Better handle outputs without CRTC

This happens if you plug in more outputs than supported by your GPU.

This patch makes it so outputs without CRTCs appear as disabled. As soon as
they get a CRTC (signalled via the mode event), we can enable them.

1 files changed, 11 insertions, 1 deletions

diff --git a/sway/desktop/output.c b/sway/desktop/output.c
index 3f6c3d87..37651d66 100644
--- a/sway/desktop/output.c
+++ b/sway/desktop/output.c
@@ -503,7 +503,18 @@ static void handle_destroy(struct wl_listener *listener, void *data) {
 
 static void handle_mode(struct wl_listener *listener, void *data) {
         struct sway_output *output = wl_container_of(listener, output, mode);
+        if (!output->configured) {
+                return;
+        }
         if (!output->enabled) {
+                struct output_config *oc = output_find_config(output);
+                if (output->wlr_output->current_mode != NULL &&
+                                (!oc || oc->enabled)) {
+                        // We want to enable this output, but it didn't work last time,
+                        // possibly because we hadn't enough CRTCs. Try again now that the
+                        // output has a mode.
+                        output_enable(output, oc);
+                }
                 return;
         }
         arrange_layers(output);
@@ -592,7 +603,6 @@ void handle_new_output(struct wl_listener *listener, void *data) {
         output->damage_destroy.notify = damage_handle_destroy;
 
         struct output_config *oc = output_find_config(output);
-
         if (!oc || oc->enabled) {
                 output_enable(output, oc);
         } else {