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Re: getting external monitors to work with 15" powerbook

On Mon, 2003-05-26 at 09:27, Soeren Sonnenburg wrote: 
> I am trying to get external displays to work with a 15" 1GHz Powerbook.
> So after googling for some time I found
> http://people.ecsc.co.uk/~john/documents/powerpc/ which works when
> connecting an analogous monitor with a pretty yellowish screen (cannot
> be recognized by just starting X and seeing the black/white pattern)...
> Certain options cause the machine to freeze but give correct color...

What options exactly? (it's generally a good idea to post config and log
files when discussing X problems ;)

> However I was able to get X working when a DFP (external TFT at
> 1600x1200) was connected. Unfortunately the internal display was then
> displaying weird stuff, and as I was afraid of destroying some hardware
> I quickly shut down X.
> So for me it looks like the fb driver can do certain parts to allow for
> external displays aswell as the X driver... but they seem to collide for
> certain settings.

Sure, radeonfb doesn't support the external output yet, so its behaviour
is undefined with Option "UseFBDev".

> I am on 2.4.20-benh10 / XFree86 4.3.

Where did you get 4.3 from?

> I guess it would be best to have XFree allowing for dynamically adding
> screens... and to turn on a second display with some tool... 

Sure would be nice, but I'm afraid that's 5.x material.

> mirroring makes no sense in 99.99% of the cases as there is no
> monitor/DFP correctly displaying 1280x854 ...

Absolutely, which is why the driver doesn't enable the external output
when it doesn't detect a display connected (note that there may still be
output coincidentally - have you guys checked in the log that the driver
is even trying to drive the external output?)

PS: Posting once is enough...

Earthling Michel Dänzer   \  Debian (powerpc), XFree86 and DRI developer
Software libre enthusiast  \     http://svcs.affero.net/rm.php?r=daenzer

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