Freeze at desktop manager startup (tested with sddm and lightdm).

Bisected as

commit 1cec049d4db1c4dcd121bad17df4a77273dd9bb1
Author: Julien Isorce <jisorce@oblong.com>
Date:   Tue Apr 23 14:28:48 2019 -0700

    radeonsi: implement resource_get_info

    Re-use existing si_texture_get_offset.

    Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=110443
    Signed-off-by: Julien Isorce <jisorce@oblong.com>
    Reviewed-by: Marek Olšák <marek.olsak@amd.com>

commit a3c202de0a963c0562796cf75e3a9b3eedf1afad
Author: Julien Isorce <jisorce@oblong.com>
Date:   Tue Apr 23 14:26:33 2019 -0700

    gallium: add resource_get_info to pipe_screen

    Generic plumbing.

    Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=110443
    Signed-off-by: Julien Isorce <jisorce@oblong.com>
    Reviewed-by: Marek Olšák <marek.olsak@amd.com>

GPU: RX 480
OS: OpenSuse Tumbleweed