radeon MergedFB issues

Benjamin Herrenschmidt benh at kernel.crashing.org
Mon Mar 13 13:28:15 PST 2006

On Mon, 2006-03-13 at 05:45 -0500, Paul Kaplan wrote:
> > Ok. BTW. You are very much welcome having a go at fixing MergedFB :)
> >
> > I've been playing a bit on a co-worker machine with MergedFB trying to
> > setup the laptop so that you have 2 MetaModes: one mergedfb dual head
> > covering both internal LCD and external screen, and one clone mode based
> > on the resolution of the latop panel. This is the "ideal" situation
> > since it allows to unplug/replug the external monitor and just use
> > xrandr to "adjust"... still not nearly as good as MacOS or Windows but
> > one step further.
> >
> Not how much/whether this will help.  I'd been running a dual screen setup 
> using Xinerama.  The xorg.conf file became totally useless with 6.9 with no 
> output to the external monitor.  I suspected, but was never able to pin it to 
> a radeon bug interacting with a 7500 M7 card.

Do you still have this file ? I'd like to try to find out what went
wrong and possibly fix it.

> I recently obtained this xorg.file from Marius Gedminas on the Thinkpad 
> mailing list.  So far MergedFB seems to work as advertised.

It seems ... but has significant bugs & issues.

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