Comment 0 for bug 1313902

on a freshly installed trusty (kubuntu) & asus x550lb notebook, nvidia geforce gt 740m, with an elantech touchpad, when moving the pointer with touchpad, the screen suddenly freezes. additionally, when the problem occurs, the following message is logged to the syslog:

acpid: client 11187[0:0] has disconnected

switching to character mode and back after waiting a few seconds (ctrl+alt+f1, ctrl+alt_f7) makes the problem disappear and the i see in the syslog the following:

acpid: client connected from 11187[0:0]
acpid: 1 client rule loaded

if i do something during the freeze (moving the pointer, clicking etc), it happens after the switchback.

the problem may be similar to https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/1184451

release info:
Description: Ubuntu 14.04 LTS
Release: 14.04

package info:
xorg:
  Installed: 1:7.7+1ubuntu8
  Candidate: 1:7.7+1ubuntu8
  Version table:
 *** 1:7.7+1ubuntu8 0
        500 http://hu.archive.ubuntu.com/ubuntu/ trusty/main amd64 Packages
        100 /var/lib/dpkg/status

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: xorg 1:7.7+1ubuntu8
ProcVersionSignature: Ubuntu 3.13.0-24.46-generic 3.13.9
Uname: Linux 3.13.0-24-generic x86_64
NonfreeKernelModules: nvidia
.proc.driver.nvidia.gpus.0: Error: [Errno 21] Is a directory: '/proc/driver/nvidia/gpus/0'
.proc.driver.nvidia.registry: Binary: ""
.proc.driver.nvidia.version:
 NVRM version: NVIDIA UNIX x86_64 Kernel Module 331.38 Wed Jan 8 19:32:30 PST 2014
 GCC version: gcc version 4.8.2 (Ubuntu 4.8.2-19ubuntu1)
ApportVersion: 2.14.1-0ubuntu3
Architecture: amd64
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: kwin
Date: Mon Apr 28 21:48:23 2014
DistUpgraded: Fresh install
DistroCodename: trusty
DistroVariant: ubuntu
DkmsStatus:
 bbswitch, 0.7, 3.13.0-24-generic, x86_64: installed
 nvidia-331, 331.38, 3.13.0-24-generic, x86_64: installed
 vboxhost, 4.3.10, 3.13.0-24-generic, x86_64: installed
ExtraDebuggingInterest: I just need to know a workaround
GraphicsCard:
 Intel Corporation Haswell-ULT Integrated Graphics Controller [8086:0a16] (rev 09) (prog-if 00 [VGA controller])
   Subsystem: ASUSTeK Computer Inc. Device [1043:131d]
   Subsystem: ASUSTeK Computer Inc. Device [1043:131d]
InstallationDate: Installed on 2014-04-24 (4 days ago)
InstallationMedia: Kubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140416.1)
LightdmGreeterLog:
 QInotifyFileSystemWatcherEngine::addPaths: inotify_add_watch failed: No such file or directory
 QFileSystemWatcher: failed to add paths: /var/lib/lightdm/.config/ibus/bus
 Bus::open: Can not get ibus-daemon's address.
 IBusInputContext::createInputContext: no connection to ibus-daemon
 file:///usr/share/kde4/apps/lightdm-kde-greeter/themes/userbar/main.qml:135: Unable to assign [undefined] to QString usersession
LightdmGreeterLogOld:
 QInotifyFileSystemWatcherEngine::addPaths: inotify_add_watch failed: No such file or directory
 QFileSystemWatcher: failed to add paths: /var/lib/lightdm/.config/ibus/bus
 Bus::open: Can not get ibus-daemon's address.
 IBusInputContext::createInputContext: no connection to ibus-daemon
 file:///usr/share/kde4/apps/lightdm-kde-greeter/themes/userbar/main.qml:135: Unable to assign [undefined] to QString usersession
Lsusb:
 Bus 001 Device 002: ID 8087:8000 Intel Corp.
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
 Bus 003 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
 Bus 002 Device 002: ID 04f2:b40a Chicony Electronics Co., Ltd
 Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: ASUSTeK COMPUTER INC. X550LB
NvidiaBugReportLog:
 ERROR: Working directory is not writable; please cd to a directory
        where you have write permission so that the nvidia-bug-report.log.gz
        file can be written.
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.13.0-24-generic.efi.signed root=/dev/mapper/kubuntu--vg-root ro quiet splash vt.handoff=7
SourcePackage: xorg
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 07/09/2013
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: X550LB.210
dmi.board.asset.tag: ATN12345678901234567
dmi.board.name: X550LB
dmi.board.vendor: ASUSTeK COMPUTER INC.
dmi.board.version: 1.0
dmi.chassis.asset.tag: ATN12345678901234567
dmi.chassis.type: 10
dmi.chassis.vendor: ASUSTeK COMPUTER INC.
dmi.chassis.version: 1.0
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrX550LB.210:bd07/09/2013:svnASUSTeKCOMPUTERINC.:pnX550LB:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnX550LB:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0:
dmi.product.name: X550LB
dmi.product.version: 1.0
dmi.sys.vendor: ASUSTeK COMPUTER INC.
version.compiz: compiz N/A
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.52-1
version.libgl1-mesa-dri: libgl1-mesa-dri 10.1.0-4ubuntu5
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 10.1.0-4ubuntu5
version.nvidia-graphics-drivers: nvidia-graphics-drivers N/A
version.xserver-xorg-core: xserver-xorg-core 2:1.15.1-0ubuntu2
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.8.2-1ubuntu2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.3.0-1ubuntu3
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.910-0ubuntu1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau N/A
xserver.bootTime: Mon Apr 28 20:13:39 2014
xserver.configfile: /etc/X11/xorg.conf
xserver.logfile: /var/log/Xorg.0.log
xserver.version: 2:1.15.1-0ubuntu2