[maemo-developers] Support for frame buffer in N800

From: Frantisek Dufka dufkaf at seznam.cz
Date: Wed Mar 21 10:37:20 EET 2007
Sampath Goud wrote:
> Hi,
> I want to know if there is frame buffer support in N800.

Yes. No support for console on framebuffer but generic framebuffer 
support shoud be there. Check /proc/fb.  Maybe you are using wrong 
device? There are three on N800 (one on N770). Not sure why it is like 
this and why there is difference between N770 and N800 but try the one 
with higher number (2?).

> I have written a simple application (drawing a pixel) on frame buffer 
> and tried to execute it on N800 in root mode.
> But it prompts the message "permission denied".

It should work but there is one small problem, see below :-)

> Please let me know if there is support for frame buffer in N800. If 
> there is support then how can I use it?

Problem is that the videochip is external so you won't see any output 
until you either issue proper update ioctl to update rectangle after you 
write your pixels or set the update mode to automatic (which is waste of 
resources, default is manual).


More information about the maemo-developers mailing list