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

[Steve Langasek]

> 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.

Given that you have a drm framebuffer listed in /proc/fb, this shouldn't
happen.  Could you boot this way and attach the /var/log/dmesg that
results?

In the first dmesg log, I see the following:

[    4.990494] [drm] nouveau 0000:01:00.0: Setting dpms mode 3 on vga encoder (output 0)
[    4.990503] [drm] nouveau 0000:01:00.0: Setting dpms mode 3 on TV encoder (output 1)
[    5.152352] [drm] nouveau 0000:01:00.0: allocated 1280x1024 fb: 0x48000, bo eecfc800

I'm not sure what dpms mode 3 is.  Do you have both a vga display and a
TV out connected to this machine?

Later, we see:

[   51.160214] [drm] nouveau 0000:01:00.0: Setting dpms mode 3 on TV encoder (output 1)
[   51.170591] [drm] nouveau 0000:01:00.0: Setting dpms mode 0 on vga encoder (output 0)
[   51.170603] [drm] nouveau 0000:01:00.0: Output VGA-1 is running on CRTC 0 using output A
[   51.172240] [drm] nouveau 0000:01:00.0: Setting dpms mode 3 on TV encoder (output 1)
[   60.039444] init: plymouth-stop pre-start process (1240) terminated with status 1

This suggests that 'dpms mode 3' is off, and 'dpms mode 0' is on, and
the monitor is being turned on only towards the end of boot (the
plymouth-stop error message shows that plymouth has died before it can
be stopped normally).

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https://bugs.launchpad.net/bugs/1048261

Title:
  Blank screen during system startup with Precise/Nouveau

Status in “plymouth” package in Ubuntu:
  New

Bug description:
  Hello,

  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
  installed.

  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,
  Jan

  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
  ProcEnviron:
   TERM=xterm
   PATH=(custom, user)
   LANG=de_DE.UTF-8
   SHELL=/bin/bash
  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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