ACPI支持
FreeBSD对acpi支持不佳，但是对TinkPad支持较好，在/boot/loader.conf中添加
acpi_video_load="YES"
acpi_ibm_load="YES"
/boot/loader.conf配置
前三行是操作系统安装添加
kern.geom.label.disk_ident.enable="0"
kern.geom.label.gptid.enable="0"
zfs_load="YES"
#boot_verbose="-v" # provide more dmesg information
autoboot_delay="1" # Set wait time to 1 second
loader_logo="beastie" # The color logo of FreeBSD
cuse4bsd_load="YES"
############################
## Load necessary modules ##
############################
cpuctl_load="YES" # CPU Throttling
coretemp_load="YES" # Thermal Monitoring
#linprocfs_load="YES" # Linux proc
#linsysfs_load="YES" # Linux sysfs
acpi_ibm_load="YES" # acpi for IBM ThinkPad
acpi_video_load="YES" # ACPI Video Extensions driver
snd_hda_load="YES" # sound card, comment out if in kernel
speaker_load="YES" # console speaker device driver
#####################
### Bluetooth USB ###
#####################
#ubtbcmfw_load="YES # Firmware loader for Broadcom Bluetooth
#ng_ubt_load="YES" # Bluetooth driver
################
### Wireless ###
################
wlan_scan_ap_load="YES" # Wireless
wlan_scan_sta_load="YES" # Wireless
if_ath_load="YES" # Internal LAN module
if_ath_pci_load="YES" # For Thinkpad X61
wlan_wep_load="YES"
wlan_ccmp_load="YES"
wlan_tkip_load="YES"
####################
## SD card reader ##
####################
#sdhci_load="YES"
#mmcsd_load="YES"
#mmc_load="YES"
##########################
### End of loader.conf ###
##########################