and I've tried just about every rom and kernel over clocked and under clocked. I had it skip once before, I rebooted and it was fine.
Sent from my SGH-T989 using Tapatalk
I'll give this a bump, because I have the exact same problem. Never had this problem on my Blackberry (sad), in the same car. OP has described the issue better than I could have.
scotty-dont said:
I'll give this a bump, because I have the exact same problem. Never had this problem on my Blackberry (sad), in the same car. OP has described the issue better than I could have.
Click to expand...
Click to collapse
Thanks for posting, out of curiosity, what ROM and kernel are you running? Maybe we can find some sort of similarities...
My phone's currently running SlickMOD 3.1 with kernel "2.6.35.14"
-Pete
I've tried black edition and warfare, never had any issues
tomasitoc said:
I've tried black edition and warfare, never had any issues
Click to expand...
Click to collapse
What version of the kernel on your warfare mod? SlickMOD uses the Darkside 2.6.35.14 kernel.
Dirty Pete said:
Thanks for posting, out of curiosity, what ROM and kernel are you running? Maybe we can find some sort of similarities...
My phone's currently running SlickMOD 3.1 with kernel "2.6.35.14"
-Pete
Click to expand...
Click to collapse
Hi Pete,
I've noticed it on Digital Warfare 2.5.1 and BeastMOD 5.0 ("Test 13"), using TDJ's personal kernel and the same 2.6.35.14 above, respectively.
I'll post to Melvin on rootzwiki in the hopes that he can investigate maybe.
It might be better to bring this up in other sections as well. I came across this post by accident while researching extended batteries.
scotty-dont said:
It might be better to bring this up in other sections as well. I came across this post by accident while researching extended batteries.
Click to expand...
Click to collapse
I originally posted it in a different forum, but a moderator kicked it over here. It's not really an accessories question as I'm pretty sure it's a kernel bug, but I wasn't about to argue with site moderators on a forum like this where I'm definitely the new kid on the block.
That being said, if you have some other suggestions as to where we can ask about this, I'm all ears and would be more than willing to help debug/diagnose. I've been a Linux user since '96, so I'm unafraid of poking around in the kernel's guts to get answers.
Pete
Yeah that's the problem with this place... and why I have less than 10 posts.
On second thought, I'm tempted to just wait. It sounds like we will have a proper ICS rom and true kernel on about April 25th, to coincide with the launch of the HTC One S on T-Mobile. I can't find the threads. Hopefully then it will be an issue of the past.
I'm glad I'm not the only one though.
Just a thought....I don’t think this has anything to do with CPU performance
Hi, I have a Galaxy 2s with this exact problem but I wonder if I might offer a suggestion as to what could potentially be the cause. I have no idea how to fix it but I’m hoping that what I share here might help someone who knows more about the way these things work to be able to solve the problem.
I have spent much of my career working in Broadcast Radio, the problem I have heard my phone have with audio dropouts followed by either a ramp up of volume back to the previous level OR an audio dropouts followed by a momentary slight speed shift in the audio playback (sounds a bit like an old cassette recorded when the batteries are starting to fail) many people would probably not notice the later problem because it is very subtle and you have to know what you’re listening for.
Anyway, I believe this could be caused because of a lack of word clock sync between the phone and the bluetooth receiver. I say this because there have been times when I have had digital audio devices such as CD players that are connected to an audio console or digital amplifier and with both devices free running in terms of their clock synchronisation exhibit almost exactly the same symptoms.
You see all digital audio devices require that the audio data be put into frames much the same as regular Ethernet data is transmitted around a network is put into frames, however in order for the audio to be at the correct pitch and speed generally speaking both the playback device (Phone) and the receiving device (Bluetooth receiver) need to have the same word clock, otherwise you end up with the two devices running freely and the audio frames wont by in sync.
Depending on the Error correction implemented (sample rate conversion) on the receiver you can get really odd audio results. I think that this is what is causing this problem. Basically the Bluetooth receiver and the phone aren’t in sync so every few minutes you get a drop out.
It doesn’t seem to happen when you are talking on the phone which makes me think that when you have a call connection as this is bi-directional, the phone is probably synchronised to the Bluetooth device word clock. But when you are listing to music the connection is mono-directional so there is no sync.
Anyway just a thought. Maybe someone out there who understands the way these units synchronise can figure out a fix.
Mine has random just disconnects from the phone altogether. I have Jawbone Era, Voyager Pro Plus, and a Jabra Wave + and all will just randomly disconnect and have a hard time connecting back to phone audio. It will reconnect to media pretty much first time but won't show coonected to phone audio for some reason unleass I turn off BT, turn off headset, and sometimes even re-boot phone.
