Re: [oe-core][PATCHv2 0/3] Display manager proposal for x11 and wayland

["Mathieu Dubois-Briand" <mathieu.dubois-briand@bootlin.com>]

On Tue May 6, 2025 at 12:47 AM CEST, rs wrote:
> From: Randolph Sapp <rs@ti.com>
>
> We've recently run into some issues with weston-init attempting to start
> Weston prior to all drm devices being registered. There's not really a
> good, scriptable mechanism to listen in to device registration events
> that works with the existing weston-init package. Well, at least one
> that doesn't involve polling files or introducing more dependency on the
> init system being used.
>
> I also see there is also a lot of scripting around starting X11,
> xserver-nodm-init, that (from my limited review) should experience the
> same issue.
>
> I'd like to introduce the following display manager for oe-core, emptty
> [1]. This display manager is, as described upstream, a "Dead simple CLI
> Display Manager on TTY". It supports both x11 and wayland sessions, with
> togglable build parameters to completely remove x11 and pam
> dependencies. It's licensed MIT, which shouldn't be an issue for any
> users. (It is written in Go, if you have opinions about that.)
>
> With this, both weston-init and the xserver-nodm-init packages can be
> re-tuned to leverage this display manager and simply add a user and
> emptty config for an autologin session. This can resolve the current
> behavior across init systems without additional scripting, and move some
> development out of this layer.
>
> This lists myself as a maintainer of emptty as well as xserver-nodm-init and
> xuser-account since these are currently unassigned and I've reworked them
> significantly here.
>
> Sorry for the delay on this series. I found a few bugs in emptty that I wanted
> to address before submitting this officially.
>
> [1] https://github.com/tvrzna/emptty
>

Ok, so I tried again to merge this patch, and I believe I've got new
errors:

RESULTS - xorg.XorgTest.test_xorg_running: FAILED (1.43s)
...
AssertionError: 1 != 0 : Xorg does not appear to be running

https://autobuilder.yoctoproject.org/valkyrie/#/builders/9/builds/1579
https://autobuilder.yoctoproject.org/valkyrie/#/builders/20/builds/1567
https://autobuilder.yoctoproject.org/valkyrie/#/builders/67/builds/1620
https://autobuilder.yoctoproject.org/valkyrie/#/builders/68/builds/1661
https://autobuilder.yoctoproject.org/valkyrie/#/builders/74/builds/1582
https://autobuilder.yoctoproject.org/valkyrie/#/builders/92/builds/1589


Traceback (most recent call last):
  File "/srv/pokybuild/yocto-worker/oe-selftest-armhost/build/meta/lib/oeqa/core/decorator/__init__.py", line 35, in wrapped_f
    return func(*args, **kwargs)
  File "/srv/pokybuild/yocto-worker/oe-selftest-armhost/build/meta/lib/oeqa/runtime/cases/weston.py", line 63, in test_wayland_info
    self.assertEqual(status, 0, msg='wayland-info error: %s' % output)
    ~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
AssertionError: 255 != 0 : wayland-info error: failed to create display: Connection refused

Traceback (most recent call last):
  File "/srv/pokybuild/yocto-worker/oe-selftest-armhost/build/meta/lib/oeqa/core/decorator/__init__.py", line 35, in wrapped_f
    return func(*args, **kwargs)
  File "/srv/pokybuild/yocto-worker/oe-selftest-armhost/build/meta/lib/oeqa/runtime/cases/weston.py", line 67, in test_weston_can_initialize_new_wayland_compositor
    existing_wl_processes = self.get_processes_of('weston-desktop-shell', 'existing')
  File "/srv/pokybuild/yocto-worker/oe-selftest-armhost/build/meta/lib/oeqa/runtime/cases/weston.py", line 32, in get_processes_of
    self.assertEqual(status, 0, msg='Retrieve %s (%s) processes error: %s' % (target, error_msg, output))
    ~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
AssertionError: 1 != 0 : Retrieve weston-desktop-shell (existing) processes error:


Traceback (most recent call last):
  File "/srv/pokybuild/yocto-worker/oe-selftest-armhost/build/meta/lib/oeqa/core/decorator/__init__.py", line 35, in wrapped_f
    return func(*args, **kwargs)
  File "/srv/pokybuild/yocto-worker/oe-selftest-armhost/build/meta/lib/oeqa/core/decorator/__init__.py", line 35, in wrapped_f
    return func(*args, **kwargs)
  File "/srv/pokybuild/yocto-worker/oe-selftest-armhost/build/meta/lib/oeqa/runtime/cases/weston.py", line 28, in test_weston_running
    self.assertEqual(status, 0, msg=msg)
    ~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^
AssertionError: 1 != 0 : Weston does not appear to be running   PID USER       VSZ STAT COMMAND

