Arch Linux

Description:
laptop-mode on x86_64 doesn't set correctly the APM level for /dev/sda when plugging AC of my laptop. It can correctly set it to 1 when unplugging but not to 254 when plugging. My /etc/laptop-mode.conf is below. Note that this same configuration works on i686, and thast "sudo hdparm -B 254 /dev/sda" works correctly on both architectures.

Additional info:
* package version(s)
kernel: 2.6.36.2-1
laptop-mode-tools: 1.55-2
hdparm: 9.35-1

* config and/or log files etc.
/etc/laptop-mode/laptop-mode.conf:
[code]
ENABLE_LAPTOP_MODE_TOOLS=1
VERBOSE_OUTPUT=0
LOG_TO_SYSLOG=1
DEBUG=0

ENABLE_LAPTOP_MODE_ON_BATTERY=1
ENABLE_LAPTOP_MODE_ON_AC=1
ENABLE_LAPTOP_MODE_WHEN_LID_CLOSED=0
ENABLE_AUTO_MODULES=0

MINIMUM_BATTERY_CHARGE_PERCENT=10
DISABLE_LAPTOP_MODE_ON_CRITICAL_BATTERY_LEVEL=1

HD="/dev/[hs]d[abcdefgh]"
PARTITIONS="auto /dev/mapper/*"
ASSUME_SCSI_IS_SATA=1

LM_BATT_MAX_LOST_WORK_SECONDS=600
LM_AC_MAX_LOST_WORK_SECONDS=120
CONTROL_READAHEAD=1
LM_READAHEAD=3072
NOLM_READAHEAD=128
CONTROL_NOATIME=0
USE_RELATIME=1
CONTROL_HD_IDLE_TIMEOUT=1
LM_AC_HD_IDLE_TIMEOUT_SECONDS=20
LM_BATT_HD_IDLE_TIMEOUT_SECONDS=20
NOLM_HD_IDLE_TIMEOUT_SECONDS=7200

CONTROL_HD_POWERMGMT=1 #"auto"
BATT_HD_POWERMGMT=1
LM_AC_HD_POWERMGMT=254
NOLM_AC_HD_POWERMGMT=254

CONTROL_HD_WRITECACHE=1
NOLM_AC_HD_WRITECACHE=1
NOLM_BATT_HD_WRITECACHE=0
LM_HD_WRITECACHE=0


CONTROL_MOUNT_OPTIONS=1
LM_DIRTY_RATIO=60
NOLM_DIRTY_RATIO=40
LM_DIRTY_BACKGROUND_RATIO=1
NOLM_DIRTY_BACKGROUND_RATIO=10
DEF_UPDATE=5
DEF_XFS_AGE_BUFFER=15
DEF_XFS_SYNC_INTERVAL=30
DEF_XFS_BUFD_INTERVAL=1
DEF_MAX_AGE=30

XFS_HZ=100
LM_SECONDS_BEFORE_SYNC=2
[\code]

Steps to reproduce:
- place the laptop-mode.conf file above in the /etc/laptop-mode folder;
- start laptop-mode daemon on a x86_64 laptop plugged to AC;
- unplug and check APM status with "sudo hdparm -B /dev/sda". You should get 1;
- plug and check APM status as above. You should get 1 again instead of the desired 254.