New Piston V3 Buttons On Redmi 2 Pro Do Not Work


(b_a)

(b_a)

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Jan 13, 2016
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My hardware:
Redmi 2 Pro (2 GB RAM; wt86047 / HM2014813)
Xiaomi Piston V3

My software:
MIUI 8 weekly ROM 6.8.25
Also occurred on MIUI 8 weekly ROM 6.6.16/17/18
All installed over the old ROM, then Dalvik/Cache wipe.

The bug:
Using any button on the Piston V3 remote is interpreted as a long-press.
Examples:
  • Pressing volume up once, raises the volume to its maximum level (showing the safe volume warning in between). All other 2 buttons are now blocked and cannot be used.
  • Pressing the middle button once shows the Google Voice Search window instead of acting like a play button.
  • Pressing the volume down button once, decreases the volume to zero. The two other buttons are now blocked and can only be used after a while
The logs (in Excel format for easy filtering):

Feel free to contact me if you need more info or you need me to for tests.
 
Last edited:
I have the same issue with Redmi 2 Pro and Xiaomi In-Ear Pro (Hybrid). But I use stable version MIUI. It occurs since V7.5.X.X till V8.0.3.0. No fix was found. Now I use stable V7.3.4.0. Last one does not contain this bug.
 
Last edited:
Same bug at my phone.
Redmi 3 pro.
I am using latest xiaomi.eu beta rom (6.9.29).
I have tried with a samsung and also a xiaomi handset, same bug.
 
(b_a) said:
Which headphones do you use by the way?
Click to expand...
I use the Xiomi Piston Hybrid.

Archix said:
Same bug at my phone.
Redmi 3 pro.
I am using latest xiaomi.eu beta rom (6.9.29).
I have tried with a samsung and also a xiaomi handset, same bug.
Click to expand...
I also tried my Hybrids with a Samsung S4 on Android 5.0.1 -> works fine.

This problem has been addressed several times on the MIUI forum, too.
 
Last edited:
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I compared the logfiles when pressing vol+/vol- buttons and the headset buttons. I even compared the 6.6.30 logfile with the 6.7.7 logfile. Unfortunately I cannot see any differennce causing the error.

I wonder if this is the right forum as the error hasn't anything to do with xiaomi.eu but with the MIUI developer ROM itself.
 
Seems that in 6.7.7 there has been a "change of style" in addressing the headphone. In my 6.7.7 log the line
Code: 
W/ViewRootImpl( 3379): Cancelling event due to no window focus: KeyEvent { action=ACTION_UP, keyCode=KEYCODE_VOLUME_UP, scanCode=115, metaState=0, flags=0x28, repeatCount=0, eventTime=85680, downTime=85440, deviceId=13, source=0x101 }
appears several times. In the 6.6.30 log these lines are missing.

In my opinion the information wheater the headphone button is released is missing in 6.7.7:

In the first code snippet (6.6.30, first two lines) you can see that the vol- button is pressed (keyCode:25 down:true ) and released (keyCode:25 down:false). The volume is lowered to 0.055912.
Code: 
D/BaseMiuiPhoneWindowManager( 3297): keyCode:25 down:true 7803649 7803649 isScreenOn:false
D/BaseMiuiPhoneWindowManager( 3297): keyCode:25 down:false 7803649 7803649 isScreenOn:false
I/PhoneStatusBar( 7124): remove music last volume when volume is changed by others
D/audio_hw_primary(  347): out_set_parameters: enter: usecase(0: deep-buffer-playback) kvpairs: fm_volume=0.0559117086
D/audio_hw_extn(  347): audio_extn_set_anc_parameters: anc_enabled:0
D/audio_hw_fm(  347): audio_extn_fm_set_parameters: set_fm_volume usecaseD/audio_hw_fm(  347): fm_set_volume: (0.055912)
V/EffectDiracSound(  347): DiracSound_command() start, cmdCode=24
V/EffectDiracSound(  347): DiracSo
und_Command EFFECT_CMD_SET_STREAM_VOLUME: stream=3, valume=0xe503a
V/EffectDiracSound(  347): stream volume = 0.055912I/EffectDiracSound(  347): DiracSound_updateStreamVolume(), stream=3,

volume=0.055912
V/EffectDiracSound(  347): DiracSound_command() start, cmdCode=24
V/EffectDiracSound(  347): DiracSound_Command EFFECT_CMD_SET_STREAM_VOLUME: stream=10, valume=0xe503a
V/EffectDiracSound(  347): stream volume = 0.055912
I/ServiceManager( 7704): Waiting for service goodix.fp...