I am sure you guys have ruled this out, but this was a common problem with bluetooth audio on android. I haven't had the problem for a long time, but I used to have to disable wifi during my commute due to this dropout. Can you turn off wifi and see if the issue still happens? I was able to identify it by changing the time between wifi scan. If you had custom rom settings you could push it out and sure enough, my bluetooth dropouts happened on the same schedule (2s, 10s, more)
Just a thought.
I had this issue when I tried out juggernaut, so I went right back to Bombardier with Synergy kernel. Anyone have this on any if the ICS roms?
Sent from my beastly Galaxy S 2.
Shane_pcs said:
I am sure you guys have ruled this out, but this was a common problem with bluetooth audio on android. I haven't had the problem for a long time, but I used to have to disable wifi during my commute due to this dropout. Can you turn off wifi and see if the issue still happens? I was able to identify it by changing the time between wifi scan. If you had custom rom settings you could push it out and sure enough, my bluetooth dropouts happened on the same schedule (2s, 10s, more)
Just a thought.
Click to expand...
Click to collapse
I disable my wifi while I'm in the car, so this wasn't my issue. Thanks for the suggestion though!
I used to have occasional a2dp problems, however I have not had them since I started using various ICS releasese. The problems I would occasionally have would be a total loss of bluetooth till I rebooted the phone.
Since using Infamous I haven't had the problem other then for some odd reason occasionally having to reenter the PIN #
I'm using a Scoche Bluefusion in my car.
It had to be the fuse.
Sent from my SGH-T959 using xda premium
After upgrading to DARKSIDE's latest ICS rom, this problem has not recurred. I'm assuming that my early thought was correct in that it was some kind of kernel bug.
Dirty Pete said:
After upgrading to DARKSIDE's latest ICS rom, this problem has not recurred. I'm assuming that my early thought was correct in that it was some kind of kernel bug.
Click to expand...
Click to collapse
With Darkside and the stock ROM I have not only this problem, but crackly/staticy audio and my phone and car won't communicate once I've shut the car off. I have to completely re-pair the phone. They're bugs in 4.0.3, which Samsung dumped off on us.
4.0.4 via CM9 already doesn't exhibit the connection issue (I have to turn Bluetooth on and then off though) but I'm not sure about the others yet.
I know I had a problem with WIFI dropping every few minutes and disconnecting/reconnecting all the time. Causing streaming issues, internet issues and freeze issues if on lockscreen. Well, I have fixed this for myself and wanted to share.
To insure this doesn't happen, just follow these steps:
1. Dial *#0011#
2. Hit the left menu softkey to bring up the menu, and select 'Wifi'
3. Turn OFF the 'Wifi Power Saving'
4. Exit, and Reboot.
Ever since then, I haven't had issues. I am on AT&T GS3. If you are having this issue, please report back here with your model and if this fix worked.
Just trying to help. Good day all!
I'm not entirely certain this was happening, but had noticed some oddities. Not as bad as your experience, however.
But I did make the change to see how it would affect battery life. I am on the Sprint network.
----
Brought to you by my ghetto ProClip mount http://m.youtube.com/watch?v=jH3XoLqfXsY
Optimizer said:
I know I had a problem with WIFI dropping every few minutes and disconnecting/reconnecting all the time. Causing streaming issues, internet issues and freeze issues if on lockscreen. Well, I have fixed this for myself and wanted to share.
To insure this doesn't happen, just follow these steps:
1. Dial *#0011#
2. Hit the left menu softkey to bring up the menu, and select 'Wifi'
3. Turn OFF the 'Wifi Power Saving'
4. Exit, and Reboot.
Ever since then, I haven't had issues. I am on AT&T GS3. If you are having this issue, please report back here with your model and if this fix worked.
Just trying to help. Good day all!
Click to expand...
Click to collapse
Didnt notice a difference and after a reboot it turns back on.
Sent from my SPH-L710 using xda premium
I don't have issues at home but I do with the WiFi at work so I'll try it tomorrow and let you know how it works out. It disconnects and reconnects every 5 seconds and I'm not exaggerating either.
I think the WAP may be a little wonky but my HTC Desire HD had no problem with it.
Mine turned back on after reboot as well.
----
Brought to you by my ghetto ProClip mount http://m.youtube.com/watch?v=jH3XoLqfXsY
I am working through logcats as well. I reverted the setting to mimic the problem, and I am going to look at logcats.
