(In reply to Diego Viola from comment #27)
> export LD_LIBRARY_PATH=3D/home/diego/mesa/lib
> export LIBGL_DRIVERS_PATH=3D/home/diego/mesa/lib/gallium
>=20
> So I assume this should make the X server pick the radeonsi_dri.so from
> /home/diego/mesa/lib/gallium right?

Doubtful, environment variables from the user shell aren't propagated to the
Xorg process for me (which makes it very mysterious how LIBGL_ALWAYS_SOFTWA=
RE=3D1
could make any difference...).

> Is there a way to verify beyond this which radeo=
nsi driver it's using?

sudo lsof | grep radeonsi_dri.so

(In reply to Diego Viola from comm=
ent #29)
> Mesa 19.0.0-devel (git-8daf5bb209)
>=20
> Which is the commit prior to the bad commit I mentioned above.
>=20
> Sadly xterm is still breaking as usual, the output disappears as I
> Shift+Page Up and nothing changed in that regard. :(

What if you install Mesa 18.3 system-wide?

(In reply to Diego Viola from comm=
ent #30)
> I can reproduce this on Fedora 29 (workstation),=
 [...]
(In reply to Diego Viola from comm=
ent #31)
> I can't reproduce it on Ubuntu 18.04.2 or 19.04 =
beta.

Please attach the outputs of glxinfo from Fedora and Ubuntu.