avoid wayland if nomodeset is on kernel command line

Related: #1691909

0001-data-disable-wayland-if-modesetting-is-disabled.patch

@@ -0,0 +1,30 @@
+From a0f3d7108f688d48ad8653c380dba575fcd2fc3f Mon Sep 17 00:00:00 2001
+From: Ray Strode <rstrode@redhat.com>
+Date: Mon, 15 Apr 2019 10:53:25 -0400
+Subject: [PATCH] data: disable wayland if modesetting is disabled
+
+wayland requires working modesetting, so don't even
+bother trying it if modesetting is disabled.
+
+This is more efficient and side-steps a bug in the fallback
+logic if start up is unreasonably slow.
+---
+ data/61-gdm.rules.in | 2 ++
+ 1 file changed, 2 insertions(+)
+
+diff --git a/data/61-gdm.rules.in b/data/61-gdm.rules.in
+index ad5b87d4c..ebdbfe9c1 100644
+--- a/data/61-gdm.rules.in
++++ b/data/61-gdm.rules.in
+@@ -1,6 +1,8 @@
+ # disable Wayland on Cirrus chipsets
+ ATTR{vendor}=="0x1013", ATTR{device}=="0x00b8", ATTR{subsystem_vendor}=="0x1af4", ATTR{subsystem_device}=="0x1100", RUN+="@libexecdir@/gdm-disable-wayland"
+ # disable Wayland on Hi1710 chipsets
+ ATTR{vendor}=="0x19e5", ATTR{device}=="0x1711", RUN+="@libexecdir@/gdm-disable-wayland"
+ # disable Wayland when using the proprietary nvidia driver
+ DRIVER=="nvidia", RUN+="@libexecdir@/gdm-disable-wayland"
++# disable Wayland if modesetting is disabled
++IMPORT{cmdline}="nomodeset", RUN+="@libexecdir@/gdm-disable-wayland"
+-- 
+2.20.1
+

gdm.spec

@@ -10,7 +10,7 @@
 Name: gdm
 Epoch: 1
 Version: 3.32.0
-Release: 2%{?dist}
+Release: 3%{?dist}
 Summary: The GNOME Display Manager
 
 License: GPLv2+
@@ -19,6 +19,8 @@ Source0: http://download.gnome.org/sources/gdm/3.30/gdm-%{version}.tar.xz
 Source1: org.gnome.login-screen.gschema.override
 Patch0: 0001-Honor-initial-setup-being-disabled-by-distro-install.patch
 
+Patch10001: 0001-data-disable-wayland-if-modesetting-is-disabled.patch
+
 Patch99: system-dconf.patch
 
 BuildRequires: pam-devel >= 0:%{pam_version}
@@ -311,6 +313,10 @@ fi
 %{_libdir}/pkgconfig/gdm-pam-extensions.pc
 
 %changelog
+* Mon Apr 15 2019 Ray Strode <rstrode@redhat.com> - 1:3.32.0-3
+- avoid wayland if nomodeset is on kernel command line
+  Related: #1691909
+
 * Mon Apr 15 2019 Ray Strode <rstrode@redhat.com> - 1:3.32.0-2
 - Drop CanGraphical patch for now.  It's causing problems.
   Resolves: #1683197