On Sun, 25 Apr 2010, Jerone Young wrote: > On Sun, 2010-04-25 at 19:44 +0100, Matthew Garrett wrote: > > On Sun, Apr 25, 2010 at 01:28:11PM -0500, Jerone Young wrote: > > > I think it's not really possible to get it correct with thinkpad-acpi . > > > The reason is the userspace sound server. In our case it's pulse audio. > > > So we are no longer just dealing with ALSA anymore. So if the OS gets a > > > proper hotkey event it is able to mute at the pulse audio level then, > > > pulse audio does work at the ALSA level (toggling the mixer). > > > thinkpad-acpi has no way to check on the status of pulse audio. > > > > This really isn't a problem. We have a mixer device for the Thinkpad's > > own mixer, and we can send ALSA events to indicate that its state has > > changed. > > I think it is. Since pulse audio only pay attention to the Master mixer > of the primary card. The Thinkpad EC shows up basically as a second > audio card. Fix userspace, don't break the kernel. It is taking more than two years to fix the last such "shortcut" (brightness control keys misused as notifications) taken because of userspace shortcomings. > I think all this work isn't going to help the situation any. There > appears to be a easy solution. Just a matter of getting the LEDs on some > to light correctly, and see when the hardware mute is enabled. It is a matter of keeping the hardware state and software states in sync. Looking at it in any other way will result in gross, fragile hacks. -- "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 -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
