diff --git a/src/backends/native/gen-default-modes.py b/src/backends/native/gen-default-modes.py
index 75c4e242a..a94f44b50 100644
--- a/src/backends/native/gen-default-modes.py
+++ b/src/backends/native/gen-default-modes.py
@@ -51,7 +51,7 @@ common_resolutions = [
 
 output_lines = [
     "/* Generated by gen-default-modes.py */\n",
-    "static const drmModeModeInfo meta_default_drm_mode_infos[] = {",
+    "static const drmModeModeInfo meta_default_landscape_drm_mode_infos[] = {",
 ]
 
 def sync_flags(hsync, vsync):
@@ -76,6 +76,21 @@ def drm_mode_info_from_modeline(line):
          sync_flags(sline[11], sline[12]),
          sline[1])
 
+def portrait_drm_mode_info_from_modeline(line):
+    sline = line.split()
+    return "{ %d, %d, %d, %d, %d, 0, %d, %d, %d, %d, 0, 0, %s, DRM_MODE_TYPE_DEFAULT, \"%dx%d_60.00\" }," % \
+        (int(float(sline[2]) * 1000),
+         int(sline[7]),
+         int(sline[8]),
+         int(sline[9]),
+         int(sline[10]),
+         int(sline[3]),
+         int(sline[4]),
+         int(sline[5]),
+         int(sline[6]),
+         sync_flags(sline[12], sline[11]),
+         int(sline[7]), int(sline[3]))
+
 for resolution in common_resolutions:
     cvt = os.popen("%s %s %s" % ('cvt', resolution[0], resolution[1]))
     cvt.readline() # discard comment line
@@ -84,6 +99,16 @@ for resolution in common_resolutions:
     cvt.close()
 output_lines.append("};")
 
+output_lines.append("")
+output_lines.append("static const drmModeModeInfo meta_default_portrait_drm_mode_infos[] = {")
+for resolution in common_resolutions:
+    cvt = os.popen("%s %s %s" % ('cvt', resolution[0], resolution[1]))
+    cvt.readline() # discard comment line
+    line = cvt.readline()
+    output_lines.append(portrait_drm_mode_info_from_modeline(line))
+    cvt.close()
+output_lines.append("};")
+
 for line in output_lines:
     sys.stdout.write(line + "\n")
 sys.stdout.flush()
diff --git a/src/backends/native/meta-default-modes.h b/src/backends/native/meta-default-modes.h
index b111204f2..8b45f9f0c 100644
--- a/src/backends/native/meta-default-modes.h
+++ b/src/backends/native/meta-default-modes.h
@@ -1,6 +1,6 @@
 /* Generated by gen-default-modes.py */
 
