diff --git a/modules/desktop/graphics/labwc.config.nix b/modules/desktop/graphics/labwc.config.nix
index 2d1880390..1b4a47770 100644
--- a/modules/desktop/graphics/labwc.config.nix
+++ b/modules/desktop/graphics/labwc.config.nix
@@ -40,6 +40,7 @@ let
     runtimeInputs = [
       pkgs.systemd
       pkgs.dbus
+      pkgs.brightnessctl
     ];
 
     text =
@@ -52,6 +53,8 @@ let
         systemctl --user reset-failed
         systemctl --user stop ghaf-session.target
         systemctl --user start ghaf-session.target
+        # By default set system brightness to 100% which can be configured later
+        brightnessctl set 100%
       ''
       + cfg.extraAutostart;
   };
diff --git a/modules/desktop/profiles/graphics.nix b/modules/desktop/profiles/graphics.nix
index 9d0156544..6aa9a454d 100644
--- a/modules/desktop/profiles/graphics.nix
+++ b/modules/desktop/profiles/graphics.nix
@@ -95,8 +95,6 @@ in
       WLR_NO_HARDWARE_CURSORS = if (cfg.renderer == "pixman") then 1 else 0;
       # 24 is default value set in labwc
       XCURSOR_SIZE = 24;
-      # To Fix "Fontconfig error : No writable cache directories" during new session login
-      XDG_CACHE_HOME = "$(mktemp -d)";
       XKB_DEFAULT_LAYOUT = "us,ara,fi";
       XKB_DEFAULT_OPTIONS = "grp:alt_shift_toggle";
       # Set by default in labwc, but possibly not in other compositors
diff --git a/modules/microvm/virtualization/microvm/guivm.nix b/modules/microvm/virtualization/microvm/guivm.nix
index 7bcdbdbf2..ca194c6ab 100644
--- a/modules/microvm/virtualization/microvm/guivm.nix
+++ b/modules/microvm/virtualization/microvm/guivm.nix
@@ -245,11 +245,7 @@ in
           if config.ghaf.guest.kernel.hardening.graphics.enable then
             pkgs.linuxPackagesFor guest_graphics_hardened_kernel
           else
-            # TODO: with pkgs.linuxPackages_latest (6.10.2) default brightness
-            # value of ghaf system will change from 96000 (max brightness) to
-            # 4800 (5% of max brightness) which need to be debugged
-            # so, currently align Kernel version which is used by ghaf-host
-            config.boot.zfs.package.latestCompatibleLinuxPackages;
+            pkgs.linuxPackages_latest;
 
         # We need this patch to avoid reserving Intel graphics stolen memory for vm
         # https://gitlab.freedesktop.org/drm/i915/kernel/-/issues/12103