Index: head/graphics/libdrm/Makefile
===================================================================
--- head/graphics/libdrm/Makefile
+++ head/graphics/libdrm/Makefile
@@ -4,6 +4,7 @@
 PORTNAME=	libdrm
 PORTVERSION=	2.4.75
 PORTEPOCH=	1
+PORTREVISION=	1
 CATEGORIES=	graphics x11
 MASTER_SITES=	http://dri.freedesktop.org/libdrm/
 
Index: head/graphics/libdrm/files/patch-xf86drmMode.c
===================================================================
--- head/graphics/libdrm/files/patch-xf86drmMode.c
+++ head/graphics/libdrm/files/patch-xf86drmMode.c
@@ -1,54 +0,0 @@
-Disable checking for hw.dri.%d.modesetting.
-This sysctl is only available if a KMS module is loaded. But the libdrm
-check happens before X got a chance of loading the KMS module.
-
---- xf86drmMode.c.orig	2017-01-28 01:15:16 UTC
-+++ xf86drmMode.c
-@@ -47,6 +47,7 @@
- #include <stdlib.h>
- #include <sys/ioctl.h>
- #ifdef HAVE_SYS_SYSCTL_H
-+#include <sys/types.h>
- #include <sys/sysctl.h>
- #endif
- #include <stdio.h>
-@@ -797,38 +798,7 @@ int drmCheckModesettingSupported(const c
- 	if (found)
- 		return 0;
- #elif defined (__FreeBSD__) || defined (__FreeBSD_kernel__)
--	char kbusid[1024], sbusid[1024];
--	char oid[128];
--	int domain, bus, dev, func;
--	int i, modesetting, ret;
--	size_t len;
--
--	ret = sscanf(busid, "pci:%04x:%02x:%02x.%d", &domain, &bus, &dev,
--	    &func);
--	if (ret != 4)
--		return -EINVAL;
--	snprintf(kbusid, sizeof(kbusid), "pci:%04x:%02x:%02x.%d", domain, bus,
--	    dev, func);
--
--	/* How many GPUs do we expect in the machine ? */
--	for (i = 0; i < 16; i++) {
--		snprintf(oid, sizeof(oid), "hw.dri.%d.busid", i);
--		len = sizeof(sbusid);
--		ret = sysctlbyname(oid, sbusid, &len, NULL, 0);
--		if (ret == -1) {
--			if (errno == ENOENT)
--				continue;
--			return -EINVAL;
--		}
--		if (strcmp(sbusid, kbusid) != 0)
--			continue;
--		snprintf(oid, sizeof(oid), "hw.dri.%d.modesetting", i);
--		len = sizeof(modesetting);
--		ret = sysctlbyname(oid, &modesetting, &len, NULL, 0);
--		if (ret == -1 || len != sizeof(modesetting))
--			return -EINVAL;
--		return (modesetting ? 0 : -ENOSYS);
--	}
-+	return 0;
- #elif defined(__DragonFly__)
- 	return 0;
- #endif