From 88837bf1490e80a642307cb808bdd044cd732915 Mon Sep 17 00:00:00 2001 From: Dima Krasner Date: Thu, 31 Mar 2022 13:50:52 +0800 Subject: [PATCH] fall back to a lower output mode if needed (swaywm/sway@4cdc4ac) --- dwl.c | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-) diff --git a/dwl.c b/dwl.c index 529dbf8..9b69dd2 100644 --- a/dwl.c +++ b/dwl.c @@ -822,6 +822,7 @@ createmon(struct wl_listener *listener, void *data) /* This event is raised by the backend when a new output (aka a display or * monitor) becomes available. */ struct wlr_output *wlr_output = data; + struct wlr_output_mode *preferred_mode, *mode; const MonitorRule *r; Monitor *m = wlr_output->data = calloc(1, sizeof(*m)); if (!m) @@ -850,7 +851,17 @@ createmon(struct wl_listener *listener, void *data) * monitor supports only a specific set of modes. We just pick the * monitor's preferred mode; a more sophisticated compositor would let * the user configure it. */ - wlr_output_set_mode(wlr_output, wlr_output_preferred_mode(wlr_output)); + preferred_mode = wlr_output_preferred_mode(wlr_output); + wlr_output_set_mode(wlr_output, preferred_mode); + if (!wlr_output_test(wlr_output) && !wl_list_empty(&wlr_output->modes)) { + wl_list_for_each(mode, &wlr_output->modes, link) { + if (mode != preferred_mode) { + wlr_output_set_mode(wlr_output, mode); + if (wlr_output_test(wlr_output)) + break; + } + } + } wlr_output_enable_adaptive_sync(wlr_output, 1); /* Set up event listeners */