Acer keyboards e.g. in Acer SW5-012 use synaptics touchpad USB ID (06cb:2968, 06CB:2991 & 06CB:74D9) and have the following issue:
- The report descriptor specifies an excessively large number of usages and logical max (2^16), which is more than HID_MAX_USAGES. This prevents proper parsing of the report descriptor.
see http:https://www.spinics.net/lists/linux-input/msg40080.html
Applied to for-4.3/upstream
06CB:2968
- Acer SW5-012
06CB:2991
- Acer SW5-171
06CB:74d9
- Acer SW5-171 Firmware revision 2.1
- Install linux-headers (for current version) and build utils.
(see e.g. http:https://www.cyberciti.biz/tips/build-linux-kernel-module-against-installed-kernel-source-tree.html)
git clone https://github.com/SWW13/hid-acer.git
cd hid-acer
make
sudo make install
sudo make uninstall