[Linux-fbdev-devel] Re: [BK fbdev updates]

[Marcelo P. <ma...@ma...>]

James Simmons wrote:

>>I have 2 machines that are running 2.5.56 beatifully, except for fbcon 
>>and ISDN.
>>The laptop runs ATI radeon - when I attempt to boot with radeonfb+fbcon 
>>statically linked it wraps the pixels as if the driver is using 1410 
>>pixels per row while the hardware only has 1400
>>    
>>
>
>Can you try it with the latest code. I think fixes are in the standard 
>tree for this.
>
Ok, I got some very good news. I found a workaround that lets me use 
rivafb+fbcon 99% ok.
I have a 1400x1050 LCD panel. When I boot with fbcon, it garbles the 
screen like it thinks the screen has 1450 or so pixels. I can't read 
individual characters, and the each line starts further and further to 
the right.
I can login and startx on the blind, here's an fbset output at that point:

mode "1400x1050-60"
    # D: 108.003 MHz, H: 63.983 kHz, V: 60.191 Hz
    geometry 1400 1050 1400 1050 8
    timings 9259 136 40 10 0 112 3
    rgba 6/0,6/0,6/0,0/0
endmode

The if I do an fbset -g 1280 1050 1280 1050 8, I can start seeing 
characters on the screen, here's the fbset output at this point:

mode "1280x1050-65"
    # D: 108.003 MHz, H: 68.879 kHz, V: 64.797 Hz
    geometry 1280 1050 1280 1050 8
    timings 9259 136 40 10 0 112 3
    rgba 8/0,8/0,8/0,0/0
endmode

At this point there's 3 problems:

1 - stty is still attempting to use 175 columns which would have been 
correct for 1400x1050 with a 8x16 font, but the screen is not set to 
1280, I do an stty columns 160 and that is now worked around.

2 - The cursor is gone, so I can't edit lines or run vi under fbcon.

3 - If I switch color depths, the code doesn't seem to be clearing the 
screen before rendering the new text, so I end up with 1 or more scaled 
down copies of the old text.

Starting to get useable here.

Now I'll test 2.5.58bk1 with tdfxfb+fbcon, I'll post more soon.

Thanks and I'll subscribe to linux-fbdev-devel so I can get posted on 
the updates,

Marcelo Pacheco