Zhang Rui wrote: > _BQC returns a value larger than 100? > is this true on your laptop? Yes, it returns random garbage. It is completely broken. There's an if() in the ASL that disables the entire method (including no valid return value) when a certain EC SRAM register is 0. The backlight code also constantly clears this register. I suppose the EC should theoretically set it at some point, but it doesn't (at least not reliably). In any case, _BQC isn't needed here since the hardware doesn't change the screen brightness autonomously, and disabling the method as soon as it misbehaves works just fine. -- Hector Martin (hector@xxxxxxxxxxxxxx) Public Key: http://www.marcansoft.com/marcan.asc -- 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
