diff --git a/backend/genesys_devices.c b/backend/genesys_devices.c
index 34139126a..51c1b6111 100644
--- a/backend/genesys_devices.c
+++ b/backend/genesys_devices.c
@@ -437,7 +437,7 @@ static Genesys_Sensor Sensor[] = {
    200,
    {0x00, 0x00, 0x00, 0x00},
    /* reg 0x10 - 0x1d */
-   {0x01, 0x80, 0x01, 0x80, 0x01, 0x80, /* EXPR/EXPG/EXPB */
+   {0x03, 0x00, 0x02, 0x00, 0x01, 0x80, /* EXPR/EXPG/EXPB */
     0x10, 0x08, 0x00, 0xff, 0x34, 0x00, 0x02, 0x04 },
    /* reg 0x52 - 0x5e */
    {0x03, 0x07,
@@ -929,8 +929,8 @@ static Genesys_Model canon_lide_100_model = {
   GENESYS_GL847,
   NULL,
 
-  {1200, 600, 300, 150, 75, 0},	/* possible x-resolutions */
-  {1200, 600, 300, 150, 75, 0},	/* possible y-resolutions */
+  {1200, 600, 300, 150, 100, 75, 0},	/* possible x-resolutions */
+  {1200, 600, 300, 150, 100, 75, 0},	/* possible y-resolutions */
   {16, 8, 0},			/* possible depths in gray mode */
   {16, 8, 0},			/* possible depths in color mode */
 
diff --git a/backend/genesys_gl847.c b/backend/genesys_gl847.c
index 70a0da48e..1e7760f2f 100644
--- a/backend/genesys_gl847.c
+++ b/backend/genesys_gl847.c
@@ -555,6 +555,7 @@ gl847_init_registers (Genesys_Device * dev)
   SETREG (0x7b, 0x00);
   SETREG (0x7c, 0x55);
   SETREG (0x7d, 0x00);
+  /* NOTE: autoconf is a non working option */
   SETREG (0x87, 0x02);
   SETREG (0x9d, 0x06);
   SETREG (0x9d, 0x00); /* XXX STEF XXX 1x multiplier instead of 8x */
@@ -4099,7 +4100,6 @@ gl847_init_memory_layout (Genesys_Device * dev)
   return status;
 }
 
-#if 0
 /** @brief dummy scan to reset scanner
  *
  * */
@@ -4165,6 +4165,7 @@ gl847_dummy_scan (Genesys_Device * dev)
   return SANE_STATUS_GOOD;
 }
 
+#if 0
 /**
  * reads a register from device and set up corresponding shadow register
  */
@@ -4498,6 +4499,9 @@ gl847_init (Genesys_Device * dev)
     }
   dev->already_initialized = SANE_TRUE;
 
+  /* dummy scan , don't care if it fails */
+  gl847_dummy_scan (dev);
+
   /* Move home */
   RIE (gl847_slow_back_home (dev, SANE_TRUE));
   dev->scanhead_position_in_steps = 0;