diff --git a/backend/genesys.c b/backend/genesys.c
index 76522b876..6c5d94225 100644
--- a/backend/genesys.c
+++ b/backend/genesys.c
@@ -5481,9 +5481,13 @@ Problems with the first approach:
 	  DBG (DBG_error, "Cannot convert from 16bit to lineart\n");
 	  return SANE_STATUS_INVAL;
 	}
-/*lines in input*/
+      /* lines in input to process */
       dst_lines = bytes / (dev->settings.pixels * channels);
-
+      if(dst_lines==0)
+        {
+          /* padd to at least line length */
+          dst_lines=1;
+        }
       bytes = dst_lines * dev->settings.pixels * channels;
 
       status = genesys_gray_lineart (dev,
@@ -6053,10 +6057,6 @@ init_options (Genesys_Scanner * s)
     {
       s->opt[OPT_DISABLE_DYNAMIC_LINEART].cap = SANE_CAP_INACTIVE;
     }
-  if (s->dev->model->asic_type == GENESYS_GL124)
-    {
-      s->val[OPT_DISABLE_DYNAMIC_LINEART].w = SANE_TRUE;
-    }
 
   /* disable_interpolation */
   s->opt[OPT_DISABLE_INTERPOLATION].name = "disable-interpolation";
diff --git a/backend/genesys_devices.c b/backend/genesys_devices.c
index c85d9aa1a..d8eefcf9b 100644
--- a/backend/genesys_devices.c
+++ b/backend/genesys_devices.c
@@ -1315,9 +1315,9 @@ static Genesys_Model canon_lide_110_model = {
   {16, 8, 0},			/* possible depths in color mode */
 
   SANE_FIX (3.6),		/* Start of scan area in mm (x) */
-  SANE_FIX (8.2),		/* Start of scan area in mm (y) */
+  SANE_FIX (8.5),		/* Start of scan area in mm (y) */
   SANE_FIX (213.80),		/* Size of scan area in mm (x) */
-  SANE_FIX (297.0),		/* Size of scan area in mm (y) */
+  SANE_FIX (300.0),		/* Size of scan area in mm (y) */
 
   SANE_FIX (1.0),		/* Start of white strip in mm (y) */
   SANE_FIX (0.0),		/* Start of black mark in mm (x) */
@@ -1367,9 +1367,9 @@ static Genesys_Model canon_lide_210_model = {
   {16, 8, 0},			/* possible depths in color mode */
 
   SANE_FIX (3.6),		/* Start of scan area in mm (x) */
-  SANE_FIX (8.2),		/* Start of scan area in mm (y) */
+  SANE_FIX (8.5),		/* Start of scan area in mm (y) */
   SANE_FIX (213.80),		/* Size of scan area in mm (x) */
-  SANE_FIX (297.0),		/* Size of scan area in mm (y) */
+  SANE_FIX (300.0),		/* Size of scan area in mm (y) */
 
   SANE_FIX (0.0),		/* Start of white strip in mm (y) */
   SANE_FIX (0.0),		/* Start of black mark in mm (x) */
diff --git a/backend/genesys_gl124.c b/backend/genesys_gl124.c
index a92d36433..5f5894d7a 100644
--- a/backend/genesys_gl124.c
+++ b/backend/genesys_gl124.c
@@ -1071,11 +1071,12 @@ gl124_init_motor_regs_scan (Genesys_Device * dev,
   /* STEPNO */
   sanei_genesys_set_double(reg,REG_STEPNO,scan_steps);
 
-  /* FASTNO */
-  sanei_genesys_set_double(reg,REG_FASTNO,scan_steps);
-
   /* fast table */
   fast_dpi=yres;
+  if (scan_mode != SCAN_MODE_COLOR)
+    {
+      fast_dpi*=3;
+    }
   fast_time=gl124_slope_table(fast_table,
                               &fast_steps,
                               fast_dpi,
@@ -1087,6 +1088,9 @@ gl124_init_motor_regs_scan (Genesys_Device * dev,
   RIE(gl124_send_slope_table (dev, STOP_TABLE, fast_table, fast_steps));
   RIE(gl124_send_slope_table (dev, FAST_TABLE, fast_table, fast_steps));
 
+  /* FASTNO */
+  sanei_genesys_set_double(reg,REG_FASTNO,fast_steps);
+
   /* FSHDEC */
   sanei_genesys_set_double(reg,REG_FSHDEC,fast_steps);
 
@@ -1611,9 +1615,6 @@ gl124_init_scan_regs (Genesys_Device * dev,
     {
       depth = 8;
     }
-  /* XXX STEF XXX
-  if (depth == 16)
-    flags |= SCAN_FLAG_DISABLE_GAMMA; */
 
   /* we enable true gray for cis scanners only, and just when doing 
    * scan since color calibration is OK for this mode
@@ -2732,7 +2733,7 @@ gl124_init_regs_for_scan (Genesys_Device * dev)
 
   if(channels*dev->settings.yres>=1200 && move>3000)
     {
-      move-=190;
+      move -= 180;
       status = gl124_feed (dev, move);
       if (status != SANE_STATUS_GOOD)
         {
@@ -2745,7 +2746,7 @@ gl124_init_regs_for_scan (Genesys_Device * dev)
     {
       if(channels==1)
         {
-          move-=25;
+          move-=0;
         }
     }
   DBG (DBG_info, "gl124_init_regs_for_scan: move=%f steps\n", move);