Comment 0 for bug 920120

When booting off a Precise daily liveCD image, my two monitors (connected to the two DVI outputs of my Nvidia 9600GT (nv50 type) graphics card) come up nicely when the plymouth boot splash shows up, and continue to work throughout the liveCD session.

When booting the installed system, the plymouth bootsplash fails to render, showing graphical corruption instead, and the second monitor stays off. Then X loads successfully, and the second display is correctly detected, but any attempt to turn it on fails (no signal reaches the monitor), even though the system believes it's turned it on - everything works as if the monitor was on, except for the monitor actually being on.

I would think this is a problem with the initialization of the hardware, and given the point at which the liveCD/install boot processes show differences, it may have to do with the grub-kernel handover. My grub menu is displayed by default.

A note about the corrupted plymouth screen: about 2/3 of the screen is corrupted, but the bottom 1/3 becomes Ubuntu-aubergine-coloured. This could indicate that there is a wrong memory offset somewhere.

The problem happens as described on Precise (the installed version of Oneiric exhibits the same problem but I haven't checked if the Oneiric liveCD works).

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: linux-image-3.2.0-10-generic 3.2.0-10.17
ProcVersionSignature: Ubuntu 3.2.0-10.17-generic 3.2.1
Uname: Linux 3.2.0-10-generic x86_64
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
AplayDevices:
 **** List of PLAYBACK Hardware Devices ****
 card 0: M1010LT [M Audio Delta 1010LT], device 0: ICE1712 multi [ICE1712 multi]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
ApportVersion: 1.91-0ubuntu1
Architecture: amd64
ArecordDevices:
 **** List of CAPTURE Hardware Devices ****
 card 0: M1010LT [M Audio Delta 1010LT], device 0: ICE1712 multi [ICE1712 multi]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: pablo 1701 F.... pulseaudio
CRDA: Error: command ['iw', 'reg', 'get'] failed with exit code 1: nl80211 not found.
Card0.Amixer.info:
 Card hw:0 'M1010LT'/'M Audio Delta 1010LT at 0x1140, irq 20'
   Mixer name : 'ICE1712 - multitrack'
   Components : ''
   Controls : 85
   Simple ctrls : 57
Date: Sun Jan 22 18:30:48 2012
HibernationDevice: RESUME=UUID=e8f4b4c9-0fa5-4a4d-8cd7-cc108fc92653
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Alpha amd64 (20120117)
IwConfig:
 lo no wireless extensions.

 eth0 no wireless extensions.
MachineType: Hewlett-Packard HP Compaq dc5750 Microtower
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-10-generic root=UUID=9e251900-b9d7-4135-9c96-b3a417352468 ro quiet splash vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-3.2.0-10-generic N/A
 linux-backports-modules-3.2.0-10-generic N/A
 linux-firmware 1.67
RfKill:

SourcePackage: linux
UpgradeStatus: Upgraded to precise on 2012-01-19 (3 days ago)
dmi.bios.date: 08/07/2008
dmi.bios.vendor: Hewlett-Packard
dmi.bios.version: 786E3 v02.35
dmi.board.name: 0A64h
dmi.board.vendor: Hewlett-Packard
dmi.chassis.asset.tag: CZC7011NMX
dmi.chassis.type: 6
dmi.chassis.vendor: Hewlett-Packard
dmi.modalias: dmi:bvnHewlett-Packard:bvr786E3v02.35:bd08/07/2008:svnHewlett-Packard:pnHPCompaqdc5750Microtower:pvr:rvnHewlett-Packard:rn0A64h:rvr:cvnHewlett-Packard:ct6:cvr:
dmi.product.name: HP Compaq dc5750 Microtower
dmi.sys.vendor: Hewlett-Packard