[coreboot] mute button on X200

Sat Aug 22 14:41:10 CET 2015

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On 22/08/15 13:48, Idwer Vollering wrote:
> 2015-08-22 11:04 GMT+02:00 Francis Rowe <info at gluglug.org.uk>: Any
> ideas?
> 
>> Boot into vendor BIOS/EFI thing, install and start acpi_listen,
>> then press the mute button. 
>> http://linux.die.net/man/8/acpi_listen
> 

I tried that just now. I don't see any events in acpi_listen, when I
use the mute button. I do see events for the up/down volume buttons.

The mute button does work (only in factory BIOS), but I don't see any
events in the OS. The volume in gnome isn't shown muted, either. I
think the mute button might be hardware based, while the volume
buttons are software (ACPI).

On 22/08/15 14:09, Alexander Couzens wrote:> On Sat, 22 Aug 2015
> and take a look on "Interaction with the Embedded Controller" at
> https://wiki.ubuntu.com/Kernel/Reference/ACPITricksAndTips
> 
> you want to know which _QXX function is called. maybe that one is
empty in the coreboot aml for h8s..

Thanks, I'll take a look. It doesn't seem like the mute button is
controlled by ACPI, though.

Perhaps I could use ectool (and other utils?) to see what happens when
muting.