[PATCH] drm/mgag200: Increase bandwidth for G200se A rev1

[Roger Sewell]

Thomas, Jocelyn,

I just thought I'd let you know that it occurred to me that, now I
understood the workings of the mgag200 module better, I might be
able to get an even higher screen resolution than before.

So I relaxed the limits of this chip that returns unique_rev_id=1 to be
those that would have applied if it had had unique_rev_id=3, and set a
/etc/X11/xorg.conf.d/20-screen.conf file to contain the stuff below, and
used Settings->Display to pick 1920x1080 mode - and sure enough I get
perfect 1920x1080 at 60Hz screen resolution.

Interesting. Thomas, I owe you thanks for introducing the bug/feature we
have been discussing which has eventually led to my realising a big
improvement in my display. Also to all those who support open-source
software, without which a user would not be able to taylor his system to
match what he needs so well.

With best wishes,
Roger.



Section "Monitor"
        Identifier      "My monitor"
        Modeline "1440x900" 106.50  1440 1520 1672 1904  900 903 909 934 -hsync +vsync
        Modeline "1280x800"  83.50  1280 1352 1480 1680  800 803 809 831 +hsync -vsync
        Modeline "1280x720"  74.44  1280 1336 1472 1664  720 721 724 746 -hsync +vsync
        Modeline "1920x1080"  148.50  1920 2008 2056 2200  1080 1084 1089 1125 +hsync +vsync
EndSection
Section "Screen"
	Identifier	"Builtin Default mga Screen 0"
	Device	"Builtin Default Device 0"
        Monitor "My monitor"
        SubSection "Display"
             Virtual 1440 900
             Modes "1440x900"
        EndSubSection
EndSection
Section "ServerLayout"
	Identifier	"Builtin Default Layout"
	Screen	"Builtin Default mga Screen 0"
EndSection