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Bug 96999 - xinerama and Matrox G450 screen corruption
xinerama and Matrox G450 screen corruption
Product: Red Hat Linux
Classification: Retired
Component: XFree86 (Show other bugs)
i386 Linux
medium Severity medium
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Assigned To: Mike A. Harris
David Lawrence
Depends On:
  Show dependency treegraph
Reported: 2003-06-08 09:50 EDT by gary parker
Modified: 2007-04-18 12:54 EDT (History)
0 users

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Fixed In Version:
Doc Type: Bug Fix
Doc Text:
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Clone Of:
Last Closed: 2004-09-01 13:05:37 EDT
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Description gary parker 2003-06-08 09:50:23 EDT
From Bugzilla Helper:
User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows 98; Win 9x 4.90)

Description of problem:
I am running redhat 8.0.
I have a G450 quad head card.
With Xfree86 and xinerama option I can only get the first head output to work 
correctly. The other heads display a corrupted image. An xterm can be dragged 
from first display across to a second but the resulting image is corrupted on 
2nd screen.
I can only get the 2nd, etc to display anything if I explictly set the VideoRam 
option of the Device section.
Are there any special options I should set. It looks as though its almost 
working but for some magic option I'm missing.

I seem to have all the usual settings in XF86Config that
appear on various web pages for xinerama.
Is it important that I set option MGASDRAM instead of VideoRam?
Is their a magic Xaa option?
I have obtained latest mga_drv.o from matrox.

Version-Release number of selected component (if applicable):
standard version that came with personal redhat CD

How reproducible:

Steps to Reproduce:
1.Setup XF86Config for xinerama and 4 heads

Expected Results:  Should have all heads appear as single graphics logical 

Additional info:
Comment 1 Mike A. Harris 2004-09-01 13:05:37 EDT
G450 quad-head isn't supported by the mga driver from what I can
see in the sources.  You'll probably have to use the proprietary
unsupported Matrox driver.

Setting status to "NOTABUG"

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