Linux的好處不用講,缺點也一大堆,實在是我等懶人不太好使用的。比如我的工作筆記本T61,堅持3年用下來,因為RHEL5.x操作系統沒有集成電池充放保護模塊,電池滿的時候交流電也還在充,弄壞了2塊電池,雖然是資本家出錢不心疼,總歸不爽。朋友推薦Ubuntu下面有個tp_smapi模塊什麼的,可以像windows一樣保護電池,google一把,發現Fedora這方面居然落伍了,沒有將upstream集成進來,可惜可惜,只有麻煩點DIY了。
根據高手的指導,搞這個東東需要先使用akmods,裝好akmod-tp_smapi之後,再進行modprobe裝載smapi電池管理模塊,最後設置充電起始和終止的阈值,細節如下:
點擊這裡下載為Fedora編譯好的akmod模塊,版本低點沒關系。
解壓後使用rpm -ivh akmod-tp_smapi-0.40-1.fc11.i686.rpm安裝之,注意,這個rpm需要kernel devel的支持
調用service akmods restart,之後rpm -qa|grep smapi一下,可以看到為F14有關kernel弄好的rpm已經生成安裝了
這時候可以使用modprobe -l| grep smapi看看模塊是不是ready了,隨後modprobe tp_smapi裝載模塊試試。
於是乎,可以使用下面的指令設置充電阈值,BAT表示筆記本默認的電池(BAT1好像是BIOS電池,不用管它)
- # echo 20 > /sys/devices/platform/smapi/BAT0/start_charge_thresh
- # echo 80 > /sys/devices/platform/smapi/BAT0/stop_charge_thresh
# echo 20 > /sys/devices/platform/smapi/BAT0/start_charge_thresh
# echo 80 > /sys/devices/platform/smapi/BAT0/stop_charge_thresh
做到這裡,基本上4和5是在每次需要啟用這個功能之前必須做的,因此,不如搞個service,缺省啟動,用起來方便(/etc/init.d/tp_smapi):
- #!/bin/sh
- #
- # chkconfig: 12345 21 80
- . /etc/init.d/functions
- SMAPILOCK=/var/lock/tp_smapi_lock
- start()
- {
- echo -n $"Starting tp_smapi service: "
- /sbin/modprobe -q tp_smapi
- echo 20 > /sys/devices/platform/smapi/BAT0/start_charge_thresh
- echo 80 > /sys/devices/platform/smapi/BAT0/stop_charge_thresh
- echo
- touch $SMAPILOCK
- echo
- }
- stop()
- {
- /sbin/modprobe -r tp_smapi
- rm -f $SMAPILOCK
- }
- status()
- {
- status=0
- if [ -f $SMAPILOCK ]; then
- echo "RUNNING"
- else
- echo "UNUSED"
- status=1
- fi
- return $status
- }
- case "$1" in
- start)
- start
- ;;
- stop)
- stop
- ;;
- restart)
- stop
- start
- ;;
- status)
- status
- exit $?
- ;;
- *)
- echo "Usage: $0 {start|stop|status|restart}"
- exit 1
- ;;
- esac
#!/bin/sh
#
# chkconfig: 12345 21 80
. /etc/init.d/functions
SMAPILOCK=/var/lock/tp_smapi_lock
start()
{
echo -n $"Starting tp_smapi service: "
/sbin/modprobe -q tp_smapi
echo 20 > /sys/devices/platform/smapi/BAT0/start_charge_thresh
echo 80 > /sys/devices/platform/smapi/BAT0/stop_charge_thresh
echo
touch $SMAPILOCK
echo
}
stop()
{
/sbin/modprobe -r tp_smapi
rm -f $SMAPILOCK
}
status()
{
status=0
if [ -f $SMAPILOCK ]; then
echo "RUNNING"
else
echo "UNUSED"
status=1
fi
return $status
}
case "$1" in
start)
start
;;
stop)
stop
;;
restart)
stop
start
;;
status)
status
exit $?
;;
*)
echo "Usage: $0 {start|stop|status|restart}"
exit 1
;;
esac
每一次F14升級內核後,有關的akmod都要重新弄,偷懶寫個腳本解決吧
- #!/bin/sh
-
- echo 'looking for old rpms ...'
-
- for rpm in `sudo rpm -qa| grep smapi`
- do
- echo undeploying $rpm ...
- sudo rpm -e $rpm
- done
-
- echo 'installing akmod ...'
- sudo rpm -ivh akmod-tp_smapi-0.40-1.fc11.i686.rpm
- sudo /usr/sbin/akmods --force
- sudo service akmods restart
-
- echo 'mod status:'
- sudo modprobe -l | grep smapi
-
- echo 'set battery thresholds ...'
- sudo service tp_smapi restart
-
- echo 'done.'