On Sat, Mar 17, 2001 at 12:10:51PM -0800, Bill Wohler wrote:
> I just upgraded to X v4 (woody) and selected the mga driver for my
> Matrox Millenium G200. I have an NEC MultiSync 6FG (21") monitor. I
> now have two problems:
>
> 1. Large margins around the screen.
> 2. Incredible flicker.
>
> At 1280x1024, there is now a large margin around the screen: 1 cm
> top and bottom, 2 cm right and left. xvidtune can't make it bigger.
> Is xvidtune still used in v4 (since I noticed that the mode lines
> are cheerfully no longer in the configuration) or is there a newer
> tool that I can use to adjust the size? I don't really want to
> adjust the monitor size (much) since the size was perfect under v3
> and the size in the console is fine.
>
> Also note that my 1024x768 screen is also small; however, my 800x600
> screen extends past the edges of the monitor.
>
> Also, there is now noticeable flicker which is giving me quite a
> headache. I've used the same horizontal and vertical refresh rates
> that were present in v3, but I see in the log below that I'm only
> pulling 60 Hz, rather than 75 or higher. Suggestions?
>
> I also noted that mga_hal failed to load. Is this a problem?
>
> Are there any other tools besides SuperProbe that can be used to
> debug/adjust these things?
>
> Thanks for any help you all can provide.
>
> Here's the log:
>
[snip]
> (==) MGA(0): Using gamma correction (1.0, 1.0, 1.0)
> (==) MGA(0): Min pixel clock is 12 MHz
> (==) MGA(0): Max pixel clock is 250 MHz
> (II) MGA(0): NEC MultiSync 6FG: Using hsync range of 27.00-79.00 kHz
> (II) MGA(0): NEC MultiSync 6FG: Using vrefresh range of 55.00-90.00 Hz
Looks like X thinks your monitor isn't fast enough. You can set the
monitor info in /etc/X11/XF86Config. You'll have to find out if your
monitor will support higher ranges. For instance, my 17" monitor
supports these:
Section "Monitor"
Identifier "Generic Monitor"
HorizSync 30-95
VertRefresh 50-180
EndSection
Notice the upper end of the ranges are substantially higher. So with
same video card, but different monitor settings, I can get up to:
1600x1200@75Hz (which is way too high [small] for my tastes). If it
supported higher ranges before, it will support them again.
Note: I don't know what that mga_hal is about (maybe for a different
Matrox card...).
--
Eric G. Miller <egm2@jps.net>
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