How do I use kscreen?

Nikos Chantziaras realnc at
Sat Nov 8 16:37:52 GMT 2014

On 06/11/14 10:42, Duncan wrote:
> Normally that "something" would be the full EDID info from the monitor
> itself.

I disabled the EDID in my xorg.conf (Option "UseEdidFreqs" "FALSE") and 
defined my own modes because I need refresh rates for 24p, NTSC and PAL 
content, which are not provided by computer monitor EDIDs. It's usually 
only TVs that have these.

And indeed the NVIDIA driver doesn't use the EDID:

   NVIDIA(0): Not using HorizSync/VertRefresh ranges from the EDID for
   NVIDIA(0):     display device Samsung SyncMaster (DFP-3) (Using EDID
   NVIDIA(0):     frequencies has been disabled on all display devices.)

This is needed, because otherwise it's not possible to add custom modes, 
at least with the NVIDIA driver.

I have lots of modelines defined, but my default mode in xorg.conf is 
set to 1920x1080:

   SubSection "Display"
       Depth  24
       Modes  "1920x1080 at 60"

And this works just fine for X, since KDM is using 1920x1080 (or 
whatever I make the default in the "Display" subsection.) It's only the 
desktop that seems to ignore that setting now. In the previous version, 
it was picking that default up without problems. Fortunately, the new 
kscreen system remembers my previous choice, so once I had set 1920x1080 
in the NVidia tool, the desktop remembered that for all future logins. 
Previously, all these settings were temporary and were lost after 
logging out.

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