kms howto - is there one?

[Adam Jackson]

On Wed, 2010-03-17 at 18:48 -0400, Felix Miata wrote:

> # xrandr --output VGA1 --mode 1600x1200
> xrandr: cannot find mode 1600x1200

Which means there's not a 1600x1200 mode listed on that output.

> # xrandr --addmode UXGA 1600x1200
> xrandr: cannot find output "UXGA"

This attempts to add a mode named "1600x1200" to an output named UXGA.
You have no such output.

> # xrandr --addmode VGA1 1600x1200
> xrandr: cannot find mode "1600x1200"

Modes don't exist a priori.  Create the mode you want and then add it to
the appropriate output.

% gtf 1600 1200 60 | grep Mode
  Modeline "1600x1200_60.00"  160.96  1600 1704 1880 2160  1200 1201 1204 1242  -HSync +Vsync
% xrandr --newmode 1600x1200 $(gtf 1600 1200 60 | grep Mode | read a b c; echo $c)
% xrandr --addmode VGA1 1600x1200

Note that mode names have no semantic meaning.  They're just strings.

Use gtf(1) to generate mode timings for CRTs, and cvt(1) for LCDs.

- ajax
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 198 bytes
Desc: This is a digitally signed message part
Url : http://lists.fedoraproject.org/pipermail/test/attachments/20100319/3c42fb0d/attachment.bin