Arch Linux

jazmit

Member

Registered: 2015-10-09

Posts: 1

'Unable to create CMAC crypto context' when connecting bluetooth audio

On using bluetoothctl to connect to my bluetooth speakers, I get the error

    Failed to connect: org.bluez.Error.Failed

journalctl reveals a slightly more helpful error message:

    kernel: Bluetooth: Unable to create CMAC crypto context

Searching traces the error back to the kernel source here (line 1395):

    http://lxr.free-electrons.com/source/ne … ooth/smp.c

I'm using the latest arch stock kernel on the dell xps 13 (2015)

    $ uname -a
    Linux jazmit-xps 4.1.6-1-ARCH #1 SMP PREEMPT Mon Aug 17 08:52:28 CEST 2015 x86_64 GNU/Linux

I noticed other users of this forum appear to have a cmac module loaded in their debugging messages, but lsmod shows up no such module for me, and searching didn't reveal any packages which supply it..  Any ideas for next steps debugging this?

Last edited by jazmit (2015-10-09 16:37:52)

byte

Member

From: Düsseldorf (DE)

Registered: 2006-05-01

Posts: 2,046

Re: 'Unable to create CMAC crypto context' when connecting bluetooth audio

> but lsmod shows up no such module for me, and searching didn't reveal any packages which supply it

It's built with the default (linux, linux-lts) kernel packages, just run 'modprobe -v cmac'.

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