sway and libinput initialization failed

Sun May 26 14:09:55 UTC 2019

Hi,

I am installing new FreeBSD 12-RELEASE on a system with Vega 64 graphics 
and I thought I will give wayland a try. When searching the internet, 
this forum, or the FreeBSD wiki there is lots of information that is 
quickly becoming outdated. So I am not sure which guide I should follow. 
My immediate problem is that libinput fails, see last few lines:

sway -d

(...lots of lines, I will post the most important ones...)

2019-05-26 13:37:36 - [sway/main.c:151] FreeBSD somedummyserv.com 
12.0-RELEASE-p4 FreeBSD 12.0-RELEASE-p4 GENERIC  amd64
...
2019-05-26 13:37:36 - [sway/server.c:40] Preparing Wayland server 
initialization
2019-05-26 13:37:36 - [backend/session/direct-freebsd.c:159] Using tty 
/dev/ttyv8
2019-05-26 13:37:36 - [backend/session/direct-freebsd.c:248] 
Successfully loaded direct session
2019-05-26 13:37:36 - [backend/backend.c:192] Found 1 GPUs
2019-05-26 13:37:36 - [backend/drm/backend.c:152] Initializing DRM 
backend for /dev/dri/card0 (amdgpu)
2019-05-26 13:37:36 - [backend/drm/drm.c:62] Using atomic DRM interface
2019-05-26 13:37:36 - [backend/drm/drm.c:177] Found 6 DRM CRTCs
2019-05-26 13:37:36 - [backend/drm/drm.c:86] Found 12 DRM planes
2019-05-26 13:37:36 - [backend/drm/drm.c:150] (0 overlay, 6 primary, 6 
cursor)
2019-05-26 13:37:36 - [render/egl.c:172] Using EGL 1.5
...
2019-05-26 13:37:36 - [render/egl.c:174] EGL vendor: Mesa Project
2019-05-26 13:37:36 - [render/egl.c:117] Supported dmabuf buffer 
formats: AR24 XR24
2019-05-26 13:37:36 - [render/gles2/renderer.c:546] Using OpenGL ES 3.2 
Mesa 18.3.2
2019-05-26 13:37:36 - [render/gles2/renderer.c:547] GL vendor: X.Org
...
2019-05-26 13:37:36 - [backend/noop/backend.c:51] Creating noop backend
2019-05-26 13:37:36 - [sway/main.c:362] Starting sway version 1.1-rc2
2019-05-26 13:37:36 - [sway/server.c:54] Initializing Wayland server
...
2019-05-26 13:37:36 - [sway/config.c:391] Loading config from 
/home/g/.config/sway/config
...
2019-05-26 13:37:36 - [sway/server.c:204] Starting backend on wayland 
display 'wayland-0'
2019-05-26 13:37:36 - [backend/drm/drm.c:1077] Scanning DRM connectors
2019-05-26 13:37:36 - [backend/drm/drm.c:1140] Found connector 'DP-1'
...
2019-05-26 13:37:36 - [backend/drm/drm.c:1140] Found connector 'HDMI-A-1'
...
2019-05-26 13:37:36 - [backend/drm/drm.c:1293] Requesting modeset for 'DP-1'
2019-05-26 13:37:36 - [sway/desktop/output.c:609] New output 
0x80e8f1400: DP-1
2019-05-26 13:37:36 - [backend/drm/drm.c:544] Modesetting 'DP-1' with 
'1920x1080 at 60000 mHz'
...
2019-05-26 13:37:36 - [backend/drm/drm.c:1293] Requesting modeset for 'DP-3'
2019-05-26 13:37:36 - [sway/desktop/output.c:609] New output 
0x80e8f1a00: DP-3
2019-05-26 13:37:36 - [backend/drm/drm.c:544] Modesetting 'DP-3' with 
'3840x1600 at 59994 mHz'
...
2019-05-26 13:37:36 - [backend/libinput/backend.c:84] libinput 
initialization failed, no input devices
2019-05-26 13:37:36 - [backend/libinput/backend.c:85] Set 
WLR_LIBINPUT_NO_DEVICES=1 to suppress this check
2019-05-26 13:37:36 - [backend/multi/backend.c:32] Failed to initialize 
backend.
2019-05-26 13:37:36 - [sway/server.c:206] Failed to start backend
...
2019-05-26 13:37:36 - [backend/drm/drm.c:1444] Emitting destruction 
signal for 'DP-1'
...
2019-05-26 13:37:36 - [backend/drm/drm.c:1444] Emitting destruction 
signal for 'DP-3'
...
2019-05-26 13:37:36 - [sway/main.c:400] Shutting down sway
2019-05-26 13:37:36 - [main.c:521] Missing a required Wayland interface

What I did so far was pretty much installing drm-kmod and sway. I 
followed this wiki https://wiki.freebsd.org/Graphics#AMD_Graphics but I 
skipped the part where they ask to set hw.syscons.disable=1. Could this 
be the problem? I understood that this is needed to load the amdgpu 
driver and is not related to libinput. The amdgpu driver seems to be 
working fine, e.g. during booting the standard display switches to a 
more compact one (meaning more lines fit the screen).

When I set WLR_LIBINPUT_NO_DEVICES to 1, as suggested, sway seems to be 
starting fine, i.e. both screens show the SWAY background, dates are 
displayed, etc. But of course neither mouse no keyboard work. My 
motherboard is Asrock X470 TaiChi Ultimate and mouse and keyboard are 
connected through USB3.

Note that the mouse works fine in the text mode (just after FreeBSD is 
booted into the command line mode).

Any help would be greatly appreciated.

GrzegorzJ