[Bug 877278] Re: Boot fails on T61, screen stays blank

[Steve Langasek]

You seem to have done a good deal of initial investigation into the
cause of the problem - thanks for that!

There is some conflicting information in your report, in that you say recovery mode works but booting with linux_gfx_mode=text does not.  The differences between recovery mode and regular mode are:
 - linux_gfx_mode=keep is never set in recovery mode
 - the 'quiet', 'splash', and 'vt.handoff=7' options are not set
 - the 'nomodeset' option is set instead
 - the system is booted straight to the recovery mode menu, without running udev or starting X

The first two of these you've already tested.  The third one should have
no effect here because you're using the nvidia driver, which doesn't
support modesetting anyway.  Only the last variable seems to not be
accounted for.

Do you have the cryptsetup package installed on this system?  What does
'xrandr' show as the list of supported resolutions?  After setting
GRUB_GFXMODE, do you see the plymouth splash screen, or do you only see
X?

** Changed in: plymouth (Ubuntu)
       Status: New => Incomplete

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https://bugs.launchpad.net/bugs/877278

Title:
  Boot fails on T61, screen stays blank

Status in “plymouth” package in Ubuntu:
  Incomplete

Bug description:
  After a clean install of 11.10 and installation of nvidia-current on a
  Lenovo T61 the system doesn't boot. After grub the screen is blank
  except the cursor. Booting via recovery mode is possible though.

  A boot with "linux_gfx_mode=text" and removed kernel options "quiet",
  "splash" and "vt.handoff=7" also freezes (see screenshot).

  
  Workarround:
  After adding "GRUB_GFXPAYLOAD_LINUX=1024x768" to /etc/default/grub and running "update-grub" the system is booting.

  ProblemType: Bug
  DistroRelease: Ubuntu 11.10
  Package: plymouth 0.8.2-2ubuntu28
  ProcVersionSignature: Ubuntu 3.0.0-12.20-generic-pae 3.0.4
  Uname: Linux 3.0.0-12-generic-pae i686
  NonfreeKernelModules: nvidia
  ApportVersion: 1.23-0ubuntu3
  Architecture: i386
  Date: Tue Oct 18 11:41:40 2011
  DefaultPlymouth: /lib/plymouth/themes/ubuntu-logo/ubuntu-logo.plymouth
  InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release i386 (20111011)
  MachineType: LENOVO 7663PJG
  PccardctlIdent:
   Socket 0:
     no product info available
  PccardctlStatus:
   Socket 0:
     no card
  ProcCmdLine: BOOT_IMAGE=/vmlinuz-3.0.0-12-generic-pae root=/dev/mapper/hostname-root ro quiet splash vt.handoff=7
  ProcFB: 0 VESA VGA
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.0.0-12-generic-pae root=/dev/mapper/hostname-root ro quiet splash vt.handoff=7
  SourcePackage: plymouth
  TextPlymouth: /lib/plymouth/themes/ubuntu-text/ubuntu-text.plymouth
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 01/21/2008
  dmi.bios.vendor: LENOVO
  dmi.bios.version: 7LETB0WW (2.10 )
  dmi.board.name: 7663PJG
  dmi.board.vendor: LENOVO
  dmi.board.version: Not Available
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Not Available
  dmi.modalias: dmi:bvnLENOVO:bvr7LETB0WW(2.10):bd01/21/2008:svnLENOVO:pn7663PJG:pvrThinkPadT61:rvnLENOVO:rn7663PJG:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
  dmi.product.name: 7663PJG
  dmi.product.version: ThinkPad T61
  dmi.sys.vendor: LENOVO

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