https://blog.cabroneria.com/categories/desktop/ Recent content in Desktop on > Cabronerias de Matu Hugo en-us Sun, 17 May 2026 00:00:00 -0400 https://blog.cabroneria.com/post/0009_freebsd15.1_wayland_no_sddm/ Sun, 17 May 2026 00:00:00 -0400 https://blog.cabroneria.com/post/0009_freebsd15.1_wayland_no_sddm/ <h2 id="problem">Problem</h2> <p>After upgrading to FreeBSD <code>15.1-BETA3</code> and getting <code>DRM 6.12</code> working see:<a href="https://blog.cabroneria.com/bits/0014_freebsd-15.1-drm-i915-runbook/">freebsd-15.1-drm-i915-runbook.md</a>, Plasma Wayland would not start through SDDM. Logging in via SDDM&rsquo;s greeter bounced back to the login screen with no error output. <code>wayland-session.log</code> was empty. XFCE (X11) worked fine through SDDM.</p> <h2 id="root-cause">Root Cause</h2> <p>Session activation failed in this configuration. <code>ck-list-sessions</code> showed:</p> <pre tabindex="0"><code>$ ck-list-sessions | grep active active = FALSE </code></pre><p>When a session is not marked active, kwin_wayland cannot acquire DRM device access : <code>/dev/dri/*</code> access fails, libseat/seatd integration may not work, and the Wayland compositor exits immediately, often with no log output. This matches the symptom exactly.</p>