The lkml tread you referenced in the bug description was for commit 37b12910dd11d9ab969f2c310dc9160b7f3e3405. That commit landed upstream in v4.3.rc1, so it is already in the 4.4 based Xenial kernel.
Did this issue start happening after a recent upgrade, or after applying updates? -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. 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 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1668356/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
