Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > linux.debian.user > #175076

Re: Some function keys not working on a ThinkPad W550s

Show all headers | View raw

On Fri, 25 Nov 2016, Celejar wrote:
> applications and a few things from backports. I'm currently running
> kernel 4.7.0-0.bpo.1-amd64 from backports.

Don't.  That kernel is very broken.  Switch to the latest 4.8 kernel
available from either unstable or kernel.org, or compile the latest
4.4-longterm kernel from kernel.org.

> Some of the function keys work (e.g., Fn-F5/F6 for brightness down/up),
> but some do not (e.g., F1-F3 for volume control, and F4 for suspend
> (suspend works fine out of the box via the Xfce suspend hooks)). Any
> idea how to fix / troubleshoot this?

run xev, and check if you get X events.  If you do, you need to get xfce
to handle these X events somehow (can't help you there).

If you don't see anything in xev, use the stuff in package input-utils
to trace events in the thinkpad-acpi input device, and also on the main
keyboard input device (lsinput, input-events).  That might help.

> I saw this:
> 
> http://www.thinkwiki.org/wiki/How_to_get_special_keys_to_work

It is somewhat outdated for the newer Lenovo models and Linux kernels, I
believe.

> But the details are really not explained well - what are these masks,
> what do they mean, and where are they documented?

You should not need to mess with those.  They are either correct
out-of-the-box, or you need a newer kernel anyway for other reasons.

FWIW, they are documented in Documentation/laptops/thinkpad-acpi.txt in
the kernel source:

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/tree/Documentation/laptops/thinkpad-acpi.txt

-- 
  Henrique Holschuh

Back to linux.debian.user | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

Some function keys not working on a ThinkPad W550s Celejar <celejar@gmail.com> - 2016-11-25 21:00 +0100
  Re: Some function keys not working on a ThinkPad W550s Henrique de Moraes Holschuh <hmh@debian.org> - 2016-11-26 02:30 +0100
    bpo kernel 4.7 broken? Re: Some function keys not working on a  ThinkPad W550s Richard Hector <richard@walnut.gen.nz> - 2016-11-28 14:30 +0100
      Re: bpo kernel 4.7 broken? Re: Some function keys not working on a  ThinkPad W550s Henrique de Moraes Holschuh <hmh@debian.org> - 2016-11-28 15:40 +0100
      Re: bpo kernel 4.7 broken? Re: Some function keys not working on a ThinkPad W550s Frédéric Marchal <frederic.marchal@wowtechnology.com> - 2016-11-28 16:10 +0100
    Re: Some function keys not working on a ThinkPad W550s Celejar <celejar@gmail.com> - 2016-11-28 20:20 +0100
    Re: Some function keys not working on a ThinkPad W550s Celejar <celejar@gmail.com> - 2017-01-12 20:00 +0100

csiph-web