In the 6.7.7 code snippet the information that the button is released is missing
Code: 
D/BaseMiuiPhoneWindowManager( 2298): keyCode:25 down:true 195180 195180 isScreenOn:true
D/audio_hw_primary(  341): out_set_parameters: enter: usecase(0: deep-buffer-playback) kvpairs: fm_volume=0.0559117086
D/audio_hw_extn(  341): audio_extn_set_anc_parameters: anc_enabled:0
D/audio_hw_fm(  341): audio_extn_fm_set_parameters: set_fm_volume usecase
D/audio_hw_fm(  341): fm_set_volume: (0.055912)
V/EffectDiracSound(  341): DiracSound_command() start, cmdCode=24
V/EffectDiracSound(  341): DiracSound_Command EFFECT_CMD_SET_STREAM_VOLUME: stream=3, valume=0xe503a
V/EffectDiracSound(  341): stream volume = 0.055912
I/EffectDiracSound(  341): DiracSound_updateStreamVolume(), stream=3, volume=0.055912
V/EffectDiracSound(  341): DiracSound_command() start, cmdCode=24
V/EffectDiracSound(  341): DiracSound_Command EFFECT_CMD_SET_STREAM_VOLUME: stream=10, valume=0xe503a
V/EffectDiracSound(  341): stream volume = 0.055912
D/audio_hw_extn(  341): audio_extn_get_parameters: returns
I/str_params(  341): key: 'hifi_mode' value: ''
I/ViewRootImpl( 3379): CPU Rendering VSync enable = true
I/PhoneStatusBar( 3379): remove music last volume when volume is changed by others
D/audio_hw_primary(  341): out_set_parameters: enter: usecase(0: deep-buffer-playback) kvpairs: fm_volume=0.0375840105
D/audio_hw_extn(  341): audio_extn_set_anc_parameters: anc_enabled:0
D/audio_hw_fm(  341): audio_extn_fm_set_parameters: set_fm_volume usecase
D/audio_hw_fm(  341): fm_set_volume: (0.037584)
V/EffectDiracSound(  341): DiracSound_command() start, cmdCode=24
V/EffectDiracSound(  341): DiracSound_Command EFFECT_CMD_SET_STREAM_VOLUME: stream=3, valume=0x99f1b
V/EffectDiracSound(  341): stream volume = 0.037584
I/EffectDiracSound(  341): DiracSound_updateStreamVolume(), stream=3, volume=0.037584
V/EffectDiracSound(  341): DiracSound_command() start, cmdCode=24
V/EffectDiracSound(  341): DiracSound_Command EFFECT_CMD_SET_STREAM_VOLUME: stream=10, valume=0x99f1b
V/EffectDiracSound(  341): stream volume = 0.037584
D/audio_hw_extn(  341): audio_extn_get_parameters: returns
I/str_params(  341): key: 'hifi_mode' value: ''
I/PhoneStatusBar( 3379): remove music last volume when volume is changed by others
D/audio_hw_primary(  341): out_set_parameters: enter: usecase(0: deep-buffer-playback) kvpairs: fm_volume=0.0236457717
D/audio_hw_extn(  341): audio_extn_set_anc_parameters: anc_enabled:0
D/audio_hw_fm(  341): audio_extn_fm_set_parameters: set_fm_volume usecase
D/audio_hw_fm(  341): fm_set_volume: (0.023646)
V/EffectDiracSound(  341): DiracSound_command() start, cmdCode=24
V/EffectDiracSound(  341): DiracSound_Command EFFECT_CMD_SET_STREAM_VOLUME: stream=3, valume=0x60da6
V/EffectDiracSound(  341): stream volume = 0.023646
I/EffectDiracSound(  341): DiracSound_updateStreamVolume(), stream=3, volume=0.023646
V/EffectDiracSound(  341): DiracSound_command() start, cmdCode=24
V/EffectDiracSound(  341): DiracSound_Command EFFECT_CMD_SET_STREAM_VOLUME: stream=10, valume=0x60da6
V/EffectDiracSound(  341): stream volume = 0.023646
D/audio_hw_extn(  341): audio_extn_get_parameters: returns
I/str_params(  341): key: 'hifi_mode' value: ''
I/PhoneStatusBar( 3379): remove music last volume when volume is changed by others
D/audio_hw_primary(  341): out_set_parameters: enter: usecase(0: deep-buffer-playback) kvpairs: fm_volume=0.0148766134
D/audio_hw_extn(  341): audio_extn_set_anc_parameters: anc_enabled:0
D/audio_hw_fm(  341): audio_extn_fm_set_parameters: set_fm_volume usecase
D/audio_hw_fm(  341): fm_set_volume: (0.014877)
V/EffectDiracSound(  341): DiracSound_command() start, cmdCode=24
V/EffectDiracSound(  341): DiracSound_Command EFFECT_CMD_SET_STREAM_VOLUME: stream=3, valume=0x3cef4
V/EffectDiracSound(  341): stream volume = 0.014877
I/EffectDiracSound(  341): DiracSound_updateStreamVolume(), stream=3, volume=0.014877
V/EffectDiracSound(  341): DiracSound_command() start, cmdCode=24
V/EffectDiracSound(  341): DiracSound_Command EFFECT_CMD_SET_STREAM_VOLUME: stream=10, valume=0x3cef4
