[PATCH] modesetting: Add common 16by9 and 16by10 resolutions to mode list

[Adam Jackson]

On Tue, 2017-08-22 at 13:20 -0500, Michael Cronenworth wrote:
> Related: https://bugzilla.redhat.com/show_bug.cgi?id=1339930

Nak, at least in this form. If these are really common modes then the
DMT spec or similar should define real timings for them, and we should
use those timings rather than pretend GTF can handle it. For example:

> +    { 15360, 8640 },

hyoscyamine:~% gtf 15360 8640 60

  # 15360x8640 @ 60.00 Hz (GTF) hsync: 536.16 kHz; pclk: 11675.42 MHz
  Modeline "15360x8640_60.00"  11675.42  15360 16824 18568 21776  8640 8641 8644 8936  -HSync +Vsync

An 11GHz dotclock is slightly unrealistic.

Ideally xf86DefaultModes would be replaced by DMTModes (and the latter
synced with a newer version of that list, eg from drm), because then
you wouldn't have needed to change the ms driver at all.

- ajax