diff --git a/pkgs/os-specific/linux/kernel/linux-3.0.nix b/pkgs/os-specific/linux/kernel/linux-3.0.nix
index d2680db30f1..f3b30b329d4 100644
--- a/pkgs/os-specific/linux/kernel/linux-3.0.nix
+++ b/pkgs/os-specific/linux/kernel/linux-3.0.nix
@@ -77,8 +77,9 @@ let
       FB_GEODE y
 
       # Video configuration
-      # The intel drivers already require KMS
+      # Enable KMS for devices whose X.org driver supports it.
       DRM_I915_KMS y
+      DRM_RADEON_KMS y
       # Hybrid graphics support
       VGA_SWITCHEROO y
 
@@ -192,6 +193,10 @@ let
       CGROUP_MEM_RES_CTLR_SWAP? y
       DEVPTS_MULTIPLE_INSTANCES? y
 
+      # Enable staging drivers.  These are somewhat experimental, but
+      # they generally don't hurt.
+      STAGING y
+
       ${if kernelPlatform ? kernelExtraConfig then kernelPlatform.kernelExtraConfig else ""}
       ${extraConfig}
     '';
diff --git a/pkgs/os-specific/linux/kernel/linux-3.1.nix b/pkgs/os-specific/linux/kernel/linux-3.1.nix
index 2b74c3a0ba9..d37887ec14a 100644
--- a/pkgs/os-specific/linux/kernel/linux-3.1.nix
+++ b/pkgs/os-specific/linux/kernel/linux-3.1.nix
@@ -77,8 +77,9 @@ let
       FB_GEODE y
 
       # Video configuration
-      # The intel drivers already require KMS
+      # Enable KMS for devices whose X.org driver supports it.
       DRM_I915_KMS y
+      DRM_RADEON_KMS y
       # Hybrid graphics support
       VGA_SWITCHEROO y
 
@@ -192,6 +193,10 @@ let
       CGROUP_MEM_RES_CTLR_SWAP? y
       DEVPTS_MULTIPLE_INSTANCES? y
 
+      # Enable staging drivers.  These are somewhat experimental, but
+      # they generally don't hurt.
+      STAGING y
+
       ${if kernelPlatform ? kernelExtraConfig then kernelPlatform.kernelExtraConfig else ""}
       ${extraConfig}
     '';