Please read the commit message.

In the previous update I switched the accelerometer driver from Eduardo's driver to crashman's driver please use sensors.default.so from the original firmware.
Switch both framebuffers back to 16 bit depth
Reduce both framebuffers to 4MB each 720p hdmi
revert the wifi driver to version .106

arch/arm/mach-tegra/board-shuttle-gpu.c

@@ -174,7 +174,7 @@ static struct tegra_fb_data shuttle_fb_data = {
 	.win		= 0,
 	.xres		= 1280,
 	.yres		= 800,
-	.bits_per_pixel = 32, 
+	.bits_per_pixel = 16, 
 };
 
 #elif defined(SHUTTLE_1280x800PANEL_2)
@@ -202,7 +202,7 @@ static struct tegra_fb_data shuttle_fb_data = {
 	.win		= 0,
 	.xres		= 1280,
 	.yres		= 800,
-	.bits_per_pixel = 32,
+	.bits_per_pixel = 16,
 };
 
 #elif defined(SHUTTLE_1366x768PANEL)
@@ -229,7 +229,7 @@ static struct tegra_fb_data shuttle_fb_data = {
 	.win		= 0,
 	.xres		= 1366,
 	.yres		= 768,
-	.bits_per_pixel = 32,
+	.bits_per_pixel = 16,
 };
 
 #elif defined(SHUTTLE_1024x600PANEL1)
@@ -258,7 +258,7 @@ static struct tegra_fb_data shuttle_fb_data = {
 	.win		= 0,
 	.xres		= 1024,
 	.yres		= 600,
-	.bits_per_pixel = 32,
+	.bits_per_pixel = 16,
 };
 
 #else
@@ -285,7 +285,7 @@ static struct tegra_fb_data shuttle_fb_data = {
 	.win		= 0,
 	.xres		= 1024,
 	.yres		= 600,
-	.bits_per_pixel = 32,
+	.bits_per_pixel = 16,
 };
 
 #endif
@@ -298,7 +298,7 @@ static struct tegra_fb_data shuttle_hdmi_fb_data = {
 	.win		= 0,
 	.xres		= 1920,
 	.yres		= 1080,
-	.bits_per_pixel = 32,
+	.bits_per_pixel = 16,
 };
 
 #else
@@ -307,7 +307,7 @@ static struct tegra_fb_data shuttle_hdmi_fb_data = {
 	.win		= 0,
 	.xres		= 1280,
 	.yres		= 720,
-	.bits_per_pixel = 32,
+	.bits_per_pixel = 16,
 };
 #endif
 

arch/arm/mach-tegra/board-shuttle.h

@@ -53,12 +53,12 @@
 
 #define SHUTTLE_MEM_SIZE 		SZ_512M			/* Total memory */
 
-/*#define SHUTTLE_GPU_MEM_SIZE 	SZ_128M*/		/* Memory reserved for GPU */
+#define SHUTTLE_GPU_MEM_SIZE 	SZ_128M		/* Memory reserved for GPU */
 /*#define SHUTTLE_GPU_MEM_SIZE 	SZ_64M*/		/* Memory reserved for GPU */
-#define SHUTTLE_GPU_MEM_SIZE 	(128*SZ_2M)		/* Memory reserved for GPU */
+/*#define SHUTTLE_GPU_MEM_SIZE 	(128*SZ_2M)*/		/* Memory reserved for GPU */
 
-#define SHUTTLE_FB1_MEM_SIZE   SZ_8M      /* Memory reserved for Framebuffer 1: LCD */
-#define SHUTTLE_FB2_MEM_SIZE   SZ_8M      /* Memory reserved for Framebuffer 2: HDMI out */
+#define SHUTTLE_FB1_MEM_SIZE   SZ_4M      /* Memory reserved for Framebuffer 1: LCD */
+#define SHUTTLE_FB2_MEM_SIZE   SZ_4M      /* Memory reserved for Framebuffer 2: HDMI out */
 
 /* #define DYNAMIC_GPU_MEM 1 */						/* use dynamic memory for GPU */
 
@@ -164,28 +164,28 @@ extern int shuttle_camera_pm_register_devices(void);
 #if defined(SHUTTLE_1280x800PANEL_1)
 /* Panel same as Motorola Xoom (tm) */
 /* Frame buffer size assuming 16bpp color */
-#	define SHUTTLE_FB_SIZE TEGRA_ROUND_ALLOC(1280*800*(32/8)*SHUTTLE_FB_PAGES)
+#	define SHUTTLE_FB_SIZE TEGRA_ROUND_ALLOC(1280*800*(16/8)*SHUTTLE_FB_PAGES)
 #elif defined(SHUTTLE_1280x800PANEL_2)
 /* If using 1280x800 panel (panel upgrade) */
 /* Frame buffer size assuming 16bpp color */
-#	define SHUTTLE_FB_SIZE TEGRA_ROUND_ALLOC(1280*800*(32/8)*SHUTTLE_FB_PAGES)
+#	define SHUTTLE_FB_SIZE TEGRA_ROUND_ALLOC(1280*800*(16/8)*SHUTTLE_FB_PAGES)
 #elif defined(SHUTTLE_1366x768PANEL)
 /* Frame buffer size assuming 16bpp color */
-#	define SHUTTLE_FB_SIZE TEGRA_ROUND_ALLOC(1368*768*(32/8)*SHUTTLE_FB_PAGES)
+#	define SHUTTLE_FB_SIZE TEGRA_ROUND_ALLOC(1368*768*(16/8)*SHUTTLE_FB_PAGES)
 #elif defined(SHUTTLE_1024x600PANEL1)
 /* If using 1024x600 panel (Shuttle default panel) */
 /* Frame buffer size assuming 16bpp color */
-#	define SHUTTLE_FB_SIZE TEGRA_ROUND_ALLOC(1024*600*(32/8)*SHUTTLE_FB_PAGES)
+#	define SHUTTLE_FB_SIZE TEGRA_ROUND_ALLOC(1024*600*(16/8)*SHUTTLE_FB_PAGES)
 #else
 /* Frame buffer size assuming 16bpp color */
-#	define SHUTTLE_FB_SIZE TEGRA_ROUND_ALLOC(1024*600*(32/8)*SHUTTLE_FB_PAGES)
+#	define SHUTTLE_FB_SIZE TEGRA_ROUND_ALLOC(1024*600*(16/8)*SHUTTLE_FB_PAGES)
 #endif
 
 #if defined(SHUTTLE_1920x1080HDMI)
 /* Frame buffer size assuming 32bpp color and 2 pages for page flipping */
-#	define SHUTTLE_FB_HDMI_SIZE TEGRA_ROUND_ALLOC(1920*1080*(32/8)*SHUTTLE_FB_PAGES)
+#	define SHUTTLE_FB_HDMI_SIZE TEGRA_ROUND_ALLOC(1920*1080*(16/8)*SHUTTLE_FB_PAGES)
 #else
-#	define SHUTTLE_FB_HDMI_SIZE TEGRA_ROUND_ALLOC(1280*720*(32/8)*SHUTTLE_FB_PAGES)
+#	define SHUTTLE_FB_HDMI_SIZE TEGRA_ROUND_ALLOC(1280*720*(16/8)*SHUTTLE_FB_PAGES)
 #endif