Sometimes touchpad doesn't work properly after palm is rejected. The pointer either jumping around (described on bugzilla[1]) or doesn't move at all (in our cases).
This problem is introduced with commit: 25a84db15b3f3a24d3ea7d2baf90693bcff34b0c (HID: multitouch: enable palm rejection if device implements confidence usage), by reverting it the touchpad can work properly.
We also contacted with Synaptics, and they provided a workaround to fix this issue. Not sure if the workaround will be upstreamed and needs to keep co-working with them.
Commit 25a84db applies to Xenial and Yakkety so only these two release were affected.
Sometimes touchpad doesn't work properly after palm is rejected. The pointer either jumping around (described on bugzilla[1]) or doesn't move at all (in our cases).
This problem is introduced with commit: 25a84db15b3f3a2 4d3ea7d2baf9069 3bcff34b0c (HID: multitouch: enable palm rejection if device implements confidence usage), by reverting it the touchpad can work properly.
We also contacted with Synaptics, and they provided a workaround to fix this issue. Not sure if the workaround will be upstreamed and needs to keep co-working with them.
Commit 25a84db applies to Xenial and Yakkety so only these two release were affected.
[1]: https:/ /bugzilla. kernel. org/show_ bug.cgi? id=112791