Re: [radeonfb] black screen/wrong display size detected

[Benjamin Herrenschmidt]

On Thu, 2004-02-19 at 03:42, Andreas Happe wrote:
> display turns black after loading radeon on bootup (compiled in). It
> stays black, even after xdm should have started.

Is backlight off or is it enabled and just screen content is
black ? (Do you have working backlight control keys on the kbd ?)

> | radeonfb: Found Intel x86 BIOS ROM Image
> | radeonfb: Retreived PLL infos from BIOS
> | radeonfb: Reference=27.00 MHz (RefDiv=12) Memory=250.00 Mhz, System=220.00 MHz
> .../...
> | radeonfb: Monitor 1 type LCD found
> | radeonfb: Monitor 2 type no found
> | radeonfb: panel ID string: Samsung LTN150P1-L02    
> | radeonfb: detected LVDS panel size from BIOS: 1400x1050
> 
> wrong size detected, display is 1680x1050.

That's interesting. 

Enable radeon debug options and send me the output. Also try
commenting out the call to radeon_map_ROM(rinfo, pdev);
in drivers/video/aty/radeon_base.c and send me that output
as well (send me both, even if commenting out the call "fixes"
it).

> | radeondb: BIOS provided dividers will be used
> | radeonfb: Assuming panel size 1400x1050
> | radeonfb: Power Management enabled for Mobility chipsets
> | radeonfb: ATI Radeon Lf  DDR SGRAM 64 MB
> | Machine check exception polling timer started.
-- 
Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx>

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/