diff --git a/device/accton/x86_64-accton_as4630_54pe-r0/installer.conf b/device/accton/x86_64-accton_as4630_54pe-r0/installer.conf
index 925a32fc0c..735fa7992d 100755
--- a/device/accton/x86_64-accton_as4630_54pe-r0/installer.conf
+++ b/device/accton/x86_64-accton_as4630_54pe-r0/installer.conf
@@ -1,3 +1,4 @@
 CONSOLE_PORT=0x3f8
 CONSOLE_DEV=0
 CONSOLE_SPEED=115200
+ONIE_PLATFORM_EXTRA_CMDLINE_LINUX="intel_iommu=off modprobe.blacklist=i2c-ismt,i2c_ismt,i2c-i801,i2c_i801"
diff --git a/platform/broadcom/sonic-platform-modules-accton/as4630-54pe/modules/x86-64-accton-as4630-54pe-leds.c b/platform/broadcom/sonic-platform-modules-accton/as4630-54pe/modules/x86-64-accton-as4630-54pe-leds.c
old mode 100755
new mode 100644
diff --git a/platform/broadcom/sonic-platform-modules-accton/as4630-54pe/utils/accton_as4630_54pe_util.py b/platform/broadcom/sonic-platform-modules-accton/as4630-54pe/utils/accton_as4630_54pe_util.py
index f0081b33b2..66599ad88a 100755
--- a/platform/broadcom/sonic-platform-modules-accton/as4630-54pe/utils/accton_as4630_54pe_util.py
+++ b/platform/broadcom/sonic-platform-modules-accton/as4630-54pe/utils/accton_as4630_54pe_util.py
@@ -118,7 +118,6 @@ def main():
         elif opt in ('-f', '--force'):
             FORCE = 1
         else:
-            print("TEST")
             logging.info('no option')
     for arg in args:
         if arg == 'install':
@@ -167,7 +166,9 @@ def driver_inserted():
 kos = [
 'depmod -ae',
 'modprobe i2c_dev',
-'modprobe i2c_mux_pca954x force_deselect_on_exit=1',
+'modprobe i2c_i801',
+'modprobe i2c_ismt',
+'modprobe i2c_mux_pca954x',
 'modprobe ym2651y',
 'modprobe x86_64_accton_as4630_54pe_cpld',
 'modprobe x86_64_accton_as4630_54pe_leds',
@@ -176,17 +177,7 @@ kos = [
 
 def driver_install():
     global FORCE
-    
-    ret=log_os_system("lsmod|grep i2c_ismt",1)    
-    my_log("rmmond i2cismt")
-    log_os_system("rmmod i2c_ismt", 1)
-    log_os_system("rmmod i2c_i801", 1)
-    log_os_system("modprobe i2c-i801", 1)
-    time.sleep(1)
-    log_os_system("modprobe i2c-ismt", 1)
-  
-        
-    
+
     for i in range(0,len(kos)):
         status, output = log_os_system(kos[i], 1)
         if status:
@@ -226,6 +217,13 @@ def device_install():
             if FORCE == 0:
                 return status
 
+    # set all pca954x idle_disconnect
+    cmd = 'echo -2 | tee /sys/bus/i2c/drivers/pca954x/*-00*/idle_state'
+    status, output = log_os_system(cmd, 1)
+    if status:
+        print(output)
+        if FORCE == 0:
+            return status
     for i in range(0,len(sfp_map)):
         if(i < 4):
             opt='optoe2'