-static const drmModeModeInfo meta_default_drm_mode_infos[] = {
+static const drmModeModeInfo meta_default_landscape_drm_mode_infos[] = {
 { 38250, 800, 832, 912, 1024, 0, 600, 603, 607, 624, 0, 0, DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC, DRM_MODE_TYPE_DEFAULT, "800x600_60.00" },
 { 63500, 1024, 1072, 1176, 1328, 0, 768, 771, 775, 798, 0, 0, DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC, DRM_MODE_TYPE_DEFAULT, "1024x768_60.00" },
 { 81750, 1152, 1216, 1336, 1520, 0, 864, 867, 871, 897, 0, 0, DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC, DRM_MODE_TYPE_DEFAULT, "1152x864_60.00" },
@@ -27,3 +27,31 @@ static const drmModeModeInfo meta_default_drm_mode_infos[] = {
 { 813000, 4096, 4440, 4888, 5680, 0, 2304, 2307, 2312, 2386, 0, 0, DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC, DRM_MODE_TYPE_DEFAULT, "4096x2304_60.00" },
 { 1276500, 5120, 5560, 6128, 7136, 0, 2880, 2883, 2888, 2982, 0, 0, DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC, DRM_MODE_TYPE_DEFAULT, "5120x2880_60.00" },
 };
+
+static const drmModeModeInfo meta_default_portrait_drm_mode_infos[] = {
+{ 38250, 600, 603, 607, 624, 0, 800, 832, 912, 1024, 0, 0, DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC, DRM_MODE_TYPE_DEFAULT, "600x800_60.00" },
+{ 63500, 768, 771, 775, 798, 0, 1024, 1072, 1176, 1328, 0, 0, DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC, DRM_MODE_TYPE_DEFAULT, "768x1024_60.00" },
+{ 81750, 864, 867, 871, 897, 0, 1152, 1216, 1336, 1520, 0, 0, DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC, DRM_MODE_TYPE_DEFAULT, "864x1152_60.00" },
+{ 101250, 960, 963, 967, 996, 0, 1280, 1360, 1488, 1696, 0, 0, DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC, DRM_MODE_TYPE_DEFAULT, "960x1280_60.00" },
+{ 121750, 1050, 1053, 1057, 1089, 0, 1400, 1488, 1632, 1864, 0, 0, DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC, DRM_MODE_TYPE_DEFAULT, "1050x1400_60.00" },
+{ 129000, 1080, 1083, 1087, 1120, 0, 1440, 1528, 1680, 1920, 0, 0, DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC, DRM_MODE_TYPE_DEFAULT, "1080x1440_60.00" },
+{ 161000, 1200, 1203, 1207, 1245, 0, 1600, 1712, 1880, 2160, 0, 0, DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC, DRM_MODE_TYPE_DEFAULT, "1200x1600_60.00" },
+{ 233500, 1440, 1443, 1447, 1493, 0, 1920, 2064, 2264, 2608, 0, 0, DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC, DRM_MODE_TYPE_DEFAULT, "1440x1920_60.00" },
+{ 267250, 1536, 1539, 1543, 1592, 0, 2048, 2208, 2424, 2800, 0, 0, DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC, DRM_MODE_TYPE_DEFAULT, "1536x2048_60.00" },
+{ 83500, 800, 803, 809, 831, 0, 1280, 1352, 1480, 1680, 0, 0, DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC, DRM_MODE_TYPE_DEFAULT, "800x1280_60.00" },
+{ 106500, 900, 903, 909, 934, 0, 1440, 1528, 1672, 1904, 0, 0, DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC, DRM_MODE_TYPE_DEFAULT, "900x1440_60.00" },
+{ 146250, 1050, 1053, 1059, 1089, 0, 1680, 1784, 1960, 2240, 0, 0, DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC, DRM_MODE_TYPE_DEFAULT, "1050x1680_60.00" },
+{ 193250, 1200, 1203, 1209, 1245, 0, 1920, 2056, 2256, 2592, 0, 0, DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC, DRM_MODE_TYPE_DEFAULT, "1200x1920_60.00" },
+{ 348500, 1600, 1603, 1609, 1658, 0, 2560, 2760, 3032, 3504, 0, 0, DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC, DRM_MODE_TYPE_DEFAULT, "1600x2560_60.00" },
+{ 74500, 720, 723, 728, 748, 0, 1280, 1344, 1472, 1664, 0, 0, DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC, DRM_MODE_TYPE_DEFAULT, "720x1280_60.00" },
+{ 85250, 768, 771, 781, 798, 0, 1368, 1440, 1576, 1784, 0, 0, DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC, DRM_MODE_TYPE_DEFAULT, "768x1368_60.00" },
+{ 118250, 900, 903, 908, 934, 0, 1600, 1696, 1856, 2112, 0, 0, DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC, DRM_MODE_TYPE_DEFAULT, "900x1600_60.00" },
+{ 173000, 1080, 1083, 1088, 1120, 0, 1920, 2048, 2248, 2576, 0, 0, DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC, DRM_MODE_TYPE_DEFAULT, "1080x1920_60.00" },
+{ 197000, 1152, 1155, 1160, 1195, 0, 2048, 2184, 2400, 2752, 0, 0, DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC, DRM_MODE_TYPE_DEFAULT, "1152x2048_60.00" },
+{ 312250, 1440, 1443, 1448, 1493, 0, 2560, 2752, 3024, 3488, 0, 0, DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC, DRM_MODE_TYPE_DEFAULT, "1440x2560_60.00" },
+{ 396250, 1620, 1623, 1628, 1679, 0, 2880, 3096, 3408, 3936, 0, 0, DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC, DRM_MODE_TYPE_DEFAULT, "1620x2880_60.00" },
+{ 492000, 1800, 1803, 1808, 1865, 0, 3200, 3456, 3800, 4400, 0, 0, DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC, DRM_MODE_TYPE_DEFAULT, "1800x3200_60.00" },
+{ 712750, 2160, 2163, 2168, 2237, 0, 3840, 4160, 4576, 5312, 0, 0, DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC, DRM_MODE_TYPE_DEFAULT, "2160x3840_60.00" },
+{ 813000, 2304, 2307, 2312, 2386, 0, 4096, 4440, 4888, 5680, 0, 0, DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC, DRM_MODE_TYPE_DEFAULT, "2304x4096_60.00" },
+{ 1276500, 2880, 2883, 2888, 2982, 0, 5120, 5560, 6128, 7136, 0, 0, DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC, DRM_MODE_TYPE_DEFAULT, "2880x5120_60.00" },
+};
diff --git a/src/backends/native/meta-gpu-kms.c b/src/backends/native/meta-gpu-kms.c
index 2d17af764..0ab345ba9 100644
--- a/src/backends/native/meta-gpu-kms.c
+++ b/src/backends/native/meta-gpu-kms.c
@@ -601,11 +601,21 @@ init_modes (MetaGpuKms *gpu_kms,
 
   g_hash_table_destroy (modes_table);
 
