** Changed in: linux (Ubuntu)
Importance: Undecided => Medium
** Also affects: linux (Ubuntu Xenial)
Importance: Undecided
Status: New
** Changed in: linux (Ubuntu)
Importance: Medium => High
** Changed in: linux (Ubuntu Xenial)
Importance: Undecided => High
** Changed in: linux (Ubuntu Xenial)
Status: New => Triaged
** Changed in: linux (Ubuntu)
Status: Confirmed => Triaged
** Tags added: kernel-da-key
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https://bugs.launchpad.net/bugs/1668356
Title:
Hard lockup after 4 hours uptime
Status in linux package in Ubuntu:
Triaged
Status in linux source package in Xenial:
Triaged
Bug description:
We have recently deployed intel NUC6i5 devices in store for POS
display and are encountering strange inexplicable freezes on several
devices.
What is very strange is that all devices are freezing exactly 4h after
boot.
We have had this exact same issue on more than 20 devices (over 100),
with parts from different batches, and all did freeze exactly 4h after
boot (but it's not reproducible, it won't freeze every day). Some
devices are playing MPV videos, while other run chromium. They are
running non-stop, but are all rebooting daily at 05h05.
Looks like it might be related to https://lkml.org/lkml/2015/6/11/787
That seem to have been fixed and backported already
https://lkml.org/lkml/2015/10/17/259
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: linux-image-4.4.0-64-generic 4.4.0-64.85
ProcVersionSignature: Ubuntu 4.4.0-64.85-generic 4.4.44
Uname: Linux 4.4.0-64-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.4
Architecture: amd64
Date: Mon Feb 27 21:06:44 2017
InstallationDate: Installed on 2016-06-08 (264 days ago)
InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64
(20160420.1)
Lsusb:
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 003: ID 8087:0a2b Intel Corp.
Bus 001 Device 002: ID 067b:2303 Prolific Technology, Inc. PL2303 Serial Port
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-64-generic.efi.signed
root=UUID=1f60f9c9-bbf1-45df-bdc3-9b4da883839e ro quiet splash net.ifnames=0
vt.handoff=7
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.board.name: NUC6i5SYB
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