Public bug reported: The Broadwell XPS 13 (with touchpad in the more feature rich I2S mode that's used in OEM Ubuntu images and the default on newer kernels) and other systems utilize a touchpad conforming to the Microsoft Precision Touchpad specification. However, palm rejection on Linux did not work on relevant systems because support for the confidence bit was not supported for touchpads following this standard. As a result, palm rejection does not work on MSPT touchpads, resulting in degraded functionality for users.
Allen Hung at Dell developed a patch that allows the Linux kernel to utilize the confidence bit for touchpads reporting themselves as Microsoft Precision Touchpads. It has been accepted for include in the 4.5 kernel. It looks like the patch has been accepted in the linux- stable tree (though I do not know what the timeline is for actual inclusion in stable Linux kernel versions): https://git.kernel.org/cgit/linux/kernel/git/stable/linux- stable.git/commit/?id=25a84db15b3f3a24d3ea7d2baf90693bcff34b0c This request is to include this patch in supported versions of Ubuntu. I believe it is safe to include this patch as an SRU, which can be dropped once the patch makes its way into the stable kernel upstream updates. ** Affects: linux (Ubuntu) Importance: Undecided Status: Incomplete ** Patch added: "25a84db1.patch" https://bugs.launchpad.net/bugs/1541671/+attachment/4563401/+files/25a84db1.patch -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1541671 Title: backport Microsoft Precision Touchpad palm rejection patch To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1541671/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
