We found under some extreme system usage that comment #2 can fix the problem.
Run some application/operation (e.g: Play youtube on background, launch libreoffice for awhile (about 5-10min) or insert USB to copy some files : The touchpad cursor were no function after some operation, sometime it scrolling automatically or keep send press signal. Without the patch of comment #2, when the issue occurred we also check the touchpad event on ttyl1 by "evtest", we can found the event keeping output without move cursor/click touchpad. Our observation is the HiDPI platform may have more loading cause this issue and sometimes its also cause xorg crash. ** Attachment added: "Screenshot from 2015-05-27 17_24_59.png" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1456881/+attachment/4406011/+files/Screenshot%20from%202015-05-27%2017_24_59.png -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1456881 Title: Some touchpads' right button doesn't work under I2C mode, need support of clickpads To manage notifications about this bug go to: https://bugs.launchpad.net/hwe-next/+bug/1456881/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
