Richard Bailey, this bug was reported a while ago and there hasn't been
any activity in it recently. We were wondering if this is still an
issue? If so, could you please test for this with the latest development
release of Ubuntu? ISO images are available from
http://cdimage.ubuntu.com/daily-live/current/ .

If it remains an issue, could you please run the following command in
the development release from a Terminal
(Applications->Accessories->Terminal), as it will automatically gather
and attach updated debug information to this report:

apport-collect -p xorg-server REPLACE-WITH-BUG-NUMBER

Please note, given that the information from the prior release is
already available, doing this on a release prior to the development one
would not be helpful.

Thank you for your understanding.

Helpful bug reporting tips:
https://wiki.ubuntu.com/ReportingBugs

** Changed in: xorg-server (Ubuntu)
   Importance: Undecided => Low

** Changed in: xorg-server (Ubuntu)
       Status: Confirmed => Incomplete

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https://bugs.launchpad.net/bugs/991973

Title:
  backlight comes back on after screen is blaned and powered off

Status in “xorg-server” package in Ubuntu:
  Incomplete

Bug description:
  I am using 12.04 LTS (Lubuntu) on a Sony VAIO YB3V1E/S with AMD E-450.

  If I tell xscreensaver to "quick power off the display in blank only
  mode", then when the screen is blanked, the backlight stays off  only
  for a minute or two and then the backlight comes back on.

  I am usigng the fglrx driver from the Ubuntu repository.

  I think this is an X server bug because if I turn dpms off in the
  xorg.conf, and then ssh into the blanked machine and use vbetool to
  turn off the backlight, then it doesn't come back on by itself.

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