Fresh install sutton-newton2-xenial-amd64-20170424-0.iso and the latest checkbox version on Newton2-4. All touchpad relevant test cases can be executed. The issue has gone. @Sylvain, Thank you.
Fresh install sutton- newton2- xenial- amd64-20170424- 0.iso and the latest checkbox version on Newton2-4. All touchpad relevant test cases can be executed. The issue has gone. @Sylvain, Thank you.