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[Tristan B <744187@xxxxxxxxxxxxxxxxxx>]

The problem seems to be solved for me after performing the following
steps which are a combination of littleendians solution and a post from
unknown47 in this forum entry:
http://ubuntuforums.org/showthread.php?t=1743301.

1. Goto edit-mode in grub and add "acpi_osi=Linux" to the line that says "... quiet splash ..."
2. Now you can boot into ubuntu. To make this grub change persistent
edit the /etc/default/grub. Change the "GRUB_CMDLINE_LINUX_DEFAULT" line into
GRUB_CMDLINE_LINUX_DEFAULT = "quiet splash acpi_osi = Linux"
3. Execute sudo update-grub2
4. Add "setpci -s 00:02.0 F4.B=00" to /etc/rc.local and to the scripts in /etc/pm/sleep.d. Added this line always at the beginning of the scripts.
5. Reboot and everything should be fine.... so far

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https://bugs.launchpad.net/bugs/744187

Title:
  [g45] Black screen on boot acer travelmate 5735Z, intel gma 4500mhd

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