Public bug reported:

I've a problem with the keyboard of notebook HP Pavilion 15 ab062nl.
the problem is with SHIFT ALT and CTRL buttons of the keyboard.

for example when i use ALT-TAB shortcut, after few seconds, the ALT-TAB menu 
disappear as if i release ALT key, but isn't so.
another example is when i navigate on web, when i scroll page with mouse wheel, 
sometimes the page start to resize, as if i'm pressing CTRL command while 
scroll, or if i'm writing a text, sometimes, borwser launch shortcut, as if i'm 
pressing CTRL while i type text, for exaple if i'm typing "b" letter, opens 
bookmarks...

another example is while i'm typing text, if i press SHIFT key and start
typing, begins to write uppercase letters and after a while, writes
lowercase like I released shift, but i'm still pressing shift.

for example if i press SHIFT+s, the result is this:
SSSSSSSSSSSSSSsssssssssssssssssssssssssssssssss
some letters are uppercase, but others are lowercase.

i haven't found a solution.
the only way to solve momentarily the problem, is pressing for some seconds the 
only SHIFT key, after that, the problems disappears indefinitely, or until the 
next restart.

This problem occurs with all ubuntu version (x86 and x86_64), now i'm
using Ubuntu 15.10, but i've also tried ubuntu 15.04, ubuntu 14.04,
ubuntu 12.04, ubuntu 10.04.

furthermore i've this problem also with other GNU/Linux Distributions (i've 
tried Fedora, OpenSuse, ArchLinux, Antergos, Debian, SteamOS).
but isn't and hardware problem, because on Windows 8.1 and Windows 10 i haven't 
these problems.

i've also tried to plug in an externa USB keyboard, and if i use
external USB keybaord i haven't problems.

i think is a problem of compatibility, with integrated keyboard of this
notebook.

i've tried to monitor these problems using XEV, and the results is that
also if i'm not using notebook, sometimes XEV reads an INPUT of one of
these 3 key (SHIFT, ALT, CTRL), and while i'm pressing one of these 3
key, XEV see also if i release and immedialty after press again the key.

this is an example of the input while i press Left_ALT key for a while

KeyPress event, serial 37, synthetic NO, window 0x3e00001,
    root 0x498, subw 0x0, time 129987, (-142,152), root:(452,476),
    state 0x10, keycode 64 (keysym 0xffe9, Alt_L), same_screen YES,
    XLookupString gives 0 bytes:
    XmbLookupString gives 0 bytes:
    XFilterEvent returns: False
 
KeyRelease event, serial 37, synthetic NO, window 0x3e00001,
    root 0x498, subw 0x0, time 130147, (-142,152), root:(452,476),
    state 0x18, keycode 64 (keysym 0xffe9, Alt_L), same_screen YES,
    XLookupString gives 0 bytes:
    XFilterEvent returns: False
 
KeyPress event, serial 37, synthetic NO, window 0x3e00001,
    root 0x498, subw 0x0, time 130391, (-142,152), root:(452,476),
    state 0x10, keycode 64 (keysym 0xffe9, Alt_L), same_screen YES,
    XLookupString gives 0 bytes:
    XmbLookupString gives 0 bytes:
    XFilterEvent returns: False
 
whole log here http://pastebin.com/CPGz40aw

and this is the output of xev, leaving the notebook on a few hours
without using it http://pastebin.com/sYSHAbGy


this is "xinput" output

⎡ Virtual core pointer                          id=2    [master pointer  (3)]
⎜   ↳ Virtual core XTEST pointer                id=4    [slave  pointer  (2)]
⎜   ↳ Logitech USB Laser Mouse                  id=11   [slave  pointer  (2)]
⎜   ↳ SynPS/2 Synaptics TouchPad                id=13   [slave  pointer  (2)]
⎣ Virtual core keyboard                         id=3    [master keyboard (2)]
    ↳ Virtual core XTEST keyboard               id=5    [slave  keyboard (3)]
    ↳ Power Button                              id=6    [slave  keyboard (3)]
    ↳ Video Bus                                 id=7    [slave  keyboard (3)]
    ↳ Video Bus                                 id=8    [slave  keyboard (3)]
    ↳ Power Button                              id=9    [slave  keyboard (3)]
    ↳ HP Truevision HD                          id=10   [slave  keyboard (3)]
    ↳ AT Translated Set 2 keyboard              id=12   [slave  keyboard (3)]
    ↳ HP WMI hotkeys                            id=14   [slave  keyboard (3)]
    ↳ HP Wireless hotkeys                       id=15   [slave  keyboard (3)]

i hope that this bug can be solved

ProblemType: Bug
DistroRelease: Ubuntu 15.10
Package: linux-image-4.2.0-16-generic 4.2.0-16.19
ProcVersionSignature: Ubuntu 4.2.0-16.19-generic 4.2.3
Uname: Linux 4.2.0-16-generic x86_64
ApportVersion: 2.19.1-0ubuntu3
Architecture: amd64
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC1:  ubuntu     1980 F.... pulseaudio
 /dev/snd/controlC0:  ubuntu     1980 F.... pulseaudio
CasperVersion: 1.365
CurrentDesktop: Unity
Date: Mon Jan 11 10:08:12 2016
LiveMediaBuild: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
MachineType: Hewlett-Packard HP Pavilion Notebook
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcFB: 0 amdgpudrmfb
ProcKernelCmdLine: BOOT_IMAGE=/casper/vmlinuz.efi 
file=/cdrom/preseed/username.seed boot=casper quiet splash ---
RelatedPackageVersions:
 linux-restricted-modules-4.2.0-16-generic N/A
 linux-backports-modules-4.2.0-16-generic  N/A
 linux-firmware                            1.149
SourcePackage: linux
UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev'
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 08/06/2015
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: F.13
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: 80B5
dmi.board.vendor: Hewlett-Packard
dmi.board.version: 81.28
dmi.chassis.type: 10
dmi.chassis.vendor: Hewlett-Packard
dmi.chassis.version: Chassis Version
dmi.modalias: 
dmi:bvnAmericanMegatrendsInc.:bvrF.13:bd08/06/2015:svnHewlett-Packard:pnHPPavilionNotebook:pvr:rvnHewlett-Packard:rn80B5:rvr81.28:cvnHewlett-Packard:ct10:cvrChassisVersion:
dmi.product.name: HP Pavilion Notebook
dmi.sys.vendor: Hewlett-Packard

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug wily

** Attachment added: "lspci-vnvn.log"
   
https://bugs.launchpad.net/bugs/1532746/+attachment/4547957/+files/lspci-vnvn.log

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Title:
  SHIFT, ALT and CTRL problem with HP pavilion 15 ab062nl

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