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[Bug 665806] false battery alarm with realtime app running (jackd)

 

Thank you for taking the time to report this bug and helping to make
Ubuntu better. The issue that you reported is one that should be
reproducible with the live environment of the Desktop CD of the stable
release - Oneiric Ocelot. It would help us greatly if you could test
with it so we can work on getting it fixed. You can find out more about
it at http://www.ubuntu.com/download . Thanks again and we appreciate
your help.

** Changed in: gnome-power-manager (Ubuntu)
   Importance: Undecided => Low

** Changed in: gnome-power-manager (Ubuntu)
       Status: New => Incomplete

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https://bugs.launchpad.net/bugs/665806

Title:
  false battery alarm with realtime app running (jackd)

Status in “gnome-power-manager” package in Ubuntu:
  Incomplete

Bug description:
  Binary package hint: gnome-power-manager

  When I have the JACK daemon running with realtime priority on this MSI Wind U100 laptop and pull out the wall power, the system tells me that the battery is low and enters hibernation. The battery is full, though.
  If JACK is not active, nothing happens (just the battery symbol goes gray, which is irritating, but intended, I guess).

  This forced hibernation is particulary annoying as JACK really does
  not like going to sleep; it cannot be killed by an ordinary user after
  resume (meaning: stop it via the button in qjackctl); pkill -9 jackd
  is needed. But that's another bug in the JACK audio server that one
  could live with, wouldn't the system -- and I suspect it's called
  gnome-power-manager here -- force a suspend to disk.

  I'll check again if it's really just an issue when JACK has realtime
  priority, after posting this initial report (don't wanna loose it as
  collateral damage). Even if it is, I suspect some nasty race condition
  that could occur any time, but is helped by the scheduling schism
  introduced by JACK.

  ProblemType: Bug
  DistroRelease: Ubuntu 10.10
  Package: gnome-power-manager 2.32.0-0ubuntu1
  ProcVersionSignature: Ubuntu 2.6.35-22.35-generic 2.6.35.4
  Uname: Linux 2.6.35-22-generic i686
  Architecture: i386
  Date: Sun Oct 24 09:43:17 2010
  GnomeSessionIdleInhibited: No
  GnomeSessionInhibitors: None
  GnomeSessionSuspendInhibited: No
  MachineType: MICRO-STAR INTERNATIONAL CO., LTD U90/U100
  ProcCmdLine: root=UUID=02bb04e6-69d6-4bd4-af6f-cf507b0a0d2d ro quiet splash
  ProcEnviron:
   LANG=de_DE.utf8
   SHELL=/bin/bash
  SourcePackage: gnome-power-manager
  dmi.bios.date: 12/01/2009
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 4.6.3
  dmi.board.asset.tag: To be filled by O.E.M.
  dmi.board.name: U90/U100
  dmi.board.vendor: MICRO-STAR INTERNATIONAL CO., LTD
  dmi.board.version: Ver.001
  dmi.chassis.asset.tag: To Be Filled By O.E.M.
  dmi.chassis.type: 10
  dmi.chassis.vendor: MICRO-STAR INTERNATIONAL CO., LTD
  dmi.chassis.version: Ver.001
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr4.6.3:bd12/01/2009:svnMICRO-STARINTERNATIONALCO.,LTD:pnU90/U100:pvrVer.001:rvnMICRO-STARINTERNATIONALCO.,LTD:rnU90/U100:rvrVer.001:cvnMICRO-STARINTERNATIONALCO.,LTD:ct10:cvrVer.001:
  dmi.product.name: U90/U100
  dmi.product.version: Ver.001
  dmi.sys.vendor: MICRO-STAR INTERNATIONAL CO., LTD

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