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[Launchpad Bug Tracker <1774306@xxxxxxxxxxxxxxxxxx>]

This bug was fixed in the package linux-oem - 4.13.0-1031.35

---------------
linux-oem (4.13.0-1031.35) xenial; urgency=medium

  * linux-oem: 4.13.0-1031.35 -proposed tracker (LP: #1776337)

  * Miscellaneous Ubuntu changes
    - Rebase to 4.13.0-46.51
    - SAUCE: i2c:amd move out pointer in union i2c_event_base

  [ Ubuntu: 4.13.0-46.51 ]

  * linux: 4.13.0-46.51 -proposed tracker (LP: #1776333)
  * register on binfmt_misc may overflow and crash the system (LP: #1775856)
    - fs/binfmt_misc.c: do not allow offset overflow
  * CVE-2018-11508
    - compat: fix 4-byte infoleak via uninitialized struct field
  * rfi-flush: Switch to new linear fallback flush (LP: #1744173)
    - SAUCE: rfi-flush: Factor out init_fallback_flush()
    - SAUCE: rfi-flush: Move rfi_flush_fallback_area to end of paca
    - powerpc/64s: Improve RFI L1-D cache flush fallback
    - powerpc/rfi-flush: Make it possible to call setup_rfi_flush() again
    - powerpc/rfi-flush: Differentiate enabled and patched flush types
    - powerpc/rfi-flush: Call setup_rfi_flush() after LPM migration
  * Fix enabling bridge MMIO windows (LP: #1771344)
    - powerpc/eeh: Fix enabling bridge MMIO windows
  * CVE-2018-1130
    - dccp: check sk for closed state in dccp_sendmsg()
  * CVE-2018-7757
    - scsi: libsas: fix memory leak in sas_smp_get_phy_events()
  * cpum_sf: ensure sample freq is non-zero (LP: #1772593)
    - s390/cpum_sf: ensure sample frequency of perf event attributes is non-zero
  * wlp3s0: failed to remove key (1, ff:ff:ff:ff:ff:ff) from hardware (-22)
    (LP: #1720930)
    - iwlwifi: mvm: fix "failed to remove key" message
  * CVE-2018-6927
    - futex: Prevent overflow by strengthen input validation
  * After update to 4.13-43 Intel Graphics are Laggy (LP: #1773520)
    - SAUCE: Revert "drm/i915/edp: Allow alternate fixed mode for eDP if
      available."
  * ELANPAD ELAN0612 does not work, patch available (LP: #1773509)
    - SAUCE: Input: elan_i2c - add ELAN0612 to the ACPI table
  * kernel backtrace when receiving large UDP packages (LP: #1772031)
    - iov_iter: fix page_copy_sane for compound pages
  * FS-Cache: Assertion failed: FS-Cache: 6 == 5 is false (LP: #1774336)
    - SAUCE: CacheFiles: fix a read_waiter/read_copier race
  * CVE-2018-5803
    - sctp: verify size of a new chunk in _sctp_make_chunk()
  * enable mic-mute hotkey and led on Lenovo M820z and M920z (LP: #1774306)
    - ALSA: hda/realtek - Enable mic-mute hotkey for several Lenovo AIOs
  * CVE-2018-7755
    - SAUCE: floppy: Do not copy a kernel pointer to user memory in FDGETPRM ioctl
  * CVE-2018-5750
    - ACPI: sbshc: remove raw pointer from printk() message

 -- Chia-Lin Kao (AceLan) <acelan.kao@xxxxxxxxxxxxx>  Wed, 20 Jun 2018
14:04:03 +0800

** Changed in: linux-oem (Ubuntu Xenial)
       Status: In Progress => Fix Released

** Changed in: linux-oem (Ubuntu Xenial)
       Status: In Progress => Fix Released

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https://bugs.launchpad.net/bugs/1774306

Title:
  enable mic-mute hotkey and led on Lenovo M820z and M920z

Status in HWE Next:
  New
Status in linux package in Ubuntu:
  Incomplete
Status in linux-oem package in Ubuntu:
  Fix Released
Status in linux source package in Xenial:
  Invalid
Status in linux-oem source package in Xenial:
  Fix Released
Status in linux source package in Artful:
  Fix Released
Status in linux source package in Bionic:
  Fix Released

Bug description:
  [Impact]
  M810z, M820z and M920z are Lenovo AIO machines, there is a mic-mute button with
  led on them, without this patch, the hotkey and led only works on M810z, if we
  want 820z and 920z to work, we need to add their subsystem id in the driver, but
  since they use same codec with same pin conf, we use a better way than adding id.

  [Fix]
  With this patch, all 3 machines applied ALC233_FIXUP_LENOVO_LINE2_MIC_HOTKEY.

  [Test Case]
  press mic-mute button, then check sound-setting, we found the input will mute or
  unmute as users press button, and led will on or off to indicate the input status.

  [Regression Potential]
  Very low, through the strictly match the pin conf, codec id and vendor id, this
  fix only apply to M810z, M820z and M920z.

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