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Re: getting external monitors to work with 15" powerbook

Hey Soeren,

thats my website you cited there (although it's official home is now
http://www.johnleach.co.uk/documents/powerpc/ but it's the same

Just to update you, I still have the yellowy tinge on an external
analogue monitor with 2.4.21-rc2-ben0 and the updated drm-trunk code
(giving me a radeon.o kernel drm module of version 1.8.0.)

I'm unable to test a digital flat panel at present.

If anyone is interested, I took a screen-shot of the yellowness which
subtly does not affect the entire screen all of the time.  I thought it
strange I could actually take a screen-shot at all that still looked
yellow on a normal display. 


My friend has the same problem with his Radeon 7500 (mine is a Radeon


On Mon, 2003-05-26 at 11:48, Soeren Sonnenburg wrote:
> Hi...
> 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... so
> I guess there is some conflict between the fb and Xfree driver.
> 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.
> I am on 2.4.20-benh10 / XFree86 4.3.
> I wonder whether someone has it working ... ?
> I guess it would be best to have XFree allowing for dynamically adding
> screens... and to turn on a second display with some tool... mirroring
> makes no sense in 99.99% of the cases as there is no monitor/DFP
> correctly displaying 1280x854 ...
> As this is the *only* thing not working perfectly on the 15" powerbook
> series it is probably worth investing quite some time... so I am very
> open for discussion.
> Best,
> Soeren.
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   HTTP: http://www.johnleach.co.uk

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