the kernel hangs when reboot or shutdown on a lenovo baytrail-m based machine

Bug #1597564 reported by Hui Wang on 2016-06-30
This bug affects 1 person
Affects Status Importance Assigned to Milestone
HWE Next
Hui Wang
linux (Ubuntu)
Hui Wang
Hui Wang

Bug Description

1. System got hang on reboot of installation phase 1;
2. Power off system by long-press power button, then power on system again.
3. System got hang on power off of installation phase 2.

The hang issue blocked the installation. Can not finish the installation procession.

This bug is for tracking purposes; please do not triage.

Hui Wang ( on 2016-06-30
Changed in hwe-next:
importance: Undecided → Critical
assignee: nobody → Hui Wang (

This bug is missing log files that will aid in diagnosing the problem. From a terminal window please run:

apport-collect 1597564

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the Ubuntu Kernel Team.

Changed in linux (Ubuntu):
status: New → Incomplete
Hui Wang ( on 2016-06-30
Changed in hwe-next:
status: New → In Progress
Changed in linux (Ubuntu Vivid):
status: New → Fix Committed
assignee: nobody → Hui Wang (
Hui Wang ( on 2016-07-06
Changed in linux (Ubuntu Vivid):
importance: Undecided → Critical
Changed in linux (Ubuntu):
status: Incomplete → Fix Committed
Changed in hwe-next:
status: In Progress → Fix Committed
Seth Forshee (sforshee) wrote :

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-vivid' to 'verification-done-vivid'.

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 for documentation how to enable and use -proposed. Thank you!

tags: added: verification-needed-vivid
Seth Forshee (sforshee) wrote :

Hui: This bug still needs verification of the fix in the proposed kernel. Can you please verify it as soon as possible? Thanks!

Hui Wang ( on 2016-08-05
tags: added: verification-done-vivid
removed: verification-needed-vivid
Launchpad Janitor (janitor) wrote :

This bug was fixed in the package linux - 3.19.0-66.74

linux (3.19.0-66.74) vivid; urgency=low

  [ Seth Forshee ]

  * Release Tracking Bug
    - LP: #1604153

  * CVE-2016-1237
    - posix_acl: Add set_posix_acl
    - nfsd: check permissions when setting ACLs

  * changelog: add CVEs as first class citizens (LP: #1604344)
    - use CVE numbers in changelog

  * CVE-2016-5243 (LP: #1589036)
    - tipc: fix an infoleak in tipc_nl_compat_link_dump

  * CVE-2016-4470
    - KEYS: potential uninitialized variable

  * CVE-2016-4794 (LP: #1581871)
    - percpu: fix synchronization between chunk->map_extend_work and chunk
    - percpu: fix synchronization between synchronous map extension and chunk

  * qeth: delete napi struct when removing a qeth device (LP: #1601831)
    - qeth: delete napi struct when removing a qeth device

  * arm64: statically link rtc-efi (LP: #1583738)
    - [Config] Link rtc-efi statically on arm64

  * linux: Homogenize changelog format across releases (LP: #1599562)
    - Revert "UBUNTU: [debian] BugLink: close LP: bugs only for Launchpad urls"
    - [Debian] git-ubuntu-log -- switch to bug order
    - [Debian] git-ubuntu-log -- fix empty section formatting
    - [Debian] git-ubuntu-log -- output should be utf-8
    - [Debian] git-ubuntu-log -- handle invalid or private bugs
    - [Debian] git-ubuntu-log -- wrap long bug and commit titles
    - [Debian] git-ubuntu-log -- ensure we get the last commit
    - [Debian] git-ubuntu-log -- prevent bug references being split
    - [Debian] git-ubuntu-log -- git log output is UTF-8

  * exercising ptys causes a kernel oops (LP: #1586418)
    - devpts: fix null pointer dereference on failed memory allocation

  * the kernel hangs when reboot or shutdown on a lenovo baytrail-m based
    machine (LP: #1597564)
    - usb: xhci: Makefile: move xhci-pci and xhci-plat-hcd after xhci-hcd

  * [i915_bpo][SKL] Display core init/uninit updates (LP: #1595803)
    - SAUCE: i915_bpo: drm/i915: Extract a intel_power_well_enable() function
    - SAUCE: i915_bpo: drm/i915: Extract a intel_power_well_disable() function
    - SAUCE: i915_bpo: drm/i915/skl: Making DC6 entry is the last call in suspend
    - SAUCE: i915_bpo: drm/i915: Kill intel_runtime_pm_disable()
    - SAUCE: i915_bpo: drm/i915/gen9: csr_init after runtime pm enable
    - SAUCE: i915_bpo: drm/i915: use correct power domain for csr loading
    - SAUCE: i915_bpo: drm/i915/gen9: Don't try to load garbage dmc firmware on
    - SAUCE: i915_bpo: drm/i915/skl: Removed assert for csr-fw-loading check
      during disabling dc6
    - SAUCE: i915_bpo: drm/i915: fix the power well ID for always on wells
    - SAUCE: i915_bpo: drm/i915: fix lookup_power_well for power wells without any
    - SAUCE: i915_bpo: drm/i915: Make turning on/off PW1 and Misc I/O part of the
      init/fini sequences

 -- Seth Forshee <email address hidden> Tue, 19 Jul 2016 09:07:26 -0500

Changed in linux (Ubuntu Vivid):
status: Fix Committed → Fix Released
Hui Wang ( on 2016-08-19
Changed in linux (Ubuntu):
status: Fix Committed → Fix Released
Changed in hwe-next:
status: Fix Committed → Fix Released
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