Bug 25235

Summary:	OS Hungs up when using with a Battery of Laptop PC(Dynabook 2520JA).
Product:	Base System	Reporter:	is92518 <is92518>
Component:	kern	Assignee:	freebsd-bugs (Nobody) <bugs>
Status:	Closed FIXED
Severity:	Affects Only Me
Priority:	Normal
Version:	4.2-STABLE
Hardware:	Any
OS:	Any

Description is92518 2001-02-20 18:40:01 UTC

Whole system hungs up(symptons are such...no reaction to mouse moving and keybord typing,and no displaying of a screen) when running the machine with its battery on the kernel including ata(4) which is standard at 4.x-Releases and after.
I made sure this on "TOSHIBA Dynabook Satellite 2520CDSA".
It seems that if "CPU Sleep MODE(Battery setting of the machine's BIOS)" is Enabled,ata(4) doesn't work correctly.

Fix: 

I found 2 solutions following...
1.
At BIOS setting,set "Battery Save Mode" to "User Setting" and Disables "CPU Sleep Mode".

2.
Use wdc(4) instead of ata(4).
!!Notice!!: wdc(4) doesn't exist at 5.x and after.
How-To-Repeat: Enables "CPU Sleep MODE" at BIOS setting,and make the machine to work with its battery.

Comment 1 iedowse freebsd_committer

2001-11-19 01:57:05 UTC

State Changed
From-To: open->feedback


Does this still occur with a more recent stable?

Comment 2 iedowse 2002-01-13 18:09:55 UTC

Adding a message I forgot about to the audit trail.

In message <20011121222630G.is92518@e.cc.titech.ac.jp>, Yanagisawa Yoshisato wr
ites:
>
>I am sorry to write to you late.
>Well,It seems that the probrem occurs yet at 
>the RELENG_4 stable of Nov. 21th.
>System halt when boot without pluging in it's code to outlet.
>
>-------------------------------------------------
>Yoshisato YANAGISAWA<is92518@e.cc.titech.ac.jp>
>Dept. of Information Science.Tokyo Insitute of Technology.
>-------------------------------------------------
>
>To Unsubscribe: send mail to majordomo@FreeBSD.org
>with "unsubscribe freebsd-bugs" in the body of the message

Comment 3 Ceri Davies freebsd_committer

2002-08-29 21:43:19 UTC

State Changed
From-To: feedback->closed

Feedback timeout.