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[Diego <1197871@xxxxxxxxxxxxxxxxxx>]

https://lkml.org/lkml/2014/1/2/352

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https://bugs.launchpad.net/bugs/1197871

Title:
  [Gigabyte GA-MA78GPM-DS2H] ACPI wakeup fails if HPET enabled in BIOS

Status in “linux” package in Ubuntu:
  Triaged

Bug description:
  if I type this (as root):
  echo `date '+%s' -d '+ 5 minutes'` > /sys/class/rtc/rtc0/wakealarm

  or:
  rtcwake -d rtc0 -u -m no -t `date '+%s' -d '+ 5 minutes'`

  and then I shutdown the computer, it used to wake up after 5 minutes
  until I upgraded from linux-image-3.8.0-23-generic to a newer package.
  I've always had HPET enabled in BIOS.

  Maybe it's related to this patch found in the changelog
  zdiff /usr/share/doc/linux-image-3.8.0-23-generic/changelog.Debian.gz /usr/share/doc/linux-image-3.8.0-24-generic/changelog.Debian.gz | grep hpet
  >   * drivers/rtc/rtc-cmos.c: don't disable hpet emulation on suspend

  WORKAROUND: If I disable HPET in BIOS, my computer successfully wakes
  up in kernels > 3.8.0-23

  ProblemType: Bug
  DistroRelease: Ubuntu 13.04
  Package: linux-image-3.8.0-26-generic 3.8.0-26.38
  ProcVersionSignature: Ubuntu 3.8.0-26.38-generic 3.8.13.2
  Uname: Linux 3.8.0-26-generic x86_64
  NonfreeKernelModules: nvidia
  ApportVersion: 2.9.2-0ubuntu8.2
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  usuario    2971 F.... pulseaudio
  CRDA: Error: command ['iw', 'reg', 'get'] failed with exit code 1: nl80211 not found.
  Date: Thu Jul  4 17:32:03 2013
  HibernationDevice:
   #RESUME=UUID=e38f6a8b-948e-434c-a8e1-eb1e207dad4f
   RESUME=UUID=3ddd6504-083d-4af2-bcaa-5af1dbbf1f77
  IwConfig:
   eth0      no wireless extensions.

   lo        no wireless extensions.
  MachineType: Gigabyte Technology Co., Ltd. GA-MA78GPM-DS2H
  MarkForUpload: True
  ProcFB: 0 VESA VGA
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.8.0-26-generic root=UUID=22b58a09-ddc9-4068-8d9c-d225ad781780 ro quiet splash
  RelatedPackageVersions:
   linux-restricted-modules-3.8.0-26-generic N/A
   linux-backports-modules-3.8.0-26-generic  N/A
   linux-firmware                            1.106
  RfKill:

  SourcePackage: linux
  UpgradeStatus: Upgraded to raring on 2013-05-02 (63 days ago)
  WpaSupplicantLog:

  dmi.bios.date: 12/25/2010
  dmi.bios.vendor: Award Software International, Inc.
  dmi.bios.version: F6h
  dmi.board.name: GA-MA78GPM-DS2H
  dmi.board.vendor: Gigabyte Technology Co., Ltd.
  dmi.board.version: x.x
  dmi.chassis.type: 3
  dmi.chassis.vendor: Gigabyte Technology Co., Ltd.
  dmi.modalias: dmi:bvnAwardSoftwareInternational,Inc.:bvrF6h:bd12/25/2010:svnGigabyteTechnologyCo.,Ltd.:pnGA-MA78GPM-DS2H:pvr:rvnGigabyteTechnologyCo.,Ltd.:rnGA-MA78GPM-DS2H:rvrx.x:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvr:
  dmi.product.name: GA-MA78GPM-DS2H
  dmi.sys.vendor: Gigabyte Technology Co., Ltd.

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