The problem still seems to be there even with the latest 3.12 kernel.
I am using a Scientific Linux 6 system, which originally uses a 2.6.32 kernel 
that does not provide the ath3k.ko module "out-of-the-box".
My experience is the following: When I power-on my system with the latest 3.12 
kernel, the firmware of my Atheros AR3011 Bluetooth adapter (stored in the file 
/lib/firmware/ath3k-1.fw) obviously gets loaded properly with the kernel module 
ath3k.ko, since the "lsusb" command issued after system boot lists this adapter 
without any "complaints" about any missing firwware, which - in contrast to 
this - is the case when I boot kernel 2.6.32 directly after powering on my 
system.
However, even though the firmware seems to be loaded with kernel 3.12, the 
system is not able to use this bluetooth adapter. If I then just perform a 
system restart without any power interrupt in between (which obviously keeps 
the firmware inside of the adapter's RAM) and boot kernel 2.6.32 (which does 
not have the ath3k.ko, but "only" the btusb.ko module), my Atheros bluetooth 
adapter can be used by the system and I can successfully communicate with my 
various cell phones via the bluetooth interface....

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https://bugs.launchpad.net/bugs/1054307

Title:
  ATH3012 bluetooth not working

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