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[Q] Bluetooth won't enable after OTA 4.2 update

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retro83's Avatar
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Default [Q] Bluetooth won't enable after OTA 4.2 update

Just done 4.2 update after I was offered it.
However my Bluetooth now will not enable. The notification bar Bluetooth icon highlights but goes back to grey, the on/off slider in settings immediately goes back to off and the power widget BT icon does nothing.

Any ideas? Searched the board but all i could find were people with stuttering issues, not complete failure to activate bluetooth.

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Might be a stupid question, but have you tried rebooting the phone?

My phone ocassionally locks itself in "shutting off bluetooth" mode, but a reboot has always fixed it.
(Last edited by retro83; 20th November 2012 at 11:04 PM.)
retro83's Avatar
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How embarrassing. Looks like a fair amount of people have the same issue:

Edit: yes, forgot to say, have rebooted and powered off/removed battery - still no change.
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Some solution?

Sent from my Galaxy Nexus using xda app-developers app
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From what I've read the solution is to flash the factory image instead, or possibly just factory reset the phone.

But be aware that even with a cleanly flashed phone, BT has major issues in 4.2. Stuttering audio, disconnects, etc. Not everyone seems to be affected by this for whatever reason, but the new BT stack is definitely no hit.
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Yeah, having the same exact issues. I'll wait for 4.2.1 before I flash any images.
retro83's Avatar
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Don't bother, still broken in 4.2.1

Bug number again: 39688. Please star it if you have the issue.
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i know this thread hasnt been updated in a while but for anyone finding this thread through various searches, the fix to try if you are rooted is linked below. It appeared to be a simple permissions issue

Device History

Palm Treo 680 unlocked (long gone)|HTC TouchPro 2 (screen cracked) | Samsung Vibrant (fiancee's phone) Stock Froyo KA6 rooted + KB1 modem | Samsung Nexus S Stock JRO03E-rooted w/ClockWorkMod Touch (sold!) | Samsung Galaxy Nexus Stock JDQ39 rooted (Alt Phone with ATT sim)|Samsung Galaxy S4 (Verizon) Stock VRUAMDK+ Root and TWRP recovery
Samsung Galaxy Tab 7.0 Plus 32 gig Stock Ice Cream Sandwich 4.0.4 rooted (used as the center piece of my in car entertainment)

4.2, bluetooth
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