[Nouveau] where to report modesetting DDX bug?

[Felix Miata]

Video and input drivers Subgroups and projects on gitlab does not list modesetting
DDX, presumably because it's not packaged separately from the server. Where's the
right place to report a modesetting DDX bug that manifests only on an NVidia GPU?
Directly against the server https://gitlab.freedesktop.org/xorg/xserver?

Here are some particulars:
How can I tell whether this should be reported to kernel tracker or to freedesktop
tracker as driver or server problem? HDMI output on GT218 10de:0a65 GPU is limited
to 1920x1200. When connected to 2560x1440 display, vttys are supported at
display's supported 1920x1080 mode, but X with modesetting DDX puts display in
unsupported mode (functionally asleep) regardless of various attempts to force
1920x1080 at 60 or 1600x900 at 60, while with nouveau DDX, or 1920x1200 display, or
2560x1440 display with Dual-link DVI cable, display behavior is as expected.

openSUSE 15.1/kernel 4.12.14	OK
openSUSE 15.2/kernel 5.3.18	bad
Tumbleweed/kernel 5.4.14	bad
Debian Buster/kernel 4.19.x	OK
Fedora 31/5.5.5 kernel		bad

http://fm.no-ip.com/Tmp/Linux/Xorg/xorg.0.log-gt218-stw-modesetting-OOR-0x1e
http://fm.no-ip.com/Tmp/Linux/Xorg/gt218-dmesg-stw.txt
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 Team OS/2 ** Reg. Linux User #211409 ** a11y rocks!

Felix Miata  ***  http://fm.no-ip.com/