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


** Changed in: linux (Ubuntu)
   Importance: Undecided => Medium

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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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