[Xorg] MGA patches

Ryan Underwood nemesis-lists at icequake.net
Wed Jul 21 12:31:20 PDT 2004


I have two patches in the XFree86 bug tracker which seem to be meeting
with disinterest on the "other side".  I was wondering if anyone over
here had any comments or would like to merge them.  I'm getting a little
tired of hand applying them to my systems.


This is a simple patch which corrects the following misbehavior.  If a
dualhead configuration is used in XF86Config, but dualhead is actually
disabled for some reason (usually due to an error during initialization
of the second head), then any video activity will immediately segfault
the server in MGASwapContextShared.  Well, if dualhead isn't actually
being used, then there is no pointer to the second screen, so we should
use MGASwapContext instead.


This patch is more comprehensive, and adds support for the G-series
Maven chip.  Through the Maven, it enables DDC and DPMS on the second
head of a G400 as well as TV cable detection.  This is the first steps
towards removing the dependency on the mga HAL library; from here we
will have to figure out how to do mode setup through the Maven chip, but
the current features seem compelling enough to me to request it to be
included as-is.

I've been running both these patches on my system for at least a month
without any problems.  However, I seem to have some problems getting
other people to test them.


Ryan Underwood, <nemesis at icequake.net>
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