crash on change focus between apps in two workspaces

[Edson T. Marques]

I believe this bug is related to the video driver but I'm not sure ... Anyway there goes the report:

This is a crash that happens every time I open two different applications (for example: Chromium and Nautilus), one of them in workspace 1 and the other in workspace 2.

When I change the focus between them for some time (from 3 to 5 times), there is a crash that causes, first, the window manager (or gnome shell, I'm not sure) to reboot, then, if I insist on trying to switch between the applications for some more times, the crash seems to be more severe and ubuntu returns to the login screen (gdm3).

I'm using a dell inspiron 15 series 7000 (gaming), notebook with 2 displays (one is the display of the notebook itself and the other is an LG 23EA53, connected via HDMI and configured as a primary)

To make the focus change I use the mouse, I click on "Activities" and, with the mouse, I click on the application that appears in the workspaces pile to the right of the display, below and above, successively until the crach occurs.

Usando Alt-TAB parece, a princípio, que o crash não ocorre... or it takes longer to occur :-)

ProblemType: Bug
DistroRelease: Ubuntu 17.10
Package: xserver-xorg-video-nouveau 1:1.0.15-2
ProcVersionSignature: Ubuntu 4.12.0-13.14-generic 4.12.10
Uname: Linux 4.12.0-13-generic x86_64
ApportVersion: 2.20.7-0ubuntu1
Architecture: amd64
BootLog: /dev/sda2: clean, 465520/2293760 files, 2530420/9175040 blocks
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: None
CurrentDesktop: ubuntu:GNOME
Date: Mon Sep 11 08:43:27 2017
DistUpgraded: Fresh install
DistroCodename: artful
DistroVariant: ubuntu
ExtraDebuggingInterest: No
GraphicsCard:
 Intel Corporation Device [8086:591b] (rev 04) (prog-if 00 [VGA controller])
   Subsystem: Dell Device [1028:0798]
 NVIDIA Corporation GP107M [GeForce GTX 1050 Ti Mobile] [10de:1c8c] (rev a1) (prog-if 00 [VGA controller])
   Subsystem: Dell GP107M [GeForce GTX 1050 Ti Mobile] [1028:0798]
InstallationDate: Installed on 2017-08-12 (29 days ago)
InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Alpha amd64 (20170812)
Lsusb:
 Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
 Bus 001 Device 003: ID 0cf3:e007 Atheros Communications, Inc.
 Bus 001 Device 002: ID 413c:301d Dell Computer Corp.
 Bus 001 Device 004: ID 1bcf:2c01 Sunplus Innovation Technology Inc.
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: Dell Inc. Inspiron 15 7000 Gaming
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.12.0-13-generic.efi.signed root=UUID=dc283744-d6ae-456e-add5-b57366aabd43 ro quiet splash vt.handoff=7
SourcePackage: xserver-xorg-video-nouveau
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 05/24/2017
dmi.bios.vendor: Dell Inc.
dmi.bios.version: 01.00.07
dmi.board.name: 0P84C9
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 10
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvr01.00.07:bd05/24/2017:svnDellInc.:pnInspiron157000Gaming:pvr:rvnDellInc.:rn0P84C9:rvrA00:cvnDellInc.:ct10:cvr:
dmi.product.family: Inspiron
dmi.product.name: Inspiron 15 7000 Gaming
dmi.sys.vendor: Dell Inc.
version.compiz: compiz N/A
version.libdrm2: libdrm2 2.4.83+git20170905.d55d0804-0ubuntu0ricotz
version.libgl1-mesa-dri: libgl1-mesa-dri 17.2.0+git20170905+17.2.b4473dd5-0ubuntu0ricotz
version.libgl1-mesa-glx: libgl1-mesa-glx 17.2.0+git20170905+17.2.b4473dd5-0ubuntu0ricotz
version.xserver-xorg-core: xserver-xorg-core 2:1.19.3-1ubuntu6
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.9.0-1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20170309-0ubuntu1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.15-2

[Edson T. Marques (edsontmarques)]

I've been thinking a bit, and if this bug is related to the gnome-shell, please excuse me. I do not know if it would be convenient to repeat this same report and generate an apport with the same content for gnome-shell.

[Edson T. Marques (edsontmarques)]

Sorry for the end of message... (Usando Alt-TAB parece, a princípio, que o crash não ocorre... or it takes longer to occur :-))

This means something like:

Using Alt-TAB it seems at first that the crash does not occur ... or it takes longer to occur :-)

... thanks google translate! :-)

[Edson T. Marques (edsontmarques)]

This crash occurs when both applications are in the same workspace as well ... And if one of the applications is a virtual machine session of Virtualbox, crash occurs more quickly (with less focus shifts).

[Edson T. Marques (edsontmarques)]

This bug is simply making it impossible to use Gnome. I decided to send this bug report to the gnome-shell team as well.

#1716456

[Edson T. Marques (edsontmarques)]

I'm doing some tests but there is a possibility that the cause of these crashs is some or some gnome extensions.

I turned off the extensions:

- Native Windows Placement (https://extensions.gnome.org/extension/18/native-window-placement/)
- Auto Move Windows (https://extensions.gnome.org/extension/16/auto-move-windows/)
- Window Navigator (https://extensions.gnome.org/extension/10/windownavigator/)

... and I tried to repeat the incident but it looks like the gnome-shell has stabilized

I'm setting this bug as invalid.