Public bug reported: Driver update in Kernel 4.2 causes severe usability issues with Cypress touchpad (cyapa) used on Acer C7x0 chromebooks.
The driver in question is ignoring events during entering/leaving idle status which from user standpoint seems like touchpad is not reacting to actions performed after touchpad is not used for more then 2 seconds. The bug was partially fixed in 4.3 and additional fix was pushed to upcoming 4.5. After direct communication with driver maintainer, we came up with 2 patches fixing the problem. Since 4.2 is EOL now, the patches cannot be pushed into upstream therefor are posted here. First patch is a backport of driver from 4.3 to 4.2 and the second patch is additional fix that should be applied on 4.3/4.4. Tested: - 4.2.0-23-generic #28~14.04.1-Ubuntu on Acer C710 - 4.4 mainline on Acer C720p ** Affects: linux (Ubuntu) Importance: Undecided Status: New ** Patch added: "input-cyapa-fix.tar.xz" https://bugs.launchpad.net/bugs/1534661/+attachment/4550561/+files/input-cyapa-fix.tar.xz -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1534661 Title: regression: Cypress touchpad driver (cyapa) ignores events after bieng idle for 2 seconds Status in linux package in Ubuntu: New Bug description: Driver update in Kernel 4.2 causes severe usability issues with Cypress touchpad (cyapa) used on Acer C7x0 chromebooks. The driver in question is ignoring events during entering/leaving idle status which from user standpoint seems like touchpad is not reacting to actions performed after touchpad is not used for more then 2 seconds. The bug was partially fixed in 4.3 and additional fix was pushed to upcoming 4.5. After direct communication with driver maintainer, we came up with 2 patches fixing the problem. Since 4.2 is EOL now, the patches cannot be pushed into upstream therefor are posted here. First patch is a backport of driver from 4.3 to 4.2 and the second patch is additional fix that should be applied on 4.3/4.4. Tested: - 4.2.0-23-generic #28~14.04.1-Ubuntu on Acer C710 - 4.4 mainline on Acer C720p To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1534661/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp