[HP Proliant m400] hwclock change won't take effect immediately

Bug #1716603 reported by Po-Hsu Lin
This bug affects 1 person
Affects Status Importance Assigned to Milestone
linux (Ubuntu)

Bug Description

So far this issue was only spotted on this specific hardware. And can be seen from kernel 3.13~4.12
Not sure if this is a bug to the software or the hardware.

Test case:
 sudo /sbin/hwclock --set --date "2/2/80 03:04:00"; sudo LC_ALL=C /sbin/hwclock

Expected result:
 * You should see the clock has been changed to 1980

Actual result:
 * It's still showing the current time and date. But if you check it again later (about 1 or 2 seconds) with "sudo hwclock", you will see the updated time and date.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: linux-image-4.4.0-93-generic 4.4.0-93.116
ProcVersionSignature: User Name 4.4.0-93.116-generic 4.4.79
Uname: Linux 4.4.0-93-generic aarch64
 total 0
 crw-rw---- 1 root audio 116, 1 Sep 12 07:55 seq
 crw-rw---- 1 root audio 116, 33 Sep 12 07:55 timer
AplayDevices: Error: [Errno 2] No such file or directory: 'aplay'
ApportVersion: 2.20.1-0ubuntu2.10
Architecture: arm64
ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord'
AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
Date: Tue Sep 12 07:57:28 2017
IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig'
Lsusb: Error: command ['lsusb'] failed with exit code 1:

 PATH=(custom, no user)

ProcKernelCmdLine: console=ttyS0,9600n8r ro
 linux-restricted-modules-4.4.0-93-generic N/A
 linux-backports-modules-4.4.0-93-generic N/A
 linux-firmware 1.157.12
RfKill: Error: [Errno 2] No such file or directory: 'rfkill'
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)

Revision history for this message
Po-Hsu Lin (cypressyew) wrote :
Revision history for this message
Ubuntu Kernel Bot (ubuntu-kernel-bot) wrote : Status changed to Confirmed

This change was made by a bot.

Changed in linux (Ubuntu):
status: New → Confirmed
Po-Hsu Lin (cypressyew)
description: updated
description: updated
Changed in linux (Ubuntu):
importance: Undecided → Medium
tags: added: kernel-da-key
Revision history for this message
Sean Feole (sfeole) wrote :

This was an old mcdivitt issue I was involved in back in the day, the hardware we were using was on development FW and still is. Will close out if it's still an issue and reproducible on stable hardware then we can work it.

Changed in ubuntu-kernel-tests:
status: New → Invalid
Changed in linux (Ubuntu):
status: Confirmed → Invalid
Brad Figg (brad-figg)
tags: added: cscc
To post a comment you must log in.
This report contains Public information  
Everyone can see this information.

Other bug subscribers