Hello all, I always build a custom kernel from torvalds/linux.git as a training exercise, however since today a few of the special keys are not working. (As in/de-creasing and muting sound). I get the following errors after pressing one of these buttons: [ 47.976253] ACPI: \_SB_.ATKD: Unsupported event type 0x32 [ 50.846828] ACPI: \_SB_.ATKD: Unsupported event type 0x31 [ 51.209026] ACPI: \_SB_.ATKD: Unsupported event type 0x30 I also find the following messages worrying: [ 1.290958] ACPI Warning: SystemIO range 0x0000000000000428-0x000000000000042f conflicts with OpRegion 0x0000000000000400-0x000000000000047f (\PMIO) (20140214/utaddress-258) [ 1.290968] ACPI: If an ACPI driver is available for this device, you should use it instead of the native driver [ 1.290974] ACPI Warning: SystemIO range 0x0000000000000540-0x000000000000054f conflicts with OpRegion 0x0000000000000500-0x0000000000000549 (\SBGP) (20140214/utaddress-258) [ 1.290981] ACPI Warning: SystemIO range 0x0000000000000540-0x000000000000054f conflicts with OpRegion 0x0000000000000500-0x0000000000000563 (\GPIO) (20140214/utaddress-258) [ 1.290988] ACPI: If an ACPI driver is available for this device, you should use it instead of the native driver [ 1.290992] ACPI Warning: SystemIO range 0x0000000000000530-0x000000000000053f conflicts with OpRegion 0x0000000000000500-0x0000000000000549 (\SBGP) (20140214/utaddress-258) [ 1.290997] ACPI Warning: SystemIO range 0x0000000000000530-0x000000000000053f conflicts with OpRegion 0x0000000000000500-0x0000000000000563 (\GPIO) (20140214/utaddress-258) [ 1.291001] ACPI: If an ACPI driver is available for this device, you should use it instead of the native driver [ 1.291003] ACPI Warning: SystemIO range 0x0000000000000500-0x000000000000052f conflicts with OpRegion 0x0000000000000500-0x0000000000000549 (\SBGP) (20140214/utaddress-258) [ 1.291008] ACPI Warning: SystemIO range 0x0000000000000500-0x000000000000052f conflicts with OpRegion 0x0000000000000500-0x0000000000000563 (\GPIO) (20140214/utaddress-258) [ 1.291013] ACPI: If an ACPI driver is available for this device, you should use it instead of the native driver The laptop is an Asus n61j and a version where the keys did work is: 01d5f3b598b18a5035426c30801adf65822dbd0c my .config : http://pastebin.com/cwar1Hk7 the whole dmesg : http://pastebin.com/9jmhLskD Any pointers in how to fix this or if you require any more information I'm glad to listen/supply. Are there any recent commits to the ACPI system I can take a look at? Thank you! Riemer van der Zee