Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v4.2 kernel[0].
If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'. If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'. Once testing of the upstream kernel is complete, please mark this bug as "Confirmed". Thanks in advance. [0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.2-rc8-unstable/ ** Changed in: linux (Ubuntu) Importance: Undecided => Medium ** Tags added: kernel-da-key regression-update vivid -- 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/1487334 Title: Touchpad tap-event support broken since kernel 3.19.0-25 Status in linux package in Ubuntu: Incomplete Bug description: Release: Ubuntu 15.04 Hardware: Logitech TK820 wireless keyboard with touchpad I've been using the said hardware with ubuntu in all releases since 13.10 without problems. All touchpad features were working fine until I received in 15.04 the automatic update to kernel version 3.19.0-22. This kernel introduced a condition in which, at times, the system started randomly registering keyboard input when pointing with the touchpad. The original bug got apparently fixed in kernel version 3.19.0-25, but as a result this kernel version broke completely all tap-events for my touchpad. They are not registering at all. Pointing and scrolling work, so do the mechanical click-switches in the corners, but tapping or sweeping with one or more fingers does not get registered even though the settings were never touched. I now got kernel update to 3.19.0-26, but the bug persists in this version, too. At the moment I had to revert back to kernel version 3.19.0-16 in order to be able to use my touchpad normally. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1487334/+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
