Re: Dell XPS 13 Fn key bug?

On Thu, Feb 02, 2017 at 05:15:02PM +0000, thus spake Mario.Limonciello@dell.com:

quoted

-----Original Message-----
From: Ignacy Gawędzki [mailto:bugs@qult.net]
Sent: Thursday, February 2, 2017 11:08 AM
To: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Cc: Limonciello, Mario <redacted>; linux-
input@vger.kernel.org
Subject: Re: Dell XPS 13 Fn key bug?

On Thu, Feb 02, 2017 at 08:47:48AM -0800, thus spake Dmitry Torokhov:

quoted

On Thu, Feb 02, 2017 at 09:40:33AM +0100, Ignacy Gawędzki wrote:

quoted

On Wed, Feb 01, 2017 at 04:16:13PM -0800, thus spake Dmitry Torokhov:

quoted

OK, so 'cd' is scancode for KEY_RIGHT and 'cf' is scancode for
KEY_END, and it seems that implementation of FN handling is very
naive as it emits "release" keycodes for the state FN is currently
in, not the state it was when key was pressed.

Ideally Dell would fix that. Mario, any chance of that?

I'm just wondering whether this is still something that could be
fixed or worked around in the input driver,

Well, obviously I'd rather fix the bug at its root rather than piling
workarounds in the driver.

Sure, but supposing that the BIOS has to be fixed, I don't expect Dell to release
a fix for a model that's about five years old.  Unless there's a good soul out
there reading this and able to do anything about it.

There hasn't been any maintenance BIOS releases for the L322X since around the
end of 2013.
I won't be able to get anyone to spin up resources on this unless it
was a major security vulnerability or proverbial kitten killer type
of bug.

Yeah well, obviously it's not the former.  As for the latter, the
qualification is very subjective.  It's very annoying when it happens,
but I must admit I can sort of live with it (I already have for all
these years).  It's just a pity such a lame thing hasn't shown up
before production, supposing it is actually something that can be
fixed with a BIOS patch (a question which hasn't been answered yet).
Anyway, God certainly kills a kitten every time my auto-repeat gets
stuck. :/

-- 
To err is human, to purr feline.