On Tue, Nov 30, 2010 at 09:34:13AM +0800, Zhang Rui wrote: > On Sat, 2010-11-27 at 05:10 +0800, Thadeu Lima de Souza Cascardo wrote: > > Hello, > > > > I have a notebook with an ACPI system that notifies about the pressing > > of the key for blocking touchpad. However, it does not notify it by > > itself. I was considering sending the event to userspace and let it does > > the blocking. > > > how do you know the event is sent via ACPI? > > please try "cat /proc/interrupts > interrupt-1; > grep . /sys/firmware/acpi/interrupts/* > gpe-1; sleep 5; > cat /proc/interrupts > interrupt-2; > grep . /sys/firmware/acpi/interrupts/* > gpe-2", and press the block key > during the 5 seconds sleep. > Then please attach the 4 files here to see if there are ACPI interrupts > generated by the key pressing. > > thanks, > rui I know because I've already done some investigation and have even written a driver for it. It's WMI to be more precise. After calling a WMI method, it does start notification through the PNP0C14 object, using the notify_id of a GUID. Then, I can get the key calling a query block for a third GUID. I get values for all the keys whose functions were missing. I am about to send the driver soon. It requires the fix for WMI that I've sent yesterday to work at all, since the GUIDs I use were being wrongly considerated as duplicates. Thanks for the tip, though. I'll be sure to use it to lookup the source for key presses next time. In fact, I did end up looking at *gpe* at /sys/ while doing this investigation. Now, I'm sure that's one of the first places to look up while searching for ACPI notifications. Thanks Rui. Regards, Cascardo. > > Since other keys are also notified by this same ACPI object, it's even > > more natural that I use an input device to send this to userspace. > > > > The problem is: there seems to be no event to represent this. Any > > suggestions? > > > > Best regards, > > Cascardo. > >
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