[Bug 1048261] Re: Blank screen during system startup with Precise/Nouveau

Jan Rathmann janrathmann at t-online.de
Mon Sep 10 13:40:18 UTC 2012


Here is the dmesg output of such a boot.

The graphics board seems to have a TV out indeed, but it has never been
used. Only the TFT flatscreen is connected via VGA out.

If the monitor is turned on only at the end of the boot, it would
explain of course the observed behaviour that the monitor receives no
input signal during boot.

Kind regards,

** Attachment added: "dmesg of booting with GRUB_GFXPAYLOAD_LINUX=text"

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  Blank screen during system startup with Precise/Nouveau

Status in “plymouth” package in Ubuntu:

Bug description:

  if I boot the Precise installation on the PC this report has been sent
  from (using Nouveau drivers on a Geforce 2 MX card), the screen stays
  blank ("No Signal") during the boot process:

  - The grub menu is displayed as usual (allthough in low resolution of 1024x768, while the display's native resolution is 1280x1024)
  - Then a few seconds after the text of the grub menu disappeared, the screen goes blank (and turns of a few seconds later due to lack of input signal). In this phase usually the Plymouth boot logo should appear.
  - When the display manager is loaded, the screen finally turns back on again/receives input again.

  This happens regardless if the system is upgraded or freshly

  It is also a regression from Lucid, where the boot process worked
  without such problems on this machine (also with Nouveau drivers).

  If I set GRUB_GFXPAYLOAD_LINUX=text in /etc/default/grub, I get the
  text-only boot logo with correct screen resolution on startup and
  monitor doesn't power off in this case.

  If I boot using "nomodeset", the graphical boot logo is displayed
  correctly but the screen resolution on the desktop is limited to
  1024x768 (which is not acceptable).

  Kind regards,

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: plymouth 0.8.2-2ubuntu30
  ProcVersionSignature: Ubuntu 3.2.0-30.48-generic-pae 3.2.27
  Uname: Linux 3.2.0-30-generic-pae i686
  ApportVersion: 2.0.1-0ubuntu12
  Architecture: i386
  Date: Sun Sep  9 16:34:19 2012
  DefaultPlymouth: /lib/plymouth/themes/ubuntu-logo/ubuntu-logo.plymouth
  MachineType: ECS K7S5A
  ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-30-generic-pae root=UUID=979d6337-c3a8-4daa-9a97-4cd021dcb572 ro quiet splash vt.handoff=7
   PATH=(custom, user)
  ProcFB: 0 nouveaufb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-30-generic-pae root=UUID=979d6337-c3a8-4daa-9a97-4cd021dcb572 ro quiet splash vt.handoff=7
  SourcePackage: plymouth
  TextPlymouth: /lib/plymouth/themes/ubuntu-text/ubuntu-text.plymouth
  UpgradeStatus: Upgraded to precise on 2012-09-09 (0 days ago)
  dmi.bios.date: 04/02/01
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 07.00T
  dmi.board.name: K7S5A
  dmi.board.vendor: ECS
  dmi.board.version: 1.0
  dmi.chassis.asset.tag: 0123ABC
  dmi.chassis.type: 3
  dmi.chassis.vendor: ECS
  dmi.chassis.version: Version 1.00
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr07.00T:bd04/02/01:svnECS:pnK7S5A:pvr1.0:rvnECS:rnK7S5A:rvr1.0:cvnECS:ct3:cvrVersion1.00:
  dmi.product.name: K7S5A
  dmi.product.version: 1.0
  dmi.sys.vendor: ECS

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