[Nouveau] [Bug 99400] [nouveau] garbled rendering with glamor on G71

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=99400

--- Comment #29 from Olivier Fourdan <fourdan at xfce.org> ---
(In reply to Ilia Mirkin from comment #28)
> OK, this weston stuff is a no-go. No way to run it against a specific dri
> card without intensive udev work (which I have no interest in learning), and
> apparently won't even let me start without some env vars (XDG_RUNTIME_DIR,
> perhaps others) after I tried starting it under X.

You need Xwayland, and therefore a Wayland compositor to connect to. But
Xwayland can run standalone (within a Wayland compositor) so once/if you can
get a Wayland compositor to run, you could run Xwayland from there and
(hopefully) reproduce, e.g.:

    Xwayland :30 &
    DISPLAY=:30 gtk-demo

But the requirement is to have a Wayland compositor so that Xwayland can run.

Weston is not the only Wayland compositor, apart from GNOME, there are other
smaller Wayland compositors such as sway (http://swaywm.org/) which can run
nested as well (so you can test from an existing X11 session), but I haven't
played much with those.

> So... I can't repro with the given instructions (because I can't follow the
> instructions successfully). Perhaps there are other instructions that
> reproduce the issue? Does Xephyr -glamor reproduce the issue? Something else
> that I can run?

Unfortunately no, "Xephyr -glamor" does not reproduce the issue, which makes
things even more confusing, admittedly.

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