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From: Josh Triplett <josh@joshtriplett.org>
To: linux-input@vger.kernel.org, Jamie Lentin <jm@lentin.co.uk>
Cc: 1006251@bugs.debian.org
Subject: USB Lenovo ThinkPad Compact Keyboard has fn_lock inverted
Date: Fri, 11 Nov 2022 09:06:57 -0800	[thread overview]
Message-ID: <Y26BMXn15Kbt6a2u@localhost> (raw)

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.)

             reply	other threads:[~2022-11-11 17:07 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-11-11 17:06 Josh Triplett [this message]
2022-11-12 15:23 ` USB Lenovo ThinkPad Compact Keyboard has fn_lock inverted Jamie Lentin

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