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[Bug 1550839] Re: wakealarm is cleared on boot unless hpet disabled


First, I am surprised and pleased that ASRock is still issuing firmware
updates for such an old motherboard.  There was an update issued weeks
before I opened this bug report.

Firmware updated from 2.50 to 2.60.  The stated fix in the firmware
update has nothing to do with this bug - but the stated improvements are
often wildly incomplete.

$ sudo dmidecode -s bios-version && sudo dmidecode -s bios-release-date
[sudo] password for psd: 

*A* bug still exists, but it is not what I thought it was.

The wakealarm is not being cleared when 16.04 starts.  It is being
cleared when 14.04 (and others) stop.  "shutdown" preserves wakealarm
(hence my MthyTV setup is working well) but "reboot", and I suspect
"poweroff" clear the wakealarm, causing the apparent problem in 16.04
when I rebooted to test the new release.  I suspect that "hpet" was just
a co-incidence.

This bug report needs to be renamed, I'm just not sure what to.

** Changed in: linux (Ubuntu)
       Status: Incomplete => Confirmed

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  wakealarm is cleared on boot unless hpet disabled

Status in linux package in Ubuntu:

Bug description:
  Wiley Werewolf 15.10 and Xenial Xerus 16.04 (alpha) clear
  /sys/class/rtc/rtc0/wakealarm during the bootup process, unless
  "hpet=disable" is given as a boot parameter.  (Tested on Xenia, not
  tested on Wiley.)

  Trusty Tahr 14.04 is well behaved, without the hpet parameter.

  Background; the main installation runs MythTV which sets and uses the
  wake alarm.  A test boot into a newer OS clears the alarm and MythTV
  on Trusty does not wake up to record the next scheduled TV program.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-generic
  ProcVersionSignature: Ubuntu 4.4.0-2.16-generic 4.4.0
  Uname: Linux 4.4.0-2-generic x86_64
  ApportVersion: 2.19.4-0ubuntu2
  Architecture: amd64
   /dev/snd/controlC1:  psd        1154 F.... pulseaudio
   /dev/snd/controlC0:  psd        1154 F.... pulseaudio
  CurrentDesktop: XFCE
  Date: Sun Feb 28 12:28:59 2016
  HibernationDevice: RESUME=UUID=2f3325b3-f04c-4c61-98b8-d4a23624b37a
  InstallationDate: Installed on 2016-02-03 (24 days ago)
  InstallationMedia: Xubuntu 16.04 LTS "Xenial Xerus" - Alpha amd64 (20160202)
   enp5s0    no wireless extensions.
   lo        no wireless extensions.
  MachineType: To Be Filled By O.E.M. To Be Filled By O.E.M.
  ProcFB: 0 nouveaufb
  ProcKernelCmdLine: \vmlinuz ro root=LABEL=XX quiet splash bootdegraded=true video=vesa:off  hpet=disable initrd=\initrd.img
   linux-restricted-modules-4.4.0-2-generic N/A
   linux-backports-modules-4.4.0-2-generic  N/A
   linux-firmware                           1.155
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 01/08/2016
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: P2.50
  dmi.board.name: 970 Pro3 R2.0
  dmi.board.vendor: ASRock
  dmi.chassis.asset.tag: To Be Filled By O.E.M.
  dmi.chassis.type: 3
  dmi.chassis.vendor: To Be Filled By O.E.M.
  dmi.chassis.version: To Be Filled By O.E.M.
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrP2.50:bd01/08/2016:svnToBeFilledByO.E.M.:pnToBeFilledByO.E.M.:pvrToBeFilledByO.E.M.:rvnASRock:rn970Pro3R2.0:rvr:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.:
  dmi.product.name: To Be Filled By O.E.M.
  dmi.product.version: To Be Filled By O.E.M.
  dmi.sys.vendor: To Be Filled By O.E.M.

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