Re: disappearing display in 4.99.72

[Michael Lorenz <macallan%netbsd.org@localhost>]

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Hello,

On Sep 3, 2008, at 11:54 AM, Amitai Schlair wrote:

> Just to see if there were any obvious post-4.0 problems lurking in - 
> current, I test-booted the most recent autobuilt kernel from HEAD  
> on my mini. It booted multiuser but stopped driving the display (a  
> 15" LCD, Dell E152FPc) partway through hardware detection --  
> presumably right around the time video is configured. Here's the  
> dmesg:

Here's the culprit:
> radeonfb0 at pci0 dev 16 function 0: ATI Technologies Radeon 9200 5962
> radeonfb0: port 0: physical 1024x768 60Hz
... there's a reason why radeonfb is disabled in all release branches.
Anyway, is that the right video mode for whatever display you're  
using? If not, please add a modeline for whatever the right mode is  
to dev/videomodes/
In any case, genfb should Just Work(tm).
If the mode's correct is there any chance to verify that radeonfb  
really programmed the timing it said it would? ( as in - could you  
hook up another monitor that works at 1024x768 at 60Hz? )
And finally, on some hardware radeonfb fails to program video modes  
and ends up with a black screen. It works on my hardware ( iBook G4  
with Mobility Radeon 9200 and an Ultra 60 with an XVR-100 which is a  
radeon 7500 with Sun firmware. ) so I can't debug the problem ( not  
that I have hardware docs anyway ).

have fun
Michael

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