Mic mute hotkey does not work on usb keyboard [03f0:2f4a]

[AceLan Kao]

Press the MIC mute function key on the USB keyboard [03f0:2f4a] doesn't emit any keyevent nor acpi event.

    T: Bus=02 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#= 23 Spd=1.5 MxCh= 0
    D: Ver= 2.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS= 8 #Cfgs= 1
    P: Vendor=03f0 ProdID=2f4a Rev=00.10
    S: Manufacturer=Chicony
    S: Product=HP Business Slim Keyboard
    C: #Ifs= 2 Cfg#= 1 Atr=a0 MxPwr=100mA
    I: If#= 0 Alt= 0 #EPs= 1 Cls=03(HID ) Sub=01 Prot=01 Driver=usbhid
    I: If#= 1 Alt= 0 #EPs= 1 Cls=03(HID ) Sub=00 Prot=00 Driver=usbhid

[AceLan Kao (acelankao)]

Patch has been submitted to the upstream.

[AceLan Kao (acelankao)]

Would be in 4.8 upstream kernel

commit 70e215824134543b75e33236a1988542e9202a07 (HEAD -> refs/heads/master)
Author: AceLan Kao <email address hidden>
Date: Wed Aug 3 10:44:26 2016 +0800

    HID: input: add mic mute key on HP slim keyboard

    Add MIC mute key which is found on HP Business Slim Keyboard

    T: Bus=02 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#= 23 Spd=1.5 MxCh= 0
    D: Ver= 2.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS= 8 #Cfgs= 1
    P: Vendor=03f0 ProdID=2f4a Rev=00.10
    S: Manufacturer=Chicony
    S: Product=HP Business Slim Keyboard
    C: #Ifs= 2 Cfg#= 1 Atr=a0 MxPwr=100mA
    I: If#= 0 Alt= 0 #EPs= 1 Cls=03(HID ) Sub=01 Prot=01 Driver=usbhid
    I: If#= 1 Alt= 0 #EPs= 1 Cls=03(HID ) Sub=00 Prot=00 Driver=usbhid

    Signed-off-by: AceLan Kao <email address hidden>

[AceLan Kao (acelankao)]

SRU for Xenial kernel is submitted.

[Tim Gardner (timg-tpi)]

This bug is awaiting verification that the kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-xenial' to 'verification-done-xenial'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

[AceLan Kao (acelankao)]

The hotkey works on 4.4.0-38.57

[Launchpad Janitor (janitor)]

This bug was fixed in the package linux - 4.4.0-38.57

---------------
linux (4.4.0-38.57) xenial; urgency=low

  [ Tim Gardner ]

  * Release Tracking Bug
    - LP: #1620658

  * CIFS client: access problems after updating to kernel 4.4.0-29-generic
    (LP: #1612135)
    - Revert "UBUNTU: SAUCE: (namespace) Bypass sget() capability check for nfs"
    - fs: Call d_automount with the filesystems creds

  * apt-key add fails in overlayfs (LP: #1618572)
    - SAUCE: overlayfs: fix regression in whiteout detection

linux (4.4.0-37.56) xenial; urgency=low

  [ Tim Gardner ]

  * Release Tracking Bug
    - LP: #1618040

  * [Feature] Instruction decoder support for new SKX instructions- AVX512
    (LP: #1591655)
    - x86/insn: perf tools: Fix vcvtph2ps instruction decoding
    - x86/insn: Add AVX-512 support to the instruction decoder
    - perf tools: Add AVX-512 support to the instruction decoder used by Intel PT
    - perf tools: Add AVX-512 instructions to the new instructions test

  * [Ubuntu 16.04] FCoE Lun not visible in OS with inbox driver - Issue with
    ioremap() call on 32bit kernel (LP: #1608652)
    - lpfc: Correct issue with ioremap() call on 32bit kernel

  * [Feature] turbostat support for Skylake-SP server (LP: #1591802)
    - tools/power turbostat: decode more CPUID fields
    - tools/power turbostat: CPUID(0x16) leaf shows base, max, and bus frequency
    - tools/power turbostat: decode HWP registers
    - tools/power turbostat: Decode MSR_MISC_PWR_MGMT
    - tools/power turbostat: allow sub-sec intervals
    - tools/power turbostat: Intel Xeon x200: fix erroneous bclk value
    - tools/power turbostat: Intel Xeon x200: fix turbo-ratio decoding
    - tools/power turbostat: re-name "%Busy" field to "Busy%"
    - tools/power turbostat: add --out option for saving output in a file
    - tools/power turbostat: fix compiler warnings
    - tools/power turbostat: make fewer systems calls
    - tools/power turbostat: show IRQs per CPU
    - tools/power turbostat: show GFXMHz
    - tools/power turbostat: show GFX%rc6
    - tools/power turbostat: detect and work around syscall jitter
    - tools/power turbostat: indicate SMX and SGX support
    - tools/power turbostat: call __cpuid() instead of __get_cpuid()
    - tools/power turbostat: correct output for MSR_NHM_SNB_PKG_CST_CFG_CTL dump
    - tools/power turbostat: bugfix: TDP MSRs print bits fixing
    - tools/power turbostat: SGX state should print only if --debug
    - tools/power turbostat: print IRTL MSRs
    - tools/power turbostat: initial BXT support
    - tools/power turbostat: decode BXT TSC frequency via CPUID
    - tools/power turbostat: initial SKX support

  * [BYT] display hotplug doesn't work on console (LP: #1616894)
    - drm/i915/vlv: Make intel_crt_reset() per-encoder
    - drm/i915/vlv: Reset the ADPA in vlv_display_power_well_init()
    - drm/i915/vlv: Disable HPD in valleyview_crt_detect_hotplug()
    - drm/i915: Enable polling when we don't have hpd

  * [Feature]intel_idle enabling on Broxton-P (LP: #1520446)
    - intel_idle: add BXT support

  * [Feature] EDAC: Update driver for SKX-SP (LP: #1591815)
    - [Config] CONFIG_EDAC_SKX=m
    - EDAC, skx_edac: Ad...