If I can see what is exactly triggering it, I will make a flashable fix.
In the meantime, I have another S3 here that I have the power save off on and I still haven't seen a drop yet. So preliminary, I think this is a temporary fix until I can find out root problem.
Hope you find a fix
Optimizer said:
I am working through logcats as well. I reverted the setting to mimic the problem, and I am going to look at logcats.
If I can see what is exactly triggering it, I will make a flashable fix.
In the meantime, I have another S3 here that I have the power save off on and I still haven't seen a drop yet. So preliminary, I think this is a temporary fix until I can find out root problem.
Click to expand...
Click to collapse
I have a similar problem. Mine doesn't disconnect per-se, however I did notice while browsing through Flipboard that I wasn't getting any signal sometimes when trying to access a page with a lot of content. Page loading came to a stop. Backed out several times and retried until I finally gave up. This was on my home wifi. I'll try your work-around for a few days. T-Mobile version.
EDIT: This may be just a FlipBoard quirk.
I will try this when I get home. I have a problem on my Sprint SGS3 where it stays connected to wifi but the internet won't actually work (can't browse internet, use play store or youtube, etc). Wifi never sleeps, it's always on. It never disconnects from the network, it just stops receiving and sending data. So we'll see if this does anything for it.
you guys dont have an issue where the display doesnt timeout after turning off the power save?
display won't time out from turning off the wifi power save. Totally unrelated. I am trying to mimic the problem right now.
If anyone is having the issues of the reconnnecting every few seconds and can logcat it for me, PM me please. I can't seem to mimic the problem since the fix.
Optimizer said:
display won't time out from turning off the wifi power save. Totally unrelated. I am trying to mimic the problem right now.
If anyone is having the issues of the reconnnecting every few seconds and can logcat it for me, PM me please. I can't seem to mimic the problem since the fix.
Click to expand...
Click to collapse
It happens randomly and especially after the phone goes into deep sleep with wifi on
nubbert said:
I don't have issues at home but I do with the WiFi at work so I'll try it tomorrow and let you know how it works out. It disconnects and reconnects every 5 seconds and I'm not exaggerating either.
I think the WAP may be a little wonky but my HTC Desire HD had no problem with it.
Click to expand...
Click to collapse
Turning off power save does indeed fix the WiFi issue at work. As posted before, restarting the phone turns power save back on and the problem is back.
Optimizer said:
display won't time out from turning off the wifi power save. Totally unrelated. I am trying to mimic the problem right now.
If anyone is having the issues of the reconnnecting every few seconds and can logcat it for me, PM me please. I can't seem to mimic the problem since the fix.
Click to expand...
Click to collapse
PM sent.
Going through multiple logcats now.
I am seeing even with power saving on though, the problem is still there. It is still disconnecting from WIFI and going back to the data network.
I am sifting through ALOT of code, as some of these log cats are extremely long.
Give me til tonight and I should have a reason at least to why it's doing it by comparing on vs off on powersave.
I have a request, anyone WITHOUT this issue, can you send me a logcat with your WIFI turned on?
Optimizer said:
Going through multiple logcats now.
I am seeing even with power saving on though, the problem is still there. It is still disconnecting from WIFI and going back to the data network.
I am sifting through ALOT of code, as some of these log cats are extremely long.
Give me til tonight and I should have a reason at least to why it's doing it by comparing on vs off on powersave.
I have a request, anyone WITHOUT this issue, can you send me a logcat with your WIFI turned on?
Click to expand...
Click to collapse
How do i get a logcat?
Sent from my SPH-L710 using xda premium
Search the forum for logcat help. I am on the phone at work or I'd link you
Sent from my SAMSUNG-SGH-I747 using xda app-developers app
Thanks for this. I was about to return the phone because I kept losing ability to connect to any WAPs after sleep mode kicked in. Mine is a Verizon S3.
I've seen this as well. Almost always after deep sleep. Most of the time I have to cycle Wifi to get it connected again every so once in awhile it will connect again on its own. Regardless of the settings that I put in "advanced" under wifi it will do this. Even if I have it set to keep alive never, always or plugged in it doesn't matter.
I still need a logcat from someone NOT having these issues.
Right now from looking through over 10 logcats, I am seeing that it's usually happening on routers that are encrypted with WEP and WPA, unfortunately the 2 most popular forms of wireless security.
That being said, users that are on 'open' networks do not seem to be losing access.
2 things.
1. Can someone PM me a logcat of them successfully connecting to wifi and NOT having drops. I don't care how long the logcat is.
