Comment 0 for bug 1752536

:~$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 16.04.4 LTS
Release: 16.04
Codename: xenial

:~$ uname -r
4.4.0-116-generic

The problem
:~$ dmesg | grep i915
[ 0.991220] [drm:i915_dump_device_info] i915 device info: gen=9, pciid=0x5902 rev=0x04 flags=need_gfx_hws,is_kabylake,has_fbc,has_hotplug,has_llc,has_ddi,has_fpga_dbg,
[ 0.991711] [drm:i915_gem_init_stolen] Memory reserved for graphics device: 65536K, usable: 64512K
[ 0.992136] [drm:i915_ggtt_init_hw] GMADR size = 256M
[ 0.992137] [drm:i915_ggtt_init_hw] GTT stolen size = 64M
[ 0.992138] [drm:i915_ggtt_init_hw] ppgtt mode: 3
[ 1.001094] [drm:intel_csr_ucode_init] Loading i915/kbl_dmc_ver1.bin
[ 1.001114] i915_bpo 0000:00:02.0: Direct firmware load for i915/kbl_dmc_ver1.bin failed with error -2
[ 1.001119] i915_bpo 0000:00:02.0: Failed to load DMC firmware [https://01.org/linuxgraphics/intel-linux-graphics-firmwares], disabling runtime power management.
[ 1.005895] [drm:i915_gem_object_create_stolen_for_preallocated] creating preallocated stolen object: stolen_offset=0, gtt_offset=0, size=408000
[ 1.005897] [drm:i915_pages_create_for_stolen] offset=0x0, size=4227072
[ 1.006228] [drm:i915_gem_setup_global_gtt] reserving preallocated space: 0 + 408000
[ 1.006230] [drm:i915_gem_setup_global_gtt] clearing unused GTT space: [408000, fffff000]
[ 1.007450] [drm:i915_gem_context_init] LR context support initialized
[ 1.010861] [drm] Initialized i915_bpo 1.6.0 20160425 for 0000:00:02.0 on minor 0
[ 1.857985] i915_bpo 0000:00:02.0: fb0: inteldrmfb frame buffer device
[ 11.248704] snd_hda_intel 0000:00:1f.3: bound 0000:00:02.0 (ops i915_audio_component_bind_ops [i915_bpo])
[ 18.739304] [drm:i915_gem_open]
[ 18.739408] [drm:i915_gem_open]
[ 18.739484] [drm:i915_gem_open]
[ 18.739524] [drm:i915_gem_open]
[ 33.631792] [drm:i915_gem_open]
[ 35.515257] [drm:i915_gem_open]
[ 35.582793] [drm:i915_gem_open]
[ 42.823681] [drm:i915_gem_open]
[ 47.557725] [drm:i915_audio_component_sync_audio_rate] Not valid for port C
[ 47.565183] [drm:i915_audio_component_sync_audio_rate] Not valid for port C
[ 47.566992] [drm:i915_audio_component_sync_audio_rate] Not valid for port C
[ 47.573099] [drm:i915_audio_component_sync_audio_rate] Not valid for port C
[ 47.574721] [drm:i915_audio_component_sync_audio_rate] Not valid for port C
[ 47.581074] [drm:i915_audio_component_sync_audio_rate] Not valid for port C
[ 960.035670] [drm:i915_audio_component_sync_audio_rate] Not valid for port C
[ 960.044499] [drm:i915_audio_component_sync_audio_rate] Not valid for port C
[ 960.046373] [drm:i915_audio_component_sync_audio_rate] Not valid for port C
[ 960.052451] [drm:i915_audio_component_sync_audio_rate] Not valid for port C
[ 960.054246] [drm:i915_audio_component_sync_audio_rate] Not valid for port C
[ 960.060454] [drm:i915_audio_component_sync_audio_rate] Not valid for port C
[ 969.549771] [drm:i915_gem_open]
[ 969.704665] [drm:i915_gem_context_create_ioctl] HW context 1 created
[ 969.794654] [drm:i915_gem_context_destroy_ioctl] HW context 1 destroyed
[ 1125.305318] [drm:i915_gem_open]
[ 1125.328165] [drm:i915_gem_context_create_ioctl] HW context 1 created
[ 1125.333583] [drm:i915_gem_context_destroy_ioctl] HW context 1 destroyed
[ 1227.799188] [drm:i915_gem_open]
[ 1227.806911] [drm:i915_gem_context_create_ioctl] HW context 1 created
[ 1227.807865] [drm:i915_gem_context_destroy_ioctl] HW context 1 destroyed
[ 1436.623061] [drm:i915_gem_open]
[ 1436.629327] [drm:i915_gem_context_create_ioctl] HW context 1 created
[ 1436.630138] [drm:i915_gem_context_destroy_ioctl] HW context 1 destroyed
[ 1459.597494] [drm:i915_gem_open]
[ 1459.603754] [drm:i915_gem_context_create_ioctl] HW context 1 created
[ 1459.604550] [drm:i915_gem_context_destroy_ioctl] HW context 1 destroyed

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: linux-firmware 1.157.17
ProcVersionSignature: Ubuntu 4.4.0-116.140-generic 4.4.98
Uname: Linux 4.4.0-116-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.15
Architecture: amd64
CurrentDesktop: LXDE
Date: Thu Mar 1 10:30:27 2018
Dependencies:

InstallationDate: Installed on 2016-11-19 (466 days ago)
InstallationMedia:

PackageArchitecture: all
SourcePackage: linux-firmware
UpgradeStatus: Upgraded to xenial on 2016-11-20 (465 days ago)