V/EffectDiracSound(  341): stream volume = 0.014877
D/audio_hw_extn(  341): audio_extn_get_parameters: returns
I/str_params(  341): key: 'hifi_mode' value: ''
I/PhoneStatusBar( 3379): remove music last volume when volume is changed by others
D/audio_hw_primary(  341): out_set_parameters: enter: usecase(0: deep-buffer-playback) kvpairs: fm_volume=0.0100000994
D/audio_hw_extn(  341): audio_extn_set_anc_parameters: anc_enabled:0
D/audio_hw_fm(  341): audio_extn_fm_set_parameters: set_fm_volume usecase
D/audio_hw_fm(  341): fm_set_volume: (0.010000)
V/EffectDiracSound(  341): DiracSound_command() start, cmdCode=24
V/EffectDiracSound(  341): DiracSound_Command EFFECT_CMD_SET_STREAM_VOLUME: stream=3, valume=0x28f5d
V/EffectDiracSound(  341): stream volume = 0.010000
I/EffectDiracSound(  341): DiracSound_updateStreamVolume(), stream=3, volume=0.01000
0V/EffectDiracSound(  341): DiracSound_command() start, cmdCode=24
V/EffectDiracSound(  341): DiracSound_Command EFFECT_CMD_SET_STREAM_VOLUME: stream=10, valume=0x28f5d
V/EffectDiracSound(  341): stream volume = 0.010000
D/audio_hw_extn(  341): audio_extn_get_parameters: returns
I/str_params(  341): key: 'hifi_mode' value: ''
I/PhoneStatusBar( 3379): remove music last volume when volume is changed by others
D/audio_hw_primary(  341): out_set_parameters: enter: usecase(0: deep-buffer-playback) kvpairs: fm_volume=0.0046604346
D/audio_hw_extn(  341): audio_extn_set_anc_parameters: anc_enabled:0
D/audio_hw_fm(  341): audio_extn_fm_set_parameters: set_fm_volume usecase
D/audio_hw_fm(  341): fm_set_volume: (0.004660)
V/EffectDiracSound(  341): DiracSound_command() start, cmdCode=24
V/EffectDiracSound(  341): DiracSound_Command EFFECT_CMD_SET_STREAM_VOLUME: stream=3, valume=0x1316d
V/EffectDiracSound(  341): stream volume = 0.004660
I/EffectDiracSound(  341): DiracSound_updateStreamVolume(), stream=3, volume=0.004660
V/EffectDiracSound(  341): DiracSound_command() start, cmdCode=24
V/EffectDiracSound(  341): DiracSound_Command EFFECT_CMD_SET_STREAM_VOLUME: stream=10, valume=0x1316d
V/EffectDiracSound(  341): stream volume = 0.004660
D/audio_hw_extn(  341): audio_extn_get_parameters: returns
I/str_params(  341): key: 'hifi_mode' value: ''
I/PhoneStatusBar( 3379): remove music last volume when volume is changed by others
D/audio_hw_primary(  341): out_set_parameters: enter: usecase(0: deep-buffer-playback) kvpairs: fm_volume=0.0021719411
D/audio_hw_extn(  341): audio_extn_set_anc_parameters: anc_enabled:0
D/audio_hw_fm(  341): audio_extn_fm_set_parameters: set_fm_volume usecase
D/audio_hw_fm(  341): fm_set_volume: (0.002172)
V/EffectDiracSound(  341): DiracSound_command() start, cmdCode=24
V/EffectDiracSound(  341): DiracSound_Command EFFECT_CMD_SET_STREAM_VOLUME: stream=3, valume=0x8e57
V/EffectDiracSound(  341): stream volume = 0.002172
I/EffectDiracSound(  341): DiracSound_updateStreamVolume(), stream=3, volume=0.002172
V/EffectDiracSound(  341): DiracSound_command() start, cmdCode=24
V/EffectDiracSound(  341): DiracSound_Command EFFECT_CMD_SET_STREAM_VOLUME: stream=10, valume=0x8e57
V/EffectDiracSound(  341): stream volume = 0.002172
D/audio_hw_extn(  341): audio_extn_get_parameters: returns
I/str_params(  341): key: 'hifi_mode' value: ''
I/PhoneStatusBar( 3379): remove music last volume when volume is changed by others
D/audio_hw_primary(  341): out_set_parameters: enter: usecase(0: deep-buffer-playback) kvpairs: fm_volume=0.0000000000
D/audio_hw_extn(  341): audio_extn_set_anc_parameters: anc_enabled:0
D/audio_hw_fm(  341): audio_extn_fm_set_parameters: set_fm_volume usecase
D/audio_hw_fm(  341): fm_set_volume: (0.000000)
V/EffectDiracSound(  341): DiracSound_command() start, cmdCode=24
V/EffectDiracSound(  341): DiracSound_Command EFFECT_CMD_SET_STREAM_VOLUME: stream=3, valume=0x0
V/EffectDiracSound(  341): stream volume = 0.000000
I/EffectDiracSound(  341): DiracSound_updateStreamVolume(), stream=3, volume=0.000000
V/EffectDiracSound(  341): DiracSound_command() start, cmdCode=24
V/EffectDiracSound(  341): DiracSound_Command EFFECT_CMD_SET_STREAM_VOLUME: stream=10, valume=0x0
V/EffectDiracSound(  341): stream volume = 0.000000