2. When you post about your problems, please tell me what carrier and what type of encryption is being used on the router (if any)
I have been comparing and in each instance, WIFI is going into sleep, turning on data, and then having a problem turning back on.
I think it's an attempt to save power, but only it is not because switching from WIFI to data back to WIFI so much is a real drainer.
Still working on maybe disabling the power save by using a init.d script, to prevent power save mode from coming back on when rebooted, because I know alot of users are saying after disabling it, it is just reapplying on reboot.
BACK TO LOGCATS FOR ME. :/
solehjeff said:
How do i get a logcat?
Sent from my SPH-L710 using xda premium
Click to expand...
Click to collapse
http://forum.xda-developers.com/showthread.php?t=1616059
I am finding youtube videos so slow slow to start and continuously stopping to download the file, I never had issues like this with my desire HD or HD2. Although the screen is so superior on the one X it is completely spoiling the experience having to wait for 10-15 seconds to wait for the video to begin and the to have the video pausing every 5 secs. IS this an issue with the phone or the wifi connection I am using. I have unchecked the high quality on mobile in settings but to no avail. Any help appreciated
eyeofthetiger said:
I am finding youtube videos so slow slow to start and continuously stopping to download the file, I never had issues like this with my desire HD or HD2. Although the screen is so superior on the one X it is completely spoiling the experience having to wait for 10-15 seconds to wait for the video to begin and the to have the video pausing every 5 secs. IS this an issue with the phone or the wifi connection I am using. I have unchecked the high quality on mobile in settings but to no avail. Any help appreciated
Click to expand...
Click to collapse
no problems here mate
youtube works perfectly fine... may be ur wifi has slower connection or may be some problem with wifi drivers of ur phone
which ROM are u using??
vivek_bhoj said:
no problems here mate
youtube works perfectly fine... may be ur wifi has slower connection or may be some problem with wifi drivers of ur phone
which ROM are u using??
Click to expand...
Click to collapse
stock android 4.0.3
I have the exact same problem, latest officiall update: stock 4.0.4 with sense 4.1
Youtub constanstly keeps stopping and I have to wait for download
It is not related to my internetconnection
I had the same problem on previous SW version as well....
The phone is not rooted
Just checked, it's fine here, buffering at over double real time speed, on a hd video. 1.29.708.15.
To be honest, the phone doesnt make that much different to the speed of a loading video.
Make sure its using WiFi and not data to load the video.
Also make sure a computer/laptop doesnt do it.
If it does then your WiFi needs to be quicker
Wilks3y said:
Also make sure a computer/laptop doesnt do it.
If it does then your WiFi needs to be quicker
Click to expand...
Click to collapse
if you do do this test, do it on wifi, in the same place you would normally do it on your phone. don't cheat by plugging in the cable.
lawrence750 said:
if you do do this test, do it on wifi, in the same place you would normally do it on your phone. don't cheat by plugging in the cable.
Click to expand...
Click to collapse
Yes...
I didn't mean put your laptop by your router, and run down the road with your phone?
Haha
Stock 1.29 and YouTube works perfect when I am on 3.2mbps speed WiFi and it buffers when I am slow net. It is depends on WiFi .
Sent from my HTC One X using Tapatalk 2
Wilks3y said:
Yes...
I didn't mean put your laptop by your router, and run down the road with your phone?
Haha
Click to expand...
Click to collapse
lol, not to say that this applies to the OP, but some people do need very very very specific instructions, i bet you 98% of people would do just the above lol.
eyeofthetiger said:
I am finding youtube videos so slow slow to start and continuously stopping to download the file, I never had issues like this with my desire HD or HD2. Although the screen is so superior on the one X it is completely spoiling the experience having to wait for 10-15 seconds to wait for the video to begin and the to have the video pausing every 5 secs. IS this an issue with the phone or the wifi connection I am using. I have unchecked the high quality on mobile in settings but to no avail. Any help appreciated
Click to expand...
Click to collapse
I believe yours is an isolated problem. My friends' and mine are perfect; plays INSTANTLY, videos are crisp, and continue to be so all the way. This is over WiFi, and I play mostly 1080p or 720p when available.
So, check your hotspot...maybe you have a free-loader in your hood
Mine plays totally fine 8Mbps down, with ARHD 9.3.1.
Only thing i've found with it since i got my HOX, was the constant stuttering on sound. Stopped using it now as its annoying,
It depends on the video IME. Even on my hardwired desktop with a 60meg connection, youtube often pauses to buffer.
