Bug 113541

Summary:	/proc/sys/vm/laptop_mode not changed while running in powersave mode
Product:	[openSUSE] SUSE LINUX 10.0	Reporter:	Andreas Jaeger <aj>
Component:	Mobile Devices	Assignee:	Holger Macht <hmacht>
Status:	RESOLVED WONTFIX	QA Contact:	E-mail List <qa-bugs>
Severity:	Normal
Priority:	P5 - None	CC:	behlert
Version:	Beta 3
Target Milestone:	---
Hardware:	Other
OS:	All
Whiteboard:
Found By:	Other	Services Priority:
Business Priority:		Blocker:	---
Marketing QA Status:	---	IT Deployment:	---

Description Andreas Jaeger 2005-08-27 14:03:47 UTC

aj@x40:~> cat /proc/sys/vm/laptop_mode
0
aj@x40:~> powersave -a
ONLINE
aj@x40:~> powersave -a
OFFLINE
aj@x40:~> cat /proc/sys/vm/laptop_mode
0
powersave -x
Acoustic
Performance     AC_default_scheme
Powersave       active  battery_default_scheme
Presentation

Comment 1 Holger Macht 2005-08-30 15:12:52 UTC

We do not change any harddisk settings by default anymore. You can enable this
again with YaST or in /etc/sysconfig/powersave/scheme_*
So this is usual behaviour at the moment.

Comment 2 Forgotten User ZhJd0F0L3x 2005-08-30 16:10:37 UTC

And there are reasons for this:
- we had lots of "Drive ready, seek complete" messages in the logs on drives
that did not support power management (should be fixed, we now first check
capabilities before we set the mode)
- some machines (my Dell D600) locked up hard sometimes when the drive was spun
down and a disk access took place. I don't remember the bug #, axboe voted for a
hardware bug ;-) but we decided to be better safe than sorry.

Comment 3 Andreas Jaeger 2005-08-30 18:59:59 UTC

Holger, which variable do I have to change?  Do you mean DISK_STANDBY_MODE?
It is not clear which variable changes laptop_mode

Comment 4 Forgotten User ZhJd0F0L3x 2005-08-30 19:16:29 UTC

## Path:                System/Powermanagement/Powersave/Scheme/Performance
## Type:                list(performance,powersave,aggressiv_powersave,off)
## Default:             "off"
#
# Activates the Advanded Power Management function 
# of your IDE-disks, SCSI disks will be omitted.
# Setting this to "off" will skip this setting.
# 
DISK_STANDBY_MODE="powersave"


anything but "off" and "performance" will activate laptop mode (and APM of the
drive, if it supports it). Maybe i should reword the comment a little bit to
make this more clear (OTOH, i always wanted to decouple the APM settings from
the laptop-mode / remount settings)

Comment 5 Thomas Renninger 2005-08-31 10:35:56 UTC

Can we close this WONTFIX?

Comment 6 Andreas Jaeger 2005-08-31 10:46:44 UTC

yes, we can.

Comment 7 Forgotten User ZhJd0F0L3x 2005-08-31 10:49:57 UTC

aj, if you want a better configuration frontend etc, put it into the feature
document ;-)