4K monitors?

[Ahmad Samir]

On 04/07/14 00:26, Tom Horsley wrote:
> On Thu, 03 Jul 2014 15:11:34 -0700
> don fisher wrote:
>
>> Can you tell me where documentation exists on how to set up the XWindow
>> system. I used /etc/X11/xorg.conf in the past, but that all appears to
>> have been replaced by something I cannot find.
>
> You don't, it "just works" (except when it doesn't). All the info
> is supposed to come from the EDID reported by the monitor. Any
> tweaks are done at runtime via xrandr, xinput, etc. (which may or
> may not be supported by some GUI setting tool that (maybe) remembers
> and reproduces the settings via things like the gnome
> settings daemon).
>
> On my system at home, I have to override the EDID info to make
> the system believe I have a 47 inch monitor and not a 7 inch
> monitor with incredibly dense resolution :-). This has all

[...]

If you're using GNOME, did you try setting "org.gnome.desktop.interface 
scaling-factor" to 1? there were some problems with gnome-shell and 
hiDPI issues.

(I am not sure if those issues were fixed by subsequent updates to 
gnome-shell).

[....]

-- 
Ahmad Samir