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RE: [linux-dell-laptops] Re: 1600x1200 UXGA / NVidia on Mandrake 9.0?

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  • Mcleod, Ian
    Option UseEdidFreqs 1 Option BackingStore 1 What are these lines for?
    Message 1 of 5 , Oct 1, 2002
      Option "UseEdidFreqs" "1"
          Option "BackingStore" "1"
       
       
      What are these lines for? 
    • John Britton
      Option UseEdidFreqs boolean This option causes the X server to use the HorizSync and VertRefresh ranges given in a display device s EDID, if any. EDID
      Message 2 of 5 , Oct 2, 2002
        Option "UseEdidFreqs" "boolean"
        This option causes the X server to use the HorizSync
        and VertRefresh ranges given in a display device's EDID,
        if any. EDID provided range information will override
        the HorizSync and VertRefresh ranges specified in the
        Monitor section. If a display device does not provide an
        EDID, or the EDID doesn't specify an hsync or vrefresh
        range, then the X server will default to the HorizSync
        and VertRefresh ranges specified in the Monitor section.

        EDID is a feature of some displays which allows the display to tell X what its
        specs. are


        Backing Store

        One of the features that distinguishes various window systems is how they
        handle the issue of backing store. When part of a window that was previously
        not visible is exposed, there are two basic approaches that a window system
        can take. Some keep track of the current contents of all windows and
        automatically repair any damage to their visible regions (retained windows).
        This saved information is known as the backing store. Others simply report
        the damage to the program that created the window and leave repairing the
        visible region to the program (non-retained windows).

        Note: Using BackingStore "1" (i.e. on) can degrade your X performance - I use
        it because it improves the performance of a finite element package I use day
        to day



        On Wednesday 02 October 2002 00:22, Mcleod, Ian wrote:
        > Option "UseEdidFreqs" "1"
        > Option "BackingStore" "1"
        >
        > What are these lines for?

        --
        Centre for Bioengineering,
        Trinity College,
        University of Dublin,
        Ireland
        www.biomechanics.ie
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