On 10/8/2014 8:39 AM, Peter Gregory wrote:
> 
> The resolution should change on the display. If you get the message
> "xrandr: cannot find mode 1920x1080" where the 1920x1080 in this
> example is the mode you selected, that means that the DRM driver did
> not select it as an available resolution.

You can coerce the DRM's view of allowed resolutions using kernel
command line flags, including non-standard options.  I had to do this
for some small LCD panels that lied about their resolution in the EDID
(800x480 LCD that claimed it was full HD 720P):

http://blog.machinekit.io/2013/07/custom-hdmi-resolution.html

http://blog.machinekit.io/2013/06/force-beaglebone-black-hdmi-resolution.html

-- 
Charles Steinkuehler
[email protected]

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