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[Lcdproc] Flashing screen fixed...

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  • From: bsdfan at (Markus Dolze)
  • Subject: [Lcdproc] Flashing screen fixed...
  • Date: Fri, 12 Jun 2009 18:45:58 +0200


it is true that the backlight seems flashing if the serverscreen is on and a
client has turned the backlight off.

It is a common misunderstanding of how the backlight setting works in LCDproc
(BTW: the heartbeat works the same).

The backlight control is enforced by LCDd. There is one global setting
(backlight) in LCDd.conf which can be 'on', 'off', or 'open'. These are
enforced for all clients (including the internal one). While on/off are
obvious, 'open' means that the client may control the backlight for its own

So if there is any other client connected (including the server), that client
may have different backlight settings. Especially the backlight will be ON if
not configured otherwise.

It is not possible to turn the backlight off globally by a client. This is by
design. If you want users to experience a completely OFF backlight, you need
to tell them to set serverscreen=no and to not connect other clients.


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