I was hoping this would be fixed in the 4.4.2 update but it appears to still be there. While listening to anything in my vehicle with bluetooth A2DP the audio seems to cutout, like a bad connection. The song continues to play and sometimes I see the information on the radio screen disappear, as if the phone lost connection.
This happens no matter where I place the phone. Normally it sits in the storage pocket just below the radio but also happens in the mount on my dashboard as well as my center console.
It seems to happen less often if I plug in the charger, and even less if I force the screen to stay awake. I have not had this issue with my Sensation 4G or my Galaxy S3.
Any help is appreciated.
Zylograth said:
I was hoping this would be fixed in the 4.4.2 update but it appears to still be there. While listening to anything in my vehicle with bluetooth A2DP the audio seems to cutout, like a bad connection. The song continues to play and sometimes I see the information on the radio screen disappear, as if the phone lost connection.
This happens no matter where I place the phone. Normally it sits in the storage pocket just below the radio but also happens in the mount on my dashboard as well as my center console.
It seems to happen less often if I plug in the charger, and even less if I force the screen to stay awake. I have not had this issue with my Sensation 4G or my Galaxy S3.
Any help is appreciated.
Click to expand...
Click to collapse
Funny thing is I didn't have this issue at all back on 4.3, but do have it now with 4.4.2
Yay for 'upgrades'
Try turning wife off if it's on.
stevessvt said:
Try turning wife off if it's on.
Click to expand...
Click to collapse
I have tried every combination of different settings and the only thing that seems to help, although does not resolve altogether, is to plug in the charger and tell the screen to stay on during charging. May be something related to the sleep mode putting the CPU at too low of a minimum.
I am looking at other stereos for my vehicle as it may be an issue with the stereo just not being fully compatible with the newer bluetooth version on the Note 3. I need to test this to be sure.
I have the same issue. My screen is always on and charging but it still stutters on occasion. I used to have the HTC One and it had the same issue. I don't think there is a fix except to try a custom rom.
hawkye said:
I have the same issue. My screen is always on and charging but it still stutters on occasion. I used to have the HTC One and it had the same issue. I don't think there is a fix except to try a custom rom.
Click to expand...
Click to collapse
I am using the Sony DSXS310BTX, what about you?
Zylograth said:
I am using the Sony DSXS310BTX, what about you?
Click to expand...
Click to collapse
I have the older 300BTX. One thing that you made me realize is that on 4.3 I was running leankernel the whole time, and with KitKat I was running the stock kernel until this morning.
Going to the gym in an hour and I'll test the bluetooth today to see if switching kernels fixes the issue.
*EDIT*
Didn't skip on me at all on the way home today. This leads me to believe that your skipping problem is kernel-related. Give leankernel a try and let us know if that fixed it for you too?
I was just going to post the same as Kalm. I tried the new v2.0 of LeanKernel and no stutter. Also my Bluetooth MAP is working consistently again with my Ford Sync system. I played about 20mins of music on my Jawbone Jambox with no stutter also.
think this is something specific to a chip. I can stream pandora with pandora control and stream pandora and music over str8 bluetooth via hondalink with no issue.
I think I am going to wait and see what happens when I upgrade to the S5 in a few weeks. If the problem persists I will probably start looking at new head units for my vehicle. I am already eyeing the Pioneer AppRadio 3 LOL
Zylograth said:
I think I am going to wait and see what happens when I upgrade to the S5 in a few weeks. If the problem persists I will probably start looking at new head units for my vehicle. I am already eyeing the Pioneer AppRadio 3 LOL
Click to expand...
Click to collapse
Didn't have any luck with a different kernel?
Kalm_Traveler said:
Didn't have any luck with a different kernel?
Click to expand...
Click to collapse
I am trying to remain stock, once I start flashing ROMs and Kernels it becomes an addiction for me LOL
In short I have the problem in said video:
https://www.youtube.com/watch?v=uTylW2ElNzo
WIFI is sporadic and connects but after screen goes off it can mess up again, and restarting sometimes does not fix it. Is there a way to resolve it? I disabled Power Save, Wifi Direct & Scanning. But wifi wants to go on & off option-wise by itself still.
Do you have an custom kernel or something like that? I'm on the road since then I can't watch the youtube link right now.
Ryven said:
Do you have an custom kernel or something like that? I'm on the road since then I can't watch the youtube link right now.
Click to expand...
Click to collapse
I do. However it was happening stock (seller mentioned it sometimes had wifi issues but....never said this bad)
Do you have synapse or anything similar installed? Maybe there's an configuration option to fix it. I'm beginner by myself so im not totally sure but I think I had an custom kernel which came with synapse where I've been able to change wifi settings