How can I exclude the X default mode in RandR ?

[Alex Deucher]

On 3/24/09, GordonYuan at viatech.com.cn <GordonYuan at viatech.com.cn> wrote:
> 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.
>

I think user defined modes should have the M_T_USERDEF flag set.

Alex


>  Best wishes,
>  Gordon
>
>  -----Original Message-----
>  From: xorg-bounces at lists.freedesktop.org [mailto:xorg-bounces at lists.freedesktop.org] On Behalf Of Alex Deucher
>  Sent: 2009年3月24日 21:47
>  To: Gordon Yuan
>  Cc: xorg at freedesktop.org
>  Subject: Re: How can I exclude the X default mode in RandR ?
>
>  On 3/24/09, GordonYuan at viatech.com.cn <GordonYuan at 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:alexdeucher at gmail.com]
>  >  Sent: 2009年3月23日 21:54
>  >  To: Gordon Yuan
>  >  Cc: xorg at freedesktop.org
>  >  Subject: Re: How can I exclude the X default mode in RandR ?
>  >
>  >  On 3/23/09, GordonYuan at viatech.com.cn <GordonYuan at 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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