add newlines for error printfs

compositor/compositor-x11.c

@@ -140,7 +140,7 @@ dri2_connect(struct x11_compositor *c)
 		xcb_dri2_query_version_reply (c->conn,
 					      dri2_query_cookie, &error);
 	if (dri2_query == NULL || error != NULL) {
-		fprintf(stderr, "DRI2: failed to query version");
+		fprintf(stderr, "DRI2: failed to query version\n");
 		free(error);
 		return EGL_FALSE;
 	}
@@ -152,7 +152,8 @@ dri2_connect(struct x11_compositor *c)
 					  connect_cookie, NULL);
 	if (connect == NULL ||
 	    connect->driver_name_length + connect->device_name_length == 0) {
-		fprintf(stderr, "DRI2: failed to authenticate");
+		fprintf(stderr, "DRI2: failed to connect, DRI2 version: %u.%u\n",
+			c->dri2_major, c->dri2_minor);
 		return -1;
 	}
 
@@ -177,7 +178,7 @@ dri2_connect(struct x11_compositor *c)
 	fd = open(path, O_RDWR);
 	if (fd < 0) {
 		fprintf(stderr,
-			"DRI2: could not open %s (%s)", path, strerror(errno));
+			"DRI2: could not open %s (%s)\n", path, strerror(errno));
 		return -1;
 	}
 
@@ -197,7 +198,7 @@ dri2_authenticate(struct x11_compositor *c, uint32_t magic)
 		xcb_dri2_authenticate_reply(c->conn,
 					    authenticate_cookie, NULL);
 	if (authenticate == NULL || !authenticate->authenticated) {
-		fprintf(stderr, "DRI2: failed to authenticate");
+		fprintf(stderr, "DRI2: failed to authenticate\n");
 		free(authenticate);
 		return -1;
 	}
@@ -222,7 +223,7 @@ x11_compositor_init_egl(struct x11_compositor *c)
 		return -1;
 
 	if (drmGetMagic(c->base.drm.fd, &magic)) {
-		fprintf(stderr, "DRI2: failed to get drm magic");
+		fprintf(stderr, "DRI2: failed to get drm magic\n");
 		return -1;
 	}