Matrox G450 (Workaround)
Tuc at T-B-O-H.NET
ml at t-b-o-h.net
Mon Oct 22 21:14:01 PDT 2007
Forwarded on behalf of Gary Kline (Sig at bottom).
My posting to the xorg list *after* I was subscribed. This is
timestamped, 15oct07, 17:11:29::
Until I moved up to xorg-7.2 on my Dell Dim8200, my old video
card worked fine. Then I had to switch to "vesa" to be able to use
the computer. I thought the video card was going bad, so bought
the new G450. Same problem. I checked your FAQ and postings and
found nothing about my symptoms. Thus this email.
The problem with defining Driver "mga" is that when I exec X11,
only the very top and very bottom of my CRT have any light.
In between is a very dark band. I have other computers running
on this tube via KVM switch so the tube is fine.
I would appreciate any suggestions you guys may have regarding
what to do now. Is there any other driver that will give me at
least 1280x1024 with the G450?
thanks in advance,
Finally, after SIX days and a suggestion from R. Smith in
Holland, I was able to use xgamma at it's lowest range to
brighten my display from dingy-grey to white. (The range for
xgamma is 0.100 to 10.0. After rebooting my Dell Dimension-8200
for the 37th time, I set mmy xorg.conf back to "mga", exec'd
Gnome, and the screen came up with it's dull, dark, feeble grey.
I tried Roland Smith's idea of xgamma -gamma <f>, and after a few
tries, found that xgamma -gamma 0.100 worked! Now the G450 works
properly at alll resolutions.
This is, I'm guessing, a bug somewhere in xf86-video-mga-1.9.100
driver code. My CRT is flawless, and my other three KVM ports
display correctly. I haven't written a driver since around 1991,
so I hope this data point helps the xorg wizards.
Gary Kline kline at thought.org www.thought.org Public Service Unix
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