1149921 - [Flame][Bluetooth]Sometimes "Unable to pair devices" pops up when you first tap a device to pair.

Status: RESOLVED DUPLICATE of bug 1122177

(Firefox OS Graveyard :: Bluetooth, defect)

Description

[Shally Li（leave from Mozilla）]

[1.Description]:
[Flame][v2.2&3.0][Bluetooth]Sometimes "Unable to pair devices" pops up when you turn on Bluetooth and tap on a device to pair for the first time.
Found time:06:40
Attach:unpair.mp4 and logcat_0640.txt.

[2.Testing Steps]: 
1.Go to Settings.
2.Turn on Bluetooth for the first time and turn on "Vidible to all" ,or rename my device.
3.Tap on a device in "Devices in the area" for the first time.
4.Tap Ok on the prompt "Unable to pair devices" and tap the other device,then device can pair successfully. 

[3.Expected Result]: 
3.The prompt "Unable to pair devices"  should not pop up and can pair successfully when first time tapping on the other device.

[4.Actual Result]: 
3.The prompt "Unable to pair devices" pops up.

[5.Reproduction build]: 
Device: Flame 2.2 build(Affected)
Build ID               20150331162505
Gaia Revision          8b3086ad3963f1707e2bee9094baccafffe161c4
Gaia Date              2015-03-31 21:48:06
Gecko Revision         https://hg.mozilla.org/releases/mozilla-b2g37_v2_2/rev/88e0e00cd64e
Gecko Version          37.0
Device Name            flame
Firmware(Release)      4.4.2
Firmware(Incremental)  eng.cltbld.20150331.200333
Firmware Date          Tue Mar 31 20:03:44 EDT 2015
Bootloader             L1TC000118D0

Device: Flame 3.0 build(Affected)
Build ID               20150331160205
Gaia Revision          03164bd160809747e6a198e0dba1b7c3ee7789f5
Gaia Date              2015-03-31 14:48:14
Gecko Revision         https://hg.mozilla.org/mozilla-central/rev/18a8ea7c2c62
Gecko Version          40.0a1
Device Name            flame
Firmware(Release)      4.4.2
Firmware(Incremental)  eng.cltbld.20150331.191641
Firmware Date          Tue Mar 31 19:16:50 EDT 2015
Bootloader             L1TC000118D0

[6.Reproduction Frequency]: 
occasionally Recurrence,5/10

[7.TCID]: 
Free Test

Comment 1

[Shally Li（leave from Mozilla）]

Attachment: logcat_0640.txt

Comment 2

[William Hsu [:whsu]]

Basic functionality becomes unstable. Suggest to fix on v2.2 branch.

Comment 3

[bhavana bajaj [:bajaj]]

Can you confirm you get this error with different bluetooth devices or is it a one-off case with only a certain device? NI shawn to see if he has other questions ideas here before I block.

Comment 4

[Shally Li（leave from Mozilla）]

(In reply to bhavana bajaj [:bajaj] from comment #3)
> Can you confirm you get this error with different bluetooth devices or is it
> a one-off case with only a certain device? NI shawn to see if he has other
> questions ideas here before I block.

Hi Bhavana,

    I can repro this bug with different bluetooth devices,not the certain device to pair or to be paired.
    When I enable the bluetooth daemon([ro.moz.bluetooth.backend]: [bluetoothd] & [init.svc.bluetoothd]: [running]), this bug also exists. 

Hope useful for you,thanks.

Comment 5

[William Hsu [:whsu]]

Hi, Shally,

I would like to double check this defect on another branch.
Can it be reproduced on the latest v2.1 build?
Many thanks.

Comment 6

[Shally Li（leave from Mozilla）]

Hi William,

    I can't repro this bug on latest Flame v2.0&2.1 build(Rate:0/5). 
    When tapping on a device to pair under "Device in the area", the message "Bluetooth Request From" will pop up as expected.

--------------------------------------------------------------------------------
Device: Flame 2.0 build(Unaffected)
Gaia-Rev        84898cadf28b1a1fcd03b726cff658de470282f0
Gecko-Rev       https://hg.mozilla.org/releases/mozilla-b2g32_v2_0/rev/e4014ac859af
Build-ID        20150406160207
Version         32.0
Device-Name     flame
FW-Release      4.4.2
FW-Incremental  eng.cltbld.20150406.194235
FW-Date         Mon Apr  6 19:42:44 EDT 2015
Bootloader      L1TC000118D0

Device: Flame 2.1 build(Unaffected)
Build ID               20150406001204
Gaia Revision          87e55a7ec688138812181747f690fd188d2a0668
Gaia Date              2015-04-03 21:43:01
Gecko Revision         https://hg.mozilla.org/releases/mozilla-b2g34_v2_1/rev/747b6132c44d
Gecko Version          34.0
Device Name            flame
Firmware(Release)      4.4.2
Firmware(Incremental)  eng.cltbld.20150406.034925
Firmware Date          Mon Apr  6 03:49:36 EDT 2015
Bootloader             L1TC000118D0

Comment 7

[William Hsu [:whsu]]

Thanks Shally.

A regression bug.

Comment 9

[Shawn Huang [:shawnjohnjr][:shuang] (as a happy gecko contributor)]

(In reply to bhavana bajaj [:bajaj] from comment #3)
> Can you confirm you get this error with different bluetooth devices or is it
> a one-off case with only a certain device? NI shawn to see if he has other
> questions ideas here before I block.

This bug looks like  bug 1122177. Since this is related to bluedroid bug. This probably needs to fix at bluedroid side and it cannot reproduce on v2.2 reference devices. I've tried to contribute back to AOSP, but this bug will be reported several times if the fix won't be merged into bluedroid CAF branch caf/b2g_kk_3.5.

Comment 10

[bhavana bajaj [:bajaj]]

Any hack we can add on our side to avoid this?