Bug 8235

Summary:	BUG lapic: Can't boot on battery
Product:	Timers	Reporter:	Stefan Prechtel (stefan.prechtel)
Component:	Other	Assignee:	Thomas Gleixner (tglx)
Status:	RESOLVED PATCH_ALREADY_AVAILABLE
Severity:	normal	CC:	tglx
Priority:	P2
Hardware:	i386
OS:	Linux
Kernel Version:	2.6.21-rc{1,2,3,4}	Subsystem:
Regression:	---	Bisected commit-id:
Attachments:	Boot with ac plugged in + lapic Boot with ac plugged in + nolapic Boot on battery + lapic Boot on battery + nolapic .config Bootlog 2.6.20.3: on ac + lapic Bootlog 2.6.20.3: on battery + lapic dmesg from 2.6.20 on battery with WARN_ON_ONCE patch dmidecode dmidecode Bootlog 2.6.21-rc4-git5 + "nolapic_timer" on AC Bootlog 2.6.21-rc4-git5 + "nolapic_timer" on Battery Bootlog when on AC (after Andi Kleen's patch) Bootlog when on battery (after Andi Kleen's patch)

Description Stefan Prechtel 2007-03-19 11:39:12 UTC

Most recent kernel where this bug did *NOT* occur:
Distribution:
Hardware Environment:
Software Environment:
Problem Description:
Kernel-boot hangs on battery. When pluggin in ac, system starts normal.

Steps to reproduce:
Boot without ac plugged in.

Comment 1 Stefan Prechtel 2007-03-19 11:41:13 UTC

Created attachment 10840 [details]
Boot with ac plugged in + lapic

Comment 2 Stefan Prechtel 2007-03-19 11:42:09 UTC

Created attachment 10841 [details]
Boot with ac plugged in + nolapic

Comment 3 Stefan Prechtel 2007-03-19 11:46:49 UTC

Created attachment 10842 [details]
Boot on battery + lapic

System hangs first at "[    0.273000] NET: Registered protocol family 2";
pressing a button the start goes on. 
Second hang at "[    0.838000] scsi1 : sata_sil";
Here I plugged shortly ac-cable in and removed it again.

Comment 4 Stefan Prechtel 2007-03-19 11:47:18 UTC

Created attachment 10843 [details]
Boot on battery + nolapic

Comment 5 Stefan Prechtel 2007-03-19 11:49:04 UTC

Created attachment 10844 [details]
.config

Comment 6 john stultz 2007-03-19 11:52:30 UTC

Does booting w/ clocksource=acpi_pm avoid the problem?

Comment 7 Thomas Gleixner 2007-03-19 12:29:26 UTC

Further discussion on LKML

http://lkml.org/lkml/2007/3/19/200

Comment 8 Stefan Prechtel 2007-03-19 14:54:37 UTC

Created attachment 10849 [details]
Bootlog 2.6.20.3: on ac + lapic

Comment 9 Stefan Prechtel 2007-03-19 14:55:15 UTC

Created attachment 10850 [details]
Bootlog 2.6.20.3: on battery + lapic

Comment 10 Grzegorz Chwesewicz 2007-03-20 09:50:48 UTC

Created attachment 10873 [details]
dmesg from 2.6.20 on battery with WARN_ON_ONCE patch

Comment 11 Stefan Prechtel 2007-03-21 05:38:20 UTC

Created attachment 10889 [details]
dmidecode

Comment 12 Stefan Prechtel 2007-03-21 05:53:09 UTC

Created attachment 10890 [details]
dmidecode

patched kernel (2.6.21-rc4-git5 + "nolapic_timer")

Comment 13 Stefan Prechtel 2007-03-21 05:54:50 UTC

Created attachment 10891 [details]
Bootlog 2.6.21-rc4-git5 + "nolapic_timer" on AC

Comment 14 Stefan Prechtel 2007-03-21 05:55:30 UTC

Created attachment 10892 [details]
Bootlog 2.6.21-rc4-git5 + "nolapic_timer" on Battery

Comment 15 Thomas Gleixner 2007-03-21 07:40:11 UTC

Patch to disable local apic timer on the kernel command line solved the problem.
The final patch detects the known broken nx6325 via dmi quirk and disables the
local apic timer on those systems.

Comment 16 Grzegorz Chwesewicz 2007-03-21 08:16:07 UTC

Patch can be found on http://lkml.org/lkml/diff/2007/3/21/138/1

Comment 17 Grzegorz Chwesewicz 2007-03-29 14:40:07 UTC

Created attachment 10994 [details]
Bootlog when on AC (after Andi Kleen's patch)

Comment 18 Grzegorz Chwesewicz 2007-03-29 14:40:35 UTC

Created attachment 10995 [details]
Bootlog when on battery (after Andi Kleen's patch)