-  for (i = 0; i < G_N_ELEMENTS (meta_default_drm_mode_infos); i++)
+  for (i = 0; i < G_N_ELEMENTS (meta_default_landscape_drm_mode_infos); i++)
     {
       MetaCrtcMode *mode;
 
-      mode = create_mode (&meta_default_drm_mode_infos[i], (long) mode_id);
+      mode = create_mode (&meta_default_landscape_drm_mode_infos[i], mode_id);
+      modes = g_list_append (modes, mode);
+
+      mode_id++;
+    }
+
+  for (i = 0; i < G_N_ELEMENTS (meta_default_portrait_drm_mode_infos); i++)
+    {
+      MetaCrtcMode *mode;
+
+      mode = create_mode (&meta_default_portrait_drm_mode_infos[i], mode_id);
       modes = g_list_append (modes, mode);
 
       mode_id++;
diff --git a/src/backends/native/meta-output-kms.c b/src/backends/native/meta-output-kms.c
index b15ffd974..b373b7298 100644
--- a/src/backends/native/meta-output-kms.c
+++ b/src/backends/native/meta-output-kms.c
@@ -357,7 +357,10 @@ static void
 add_common_modes (MetaOutput *output,
                   MetaGpuKms *gpu_kms)
 {
+  const drmModeModeInfo *drm_mode;
+  MetaCrtcMode *crtc_mode;
   GPtrArray *array;
+  float refresh_rate;
   unsigned i;
   unsigned max_hdisplay = 0;
   unsigned max_vdisplay = 0;
@@ -365,9 +368,6 @@ add_common_modes (MetaOutput *output,
 
   for (i = 0; i < output->n_modes; i++)
     {
-      const drmModeModeInfo *drm_mode;
-      float refresh_rate;
-
       drm_mode = output->modes[i]->driver_private;
       refresh_rate = meta_calculate_drm_mode_refresh_rate (drm_mode);
       max_hdisplay = MAX (max_hdisplay, drm_mode->hdisplay);
@@ -379,22 +379,37 @@ add_common_modes (MetaOutput *output,
   max_refresh_rate *= (1 + SYNC_TOLERANCE);
 
   array = g_ptr_array_new ();
-  for (i = 0; i < G_N_ELEMENTS (meta_default_drm_mode_infos); i++)
+  if (max_hdisplay > max_vdisplay)
     {
-      const drmModeModeInfo *drm_mode;
-      float refresh_rate;
-      MetaCrtcMode *crtc_mode;
+      for (i = 0; i < G_N_ELEMENTS (meta_default_landscape_drm_mode_infos); i++)
+        {
+          drm_mode = &meta_default_landscape_drm_mode_infos[i];
+          refresh_rate = meta_calculate_drm_mode_refresh_rate (drm_mode);
+          if (drm_mode->hdisplay > max_hdisplay ||
+              drm_mode->vdisplay > max_vdisplay ||
+              refresh_rate > max_refresh_rate)
+            continue;
 
-      drm_mode = &meta_default_drm_mode_infos[i];
-      refresh_rate = meta_calculate_drm_mode_refresh_rate (drm_mode);
-      if (drm_mode->hdisplay > max_hdisplay ||
-          drm_mode->vdisplay > max_vdisplay ||
-          refresh_rate > max_refresh_rate)
-        continue;
+          crtc_mode = meta_gpu_kms_get_mode_from_drm_mode (gpu_kms,
+                                                           drm_mode);
+          g_ptr_array_add (array, crtc_mode);
+        }
+    }
+  else
+    {
+      for (i = 0; i < G_N_ELEMENTS (meta_default_portrait_drm_mode_infos); i++)
+        {
+          drm_mode = &meta_default_portrait_drm_mode_infos[i];
+          refresh_rate = meta_calculate_drm_mode_refresh_rate (drm_mode);
+          if (drm_mode->hdisplay > max_hdisplay ||
+              drm_mode->vdisplay > max_vdisplay ||
+              refresh_rate > max_refresh_rate)
+            continue;
 
-      crtc_mode = meta_gpu_kms_get_mode_from_drm_mode (gpu_kms,
-                                                       drm_mode);
-      g_ptr_array_add (array, crtc_mode);
+          crtc_mode = meta_gpu_kms_get_mode_from_drm_mode (gpu_kms,
+                                                           drm_mode);
+          g_ptr_array_add (array, crtc_mode);
+        }
     }
 
   output->modes = g_renew (MetaCrtcMode *, output->modes,