I'm afraid I no longer have access to the hardware needed to reproduce
this bug (and I doubt running recent versions of Ubuntu on hardware
supported by viafb is something many other people do, either).

Please do whatever's necessary to reflect that to this bug's state,
assuming leaving it permanently incomplete is not desirable (I wanted to
mark it "Won't fix", but launchpad won't let me).

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  viafb and vga16fb turn off lcd on an acer aspire 1350

Status in “linux” package in Ubuntu:

Bug description:
  After upgrading from karmic to lucid my laptop turns off its lcd panel
  early during boot, after which I cannot figure out a way to turn it
  back on. X starts (I can hear the gdm drums and log in blindly), I can
  ctrl+alt+f1 out of X and alt+f7 back into X, but during all this I get
  no output on the screen. Blacklisting the viafb module gives me a
  garbled framebuffer. Blacklisting vga16fb too makes everything work.

  Fixing this is a little annoying because just disabling X still does
  not give you a working shell (I used a rescue cd to edit
  /etc/modprobe.d/blacklist.conf). So it might be nice to fix this
  before lucid is released, even if it involves disabling viafb on more
  systems than strictly necessary.

  I'd be happy to test any patched kernel images that might avoid this

  ProblemType: Bug
  DistroRelease: Ubuntu 10.04
  Package: linux-image-2.6.32-20-generic 2.6.32-20.30
  Regression: Yes
  Reproducible: Yes
  ProcVersionSignature: Ubuntu 2.6.32-20.30-generic
  Uname: Linux 2.6.32-20-generic i686
  AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.21.
  Architecture: i386
   /dev/snd/controlC0:  marienz    1482 F.... pulseaudio
   Card hw:0 'V8235'/'VIA 8235 with ALC202 at 0x1400, irq 9'
     Mixer name : 'Realtek ALC202 rev 0'
     Components : 'AC97a:414c4740'
     Controls      : 44
     Simple ctrls  : 26
   Card hw:1 'modem'/'VIA 82XX modem at 0x1800, irq 9'
     Mixer name : 'Silicon Laboratory Si3036,8 rev 7'
     Components : 'AC97m:53494c27'
     Controls      : 3
     Simple ctrls  : 3
   1-1/0: Silicon Laboratory Si3036,8 rev 7
   Extended modem ID: codec=1 LIN1
   Modem status     : GPIO MREF ADC1 DAC1 PRE(ADC2) PRF(DAC2) PRG(HADC) 
   Line1 rate       : 8000Hz
  Date: Tue Apr 13 20:36:59 2010
  EcryptfsInUse: Yes
  HibernationDevice: RESUME=UUID=875b30cc-e217-4eba-bc10-75ba897325af
  MachineType: Acer,Inc. Aspire 1350
   Socket 0:
     no product info available
   Socket 0:
     no card
  ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.32-20-generic 
root=/dev/mapper/main-karmic--root ro i8042.dritek=1 quiet splash
   PATH=(custom, user)
  RelatedPackageVersions: linux-firmware 1.33
  SourcePackage: linux
  dmi.bios.date: 07/29/2004
  dmi.bios.vendor: Acer
  dmi.bios.version: 3A29
  dmi.board.name: Aspire 1350
  dmi.board.vendor: Acer,Inc.
  dmi.board.version: Rev.A
  dmi.chassis.asset.tag: ��������������������������������
  dmi.chassis.type: 10
  dmi.chassis.vendor: Acer,Inc.
  dmi.chassis.version: 3A14
  dmi.product.name: Aspire 1350
  dmi.product.version: 3A14
  dmi.sys.vendor: Acer,Inc.

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