Here you can see that
Code: 
D/BaseMiuiPhoneWindowManager( xxx): keyCode:25 down:false
is missing, so that the volume is reduced from 0.055912 to 0.000000.

Apparently in 6.7.7 new DRM stuff has been implemented, too (deleted in the code snippets).

EDIT: 6.9.29 contains the same bug and "D/BaseMiuiPhoneWindowManager( xxx): keyCode:25 down:false" is missing, too.
 
Last edited:
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Maybe I'm reading the linked Xiaomi bug report wrong, but according to "edit 5" it seems the issue was fixed in 6.8.4:

Edit 5: after go on global beta & china developer, i can say that the remote button are works again, i found that while still on china dev 6.7.28 & Global beta 6.7.29 & now after last update 6.8.4 Both Global beta & china Dev Rom remote button still works & wirks on headset mode ( both pick & answer the phonecall.​

Does this mean it returned in later releases? Or is the release mentioned in the bug report not related to the weekly releases here?
 
lennois said:
Same problem here. redmi 3 pro, 6.9.22, mi in ear headphones (hybrid). It has been reported here - http://en.miui.com/thread-307101-1-1.html. Please add confirmation to that thread. That was in July though so obviously xiaomi don't really care. Joke company
Click to expand...
Done. I haven't found this thread on Miui, so I created another one. This problem has been addressed often (e.g. http://en.miui.com/forum.php?mod=viewthread&tid=354900&extra=page=4&mobile=2). Someone in this thread said the problem has been fixed, while others deny it. Xiaomi won't fix bugs, IMHO the Redmi 3 won't get Android 6... Redmi is more and more turning to Crapmi.

(b_a) said:
Maybe I'm reading the linked Xiaomi bug report wrong, but according to "edit 5" it seems the issue was fixed in 6.8.4:

Edit 5: after go on global beta & china developer, i can say that the remote button are works again, i found that while still on china dev 6.7.28 & Global beta 6.7.29 & now after last update 6.8.4 Both Global beta & china Dev Rom remote button still works & wirks on headset mode ( both pick & answer the phonecall.​

Does this mean it returned in later releases? Or is the release mentioned in the bug report not related to the weekly releases here?
Click to expand...
All I can say is that the error is both in 6.7.7 and 6.9.29. I cannot say whether the error is still there or there again. After my hols I'll install the abovementioned versions (but xiaomi EU) and check whether the bug is fixed. Or I just buy an iPhone again..
 
I've installed the following firmwares:
  • latest global stable (V8.0.2.0.)
  • global developer 6.7.29
  • global developer 6.8.4
All of these contain the Xiaomi headphones error.

So I'll install 6.6.30 again. I can't be bothered to help Xiaomi fixing their screwed up firmware anymore.
 
Just out of curiosity: Can this bug be fixed by Xiaomi EU or only by those MIUI developers?
 
While I know it's not up to the Xiaomi EU to fix, just FYI: the bug is still there in 7.1.12
 
Someone on the MIUI forums has found a workaround:

They flashed the boot partition and replaced the modules directory (/system/lib/modules/*) with the files from an older ROM where the buttons still worked.

The Redmi 2 also has older ROM's that have working buttons, however I am not sure how I can extract only the boot image and the modules directory of those ROM's. Perhaps someone here is more familiar with that?
 
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