On Fri, 4 Jun 2010, Zhang Rui wrote: > I've heard that win7 prefers the ACPI wmi driver instead of ACPI video > driver for backlight control. But not sure if win7 prefers the platform > driver as well. > > Alan, > can you help me verify if the backlight control works well when you boot > w/ acpi_backlight=vendor and w/o acpi_osi="!Windwos 2009"? I don't have the laptop with me here, so this will have to wait a little. Also, I've never used the backlight control and I don't know how it works. What should I do in order to test it? Alan Stern -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html