On Wed, Aug 14, 2013 at 2:11 PM, Alex Hung <alex.h...@canonical.com> wrote:
> We are seeing bugs that mute led is out-of-sync with OS's mute.
> Steps to duplicate:
> 1. Press mute hotkey - it generates scancode and turns on mute led
> 2. Unmute by desktop application.
>
> Expected result: System is un-muted and led is turned off
> Actual result: System, depending on models, can be muted or unmuted. The
> led is always on.
>
> One solution to the problem is to disable hardware mute. Mute hotkey will
> only generate scancode but led will not be toggled.
>
The above can be addressed by a kernel parameter during boot time.
>
> The other solution will be to develop an application or improve existing
> desktop daemons to handle the event as previously discussed, but it will
> need to have the sysfs nodes for mute/led controls.
>
>
> On Wed, Aug 14, 2013 at 1:54 PM, Matthew Garrett <
> matthew.garr...@nebula.com> wrote:
>
>> On Wed, 2013-08-14 at 13:53 +0800, Alex Hung wrote:
>> > Hi Matthew,
>> >
>> >
>> > The scenario will be to have an user-application to listen to the mute
>> > key event, compare to hardware mute against OS mute, and sync both
>> > mute. When the application is loaded, it can use this interface to
>> > enable it; when it is unloaded it can disable it.
>>
>> Is there any reason you'd want this rather than just having it generate
>> a scancode and be under userspace control?
>>
>> --
>> Matthew Garrett <matthew.garr...@nebula.com>
>>
>
>
>
> --
> Cheers,
> Alex Hung
>
--
Cheers,
Alex Hung
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