Traceback (most recent call last):
  File "/srv/pokybuild/yocto-worker/oe-selftest-armhost/build/meta/lib/oeqa/core/decorator/__init__.py", line 35, in wrapped_f
    return func(*args, **kwargs)
  File "/srv/pokybuild/yocto-worker/oe-selftest-armhost/build/meta/lib/oeqa/core/decorator/__init__.py", line 35, in wrapped_f
    return func(*args, **kwargs)
  File "/srv/pokybuild/yocto-worker/oe-selftest-armhost/build/meta/lib/oeqa/runtime/cases/weston.py", line 89, in test_weston_supports_xwayland
    self.assertEqual(status, 0, msg=msg)
    ~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^
AssertionError: 1 != 0 : xwayland does not appear to be running
...
RESULTS - weston.WestonTest.test_wayland_info: FAILED (0.51s)
RESULTS - weston.WestonTest.test_weston_can_initialize_new_wayland_compositor: FAILED (0.30s)
RESULTS - weston.WestonTest.test_weston_running: FAILED (0.78s)
RESULTS - weston.WestonTest.test_weston_supports_xwayland: FAILED (0.49s)

https://autobuilder.yoctoproject.org/valkyrie/#/builders/23/builds/1661
https://autobuilder.yoctoproject.org/valkyrie/#/builders/75/builds/1514


Traceback (most recent call last):
  File "/srv/pokybuild/yocto-worker/no-x11/build/meta/lib/oeqa/core/decorator/__init__.py", line 35, in wrapped_f
    return func(*args, **kwargs)
  File "/srv/pokybuild/yocto-worker/no-x11/build/meta/lib/oeqa/runtime/cases/weston.py", line 63, in test_wayland_info
    self.assertEqual(status, 0, msg='wayland-info error: %s' % output)
AssertionError: 255 != 0 : wayland-info error: failed to create display: No such file or directory
...
RESULTS - weston.WestonTest.test_wayland_info: FAILED (0.52s)

https://autobuilder.yoctoproject.org/valkyrie/#/builders/25/builds/1596
https://autobuilder.yoctoproject.org/valkyrie/#/builders/35/builds/1545
https://autobuilder.yoctoproject.org/valkyrie/api/v2/logs/2356168/raw_inline


2025-05-12 21:09:25,962 - oe-selftest - INFO -       ERROR: Nothing RPROVIDES 'weston-init' (but /srv/pokybuild/yocto-worker/reproducible/build/meta/recipes-graphics/wayland/weston_14.0.1.bb, /srv/pokybuild/yocto-worker/reproducible/build/meta/recipes-graphics/packagegroups/packagegroup-core-weston.bb RDEPENDS on or otherwise requires it)
2025-05-12 21:09:25,962 - oe-selftest - INFO -       weston-init was skipped: Recipe weston-init, package weston-init: system groupname "nopasswdlogin" does not have a static ID defined. Add nopasswdlogin to one of these files: /srv/pokybuild/yocto-worker/reproducible/build/build-st/meta-selftest/files/static-group
...
2025-05-12 21:09:25,963 - oe-selftest - INFO -       ERROR: Nothing RPROVIDES 'weston-dev' (but /srv/pokybuild/yocto-worker/reproducible/build/meta/recipes-graphics/wayland/weston_14.0.1.bb RDEPENDS on or otherwise requires it)
...
2025-05-12 21:09:25,963 - oe-selftest - INFO -       ERROR: Nothing RPROVIDES 'weston' (but /srv/pokybuild/yocto-worker/reproducible/build/meta/recipes-graphics/wayland/weston_14.0.1.bb, /srv/pokybuild/yocto-worker/reproducible/build/meta/recipes-graphics/packagegroups/packagegroup-core-weston.bb RDEPENDS on or otherwise requires it)
...
2025-05-12 21:09:25,963 - oe-selftest - INFO -       ERROR: Nothing RPROVIDES 'weston-examples' (but /srv/pokybuild/yocto-worker/reproducible/build/meta/recipes-graphics/packagegroups/packagegroup-core-weston.bb RDEPENDS on or otherwise requires it)
...

https://autobuilder.yoctoproject.org/valkyrie/#/builders/37/builds/1642


-- 
Mathieu Dubois-Briand, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com