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[Launchpad Bug Tracker <1759188@xxxxxxxxxxxxxxxxxx>]

This bug was fixed in the package linux - 4.13.0-39.44

---------------
linux (4.13.0-39.44) artful; urgency=medium

  * linux: 4.13.0-39.44 -proposed tracker (LP: #1761456)

  * intel-microcode 3.20180312.0 causes lockup at login screen(w/ linux-
    image-4.13.0-37-generic) (LP: #1759920) // CVE-2017-5715 (Spectre v2
    Intel) // CVE-2017-5754
    - x86/mm: Reinitialize TLB state on hotplug and resume

  * intel-microcode 3.20180312.0 causes lockup at login screen(w/ linux-
    image-4.13.0-37-generic) (LP: #1759920) // CVE-2017-5715 (Spectre v2 Intel)
    - Revert "x86/mm: Only set IBPB when the new thread cannot ptrace current
      thread"
    - x86/speculation: Use Indirect Branch Prediction Barrier in context switch

  * DKMS driver builds fail with: Cannot use CONFIG_STACK_VALIDATION=y, please
    install libelf-dev, libelf-devel or elfutils-libelf-devel (LP: #1760876)
    - [Packaging] include the retpoline extractor in the headers

  * retpoline hints: primary infrastructure and initial hints (LP: #1758856)
    - [Packaging] retpoline-extract: flag *0xNNN(%reg) branches
    - x86/speculation, objtool: Annotate indirect calls/jumps for objtool
    - x86/speculation, objtool: Annotate indirect calls/jumps for objtool on 32bit
    - x86/paravirt, objtool: Annotate indirect calls
    - [Packaging] retpoline -- add safe usage hint support
    - [Packaging] retpoline-check -- only report additions
    - [Packaging] retpoline -- widen indirect call/jmp detection
    - [Packaging] retpoline -- elide %rip relative indirections
    - [Packaging] retpoline -- clear hint information from packages
    - KVM: x86: Make indirect calls in emulator speculation safe
    - KVM: VMX: Make indirect call speculation safe
    - x86/boot, objtool: Annotate indirect jump in secondary_startup_64()
    - SAUCE: early/late -- annotate indirect calls in early/late initialisation
      code
    - SAUCE: vga_set_mode -- avoid jump tables
    - [Config] retpoline -- switch to new format
    - [Packaging] retpoline hints -- handle missing files when RETPOLINE not
      enabled
    - [Packaging] final-checks -- remove check for empty retpoline files

  * retpoline: ignore %cs:0xNNN constant indirections (LP: #1752655)
    - [Packaging] retpoline -- elide %cs:0xNNNN constants on i386

  * zfs system process hung on container stop/delete (LP: #1754584)
    - SAUCE: Fix non-prefaulted page deadlock (LP: #1754584)

  * zfs-linux 0.6.5.11-1ubuntu5 ADT test failure with linux 4.15.0-1.2
    (LP: #1737761)
    - SAUCE: (noup) Update zfs to 0.6.5.11-1ubuntu3.2

  * AT_BASE_PLATFORM in AUXV is absent on kernels available on Ubuntu 17.10
    (LP: #1759312)
    - powerpc/64s: Fix NULL AT_BASE_PLATFORM when using DT CPU features

  * btrfs and tar sparse truncate archives (LP: #1757565)
    - Btrfs: move definition of the function btrfs_find_new_delalloc_bytes
    - Btrfs: fix reported number of inode blocks after buffered append writes

  * efifb broken on ThunderX-based Gigabyte nodes (LP: #1758375)
    - drivers/fbdev/efifb: Allow BAR to be moved instead of claiming it

  * Intel i40e PF reset due to incorrect MDD detection (continues...)
    (LP: #1723127)
    - i40e/i40evf: Account for frags split over multiple descriptors in check
      linearize

  * Fix an issue that when system in S3, USB keyboard can't wake up the system.
    (LP: #1759511)
    - ACPI / PM: Allow deeper wakeup power states with no _SxD nor _SxW

  * [8086:3e92] display becomes blank after S3 (LP: #1759188)
    - drm/i915: Apply Display WA #1183 on skl, kbl, and cfl

  * add audio kernel patches for Raven (LP: #1758364)
    - ALSA: hda: Add Raven PCI ID
    - ALSA: hda/realtek - Fix ALC700 family no sound issue

