Public bug reported:

No signal received on the internal display during Ubuntu 12.10 bootup, X.Org 
works perfectly.
Using kernel 3.5.0-17, AMD HD 3200 with opensource drivers.

ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: linux-image-3.5.0-17-generic 3.5.0-17.28
ProcVersionSignature: Ubuntu 3.5.0-17.28-generic 3.5.5
Uname: Linux 3.5.0-17-generic x86_64
ApportVersion: 2.6.1-0ubuntu3
Architecture: amd64
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC0:  andrea     2104 F.... pulseaudio
Date: Sat Oct 20 16:54:27 2012
HibernationDevice: RESUME=UUID=bef95415-8c59-4dcc-8f9e-ce24cca2a40c
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 
(20120425)
MachineType: ASUSTeK Computer INC. 1201T
ProcFB: 0 radeondrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.5.0-17-generic 
root=UUID=b51a20fd-f61f-46b0-9b76-69ab2b545451 ro quiet splash pcie_aspm=force 
acpi_osi=Linux resume=/dev/sda6 vt.handoff=7 vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-3.5.0-17-generic N/A
 linux-backports-modules-3.5.0-17-generic  N/A
 linux-firmware                            1.95
SourcePackage: linux
UpgradeStatus: Upgraded to quantal on 2012-10-19 (0 days ago)
dmi.bios.date: 07/09/2010
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 0320
dmi.board.asset.tag: To Be Filled By O.E.M.
dmi.board.name: 1201T
dmi.board.vendor: ASUSTeK Computer INC.
dmi.board.version: x.xx
dmi.chassis.asset.tag: 0x00000000
dmi.chassis.type: 10
dmi.chassis.vendor: ASUSTeK Computer INC.
dmi.chassis.version: x.x
dmi.modalias: 
dmi:bvnAmericanMegatrendsInc.:bvr0320:bd07/09/2010:svnASUSTeKComputerINC.:pn1201T:pvrx.x:rvnASUSTeKComputerINC.:rn1201T:rvrx.xx:cvnASUSTeKComputerINC.:ct10:cvrx.x:
dmi.product.name: 1201T
dmi.product.version: x.x
dmi.sys.vendor: ASUSTeK Computer INC.

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


** Tags: amd64 apport-bug quantal running-unity

** Description changed:

- no signal received on the screen during Ubuntu 12.10 bootup, using
- kernel 3.5.0-17, AMD HD 3200 with opensource drivers
+ No signal received on the internal display during Ubuntu 12.10 bootup, X.Org 
works perfectly.
+ Using kernel 3.5.0-17, AMD HD 3200 with opensource drivers.
  
  ProblemType: Bug
  DistroRelease: Ubuntu 12.10
  Package: linux-image-3.5.0-17-generic 3.5.0-17.28
  ProcVersionSignature: Ubuntu 3.5.0-17.28-generic 3.5.5
  Uname: Linux 3.5.0-17-generic x86_64
  ApportVersion: 2.6.1-0ubuntu3
  Architecture: amd64
  AudioDevicesInUse:
-  USER        PID ACCESS COMMAND
-  /dev/snd/controlC0:  andrea     2104 F.... pulseaudio
+  USER        PID ACCESS COMMAND
+  /dev/snd/controlC0:  andrea     2104 F.... pulseaudio
  Date: Sat Oct 20 16:54:27 2012
  HibernationDevice: RESUME=UUID=bef95415-8c59-4dcc-8f9e-ce24cca2a40c
  InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 
(20120425)
  MachineType: ASUSTeK Computer INC. 1201T
  ProcFB: 0 radeondrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.5.0-17-generic 
root=UUID=b51a20fd-f61f-46b0-9b76-69ab2b545451 ro quiet splash pcie_aspm=force 
acpi_osi=Linux resume=/dev/sda6 vt.handoff=7 vt.handoff=7
  RelatedPackageVersions:
-  linux-restricted-modules-3.5.0-17-generic N/A
-  linux-backports-modules-3.5.0-17-generic  N/A
-  linux-firmware                            1.95
+  linux-restricted-modules-3.5.0-17-generic N/A
+  linux-backports-modules-3.5.0-17-generic  N/A
+  linux-firmware                            1.95
  SourcePackage: linux
  UpgradeStatus: Upgraded to quantal on 2012-10-19 (0 days ago)
  dmi.bios.date: 07/09/2010
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 0320
  dmi.board.asset.tag: To Be Filled By O.E.M.
  dmi.board.name: 1201T
  dmi.board.vendor: ASUSTeK Computer INC.
  dmi.board.version: x.xx
  dmi.chassis.asset.tag: 0x00000000
  dmi.chassis.type: 10
  dmi.chassis.vendor: ASUSTeK Computer INC.
  dmi.chassis.version: x.x
  dmi.modalias: 
dmi:bvnAmericanMegatrendsInc.:bvr0320:bd07/09/2010:svnASUSTeKComputerINC.:pn1201T:pvrx.x:rvnASUSTeKComputerINC.:rn1201T:rvrx.xx:cvnASUSTeKComputerINC.:ct10:cvrx.x:
  dmi.product.name: 1201T
  dmi.product.version: x.x
  dmi.sys.vendor: ASUSTeK Computer INC.

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https://bugs.launchpad.net/bugs/1069106

Title:
  Display off during booting

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