[Date Prev][Date Next] [Thread Prev][Thread Next] [Date Index] [Thread Index]

Black screen when booting OF

On my PowerMacintosh 5500/275, when going into open firmware screen I only
got a very dark screen.
I've foundsome pokes to get the correct contrast and brightness value to
the screen (the 5500 is an all in one macintosh).

I would like to know if there was a version of quik that would correctly
set the contrast and brightness values of my screen device.

In open firware, the thing to do is :
cpoke 0a7 0f3000032
cpoke 093 0f3000033
cpoke 03c 0f300003a

it's a bit long to type this each time I reboot....
If I don't I even not able under linux to have good values for the screen.
On linux ppc (around 1.1.113 kernel) I tried to patchthe kernel myself
unsuccessfully (I missed something...)


Jean-Michel Rouet (thesard Dpt ITI) | Tel   : +33 298 001 057
ENST de Bretagne                    | email : JM.Rouet@enst-bretagne.fr
29285 Brest Cedex                   |                        
France                              | http://www-iti.enst-bretagne.fr/~rouet/

Reply to: