The Headphone bug

[Guest -Wii-]

This really does do my nut in I wondered if anyone has managed to solve it?

So here is the problem, I plug my headphones in and music starts randomly playing. So I turn it off. I put the radio on (BEEBPLAYER) and then put the phone in my pocket, and about 2 minutes later, music starts overlapping, So I take it out my pocket and the media player is off and away again, So I turn it off. And about 2 minutes later?

Is there anyway of stopping this happening? its a right pain

[Guest twics]

This really does do my nut in I wondered if anyone has managed to solve it?

So here is the problem, I plug my headphones in and music starts randomly playing. So I turn it off. I put the radio on (BEEBPLAYER) and then put the phone in my pocket, and about 2 minutes later, music starts overlapping, So I take it out my pocket and the media player is off and away again, So I turn it off. And about 2 minutes later?

Is there anyway of stopping this happening? its a right pain

I have the same problem cant watch youtube or use browser without it playing, I stop it go back to youtube and it plays again :)

[Guest channi3]

What I have had to do is delete all mp3 files out and then play the videos. This has helped me solve the problem.

I also had to uninstall last.fm too as it tried to automatically start to record my playlistism data.

[Guest 205er]

If you do not need the music app:

delete the file /system/app/GoogleMusic.apk

[Guest -Wii-]

If you do not need the music app:

delete the file /system/app/GoogleMusic.apk

Is that on the SD? or do I have to access the phones files? I have no idea how to access the phones files, I am asuming if I do that I can then just get a different Music app and Problem Solved?

[Guest 205er]

I used ES File Explorer (but i think u need a rooted phone to delete system files).

[Guest -Wii-]

I used ES File Explorer (but i think u need a rooted phone to delete system files).

what exactly does rooted phone mean?

how do I know if i have a rooted phone?

How do I go about rooting the phone?

Thanks :-)

[Guest 205er]

Read this forum ;-)

http://android.modaco.com/content/t-mobile...t-a-custom-rom/

[Guest -Wii-]

Cheers I will give it a go

[Guest 205er]

I recommend to install this custom rom:

http://android.modaco.com/content/t-mobile...-vanilla-style/

it is much faster then this stock rom the pulse came with. Give it a try

[Guest -Wii-]

I recommend to install this custom rom:

http://android.modaco.com/content/t-mobile...-vanilla-style/

it is much faster then this stock rom the pulse came with. Give it a try

I rooted the phone (I think) and it still won't let me delete music b11 file

[Guest jonathonf]

Right, there must be a solution. I'm going to have a dig through the udev rules on the phone and see if there's one for a headphone jack event.

This happens on my Pulse running 1.7 Vanilla.

[Guest meinnit]

I dont get this problem but I do notice that the Music app starts in the background (not actually in the foreground) AFTER I take out the headphone! Strange! I'm using MCR 1.7 Vanilla (should really put this in my profile!)

[Guest jonathonf]

So I spent the last hour debugging this on my phone. There are no udev rules but there is an audio event handler. The music player is listening to a MediaKey keypress event and then coming starting to play.

Before deleting the Music.apk I thought I would try clearing its data (Settings, Applications, Manage applications, Music, Clear Data). Up to the point I wrote this it seemed to have solved the problem, but as I type it's just started back up again. Grr.

Hmm. There's an error message about the wrong keymap. This might be the one. It's looking for msm-handset but falls back to surf_handset:

W/KeyCharacterMap(13300): Error loading keycharmap file '/system/usr/keychars/msm-handset.kcm.bin'. hw.keyboards.0.devname='msm-handset'

W/KeyCharacterMap(13300): Using default keymap: /system/usr/keychars/surf_keypad.kcm.bin

I/ActivityManager( 1121): Start proc com.android.music for broadcast com.android.music/.MediaButtonIntentReceiver: pid=13508 uid=10022 gids={3003}

If the keycodes are different then the keymap will be triggering a Play event rather than just an JackInserted (or whatever) event.

Next step is to check this and try and remap the keys. Fun.

[Guest -Wii-]

So I spent the last hour debugging this on my phone. There are no udev rules but there is an audio event handler. The music player is listening to a MediaKey keypress event and then coming starting to play.

Before deleting the Music.apk I thought I would try clearing its data (Settings, Applications, Manage applications, Music, Clear Data). Up to the point I wrote this it seemed to have solved the problem, but as I type it's just started back up again. Grr.

