Hi Andera,

On Tue, Jan 19, 2016 at 02:34:26PM +0100, Andrea wrote:

[1.] i've a problem with keyboard of my notebook HP Pavilion 15
ab062nl; CTRL SHIFT and ALT buttons not works as they should. in
particular, it is as if these keys are pressed and released alone.
isn't an hardware problem, because on windows 10 and windows 8.1 i
haven't these problems, is only a linux problem (all distro).

[2.] the bug is always active, every time i start a linux Distro
(also from live, and also without DE/WM) i've this problem with
keyboard, the only way to fix temporarily the bug, is pressing the
only Left SHIFT key for some seconds, then all problems disappear
indefinitely, and in any case, if i shutdown or if i reboot the PC,
the problem recurs.
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1532746

Hmm, this is weird. Do you observe the same issue in text console (not
in X)? It would be nice to see events as emitted by the kernel - you can
use evtest utility for that.

Is sounds like some accessibility feature, is there anything in BIOS to
that effect?

Thanks.

-- 
Dmitry