How to backport kernel to make bluetooth work

walidham

Many users want to know how backport kernel to make bluetooth work , in this guide i will try to show you the steps to do it:

1- First clone linux-next (don't download zip or tar file you must clone)

git clone https://kernel.googlesource.com/pub/scm/linux/kernel/git/next/linux-next -b v4.2-rc7 linux-kernel

2- Clone your kernel

3- Clone backport patch

https://github.com/ubuntu-phonedations/backports.git -b for-ubuntu backport-ubuntu

4- Under backport-ubuntu folder, run this command (you must put absolute path for kernel)

./gentree.py --copy-list ./copy-list --integrate --clean --git-revision v4.6 [path-to-kernel-next]/kernel-next [path-to-your-kernel]/your_kernel

If you try to compile kernel maybe you will get some error, to avoid it try first to apply this patch :

First check if patch is ok
git apply --check hid-generic.patch

Second if there is not any error apply it

git am --signoff < hid-generic.patch

Finaly replace backport folder (in your kernel )with this

backports.tar.xz

Link to download hid-generic.patch
hid-generic.patch

Also its important : remove all CONFIG_BT* in kernel config
BR

Bastos

Sounds great. But for me as a user seems too complicated.
Us this really solving all our Bluetooth problems? Maybe than this should be implemented in ota3?
But again. I am not at all a developer ...

flohack

@bastos No sorry, this will not help Bluetooth problems on the user/app end. This is driver updates for making a Bluetooth device visible at all. So all our kernels already have to have this patch inside

I was hoping to get more issues resolved with xenial but it seems that Bluetooth in 15.04 is already a backport of 16.04 - So we will see but unfortunately it can be that we will carry on those connection problems and crashes

BR Florian

Verevka

@walidham Will this help with the msm4.4 kernel? Halium7.1