Public bug reported:

Laptop: Fujitsu-Siemens AMILO M7400
Video: Intel 82855GM

1. When set to switch off display after some time (is screensaver
options) the internal LCD is going black, but the backlight keeps on.
External CRT switches off completely (as it should).

2. When waking up from sleep/hibernation the screen is black (with the
backlight on again), and there's no way (except rebooting) to get it
working.

** Affects: Ubuntu
     Importance: Untriaged
         Status: Unconfirmed

-- 
ACPI video problems
https://launchpad.net/bugs/50960

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