Hi Bradley,
Sometimes this is actually the BIOS or monitor performing the
dimming/standby. Could you post the output of:
cat /var/lib/acpi-support/*-*
so that we can identify your machine type. Does the screen (a) dim, (b)
blank, (c) back-light turn off, or (d) standby [if an external monitor].
If an external monitor goes into standby, normally the power LED would
change colour and the monitor make a slight noise whilst the electrical
relay clicks. If the screen is just dimmed, the screen would still be
quite visible, except in direct-sunlight. If the backlight of an LCD is
being switch off (but the screen left on), it will be possible to see
some output of the screen display if you look carefully.
** Changed in: gnome-power-manager (Ubuntu)
Importance: Undecided => Low
Status: Unconfirmed => Needs Info
--
my screen will 'black out' if left unattended even though that option is
disabled
https://launchpad.net/bugs/50076
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