Would it be possible for you to test the latest upstream stable kernel?
Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the
latest v4.4 stable kernel.
If this bug is fixed in the mainline kernel, please add the following
If the mainline kernel does not fix this bug, please add the tag:
If you are unable to test the mainline kernel, for example it will not boot,
please add the tag: 'kernel-unable-to-test-upstream'.
Once testing of the upstream kernel is complete, please mark this bug as
Thanks in advance.
** Changed in: linux (Ubuntu)
Importance: Undecided => Medium
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trackpad on MacBook not working with 4.4.0-22 update
Status in linux package in Ubuntu:
After updating the kernel to 4.4.0-22 the trackpad on my MacBook Air no
It looks like the usbmouse driver loads first and associates with the
touchpad, and this prevents the bcm5974 module from acquiring the hardware.
I was able to resolve the problem by manually unloading the usbmouse module,
then reloading bcm5974:
modprobe -r usbmouse
modprobe -r bcm5974
This is on 16.04 LTS, fully updated.
DistroRelease: Ubuntu 16.04
Package: linux-base 4.0ubuntu1
ProcVersionSignature: Ubuntu 4.4.0-22.40-generic 4.4.8
Uname: Linux 4.4.0-22-generic x86_64
Date: Sat May 28 08:19:30 2016
InstallationDate: Installed on 2016-05-09 (18 days ago)
InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64
UpgradeStatus: No upgrade log present (probably fresh install)
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