Gerhard Burger, thank you for reporting this and helping make Ubuntu
better. Could you please provide the information following
https://wiki.ubuntu.com/DebuggingKernelBoot ?

As well, could you please test the latest upstream kernel available following 
https://wiki.ubuntu.com/KernelMainlineBuilds ? It will allow additional 
upstream developers to examine the issue. Please do not test the kernel in the 
mainline kernels archive directory daily folder, but the one all the way at the 
bottom. Once you've tested the upstream kernel, please comment on which kernel 
version specifically you tested. If this bug is fixed in the mainline kernel, 
please add the following tags:
kernel-fixed-upstream
kernel-fixed-upstream-VERSION-NUMBER

where VERSION-NUMBER is the version number of the kernel you tested. For 
example:
kernel-fixed-upstream-v3.7-rc1-quantal

This can be done by clicking on the yellow circle with a black pencil icon next 
to the word Tags located at the bottom of the bug description. As well, please 
remove the tag:
needs-upstream-testing

If the mainline kernel does not fix this bug, please add the following tags:
kernel-bug-exists-upstream
kernel-bug-exists-upstream-VERSION-NUMBER

As well, please remove the tag:
needs-upstream-testing

If you are unable to test the mainline kernel, please comment as to why 
specifically you were unable to test it and add the following tags:
kernel-unable-to-test-upstream
kernel-unable-to-test-upstream-VERSION-NUMBER

Please let us know your results. Thank you for your understanding.

Helpful bug reporting tips:
https://help.ubuntu.com/community/ReportingBugs

** Description changed:

- Quite regularly the graphics driver does not load on boot and I am stuck with 
a purple screen.
- Grub shows fine but when I select Ubuntu I get the purple screen.
- On a succesfull boot the purple screen disappears and I see the runscripts (I 
removed 'quiet splash' from the boot options'), but sometimes the screen merely 
flickers and stays purple.
+ My machine is a samsung-305u1 (with a AMD Fusion E-350) and I use the open 
source drivers. Quite regularly the graphics driver does not load on boot and I 
am stuck with a purple screen. Grub shows fine but when I select Ubuntu I get 
the purple screen. On a successful boot the purple screen disappears and I see 
the runscripts (I removed 'quiet splash' from the boot options'), but sometimes 
the screen merely flickers and stays purple.
  However the system is still responsive, I can use Alt+SysReq+REISUB to reboot 
and I can even ssh to my machine.
- 
- My machine is a samsung-305u1 (with a AMD Fusion E-350) and I use the open 
source drivers.
  According to http://ubuntuforums.org/showthread.php?t=2012657 the problem can 
also occur on nvidia machines, and by typing the following commands in the grub 
commandline the system boots fine:
- 
  test
  continue
  videoinfo
  normal
  
- Setting 'nomodeset' also seems to work but this boots my machine to
- unity 2d.
- 
- The problem seems to occur quite randomly, but by doing the next steps I
- can reproduce the problem 4 out of 5 times:
- 
+ The problem seems to occur quite randomly, but by doing the next steps I can 
reproduce the problem 4 out of 5 times:
  1. Boot normally
  2. Connect external monitor with larger resolution
  3. Close the lid of the laptop ( i guess this turns of the laptop screen)
  4. Shutdown
  5. Remove the external monitor
  6. open the lid and power on
  
