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[Lcdproc] Can only show 16x2 on 20x2 LCD

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  • From: bsdfan at (Markus Dolze)
  • Subject: [Lcdproc] Can only show 16x2 on 20x2 LCD
  • Date: Wed, 19 May 2010 20:18:43 +0200

On 19.05.2010 08:26, Dmitriy Abaimov wrote:
> Hello everyone, my first post here.
> I have lcdproc 0.5.3 built from source on Ubuntu 10.04 x64 system.
> Device attached is an lcd2usb clone with 20x2 LCD (hd44780 driver). Both
> initial LCDd screen and lcdproc screens fill up entire 20x2. But if I
> use plugins for either Banshee or Rhythmbox, they only use left 16
> symbols (both lines).
> These plugins are separate pieces of software, nothing common in the
> code so it looks like LCDd accepts only 16x2 if polled by an external
> software? Does that make sense to more experienced users here? Or is
> this just a coincidence that both plugins are internally limited to
> 16x2.
> Any Banshee and/or Rhythmbox users here? Can you confirm the limitation?
> Any ideas about extending the screen to the full 20 char lines will be
> appreciated.
> Thanks!
> D.


looking at the code of these plug-ins I see that:

* Banshee plug-in is internally limited to 2x16 (although it parses
the information it gets from LCDd)
* Rhythmbox plug-in uses a fixed length as well, which you can
change easy. Change DISPLAY_LENGTH on line 26 in


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