dual head radeon -- again

[Mike A. Harris]

On Tue, 16 Mar 2004, Mark wrote:

>> >This is the 3d OS install in about 8 months on this machine and the 3d
>> >struggle to get the dual head display working properly.  This is a fedora
>> >x86_64 install with XFree86 rpm=4.3.0-55.
>>
>> I presume "3d" above means "third" and not really "3D" as in 3D
>> graphics, because dualhead and 3D acceleration are incompatible
>> with each other.
> 
>Not with the newer DRI drivers. They added support for MergedFB to the Radeon 
>Driver. This is similar to way FireGl Drivers work.

I believe you're talking about experimental development drivers
from DRI-CVS or somewhere else, however I am talking about
officially released XFree86.org drivers that come directly with
XFree86, but more specifically I mean the Red Hat radeon driver,
which has many additional bug fixes and support enhancments 
above what is in stock XFree86 4.3.0.

Red Hat does not ship nor support the DRI-CVS radeon driver which
has mergedfb support.


[SNIP]
>This does work with Fedora Core 1. It appears that the Radeon
>Man Page needs to be updated. Hint, Hint.

Red Hat has never shipped a Radeon driver in any release of
XFree86 which supports MergedFB.  I personally maintain the Red
Hat radeon driver, so I'm rather sure that this is the case.

;o)

Since our driver does not have mergedfb support, there is no 
reason for the manpage to be patched to document an option that 
our driver does not ship with.

For further information on Radeon Merged Framebuffer support,
please refer to the official upstream bugzilla tracker on this
issue:

	http://bugs.xfree86.org/show_bug.cgi?id=314


Official Red Hat support for mergedfb in the radeon driver will 
probably not happen until there has been an official upstream 
X11 release which contains mergedfb support for Radeon.  Once 
that is available, it will be incorporated into a future release 
of Fedora Core, including the manpages.  ;o)

For the time being however, our manpages document only what is
shipped with the operating system.

Hope this helps clarify any confusion from my previous message.

Take care,
TTYL


-- 
Mike A. Harris       ftp://people.redhat.com/mharris
OS Systems Engineer - X.org X11 maintainer - Red Hat