显卡切换

[Longriver]

从国外的一个论坛里找到的:

Switchable Graphics
Switching video cards works with the open source graphics driver.
You must have debugfs mounted for the switch access:
# mount -t debugfs debugfs /sys/kernel/debug
or add following to /etc/fstab:
debugfs /sys/kernel/debug debugfs 0 0
Make sure that your radeon driver is loaded:
modprobe radeon
Then you can use the following commands:
#Check current status:
cat /sys/kernel/debug/vgaswitcheroo/switch
#Enable ATI
echo DDIS > /sys/kernel/debug/vgaswitcheroo/switch
#Enable Intel
echo DIGD > /sys/kernel/debug/vgaswitcheroo/switch
#Power off unused card
echo OFF > /sys/kernel/debug/vgaswitcheroo/switch
#Power on unused card
echo ON > /sys/kernel/debug/vgaswitcheroo/switch
看不懂？看下边！

把如下内容加入到/etc/rc.conf内的HARDWARE下的末尾部分：


##############################################
#Switch Video Card
#EDITOR /etc/fstab
#ADD debugfs /sys/kernel/debug debugfs 0 0
#to make this can be work!
#Enable ATI
#echo DDIS > /sys/kernel/debug/vgaswitcheroo/switch
#Enable Intel
echo DIGD > /sys/kernel/debug/vgaswitcheroo/switch
#Power off unused card
echo OFF > /sys/kernel/debug/vgaswitcheroo/switch
#Power on unused card
#echo ON > /sys/kernel/debug/vgaswitcheroo/switch
##############################################
当然，以上可以根据你的需要调整。

在/etc/fstab末尾加上:
debugfs /sys/kernel/debug debugfs 0 0

开机自动切换好显卡工作，省电又降温！

[qy117121]

集显路过

[YeLee]

蛋疼地用了大黄蜂。

[枫叶饭团]

bumblebee路过