I noticed strange behavior from my Ubuntu system. While left idle, the screensaver would shut off with no interaction with the machine. While using the machine, webpages would zoom in or out when trying to scroll, and command windows would open while typing.
Using xev, I found that these events corresponded with ALt_L, Control_L and Shift_R events, even though those buttons were not being pressed. I'm attaching a xev log, searching for _L will show the events. ((Shift_R events are, for some reason, much rarer and do not occur in the particular log I'm adding.) In many (but not all) incidents, the KeyRelease event occurs without a preceding KeyPress event. This problem starts a variable period of time after booting the machine; generally within 4 hours. Once it starts, it persists until a reboot.
Disabling the trackpad with xinput will stop the problem for several hours, but eventually something re-enables the trackpad and the problem reappears.
WORKAROUND: Use kernel parameter:
i8042.dumbkbd
Running memtest on the box generates an error when one specific core runs one specific test, but I cannot rule out that being related to memtest's problems with UEFI systems. (See passmark.com/forum/showthread.php?5638 for info on my memtest results and the UEFI issues.) I returned the machine to HP for service. They replaced the keyboard, trackpad and memory. This did not resolve the problem.
I've recreated the problem in UbuntuMate, Ubuntu, and Debian, on both 3.x and 4.x kernels. I cannot reliably reproduce the issue on the Windows partition on the same box; I think I might have seen it once or twice while working on the machine, but can't rule out accidental keypresses by me at those times. Leaving a keylogger running for over 24 hours on the Windows partition did not show any unexpected keyboard events.
ProblemType: Bug
DistroRelease: Ubuntu 15.04
Package: xorg 1:7.7+7ubuntu4
ProcVersionSignature: Ubuntu 3.19.0-43.49-generic 3.19.8-ckt10
Uname: Linux 3.19.0-43-generic x86_64
NonfreeKernelModules: fglrx
ApportVersion: 2.17.2-0ubuntu1.8
Architecture: amd64
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: None
CurrentDesktop: MATE
Date: Fri Jan 22 21:36:14 2016
DistUpgraded: Fresh install
DistroCodename: vivid
DistroVariant: ubuntu
DkmsStatus:
fglrx-core, 15.200, 3.19.0-32-generic, x86_64: installed
fglrx-core, 15.200, 3.19.0-33-generic, x86_64: installed
fglrx-core, 15.200, 3.19.0-42-generic, x86_64: installed
fglrx-core, 15.200, 3.19.0-43-generic, x86_64: installed
ExtraDebuggingInterest: Yes
GraphicsCard:
Advanced Micro Devices, Inc. [AMD/ATI] Device [1002:9874] (rev c5) (prog-if 00 [VGA controller])
Subsystem: Hewlett-Packard Company Device [103c:80af]
InstallationDate: Installed on 2015-10-30 (84 days ago)
InstallationMedia: Ubuntu-MATE 15.04 "Vivid Vervet" - Release amd64 (20150422.1)
LightdmGreeterLog:
** (lightdm-gtk-greeter:938): WARNING **: [PIDs] Failed to execute command: upstart
** (lightdm-gtk-greeter:938): WARNING **: Failed to load user image: Failed to open file '/home/jbhelfrich/.face': No such file or directory
LightdmGreeterLogOld:
** (lightdm-gtk-greeter:1191): WARNING **: [PIDs] Failed to execute command: upstart
** (lightdm-gtk-greeter:1191): WARNING **: Failed to load user image: Failed to open file '/home/jbhelfrich/.face': No such file or directory
MachineType: HP HP Pavilion Notebook
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-43-generic.efi.signed root=UUID=613f6223-b665-4289-9dfa-7b003124dfdf ro quiet splash vt.handoff=7
SourcePackage: xorg
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: 80AF
dmi.board.vendor: HP
dmi.board.version: 81.28
dmi.chassis.type: 10
dmi.chassis.vendor: HP
dmi.chassis.version: Chassis Version
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrF.13:bd08/06/2015:svnHP:pnHPPavilionNotebook:pvr:rvnHP:rn80AF:rvr81.28:cvnHP:ct10:cvrChassisVersion:
dmi.product.name: HP Pavilion Notebook
dmi.sys.vendor: HP
version.compiz: compiz 1:0.9.12.1+15.04.20150922-0ubuntu1
version.fglrx-installer: fglrx-installer N/A
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.60-2
version.libgl1-mesa-dri: libgl1-mesa-dri 10.5.9-2ubuntu1~vivid2
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 10.5.9-2ubuntu1~vivid2
version.xserver-xorg-core: xserver-xorg-core 2:1.17.1-0ubuntu3.1
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.9.0-1ubuntu2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.5.0-1ubuntu2
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917-1~exp1ubuntu2.3
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.11-1ubuntu2build1
xserver.bootTime: Thu Jan 21 21:59:36 2016
xserver.configfile: default
xserver.errors:
open /dev/dri/card0: No such file or directory
fglrx(0): XMM failed to initialize
AIGLX error: failed to open /usr/X11R6/lib64/modules/dri/fglrx_dri.so, error[/usr/X11R6/lib64/modules/dri/fglrx_dri.so: cannot open shared object file: No such file or directory]
AIGLX error: failed to open /usr/lib64/dri/fglrx_dri.so, error[/usr/lib64/dri/fglrx_dri.so: cannot open shared object file: No such file or directory]
AIGLX error: failed to open /usr/X11R6/lib/modules/dri/fglrx_dri.so, error[/usr/X11R6/lib/modules/dri/fglrx_dri.so: cannot open shared object file: No such file or directory]
xserver.logfile: /var/log/Xorg.0.log
xserver.version: 2:1.17.1-0ubuntu3.1
xserver.video_driver: fglrx
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