- Because I can ssh into the machine i can provide error logs, but I don't know 
which ones to provide, so someone please point me in the right direction...
- --- 
+ Because I can ssh into the machine i can provide error logs, but I don't
+ know which ones to provide, so someone please point me in the right
+ direction...
+ 
+ WORKAROUND:
+ Setting:
+ nomodeset
+ 
+ also seems to work but this boots my machine to unity 2d.
+ 
+ ---
  AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
  ApportVersion: 2.0.1-0ubuntu14
  Architecture: amd64
  ArecordDevices:
-  **** List of CAPTURE Hardware Devices ****
-  card 1: SB [HDA ATI SB], device 0: ALC269VB Analog [ALC269VB Analog]
-    Subdevices: 1/1
-    Subdevice #0: subdevice #0
+  **** List of CAPTURE Hardware Devices ****
+  card 1: SB [HDA ATI SB], device 0: ALC269VB Analog [ALC269VB Analog]
+    Subdevices: 1/1
+    Subdevice #0: subdevice #0
  AudioDevicesInUse:
-  USER        PID ACCESS COMMAND
-  /dev/snd/controlC1:  gerhard    1664 F.... pulseaudio
-  /dev/snd/controlC0:  gerhard    1664 F.... pulseaudio
+  USER        PID ACCESS COMMAND
+  /dev/snd/controlC1:  gerhard    1664 F.... pulseaudio
+  /dev/snd/controlC0:  gerhard    1664 F.... pulseaudio
  Card0.Amixer.info:
-  Card hw:0 'Generic'/'HD-Audio Generic at 0xfeb44000 irq 43'
-    Mixer name : 'ATI R6xx HDMI'
-    Components : 'HDA:1002aa01,00aa0100,00100200'
-    Controls      : 6
-    Simple ctrls  : 1
+  Card hw:0 'Generic'/'HD-Audio Generic at 0xfeb44000 irq 43'
+    Mixer name : 'ATI R6xx HDMI'
+    Components : 'HDA:1002aa01,00aa0100,00100200'
+    Controls      : 6
+    Simple ctrls  : 1
  Card0.Amixer.values:
-  Simple mixer control 'IEC958',0
-    Capabilities: pswitch pswitch-joined penum
-    Playback channels: Mono
-    Mono: Playback [on]
+  Simple mixer control 'IEC958',0
+    Capabilities: pswitch pswitch-joined penum
+    Playback channels: Mono
+    Mono: Playback [on]
  Card1.Amixer.info:
-  Card hw:1 'SB'/'HDA ATI SB at 0xfeb40000 irq 16'
-    Mixer name : 'Realtek ALC269VB'
-    Components : 'HDA:10ec0269,144dc600,00100100'
-    Controls      : 19
-    Simple ctrls  : 11
+  Card hw:1 'SB'/'HDA ATI SB at 0xfeb40000 irq 16'
+    Mixer name : 'Realtek ALC269VB'
+    Components : 'HDA:10ec0269,144dc600,00100100'
+    Controls      : 19
+    Simple ctrls  : 11
  DistroRelease: Ubuntu 12.04
  HibernationDevice: RESUME=UUID=a61a19a0-e46b-4166-ba49-6a56ed9a4673
  InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 
(20120425)
  MachineType: SAMSUNG ELECTRONICS CO., LTD. 305U1A
  Package: linux (not installed)
  ProcEnviron:
-  TERM=xterm
-  PATH=(custom, no user)
-  LANG=en_US.UTF-8
-  SHELL=/bin/bash
+  TERM=xterm
+  PATH=(custom, no user)
+  LANG=en_US.UTF-8
+  SHELL=/bin/bash
  ProcFB: 0 radeondrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-32-generic 
root=UUID=efa624b8-abed-4c31-a30e-08852678e504 ro
  ProcVersionSignature: Ubuntu 3.2.0-32.51-generic 3.2.30
  RelatedPackageVersions:
-  linux-restricted-modules-3.2.0-32-generic N/A
-  linux-backports-modules-3.2.0-32-generic  N/A
-  linux-firmware                            1.79.1
+  linux-restricted-modules-3.2.0-32-generic N/A
+  linux-backports-modules-3.2.0-32-generic  N/A
+  linux-firmware                            1.79.1
  Tags:  precise running-unity
  Uname: Linux 3.2.0-32-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip disk lpadmin plugdev sambashare sudo
  dmi.bios.date: 07/29/2011
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 01PS.M002.20110729.LEO
  dmi.board.asset.tag: To be filled by O.E.M.
  dmi.board.name: 305U1A/305U1A
  dmi.board.vendor: SAMSUNG ELECTRONICS CO., LTD.
  dmi.board.version: 01PS
  dmi.chassis.asset.tag: No Asset Tag
  dmi.chassis.type: 9
  dmi.chassis.vendor: SAMSUNG ELECTRONICS CO., LTD.
  dmi.chassis.version: N/A
  dmi.modalias: 
dmi:bvnAmericanMegatrendsInc.:bvr01PS.M002.20110729.LEO:bd07/29/2011:svnSAMSUNGELECTRONICSCO.,LTD.:pn305U1A:pvr01PS:rvnSAMSUNGELECTRONICSCO.,LTD.:rn305U1A/305U1A:rvr01PS:cvnSAMSUNGELECTRONICSCO.,LTD.:ct9:cvrN/A:
  dmi.product.name: 305U1A
  dmi.product.version: 01PS
  dmi.sys.vendor: SAMSUNG ELECTRONICS CO., LTD.

** Summary changed:

- graphics driver does not load on boot
+ 1002:9802 graphics driver does not load on boot

** Changed in: linux (Ubuntu)
   Importance: Undecided => Medium

** Changed in: linux (Ubuntu)
       Status: Confirmed => Incomplete

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https://bugs.launchpad.net/bugs/1069353

Title:
  1002:9802 graphics driver does not load on boot

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