Re: [directfb-dev] printk on framebuffer console

["Antonino A. Daplas" <adaplas@gmail.com>]

Terence Soh wrote:
> Hi,
> 
> I'm seeking advise on getting printk displayed on the framebuffer console.

You're better off sending this to linux-fbdev-devel, so I'm adding
this to the CC list.

> 
> My display is RGB555 VGA resolution and I using the mainline kernel 
> font_8x8 for fonts and I've disabled the serial console and tile 
> blitting support. At the moment, the printk are printing black lines on 
> the screen instead of the printk statements.
> 
> In bitblit.c bit_putcs(),the image.depth = 1. Is this correct for my 
> application?
> 
> Also is font_8x8 suitable for 16 bit screens? It seems  like it's meant 
> for monochrome display.

Yes, the monochrome bitmap are expanded to the current foreground and
background colors of the console.

First, make sure that writing directly to the framebuffer memory displays
something properly on your monitor.

Then make sure that your driver has a working xxxfb_setcolreg function()
and that info->pseudo_palette is properly filled up.

Make sure also that info->var and info->fix are correctly set.

Tony


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