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[Launchpad Bug Tracker <1763271@xxxxxxxxxxxxxxxxxx>]

This bug was fixed in the package linux - 4.13.0-43.48

---------------
linux (4.13.0-43.48) artful; urgency=medium

  * CVE-2018-3639 (powerpc)
    - SAUCE: rfi-flush: update H_CPU_* macro names to upstream
    - SAUCE: rfi-flush: update plpar_get_cpu_characteristics() signature to
      upstream
    - SAUCE: update pseries_setup_rfi_flush() capitalization to upstream
    - powerpc/pseries: Support firmware disable of RFI flush
    - powerpc/powernv: Support firmware disable of RFI flush
    - powerpc/64s: Allow control of RFI flush via debugfs
    - powerpc/rfi-flush: Move the logic to avoid a redo into the debugfs code
    - powerpc/rfi-flush: Always enable fallback flush on pseries
    - powerpc/rfi-flush: Differentiate enabled and patched flush types
    - powerpc/pseries: Add new H_GET_CPU_CHARACTERISTICS flags
    - powerpc: Add security feature flags for Spectre/Meltdown
    - powerpc/powernv: Set or clear security feature flags
    - powerpc/pseries: Set or clear security feature flags
    - powerpc/powernv: Use the security flags in pnv_setup_rfi_flush()
    - powerpc/pseries: Use the security flags in pseries_setup_rfi_flush()
    - powerpc/pseries: Fix clearing of security feature flags
    - powerpc: Move default security feature flags
    - powerpc/pseries: Restore default security feature flags on setup
    - powerpc/64s: Add support for a store forwarding barrier at kernel entry/exit

  * CVE-2018-3639 (x86)
    - SAUCE: Add X86_FEATURE_ARCH_CAPABILITIES
    - SAUCE: x86: Add alternative_msr_write
    - x86/nospec: Simplify alternative_msr_write()
    - x86/pti: Do not enable PTI on CPUs which are not vulnerable to Meltdown
    - x86/bugs: Concentrate bug detection into a separate function
    - x86/bugs: Concentrate bug reporting into a separate function
    - x86/msr: Add definitions for new speculation control MSRs
    - x86/bugs: Read SPEC_CTRL MSR during boot and re-use reserved bits
    - x86/bugs, KVM: Support the combination of guest and host IBRS
    - x86/bugs: Expose /sys/../spec_store_bypass
    - x86/cpufeatures: Add X86_FEATURE_RDS
    - x86/bugs: Provide boot parameters for the spec_store_bypass_disable
      mitigation
    - x86/bugs/intel: Set proper CPU features and setup RDS
    - x86/bugs: Whitelist allowed SPEC_CTRL MSR values
    - x86/bugs/AMD: Add support to disable RDS on Fam[15,16,17]h if requested
    - x86/KVM/VMX: Expose SPEC_CTRL Bit(2) to the guest
    - x86/speculation: Create spec-ctrl.h to avoid include hell
    - prctl: Add speculation control prctls
    - x86/process: Allow runtime control of Speculative Store Bypass
    - x86/speculation: Add prctl for Speculative Store Bypass mitigation
    - nospec: Allow getting/setting on non-current task
    - proc: Provide details on speculation flaw mitigations
    - seccomp: Enable speculation flaw mitigations
    - SAUCE: x86/bugs: Honour SPEC_CTRL default
    - x86/bugs: Make boot modes __ro_after_init
    - prctl: Add force disable speculation
    - seccomp: Use PR_SPEC_FORCE_DISABLE
    - seccomp: Add filter flag to opt-out of SSB mitigation
    - seccomp: Move speculation migitation control to arch code
    - x86/speculation: Make "seccomp" the default mode for Speculative Store
      Bypass
    - x86/bugs: Rename _RDS to _SSBD
    - proc: Use underscores for SSBD in 'status'
    - Documentation/spec_ctrl: Do some minor cleanups
    - x86/bugs: Fix __ssb_select_mitigation() return type
    - x86/bugs: Make cpu_show_common() static

  * LSM Stacking prctl values should be redefined as to not collide with
    upstream prctls (LP: #1769263) // CVE-2018-3639
    - SAUCE: LSM stacking: adjust prctl values

linux (4.13.0-42.47) artful; urgency=medium

  * linux: 4.13.0-42.47 -proposed tracker (LP: #1769993)

  * arm64: fix CONFIG_DEBUG_WX address reporting (LP: #1765850)
    - arm64: fix CONFIG_DEBUG_WX address reporting

