https://bugs.gentoo.org/919133
https://gitlab.freedesktop.org/pipewire/pipewire/-/issues/3688
https://gitlab.freedesktop.org/pipewire/pipewire/-/commit/8ecc61e1177c94e78fa171ee359cfbbd239942bc

From 8ecc61e1177c94e78fa171ee359cfbbd239942bc Mon Sep 17 00:00:00 2001
From: Wim Taymans <wtaymans@redhat.com>
Date: Tue, 5 Dec 2023 16:18:30 +0100
Subject: [PATCH] module-x11-bell: force pulse backend

The libcanberra ALSA backend has some races and causes crashes, we
should try to not use that one.

Fixes #3688
--- a/src/modules/module-x11-bell.c
+++ b/src/modules/module-x11-bell.c
@@ -104,6 +104,11 @@ static int play_sample(struct impl *impl)
 		res = -EIO;
 		goto exit;
 	}
+	if ((res = ca_context_set_driver(ca, "pulse")) < 0) {
+		pw_log_error("canberra context set backend error: %s", ca_strerror(res));
+		res = -EIO;
+		goto exit_destroy;
+	}
 	if ((res = ca_context_open(ca)) < 0) {
 		pw_log_error("canberra context open error: %s", ca_strerror(res));
 		res = -EIO;
-- 
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