Yes, it is with xserver-xorg-video-nouveau removed.
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https://bugs.launchpad.net/bugs/1577162
Title:
Screens briefly blacks out at lightdm prompt
Status in xorg package in Ubuntu:
Incomplete
Bug description:
When I boot my laptop and get to the lightdm login prompt, the screen
blacks out for a fraction of second. This happens each time, only
once, and does not prevent logging in.
In fact it is not only a display glitch : if I start to type my
password before the blackout, the typed characters are lost when
normal display resumes.
So lightdm might be restarting.
This is only mildly annoying, but I am also experiencing other
graphical problems which may be or not be related (namely #1568604).
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: lightdm 1.18.1-0ubuntu1
ProcVersionSignature: Ubuntu 4.4.0-22.38-generic 4.4.8
Uname: Linux 4.4.0-22-generic x86_64
NonfreeKernelModules: wl
ApportVersion: 2.20.1-0ubuntu2
Architecture: amd64
CurrentDesktop: XFCE
Date: Sun May 1 14:55:29 2016
InstallationDate: Installed on 2016-04-22 (8 days ago)
InstallationMedia: Xubuntu 16.04 LTS "Xenial Xerus" - Release amd64
(20160420.1)
SourcePackage: lightdm
UpgradeStatus: No upgrade log present (probably fresh install)
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ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
CompizPlugins: No value set for
`/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: None
CurrentDesktop: XFCE
DistUpgraded: Fresh install
DistroCodename: xenial
DistroRelease: Ubuntu 16.04
DistroVariant: ubuntu
GraphicsCard:
Intel Corporation Broadwell-U Integrated Graphics [8086:1616] (rev 09)
(prog-if 00 [VGA controller])
Subsystem: Dell Broadwell-U Integrated Graphics [1028:062e]
Subsystem: Dell GM108M [GeForce 840M] [1028:062e]
InstallationDate: Installed on 2016-04-22 (82 days ago)
InstallationMedia: Xubuntu 16.04 LTS "Xenial Xerus" - Release amd64
(20160420.1)
LightdmDisplayLog:
(II) AIGLX: Suspending AIGLX clients for VT switch
(II) AIGLX: Suspending AIGLX clients for VT switch
MachineType: Dell Inc. Latitude E7450
NonfreeKernelModules: wl
Package: xorg 1:7.7+13ubuntu3
PackageArchitecture: amd64
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-30-generic
root=UUID=479420cb-def5-46a9-907c-007c03dc04ba ro
ProcVersionSignature: Ubuntu 4.4.0-30.49-generic 4.4.13
Tags: third-party-packages xenial possible-manual-nvidia-install ubuntu
Uname: Linux 4.4.0-30-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm bumblebee cdrom dip lpadmin plugdev sambashare sudo
_MarkForUpload: True
dmi.bios.date: 05/17/2016
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A13
dmi.board.name: 0NC6G7
dmi.board.vendor: Dell Inc.
dmi.board.version: A01
dmi.chassis.type: 9
dmi.chassis.vendor: Dell Inc.
dmi.modalias:
dmi:bvnDellInc.:bvrA13:bd05/17/2016:svnDellInc.:pnLatitudeE7450:pvr:rvnDellInc.:rn0NC6G7:rvrA01:cvnDellInc.:ct9:cvr:
dmi.product.name: Latitude E7450
dmi.sys.vendor: Dell Inc.
version.compiz: compiz N/A
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.67-1ubuntu0.16.04.1
version.libgl1-mesa-dri: libgl1-mesa-dri 11.2.0-1ubuntu2
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 11.2.0-1ubuntu2
version.xserver-xorg-core: xserver-xorg-core 2:1.18.3-1ubuntu2.2
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.10.1-1ubuntu2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.7.0-1
version.xserver-xorg-video-intel: xserver-xorg-video-intel
2:2.99.917+git20160325-1ubuntu1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau
1:1.0.12-1build2
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