  * Cpu utilization showing system time for kvm guests (performance) (sysstat)
    (LP: #1755979)
    - KVM: PPC: Book3S HV: Fix guest time accounting with VIRT_CPU_ACCOUNTING_GEN

  * Kernel panic on a nfsroot system (LP: #1734327)
    - Revert "UBUNTU: SAUCE: LSM stacking: add stacking support to apparmor
      network hooks"
    - Revert "UBUNTU: SAUCE: LSM stacking: LSM: Infrastructure management of the
      remaining blobs"

  * can't record sound via front headset port on the Dell Precision 3630
    (LP: #1759088)
    - ALSA: hda/realtek - Fix Dell headset Mic can't record

  * speaker can't output sound anymore after system resumes from S3 on a lenovo
    machine with alc257 (LP: #1758829)
    - ALSA: hda/realtek - Fix speaker no sound after system resume

  * hda driver initialization takes too much time on the machine with coffeelake
    audio controller [8086:a348] (LP: #1758800)
    - ALSA: hda - Force polling mode on CFL for fixing codec communication

  * Let headset-mode initialization be called on Dell Precision 3930
    (LP: #1757584)
    - ALSA: hda/realtek - Add headset mode support for Dell laptop

  * ubuntu_zram_smoke test will cause soft lockup on Artful ThunderX ARM64
    (LP: #1755073)
    - SAUCE: crypto: thunderx_zip: Fix fallout from CONFIG_VMAP_STACK

  * [Hyper-V] include kvp fix for Avoid reading past allocated blocks from KVP
    file (LP: #1750349)
    - hv: kvp: Avoid reading past allocated blocks from KVP file

  * IMA policy parsing is broken in 4.13 (LP: #1755804)
    - ima/policy: fix parsing of fsuuid

  * external mic not work on Dell OptiPlex 7460 AIO (LP: #1755954)
    - ALSA: hda/realtek - Add headset mode support for Dell laptop

  * sbsa watchdog crashes thunderx2 system (LP: #1755595)
    - watchdog: sbsa: use 32-bit read for WCV

  * CVE-2018-8043
    - net: phy: mdio-bcm-unimac: fix potential NULL dereference in
      unimac_mdio_probe()

 -- Stefan Bader <stefan.bader@xxxxxxxxxxxxx>  Thu, 05 Apr 2018 14:47:00
+0200

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

** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2017-5715

** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2017-5754

** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2018-8043

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https://bugs.launchpad.net/bugs/1759188

Title:
  [8086:3e92] display becomes blank after S3

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

Bug description:
  [Impact]
  The display becomes black after S3 with the following error messages.

  [   38.304449] [drm:gmbus_xfer [i915]] GMBUS [i915 gmbus dpd] NAK for addr: 0050 w(1)
  [   38.304462] [drm:gmbus_xfer [i915]] GMBUS [i915 gmbus dpd] NAK on first message, retry
  [   38.306726] [drm:gmbus_xfer [i915]] GMBUS [i915 gmbus dpd] NAK for addr: 0050 w(1)
  [   38.306733] [drm:drm_do_probe_ddc_edid [drm]] drm: skipping non-existent adapter i915 gmbus dpd
  [   38.311251] [drm:drm_dp_dual_mode_detect [drm_kms_helper]] DP dual mode HDMI ID: DP-HDMI ADAPTOR\004 (err 0)
  [   38.313538] [drm:drm_dp_dual_mode_detect [drm_kms_helper]] DP dual mode adaptor ID: 44 (err 0)
  [   38.313554] [drm:intel_hdmi_set_edid [i915]] DP dual mode adaptor (type 1 HDMI) detected (max TMDS clock: 165000 kHz)
  [   38.313557] [drm:drm_helper_hpd_irq_event [drm_kms_helper]] [CONNECTOR:115:HDMI-A-1] status updated from disconnected to disconnected

  [Fix]
  This commit pointed out by Timo fixes the issue.

  [Regression Potential]
  Should be low, although the change applies broadly.
  From the patch description, it explains it should be safe.
  > This workaround was designed to minimize the impact only
  > to save the bad case with that link rates. But HW engineers
  > indicated that it should be safe to apply broadly, although
  > they were expecting the DPLL0 link rate to be unchanged on
  > runtime.

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