Xorg freezes after starting gnome-do

[float]

Happens every time I start gnome-do. gnome-do window will alocate some screen space but not show and only mirror some parts of the background. Mouse can be moved, even some mouse-over events work. But clicking and typing is not registered (not even ctrl-alt-f1). Only way to fix the problem is to ssh in from outside and kill gnome-do. Then everything works fine again.

ProblemType: Bug
DistroRelease: Ubuntu 14.10
Package: xorg 1:7.7+7ubuntu2
ProcVersionSignature: Ubuntu 3.16.0-24.32-generic 3.16.4
Uname: Linux 3.16.0-24-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 331.89 Tue Jul 1 13:30:18 PDT 2014
 GCC version: gcc version 4.9.1 (Ubuntu 4.9.1-16ubuntu6)
.proc.driver.nvidia.warnings.fbdev:
 Your system is not currently configured to drive a VGA console
 on the primary VGA device. The NVIDIA Linux graphics driver
 requires the use of a text-mode VGA console. Use of other console
 drivers including, but not limited to, vesafb, may result in
 corruption and stability problems, and is not supported.
.tmp.unity.support.test.0:

ApportVersion: 2.14.7-0ubuntu8
Architecture: amd64
BootLog: * Starting userspace bootsplash utility[ OK ]
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: None
CurrentDesktop: GNOME
Date: Mon Nov 3 08:44:34 2014
DistUpgraded: 2014-10-27 14:16:53,420 DEBUG enabling apt cron job
DistroCodename: utopic
DistroVariant: ubuntu
DpkgLog:

EcryptfsInUse: Yes
ExtraDebuggingInterest: Yes, if not too technical
GpuHangFrequency: Continuously
GpuHangReproducibility: Yes, I can easily reproduce it
GpuHangStarted: Immediately after installing this version of Ubuntu
GraphicsCard:
 NVIDIA Corporation G86 [Quadro NVS 290] [10de:042f] (rev a1) (prog-if 00 [VGA controller])
   Subsystem: NVIDIA Corporation Device [10de:0492]
InstallationDate: Installed on 2013-09-16 (412 days ago)
InstallationMedia: Xubuntu 13.04 "Raring Ringtail" - Release amd64 (20130423.1)
MachineType: Hewlett-Packard HP Compaq Elite 8300 CMT
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.16.0-24-generic root=/dev/mapper/xubuntu--vg-root ro quiet splash vt.handoff=7
SourcePackage: xorg
Symptom: display
Title: Xorg freeze
UpgradeStatus: Upgraded to utopic on 2014-10-27 (6 days ago)
dmi.bios.date: 05/07/2012
dmi.bios.vendor: Hewlett-Packard
dmi.bios.version: K01 v02.05
dmi.board.asset.tag: CZC3112KV3
dmi.board.name: 3396
dmi.board.vendor: Hewlett-Packard
dmi.chassis.asset.tag: CZC3112KV3
dmi.chassis.type: 3
dmi.chassis.vendor: Hewlett-Packard
dmi.modalias: dmi:bvnHewlett-Packard:bvrK01v02.05:bd05/07/2012:svnHewlett-Packard:pnHPCompaqElite8300CMT:pvr:rvnHewlett-Packard:rn3396:rvr:cvnHewlett-Packard:ct3:cvr:
dmi.product.name: HP Compaq Elite 8300 CMT
dmi.sys.vendor: Hewlett-Packard
version.compiz: compiz 1:0.9.12+14.10.20140918-0ubuntu1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.56-1
version.libgl1-mesa-dri: libgl1-mesa-dri 10.3.0-0ubuntu3
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 10.3.0-0ubuntu3
version.nvidia-graphics-drivers: nvidia-graphics-drivers N/A
version.xserver-xorg-core: xserver-xorg-core 2:1.16.0-1ubuntu1
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.9.0-1ubuntu2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.4.0-2ubuntu2
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.914-1~exp1ubuntu4
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.11-1ubuntu2
xserver.bootTime: Mon Nov 3 08:34:04 2014
xserver.configfile: /etc/xorg.conf
xserver.errors:

xserver.logfile: /var/log/Xorg.0.log
xserver.outputs:

xserver.version: 2:1.16.0-1ubuntu1

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Paul V. Stodghill (paul-stodghill)]

I have a number of machines running 14.10 and I am only observing this bug on one of them. I'm not sure what's different about the one machine. I have not found a work-around.

[Jan (jankanis)]

I have the same problem. For me it started after I upgraded to Xubuntu 14.10 (from 13.10). However, it only happens when I create a new user that has a fresh gnome-do configuration. For my existing user gnome-do still works fine.

I tried removing and purgin the gnome-do-plugins package but that didn't help. Some exceptions and backtraces that first appeared did not anymore, but instead a lot of Glib error messages were printed and the mouse buttons were still disabled like before.

[Jan (jankanis)]

By the way, another workaround to kill gnome-do is: press ctrl+alt+f1, log in in the text terminal by typing your username and password when prompted, run "pkill gnome-do", press ctrl+f7

[Jan (jankanis)]

I tried copying over the entire ~/.local/share/gnome-do folder from my existing account where gnome-do works fine to a new account, but that does not fix the problem, so the problem is not (only) a config setting in gnome-do.

[davidg (davidg2603)]

Seeing the same problem in Ubuntu 14.04.1 LTS.

Interestingly, the problem doesn't appear if I start gnome-do under strace:

    strace -f gnome-do

Attaching strace to an already-hung gnome-do session doesn't fix it.

Running gnome-do under strace, then killing strace leaves the gnome-do session running fine:

   strace -D -f gnome-do
   sleep 10
   killall strace

Perhaps there is a race somewhere in gnome-do's startup?