diff --git a/drmresources.cpp b/drmresources.cpp
index e433239..6b8ed03 100644
--- a/drmresources.cpp
+++ b/drmresources.cpp
@@ -71,6 +71,11 @@
     return -ENODEV;
   }
 
+  min_resolution_ =
+      std::pair<uint32_t, uint32_t>(res->min_width, res->min_height);
+  max_resolution_ =
+      std::pair<uint32_t, uint32_t>(res->max_width, res->max_height);
+
   bool found_primary = false;
   int display_num = 1;