black screen after leaving bootloader

Bug #1659886 reported by Karl-Philipp Richter on 2017-01-27
This bug affects 1 person
Affects Status Importance Assigned to Milestone
xserver-xorg-video-nouveau (Ubuntu)

Bug Description

After booting Ubuntu 16.04.1 on an iMac G4 PowerMac6,1 the screen turns white and then black. `sudo service lightdm restart` or `sudo service gdm restart` doesn't help. I have to type the password to decrypt the root filesystem blindly.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: xserver-xorg-video-nouveau 1:1.0.12-1build2
ProcVersionSignature: Ubuntu 4.4.0-59.80-powerpc-smp 4.4.35
Uname: Linux 4.4.0-59-powerpc-smp ppc

ApportVersion: 2.20.1-0ubuntu2.5
Architecture: powerpc
CompizPlugins: »/apps/compiz-1/general/screen0/options/active_plugins« wurde kein Wert zugewiesen
CompositorRunning: None
Date: Fri Jan 27 17:08:14 2017
DistUpgraded: 2017-01-27 09:46:00,656 DEBUG Running PostInstallScript: './'
DistroCodename: xenial
DistroVariant: ubuntu
ExtraDebuggingInterest: Yes, including running git bisection searches
GraphicsCard: NVIDIA Corporation NV11 [GeForce2 MX/MX 400] [10de:0110] (rev b2) (prog-if 00 [VGA controller])
 Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
 Bus 001 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
 PATH=(custom, no user)
ProcKernelCmdLine: root=/dev/mapper/hostname--vg-root ro quiet splash
SourcePackage: xserver-xorg-video-nouveau
UpgradeStatus: Upgraded to xenial on 2017-01-27 (0 days ago)
version.compiz: compiz 1:
version.libdrm2: libdrm2 2.4.67-1ubuntu0.16.04.2
version.libgl1-mesa-dri: libgl1-mesa-dri 11.2.0-1ubuntu2.2
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 11.2.0-1ubuntu2.2
version.xserver-xorg-core: xserver-xorg-core 2:1.18.4-0ubuntu0.2
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 N/A
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.12-1build2
xserver.bootTime: Thu Jan 26 19:27:58 2017
xserver.configfile: default
 input PMU KEYBOARD, id 6
 input Macintosh mouse button emulation MOUSE, id 7
 input Mouseemu virtual keyboard KEYBOARD, id 8
 input Mouseemu virtual mouse MOUSE, id 9
 Failed to load module "nvidia" (module does not exist, 0)
 Failed to load module "modesetting" (module does not exist, 0)
 Failed to load module "nvidia" (module does not exist, 0)
 Failed to load module "modesetting" (module does not exist, 0)
xserver.logfile: /var/log/Xorg.0.log
xserver.version: 2:1.15.1-0ubuntu2.7
xserver.video_driver: nouveau

This issue is fixed in 16.10 where the screen is turned on with black background and shows a blurry cursor. Since support for powerpc has been dropped from 17.04 on and will be continued for updates in 16.04 only, it doesn't make sense to pursue this issue any further.

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