On Sun, 08 Jul 2012, Alex Hung wrote: > Will it be a better idea to disable hardware mute? The hardware mute > will still send a scancode to mute the volue when thinkpad-acpi is > loaded, though the led will still not work. More specifically, a > patch that only calls with hoteky_set_mute_support(1) that works as > below: I don't mind adding that as a module paramenter and a sysfs control, but make it a multi-value integer as follows: -1: auto (right now that means don't touch it. We can change its meaning after some testing) 0 : disable hw mute 1 : enable hw mute All other values must return -EINVAL (reserved, to be implemented later). On thinkpads where no SHDA functionality is supported, do not publish the sysfs node. I can test in the T43 if it is EC-supported but not published in the DSDT, please send me the relevant acpidump of a thinkpad that implements SHDA, please. Relevant documentation patch for Documentation/laptops/thinkpad-acpi.txt is required for an Ack, of course :-) > This can solve the problems that unmute from desktop will not unmute > the hardware mute until someone including myself works out a more > comprehensive solution. Agreed. -- "One disk to rule them all, One disk to find them. One disk to bring them all and in the darkness grind them. In the Land of Redmond where the shadows lie." -- The Silicon Valley Tarot Henrique Holschuh ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ ibm-acpi-devel mailing list ibm-acpi-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/ibm-acpi-devel