Bug#1006251: USB Lenovo ThinkPad Compact Keyboard has fn_lock inverted
I have an external ThinkPad USB keyboard:
$ lsusb | grep -i keyboard
Bus 003 Device 022: ID 17ef:6047 Lenovo ThinkPad Compact Keyboard with TrackPoint
The Linux kernel exposes a fn_lock attribute in sysfs for this keyboard:
$ cat
sys/devices/pci0000:00/0000:00:14.0/usb3/3-5/3-5.4/3-5.4.3/3-5.4.3:1.1/0003:17EF:6047.000F/fn_lock
1
However, this attribute appears inverted for this particular keyboard:
it seems to be 1 when FnLock is *disabled* and 0 when FnLock is
*enabled*. In order to enable FnLock, I have to write 0 to this file.
(Also, separately from that, it would be nice if the kernel could handle
fn_lock toggling *internally*, rather than expecting userspace to do it.
As far as I can tell, it does handle similar things for some keyboards,
but not this one.)
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