On Wed, 25 Aug 2010 12:17:21 +0200
Oliver Neukum <oneukum@xxxxxxx> wrote:
> Am Mittwoch, 25. August 2010, 10:54:12 schrieb Chuck Ebbert:
> > If the keyboard has been idle for a while, it's dropping the first
> > keystroke when you start to type. And booting with
> > "usbcore.autosuspend=-1" makes the keyboard not accept any input at all.
>
> Please check whether autosuspend is enabled for this device
> (/sys/$DEVICE/power/level)
>
It's very hard to figure out what directory this device listed by
lsusb matches in /sys:
Bus 002 Device 003: ID 04f2:0402 Chicony Electronics Co., Ltd
But it looks like it's /sys/bus/usb/devices/usb2/2-1/2-1.1, which
has these two subdirectories that match on vendor and ID:
/sys/bus/usb/devices/usb2/2-1/2-1.1/2-1.1:1.0/0003:04F2:0402.0001
/sys/bus/usb/devices/usb2/2-1/2-1.1/2-1.1:1.1/0003:04F2:0402.0002
On 2.6.34, /sys/bus/usb/devices/usb2/2-1/2-1.1/power/level contains
"auto" whether commit 3d61510f4ecacfe47c75c0eb51c0659dfa77fb1b is
applied or not.
On 2.6.36-rc2 it contains "on".
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