Alex,
    Thanks for your kind help.
    But it won't support the user-define mode lines, because they are also 
excluded.
        For example,
    Section "Monitor"
                ....
                Modeline "1024x768_60.00"   .......
        EndSection
        The mode "1024x768_60.00" will be filtered. It may be a limitation. We 
can't have a method to make the best of both worlds.

Best wishes,
Gordon

-----Original Message-----
From: xorg-boun...@lists.freedesktop.org 
[mailto:xorg-boun...@lists.freedesktop.org] On Behalf Of Alex Deucher
Sent: 2009年3月24日 21:47
To: Gordon Yuan
Cc: x...@freedesktop.org
Subject: Re: How can I exclude the X default mode in RandR ?

On 3/24/09, gordony...@viatech.com.cn <gordony...@viatech.com.cn> wrote:
> Alex,
>     Thanks!
>         Because HDMI doesn't support GTF timing, the X default modes are all 
> excluded on XServer 1.6.
>     I still have no idea how to filter them on XServer 1.5.x. I can filter 
> certain mode, but I can't filter all the X default modes.
>

In your mode_valid() function, compare the mode passed in to the modes
in the edid.  if it doesn't match, return MODE_BAD.

Alex

>  Best wishes,
>  Gordon
>
>
>  -----Original Message-----
>  From: Alex Deucher [mailto:alexdeuc...@gmail.com]
>  Sent: 2009年3月23日 21:54
>  To: Gordon Yuan
>  Cc: x...@freedesktop.org
>  Subject: Re: How can I exclude the X default mode in RandR ?
>
>  On 3/23/09, gordony...@viatech.com.cn <gordony...@viatech.com.cn> wrote:
>  >
>  >
>  >
>  >
>  > Dear all,
>  >
>  >     In RandR, X will include the default mode (xf86DefaultModes) in the 
> mode
>  > list. But it’s not useful for some devices (e.g. TV or HDMI). How can I
>  > delete these modes from the mode list? I don’t want to output these modes 
> if
>  > I press the command “xrandr -q”.
>  >
>  >     It’s X behavior. It seems that driver can’t change the logic.
>  >
>  >     Thanks!
>
>  xserver 1.6 and newer only add the default modes if the edid has the
>  continuous frequency bit set.  If you don't want to add certain modes,
>  you can filter what gets added in your driver's mode_valid() function.
>
>  Alex
>
>
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