Public bug reported:

When I boot my PC, the display blacks out immediately after the GRUB
screen, and nothing appears afterwards.  If I press Ctrl-Alt-F1 when the
boot completes (i.e., when the disk access stops), the text console
screen appears and shows a login prompt as expected (in the PC's native
resolution).  And after I see teh text console, I can press Ctrl-Alt-F7
to show the graphical login screen, but on the display the *lower half*
of the graphical login screen appears on the upper half of the physical
display, and the lower half of the dispay is just black.  The Ctrl-
Alt-F7 works only after seeing the text console; if I pressed Ctrl-
Alt-F7 immediately after the boot completion (without pressing Ctrl-
Alt-F1), nothing happens on the display.

When I typed a user ID and password on the half-trimmed graphical
screen, I can login to the graphical desktop, but the lower half of the
display is still black, and the upper half of the dispay appears showing
*both* upper and lower halves of the logical screen, overwriting each
other in parts in a redraw order.  And if I can manage to logout, the
display shows the login screen correctly (after a gray transition
screen).

The above behaviour is observed when booting from a system installed to
the disk drive using the Live CD.  Booting the Live CD itself does not
cause the black out; it causes upper-half phenomenon only.  The
graphical boot screen first shows up using entire display.  It is later
broken with several kernel error messages, but the slowly brinking dots
under the ubuntu logo are visible during the entire boot process.  After
completion of the boot, some broken graphical screen (intended for
asking "Try ubuntu" or "Insall") appears on the upper half of the
display, leaving some kernel error messages on the lower half of the
display.  If I can manage to choose "Try ubuntu" on the broken screen,
the tryout desktop appears correctly using entire display.  (So, I could
install ubuntu to the disk drive.)

If I entirely disable plymouth on the installed system (i.e., remove all
/etc/init/plymouth*.conf files as suggested in pages found by google
search), the blackout-during-and-after-boot behaviour persists, but the
first graphical screen I see after boot, then Ctrl-Alt-F1 then Ctrl-
Alt-F7 appears correctly using entire display, so I don't need an extra
login-logout cycle on a broken screen.  That's my current workaround...

I'm using Fujitsu Lifebook TH40D, a "hybrid of note and tablet" PC.  It
has Atom Z670 with SM35 Express chipset, providing GMA 600 graphics
subsystem.

I trid Live CD media of 12.04 LTS (Precise angolin) alpha 1.  The
installed system's behaviour persists after "apt-get dist-upgrade" today
(2012-01-22 Japan time).

P.S., I'm exciting to see the poulsbo support in ubuntu comes to very
close to production use, and is very likely to be integrated in the
official ubuntu distribution soon.  I appreciate GMA500 team.  Hope this
report help improving the psb_gfx driver.

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 i686
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
AplayDevices:
 **** List of PLAYBACK Hardware Devices ****
 card 0: Intel [HDA Intel], device 0: ALC269VB Analog [ALC269VB Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
ApportVersion: 1.91-0ubuntu1
Architecture: i386
ArecordDevices:
 **** List of CAPTURE Hardware Devices ****
 card 0: Intel [HDA Intel], device 0: ALC269VB Analog [ALC269VB Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC0:  john       1527 F.... pulseaudio
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0xffaf4000 irq 41'
   Mixer name   : 'Realtek ALC269VB'
   Components   : 'HDA:80862881,80860101,00100000 
HDA:10ec0269,10cf1000,00100100'
   Controls      : 13
   Simple ctrls  : 8
Date: Sun Jan 22 11:33:52 2012
HibernationDevice: RESUME=UUID=8316ea9b-fd3b-4fda-aac6-0da766a298db
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Alpha i386 (20111129.1)
MachineType: FUJITSU FMVT40D
ProcEnviron:
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-10-generic 
root=UUID=174e7d4f-aee7-44e2-b813-891b69ca2823 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
SourcePackage: linux
StagingDrivers: psb_gfx
UpgradeStatus: Upgraded to precise on 2012-01-21 (0 days ago)
dmi.bios.date: 07/06/2011
dmi.bios.vendor: FUJITSU // Phoenix Technologies Ltd.
dmi.bios.version: Version 1.05
dmi.board.name: FJNBB1B
dmi.board.vendor: FUJITSU
dmi.chassis.type: 10
dmi.chassis.vendor: FUJITSU
dmi.modalias: 
dmi:bvnFUJITSU//PhoenixTechnologiesLtd.:bvrVersion1.05:bd07/06/2011:svnFUJITSU:pnFMVT40D:pvr:rvnFUJITSU:rnFJNBB1B:rvr:cvnFUJITSU:ct10:cvr:
dmi.product.name: FMVT40D
dmi.sys.vendor: FUJITSU

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: apport-bug i386 precise running-unity staging

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https://bugs.launchpad.net/bugs/919888

Title:
  Display blacks out during boot, then only upper half is used after the
  boot, on GMA600

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