[xorg-edgers] after installation of nvidia-346 the screen is turned off at start of display manager (lightdm, gdm, kdm and xdm)

[Karl-Philipp Richter]

The hotkey for turning the screen on and off no longer shows any reaction. Changing the tty with <kbd>Strg</kbd>+<kbd>Alt</kbd>+<kbd>F2</kbd> works.

ProblemType: Bug
DistroRelease: Ubuntu 14.10
Package: xorg 1:7.7+7ubuntu2
Uname: Linux 3.18.1-031801-generic x86_64
.tmp.unity.support.test.0:

ApportVersion: 2.14.7-0ubuntu8
Architecture: amd64
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: compiz
CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
CompositorUnredirectFSW: true
CurrentDesktop: Unity
CurrentDmesg: Error: command ['sh', '-c', 'dmesg | comm -13 --nocheck-order /var/log/dmesg -'] failed with exit code 1: comm: /var/log/dmesg: Permission denied
Date: Thu Dec 25 23:16:40 2014
DistUpgraded: Fresh install
DistroCodename: utopic
DistroVariant: ubuntu
GraphicsCard:
 Intel Corporation 3rd Gen Core processor Graphics Controller [8086:0166] (rev 09) (prog-if 00 [VGA controller])
   Subsystem: Lenovo Device [17aa:3904]
MachineType: LENOVO 20221
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.18.1-031801-generic root=UUID=27047ee0-b60c-4dc6-8c14-f416b264f331 ro
SourcePackage: xorg
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 07/12/2013
dmi.bios.vendor: LENOVO
dmi.bios.version: 71CN51WW(V1.21)
dmi.board.asset.tag: No Asset Tag
dmi.board.name: INVALID
dmi.board.vendor: LENOVO
dmi.board.version: 31900003WIN8 STD MLT
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Lenovo IdeaPad Z500 Touch
dmi.modalias: dmi:bvnLENOVO:bvr71CN51WW(V1.21):bd07/12/2013:svnLENOVO:pn20221:pvrLenovoIdeaPadZ500Touch:rvnLENOVO:rnINVALID:rvr31900003WIN8STDMLT:cvnLENOVO:ct10:cvrLenovoIdeaPadZ500Touch:
dmi.product.name: 20221
dmi.product.version: Lenovo IdeaPad Z500 Touch
dmi.sys.vendor: LENOVO
version.compiz: compiz 1:0.9.12+14.10.20140918-0ubuntu1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.58+git20141201.f99522e6-0ubuntu0ricotz
version.libgl1-mesa-dri: libgl1-mesa-dri 10.5.0~git20141210.47aaabda-0ubuntu0ricotz~utopic
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 10.5.0~git20141210.47aaabda-0ubuntu0ricotz~utopic
version.xserver-xorg-core: xserver-xorg-core 2:1.16.1.901-1ubuntu1~utopic1
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.9.0-1ubuntu2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.4.99+git20140806.fbf575cb-0ubuntu0sarvatt3
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.916+git20141215.99537089-0ubuntu0sarvatt~utopic
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.11+git20141030.3fb97d78-0ubuntu0sarvatt
xserver.bootTime: Thu Dec 25 23:15:43 2014
xserver.configfile: default
xserver.errors:

xserver.logfile: /var/log/Xorg.0.log
xserver.outputs:
 product id 5557
 vendor CMN
xserver.version: 2:1.16.1.901-1ubuntu1~utopic1

[Launchpad Janitor (janitor)]

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

[benoit (vinot-benoit)]

I have the same problem on Ubuntu 14.04 since 27/01/2015. nvidia-346 was installed and worked perfectly but now, for an unknown reason, the screen is turned off when lightdm starts. Nevertheless I can hear the lightdm start sound. I have installed the nvidia-current (nvidia-304) package. So now, my computer uses its intel graphic card instead of its nvidia graphic card. When I try to switch to the nvidia card with nvidia-prime, it fails... I have tried to install newer versions of the nvidia driver (nvidia-331 and then nvidia-340) but it does not change anything.

[Karl-Philipp Richter (krichter722)]

discussion about the same issue: https://devtalk.nvidia.com/default/topic/807721/346-35-valid-display-device-s-none-860m/?offset=2

[Karl-Philipp Richter (krichter722)]

The issue no longer occurs with both `nvidia-346` 346.47-0ubuntu4 and `nvidia-349` 349.12-0ubuntu0~xedgers15.04.1 on Ubuntu 15.04-beta2 amd64 with `gdm`.