diff --git a/rootdir/etc/init.qcom.rc b/rootdir/etc/init.qcom.rc
index 238aae0..2a9a166 100644
--- a/rootdir/etc/init.qcom.rc
+++ b/rootdir/etc/init.qcom.rc
@@ -45,6 +45,9 @@ on early-init
     # Disable UFS clock scaling
     write /sys/bus/platform/devices/1d84000.ufshc/clkscale_enable 0
 
+    # turn off vblank irq immediately after turning off
+    write /sys/module/drm/parameters/vblankoffdelay -1
+
 on init
     # Create cgroup mount point for memory
     mkdir /sys/fs/cgroup/memory/bg 0750 root system