  * HiSilicon HNS NIC names are truncated in /proc/interrupts (LP: #1765977)
    - net: hns: Avoid action name truncation

  * CVE-2017-18208
    - mm/madvise.c: fix madvise() infinite loop under special circumstances

  * CVE-2018-8822
    - staging: ncpfs: memory corruption in ncp_read_kernel()

  * CVE-2017-18203
    - dm: fix race between dm_get_from_kobject() and __dm_destroy()

  * CVE-2017-17449
    - netlink: Add netns check on taps

  * CVE-2017-17975
    - media: usbtv: prevent double free in error case

  * [8086:3e92] display becomes blank after S3 (LP: #1763271)
    - drm/i915/edp: Allow alternate fixed mode for eDP if available.
    - drm/i915/dp: rename intel_dp_is_edp to intel_dp_is_port_edp
    - drm/i915/dp: make is_edp non-static and rename to intel_dp_is_edp
    - drm/i915/edp: Do not do link training fallback or prune modes on EDP

  * sky2 gigabit ethernet driver sometimes stops working after lid-open resume
    from sleep (88E8055) (LP: #1758507)
    - sky2: Increase D3 delay to sky2 stops working after suspend

  * perf vendor events arm64: Enable JSON events for ThunderX2 B0 (LP: #1760712)
    - perf vendor events arm64: Enable JSON events for ThunderX2 B0

  * No network with e1000e driver on 4.13.0-38-generic (LP: #1762693)
    - e1000e: Fix e1000_check_for_copper_link_ich8lan return value.

  * /dev/ipmi enumeration flaky on Cavium Sabre nodes (LP: #1762812)
    - i2c: xlp9xx: return ENXIO on slave address NACK
    - i2c: xlp9xx: Handle transactions with I2C_M_RECV_LEN properly
    - i2c: xlp9xx: Check for Bus state before every transfer
    - i2c: xlp9xx: Handle NACK on DATA properly

  * "ip a" command on a guest VM shows UNKNOWN status (LP: #1761534)
    - virtio-net: Fix operstate for virtio when no VIRTIO_NET_F_STATUS

  * fix regression in mm/hotplug, allows NVIDIA driver to work (LP: #1761104)
    - SAUCE: Fix revert "mm, memory_hotplug: do not associate hotadded memory to
      zones until online"

  * ibrs/ibpb fixes result in excessive kernel logging  (LP: #1755627)
    - SAUCE: remove ibrs_dump sysctl interface

 -- Stefan Bader <stefan.bader@xxxxxxxxxxxxx>  Tue, 15 May 2018 07:39:26
+0200

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

** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2017-17449

** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2017-17975

** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2017-18203

** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2017-18208

** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2018-3639

** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2018-8822

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https://bugs.launchpad.net/bugs/1763271

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

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

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

  dmesg:
  [ 60.546305] [drm:intel_dp_start_link_train [i915]] Link Training failed at link rate = 540000, lane count = 4

  Xorg.0.log:
  [ 60.748] (EE) modeset(0): failed to set mode: Invalid argument
  [ 60.748] (WW) modeset(0): hotplug event: connector 48's link-state is BAD, tried resetting the current mode. You may be left with a black screen if this fails...

  [Fix]
  Looks like link training fallback fails sometimes with eDP, we need this commit to fix the issue.

  commit a306343bcd7df89d9d45a601929e26866e7b7a81 (refs/bisect/bad)
  Author: Manasi Navare <manasi.d.navare@xxxxxxxxx>
  Date: Thu Oct 12 12:13:38 2017 -0700

      drm/i915/edp: Do not do link training fallback or prune modes on
  EDP

  [Regression Potential]
  Should be low.
  To avoid conflicts, we introduce 4 commits, I'll try explaining them below

  a306343 drm/i915/edp: Do not do link training fallback or prune modes on EDP
     This is the fix commit and the behavior only changes when DP is eDP, it does nothing if DP is eDP. Should be fine to not do link training fallback and not emit Hotplug Uevent to userspace to start modeset, since its eDP, the display is fixed.

  1853a9d drm/i915/dp: make is_edp non-static and rename to intel_dp_is_edp
  7b91bf7 drm/i915/dp: rename intel_dp_is_edp to intel_dp_is_port_edp
     Above 2 commits do function name renaming only.

  dc911f5 drm/i915/edp: Allow alternate fixed mode for eDP if available.
     Change the prototype of function "intel_panel_init()" and adding one extra argument, should have small impact on the display.

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