Hmm. There's an error message about the wrong keymap. This might be the one. It's looking for msm-handset but falls back to surf_handset:

W/KeyCharacterMap(13300): Error loading keycharmap file '/system/usr/keychars/msm-handset.kcm.bin'. hw.keyboards.0.devname='msm-handset'

W/KeyCharacterMap(13300): Using default keymap: /system/usr/keychars/surf_keypad.kcm.bin

I/ActivityManager( 1121): Start proc com.android.music for broadcast com.android.music/.MediaButtonIntentReceiver: pid=13508 uid=10022 gids={3003}

If the keycodes are different then the keymap will be triggering a Play event rather than just an JackInserted (or whatever) event.

Next step is to check this and try and remap the keys. Fun.

Its a joke to be honest, such a fundamental flaw in the phone, very disappointed this wasn't flagged up in testing the phone. why would you want to listen to the radio without headphones? you can't it won't let you, and I can't even delete the file anyway why is that?

[Guest HunteronX]

I'm not sure if this is free, but you can use an app called Autostarts on the market to disable apps running when certain events happen - just like this.

I think you also need root for it - if you can, try it and see if it helps. :)

[Guest jonathonf]

Bingo. Though it costs 60p. There should be a way of doing this for free.

--edit

The author has made the source code available for free, at least:

http://github.com/miracle2k/android-autostarts

Edited January 28, 2010 by jonathonf

[Guest JimNu]

This was reported soon after the pulse came out, iirc it's when the included headphone adapter is used but it doesn't happen with the included headphones. If this is the case with you, might be worth getting a different adapter.

[Guest jonathonf]

It's fine as long as you use a three-pin jack. As soon as you use a two-pin the listener is triggered - and it doesn't matter if it's a two-pin adapter or a three-pin adapter and two-pin headphones.

[Guest starkos]

It's fine as long as you use a three-pin jack. As soon as you use a two-pin the listener is triggered - and it doesn't matter if it's a two-pin adapter or a three-pin adapter and two-pin headphones.

Sorry for being a bit thick, but can someone tell me what a 3 pin and 2 pin jack is in relation to headphones? And how can you tell if a 2.5/3.5 pair of headphones are 2/3 pin??

[Guest Spook Tooth]

He means conductor - the phone comes with headphones which have 4 conductors, 2 rings, one tip and one sleeve. Normal headphones usually have 3 conductors - tip, ring and sleeve or TRS.

Smartphones (and some other devices) have an additional conductor for microphone use, so are TRRS. This is why the bug doesn't occur when using the provided headphones with the mic built in as it uses a 4 conductor plug.

I guess we need to all be using or getting hold of earphones with 4 conductors or some kind of adaptor that stops this ruddy bug from raising its oh so annoying head.

I learned all about the subject from Wikipedia!

[Guest jonathonf]

I don't know where I picked up the two- and three-pin naming scheme; looking at that Wikipedia article I think I meant two- and three-channel (left+right, left+right+mic).

Reading on, though, "The selected pin assignment" and "Professional audio equipment uses XLR connectors which mate the ground signal on pin 1 first." I might have picked it up from Sound on Sound. No idea. But the point is the same. :)

--edit

http://pinouts.ru/connector/3_pin_stereo_p...connector.shtml

No, I was completely wrong. Three pin is TRS/three conductor. It's back from using mixers with two-pin inputs (mono jack per channel) compared to a three-pin jack (single stereo jack for two channels). I'm happy now.

Edited January 28, 2010 by jonathonf

[Guest starkos]

Ah right thanks both of you above, did search around but couldn't really find what i was looking for. Yea I did initially think it was the channel thing but couldn't see the link, guess I didnt look hard enough :)

[Guest twics]

This was reported soon after the pulse came out, iirc it's when the included headphone adapter is used but it doesn't happen with the included headphones. If this is the case with you, might be worth getting a different adapter.

Thanks for the info on this, didnt think of just trying the headphones that came with the phone, this worked for me too but what if you dont want to use the headphones that came with the phone, has anyone tried it with a different adaptor?

[Guest Spook Tooth]

I don't know where I picked up the two- and three-pin naming scheme; looking at that Wikipedia article I think I meant two- and three-channel (left+right, left+right+mic).

Reading on, though, "The selected pin assignment" and "Professional audio equipment uses XLR connectors which mate the ground signal on pin 1 first." I might have picked it up from Sound on Sound. No idea. But the point is the same. :)

--edit

http://pinouts.ru/connector/3_pin_stereo_p...connector.shtml

No, I was completely wrong. Three pin is TRS/three conductor. It's back from using mixers with two-pin inputs (mono jack per channel) compared to a three-pin jack (single stereo jack for two channels). I'm happy now.

Or maybe mono-balanced? Meaning the same monaural signal sent to both ears rather than a true (2 signal) stereo image?