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Two questions related to monitor settings. I tend to use the SaX2 tool under SuSE, but I can obviously edit XF86Config if necessary.
o Firstly, why is the highest colour depth that I can select 24 rather than 32 bit? (I don't know if it's relevant but I'm using the latest nvidia drivers, and my card is a Gainward FX5900/1100XT Golden Sample.)
> o Secondly, why does it only ask for a _range_ of horizontal and vertical frequencies? (How does it work
> out the highest frequency it can use for a given resolution from those values?)
> I use 1024*768 (because my monitor can only do 60Hz at 1280*1024), and I want to make sure it uses the
> highest possible refresh rate for my monitor at that res, 85Hz. How do I go about this?
EDIT: Just found how you choose a frequency setting in KDE under Control Center/Peripherals/Display. Sorry! Should have looked harder. First question still stands, I think.
Last edited by ianunderwood; 07-28-2004 at 06:57 PM.
"o Firstly, why is the highest colour depth that I can select 24 rather than 32 bit? (I don't know if it's relevant but I'm using the latest nvidia drivers, and my card is a Gainward FX5900/1100XT Golden Sample.)"
The answer is related to how much video memory you have. The color depth means how many bits are used to describe each pixel's color. You also set the number of pixels with the resolution, in this case 1024 x 768 = 786432 pixels. So you have enough video memory to display 786432 pixels at 24 bits per pixel but not enough memory for 32 bits per pixel. You can configure your monitor to display more colors at a lower resolution or fewer colors at a higher resolution. If you want more colors at the same or higher resolution you need more video memory.
But I _can_ (and do) display at 32 bit in windows at any resolution that my monitor supports (including 1024*768, but right up to 1280*1024). Besides, I have 128MB of video RAM, so I doubt it can be lack of memory. All games I run under Linux (Neverwinter Nights, Unreal Tournament 2004, Quake III, various games under WineX) will happily go into 32 bit mode.
EDIT: I've just had another go under SaX2. It doesn't matter how low I set my resolution; the list of available colour depths only goes up to 24 bit.
As a side point, if you multiply 786432 by 32, divide it by 8 (to get bytes), then by 1024 to get KB, and finally 1024 again to get MB, you get 3 -- i.e. 3MB! So I have over 40 times the required memory, I think.
Last edited by ianunderwood; 07-29-2004 at 04:10 AM.
"I have 128MB of video RAM, so I doubt it can be lack of memory."
You are right. Video memory is probably not your problem. You might be able to fix the problem by using sax2 in expert mode. Go to monitor and click on properties and then 'expert' tab to enter your monitor specifications by hand. You will need to know your screen height and width in millimeters to use the expert mode. Try entering 32 bit in expert mode.