4K monitors?

[poma]

On 04.07.2014 23:06, Tom Horsley wrote:
> On Fri, 04 Jul 2014 22:58:27 +0200
> lee wrote:
>
>> Huh?  You can't just specify a resolution in xorg.conf anymore?
>
> Nope. After proudly ignoring EDID for 20 years, linux switched
> gears completely. Now it basically pays no attention to anything
> you have to say in xorg.conf (though you can occasionally
> put little fragments of things it is willing to look at in
> the xorg.conf.d directory for maybe doing things like tweaking
> options in the video driver).
>

Section "Device"
     Identifier  "card"
EndSection

Section "Monitor"
     Identifier  "monitor"
     Option      "PreferredMode" "<xres>x<yres>"
EndSection

Section "Screen"
     Identifier  "Default Screen"
     Device      "card"
     Monitor     "monitor"
EndSection


"<xres>x<yres>" is one from the built-in set of VESA standard modes, which is normally sufficient.
However, if someone needs a non-standard mode, it can be supplied as 'ModeLine' as part of the Section "Monitor".
There may be additional directives, but the point is this works with a broken EDID.
Therefore this is another solution.


poma