probing the supported resolution list

probing the supported resolution list

[Alessio Sangalli]

Hi, is there a standard way for a userspace program to "probe" the 
supported display sizes/refresh rates/bit depths? The display I'm 
writing a driver for only supports a few specific resolutions, and I'm 
wondering how a userspace program can discover those.

Thank you
Alessio



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Re: probing the supported resolution list

[Krzysztof Helt]

On Thu, 01 Oct 2009 00:41:41 -0700
Alessio Sangalli <alesan@manoweb.com> wrote:

> Hi, is there a standard way for a userspace program to "probe" the 
> supported display sizes/refresh rates/bit depths? The display I'm 
> writing a driver for only supports a few specific resolutions, and I'm 
> wondering how a userspace program can discover those.
> 

I am not aware of such a probe function.

E.g. the xorg fbdev driver just tries to select list of defined resolutions and 
select only the available ones. If your list of resolutions and depths is limited 
to few entries you can try this approach as well.

Regards,
Krzysztof


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