You need to change the version check for setting VM sysctls as well. I suggest this patch:
--- laptop-mode-tools-1.58.orig/usr/share/laptop-mode-tools/modules/laptop-mode
+++ laptop-mode-tools-1.58/usr/share/laptop-mode-tools/modules/laptop-mode
@@ -187,21 +187,18 @@ if [ "$ACTIVATE_WITH_POSSIBLE_DATA_LOSS"
set_sysctl /proc/sys/fs/xfs/xfsbufd_centisecs 3000
fi
- case "$KLEVEL" in
- "2.4")
- log "VERBOSE" "Adjusting 2.4 kernel parameters to
enable laptop mode."
- set_sysctl /proc/sys/vm/laptop_mode 1
- set_sysctl /proc/sys/vm/bdflush "30 500 0 0 $AGE
$AGE 60 20 0"
- ;;
- "2.6")
- log "VERBOSE" "Adjusting 2.6 kernel parameters to
enable laptop mode."
- set_sysctl /proc/sys/vm/laptop_mode
"$LM_SECONDS_BEFORE_SYNC"
- set_sysctl /proc/sys/vm/dirty_writeback_centisecs "$AGE"
- set_sysctl /proc/sys/vm/dirty_expire_centisecs "$AGE"
- set_sysctl /proc/sys/vm/dirty_ratio
"$LM_DIRTY_RATIO"
- set_sysctl /proc/sys/vm/dirty_background_ratio
"$LM_DIRTY_BACKGROUND_RATIO"
- ;;
- esac
+ if [ -f /proc/sys/vm/bdflush ]; then
+ log "VERBOSE" "Adjusting 2.4 kernel parameters to enable laptop
mode."
+ set_sysctl /proc/sys/vm/laptop_mode 1
+ set_sysctl /proc/sys/vm/bdflush "30 500 0 0 $AGE $AGE 60
20 0"
+ else
+ log "VERBOSE" "Adjusting 2.6+ kernel parameters to enable
laptop mode."
+ set_sysctl /proc/sys/vm/laptop_mode
"$LM_SECONDS_BEFORE_SYNC"
+ set_sysctl /proc/sys/vm/dirty_writeback_centisecs "$AGE"
+ set_sysctl /proc/sys/vm/dirty_expire_centisecs "$AGE"
+ set_sysctl /proc/sys/vm/dirty_ratio
"$LM_DIRTY_RATIO"
+ set_sysctl /proc/sys/vm/dirty_background_ratio
"$LM_DIRTY_BACKGROUND_RATIO"
+ fi
if [ $CONTROL_MOUNT_OPTIONS -eq 1 ]; then
log "VERBOSE" "Remounting filesystems."
# The -r flag makes 'read' preserve backslashes read from
@@ -316,19 +313,16 @@ else
set_sysctl /proc/sys/fs/xfs/xfssyncd_centisecs
$((100*$DEF_XFS_SYNC_INTERVAL))
set_sysctl /proc/sys/fs/xfs/xfsbufd_centisecs
$((100*$DEF_XFS_BUFD_INTERVAL))
fi
- case "$KLEVEL" in
- "2.4")
- log "VERBOSE" "Adjusting 2.4 kernel parameters to
disable laptop mode."
- set_sysctl /proc/sys/vm/bdflush "30 500 0 0 $U_AGE
$B_AGE 60 20 0"
- ;;
- "2.6")
- log "VERBOSE" "Adjusting 2.6 kernel parameters to
disable laptop mode."
- set_sysctl /proc/sys/vm/dirty_writeback_centisecs
"$U_AGE"
- set_sysctl /proc/sys/vm/dirty_expire_centisecs
"$B_AGE"
- set_sysctl /proc/sys/vm/dirty_ratio
"$NOLM_DIRTY_RATIO"
- set_sysctl /proc/sys/vm/dirty_background_ratio
"$NOLM_DIRTY_BACKGROUND_RATIO"
- ;;
- esac
+ if [ -f /proc/sys/vm/bdflush ]; then
+ log "VERBOSE" "Adjusting 2.4 kernel parameters to disable
laptop mode."
+ set_sysctl /proc/sys/vm/bdflush "30 500 0 0 $U_AGE $B_AGE 60 20
0"
+ else
+ log "VERBOSE" "Adjusting 2.6+ kernel parameters to disable
laptop mode."
+ set_sysctl /proc/sys/vm/dirty_writeback_centisecs "$U_AGE"
+ set_sysctl /proc/sys/vm/dirty_expire_centisecs "$B_AGE"
+ set_sysctl /proc/sys/vm/dirty_ratio
"$NOLM_DIRTY_RATIO"
+ set_sysctl /proc/sys/vm/dirty_background_ratio
"$NOLM_DIRTY_BACKGROUND_RATIO"
+ fi
if [ $CONTROL_MOUNT_OPTIONS -eq 1 ] ; then
log "VERBOSE" "Remounting filesystems."
# The -r flag makes 'read' preserve backslashes read from
--- END ---
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