On Sat, 14 May 2011, Andrew Lutomirski wrote:
> I think that on Windows on everything older than X220, pressing mute
> unconditionally mutes the sound, so it's a nice way to tell the system
> "don't make noise, regardless of what current settings are."
Yay, so the thinkpads have been un-dumbeddown
On Sat, May 14, 2011 at 11:47 AM, Matthew Garrett wrote:
> On Sat, May 14, 2011 at 11:34:25AM -0400, Andy Lutomirski wrote:
>
>> It turns out that we can ask ACPI for one of three behaviors
>> directly. They are "latch" (the default), "none" (no automatic
>> control), and "toggle" (mute unmutes w
On Sat, May 14, 2011 at 11:34:25AM -0400, Andy Lutomirski wrote:
> It turns out that we can ask ACPI for one of three behaviors
> directly. They are "latch" (the default), "none" (no automatic
> control), and "toggle" (mute unmutes when muted). So we let the
> user control the mode through sysfs
ThinkPads have hardware volume controls and three buttons to control
them. (These are separate from the standard mixer.) By default,
the buttons are:
- Mute: Mutes the hardware volume control and generates KEY_MUTE.
- Up: Unmutes, generates KEY_VOLUMEUP, and increases volume if
applicable.
