I'm using debian etch xorg 7.1 with the video driver xserver-xorg-video-mga/etch uptodate 1:1.4.4.dfsg.1-2 Setting gamma correction on 1st screen works on second screen nothing happens on setting gamma. No errors in .xsession-errors or xorg-log. The card is a Matrox Graphics, Inc. G400/G450 rev 133 with 2 D-Sub connectors.
*** This bug has been marked as a duplicate of bug 2523 ***
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