4K monitors?

[poma]

On 05.07.2014 00:48, don fisher wrote:
> On 07/04/14 14:10, Tom Horsley wrote:
>> On Fri, 04 Jul 2014 22:56:06 +0200
>> poma wrote:
>>
>>> "Screen size: 16.0 cm x 9.0 cm (7.23 inches, aspect ratio 16/9 = 1.78)"
>>> is a known issue for some of the Samsung Smart(?) TVs, so it is best to contact Samsung directly.
>>
>> It is not only a known issue, it is perfectly legit for Samsung
>> to do that according to the CEA specs they follow. The problem
>> comes from moron programmers who persist in believing that
>> EDID is gospel. New crops of these programmers seem to spring
>> up with great regularity.
>>
>> Anyway, I've thwarted them all now - I've actually provided
>> an EDID that meets their expectations. Maybe they won't
>> discover any way to break that :-).
>>
> I would like to pose I hope a simple question. If you desire something
> different than the default computed from the EDID data, what can you do.
> Unix variants have always had a configuration file with preferences that
> allow one to override the default. I think you said you made your own
> EDID. Where did you put it so the system pays attention. When the Gnome
> display manager configures the monitor, where does it put that data?
> Where in the process is the EDID read. I do not use Gnome and am looking
> for a way to get back to the flexibility xorg.conf provided. When I
> tried to run X -configure it referred me to "Please consult the Fedora
> Project support at http://wiki.x.org" web page that described the old
> xorg.conf setups. Fedora is becoming too opaque to be useful:-(
>

Fedora only use what is already generally defined.

For the umpteenth time, :)

https://www.kernel.org/doc/Documentation/kernel-parameters.txt
drm_kms_helper.edid_firmware=[<connector>:]<file>
		Broken monitors, graphic adapters and KVMs may
		send no or incorrect EDID data sets. This parameter
		allows to specify an EDID data set in the
		/lib/firmware directory that is used instead.
		Generic built-in EDID data sets are used, if one of
		edid/1024x768.bin, edid/1280x1024.bin,
		edid/1680x1050.bin, or edid/1920x1080.bin is given
		and no file with the same name exists. Details and
		instructions how to build your own EDID data are
		available in Documentation/EDID/HOWTO.txt. An EDID
		data set will only be used for a particular connector,
		if its name and a colon are prepended to the EDID
		name.

https://www.kernel.org/doc/Documentation/EDID/HOWTO.txt


poma