From d0c12ac54de6799606d552a16f8d70780110d083 Mon Sep 17 00:00:00 2001
From: Xaver Hugl <xaver.hugl@gmail.com>
Date: Tue, 8 Feb 2022 20:09:08 +0100
Subject: [PATCH] backends/drm: ignore modifier env var if modifiers are not
 supported

Otherwise we might crash
---
 src/backends/drm/egl_gbm_backend.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/backends/drm/egl_gbm_backend.cpp b/src/backends/drm/egl_gbm_backend.cpp
index 36a6f0a5c1..50b0fde98c 100644
--- a/src/backends/drm/egl_gbm_backend.cpp
+++ b/src/backends/drm/egl_gbm_backend.cpp
@@ -162,7 +162,7 @@ bool EglGbmBackend::resetOutput(Output &output)
     QSharedPointer<GbmSurface> gbmSurface;
     bool modifiersEnvSet = false;
     static bool modifiersEnv = qEnvironmentVariableIntValue("KWIN_DRM_USE_MODIFIERS", &modifiersEnvSet) != 0;
-    static bool allowModifiers = (gpu()->isNVidia() && !modifiersEnvSet) || (modifiersEnvSet && modifiersEnv);
+    static bool allowModifiers = gpu()->addFB2ModifiersSupported() && ((gpu()->isNVidia() && !modifiersEnvSet) || (modifiersEnvSet && modifiersEnv));
 #if HAVE_GBM_BO_GET_FD_FOR_PLANE
     if (!allowModifiers) {
 #else