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[Bug 1541671] Re: backport Microsoft Precision Touchpad palm rejection patch

 

This bug was fixed in the package linux - 4.4.0-4.19

---------------
linux (4.4.0-4.19) xenial; urgency=low

  * update ZFS and SPL to 0.6.5.4 (LP: #1542296)
    - [Config] update spl/zfs version
    - SAUCE: (noup) Update spl to 0.6.5.4-0ubuntu2, zfs to 0.6.5.4-0ubuntu1
    - [Config] reconstruct -- drop links for zfs userspace components
    - [Config] reconstruct -- drop links for zfs userspace components -- restore spec links

  * recvmsg() fails SCM_CREDENTIALS request with EOPNOTSUPP. (LP: #1540731)
    - Revert "af_unix: Revert 'lock_interruptible' in stream receive code"

  * lxc: ADT exercise test failing with linux-4.4.0-3.17  (LP: #1542049)
    - Revert "UBUNTU: SAUCE: apparmor: fix sleep from invalid context"

  * WARNING: at /build/linux-lts-wily-W0lTWH/linux-lts-wily-4.2.0/net/core/skbuff.c:4174 (Travis IB) (LP: #1541326)
    - SAUCE: IB/IPoIB: Do not set skb truesize since using one linearskb

  * backport Microsoft Precision Touchpad palm rejection patch (LP: #1541671)
    - HID: multitouch: enable palm rejection if device implements confidence usage

  * [Ubuntu 16.04] Update qla2xxx driver for POWER (QLogic) (LP: #1541456)
    - qla2xxx: Remove unavailable firmware files
    - qla2xxx: Enable Extended Logins support
    - qla2xxx: Enable Exchange offload support.
    - qla2xxx: Enable Target counters in DebugFS.
    - qla2xxx: Add FW resource count in DebugFS.
    - qla2xxx: Added interface to send explicit LOGO.
    - qla2xxx: Delete session if initiator is gone from FW
    - qla2xxx: Wait for all conflicts before ack'ing PLOGI
    - qla2xxx: Replace QLA_TGT_STATE_ABORTED with a bit.
    - qla2xxx: Remove dependency on hardware_lock to reduce lock contention.
    - qla2xxx: Add irq affinity notification
    - qla2xxx: Add selective command queuing
    - qla2xxx: Move atioq to a different lock to reduce lock contention
    - qla2xxx: Disable ZIO at start time.
    - qla2xxx: Set all queues to 4k
    - qla2xxx: Check for online flag instead of active reset when transmitting responses
    - scsi: qla2xxxx: avoid type mismatch in comparison

  * [Hyper-V] PCI Passthrough (LP: #1541120)
    - x86/irq: Export functions to allow MSI domains in modules
    - genirq/msi: Export functions to allow MSI domains in modules

  * Update lpfc driver to 11.0.0.10 (LP: #1541592)
    - lpfc: Fix FCF Infinite loop in lpfc_sli4_fcf_rr_next_index_get.
    - lpfc: Fix the FLOGI discovery logic to comply with T11 standards
    - lpfc: Fix RegLogin failed error seen on Lancer FC during port bounce
    - lpfc: Fix driver crash when module parameter lpfc_fcp_io_channel set to 16
    - lpfc: Fix crash in fcp command completion path.
    - lpfc: Modularize and cleanup FDMI code in driver
    - lpfc: Fix RDP Speed reporting.
    - lpfc: Fix RDP ACC being too long.
    - lpfc: Make write check error processing more resilient
    - lpfc: Use new FDMI speed definitions for 10G, 25G and 40G FCoE.
    - lpfc: Fix mbox reuse in PLOGI completion
    - lpfc: Fix external loopback failure.
    - lpfc: Add logging for misconfigured optics.
    - lpfc: Delete unnecessary checks before the function call "mempool_destroy"
    - lpfc: Use kzalloc instead of kmalloc
    - lpfc: Update version to 11.0.0.10 for upstream patch set

  * Miscellaneous Ubuntu changes
    - [Config] CONFIG_ARM64_VA_BITS=48
    - [Config] Fixed Vcs-Git

  * Miscellaneous upstream changes
    - cxl: Fix possible idr warning when contexts are released
    - cxl: use correct operator when writing pcie config space values
    - cxlflash: drop unlikely before IS_ERR_OR_NULL
    - cxl: Fix DSI misses when the context owning task exits
    - cxlflash: Removed driver date print
    - cxlflash: Fix to resolve cmd leak after host reset
    - cxlflash: Resolve oops in wait_port_offline
    - cxlflash: Enable device id for future IBM CXL adapter
    - cxl: fix build for GCC 4.6.x
    - cxl: use -Werror only with CONFIG_PPC_WERROR
    - cxl: Enable PCI device ID for future IBM CXL adapter

 -- Andy Whitcroft <apw@xxxxxxxxxxxxx>  Fri, 05 Feb 2016 14:58:51 +0000

** Changed in: linux (Ubuntu Xenial)
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1541671

Title:
  backport Microsoft Precision Touchpad palm rejection patch

Status in linux package in Ubuntu:
  Fix Released
Status in linux source package in Xenial:
  Fix Released

Bug description:
  The Broadwell XPS 13 (with touchpad in the more feature rich I2C 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.

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