Thread (12 messages) 12 messages, 4 authors, 2004-11-03

Re: [Linux-fbdev-devel] Help re Frame Buffer/Console Problems

From: Mark Fortescue <hidden>
Date: 2004-11-02 14:30:46
Also in: lkml, sparclinux

Hi all,

I have already hard wired the fg and bg colours. I have got to the point 
where I am checking the cfbimgblt code where it converts the mono bit font
image data to the 8bpp pseudo colour screen image data. It is looking
like there may be a problem with sign extension at this level as the
pixel value being used apears to be 255.

I have changed a char *pt to a u8 *pt to see if this helps.

Regards
	Mark Fortescue.

On Tue, 2 Nov 2004, Antonino A. Daplas wrote:
On Tuesday 02 November 2004 01:32, Mark Fortescue wrote:
quoted
Hi all,

Thanks for the info Antonino. I see you spotted my typing error. Yes it is
the 2.6.10-rc1-bk6 kernel. The oter error is the 2.2.8.1. It should be
2.6.8.1.

The cgthree driver does not currently set up the all->info.var.red,
all->info.var.green or all->info.var.blue structures. Putting a value of 8
in the length field of these structures (correct for the cgthree) does get
me my logo back but I am still getting black on black text. It makes it
very difficult to read. It is begining to look like there is something
werid going on with the colour pallet stuf for PSEUDO_COLOUR.
I doubt that the problem is at the driver layer since you were able to
see the logo. It's probably higher up.

Try this mod, hardwire the foreground color to 0x07.

Edit drivers/video/console/bitblit.c:bit_putcs() and change this line:

image.fg_color = fg;
image.bg_color = bg;

to

image.fg_color = 0x07070707;
image.bg_color = 0x0;

You can also try the reverse:

image.fg_color = 0x0;
image.bg_color = 0x07070707

If you get visible text, the problem is either in fbcon.c or vt.c.

Tony
  
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