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[Bug 744187] Re: [g45] Black screen on boot acer travelmate 5735Z, intel gma 4500mhd

To: ubuntu-x-swat@xxxxxxxxxxxxxxxxxxx
From: zigzag <744187@xxxxxxxxxxxxxxxxxx>
Date: Sat, 09 Jul 2011 09:42:05 -0000
Reply-to: Bug 744187 <744187@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx

Confirmed for TravelMate 5735z with intel gma 4500MHD on Natty 64-bit.

The problem does however not appear for me if I already use the
backlight adjustment keys (fn + left arrow) during the bios boot screen.
The backlight adjustment does however not work in natty anymore.

Adding options "acpi_osi=Linux acpi_backlight=legacy" in GRUB (like in
bug https://bugs.launchpad.net/ubuntu/+source/linux/+bug/518002) enabled
backlight adjustment using fn+arrow keys. This also allows for turning
backlight back on when encountering a black screen.

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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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