Intel GMA500 Stub Driver

modulename: poulsbo.ko

configname: CONFIG_STUB_POULSBO

Linux Kernel Configuration
└─>Device Drivers
└─>Graphics support
└─>Intel GMA500 Stub Driver
In linux kernel since version 2.6.37 (release Date: 2011-01-04)  
Choose this option if you have a system that has Intel GMA500
(Poulsbo) integrated graphics. If M is selected, the module will
be called Poulsbo. This driver is a stub driver for Poulsbo that
will call poulsbo.ko to enable the acpi backlight control sysfs
entry file because there have no poulsbo native driver can support
intel opregion.

source code: