--- wikisrc/ports/evbarm/allwinner.mdwn	2018/02/15 11:59:22	1.80
+++ wikisrc/ports/evbarm/allwinner.mdwn	2018/02/22 13:25:11	1.81
@@ -92,3 +92,14 @@ Please refer to the [SUNXI kernel config
 - Download or build **armv7.img** from NetBSD -current
 - Write the image to disk: **dd if=armv7.img of=/dev/rld0d bs=1m conv=sync**
 - Install a board-specific U-Boot (2017.07 or later) from pkgsrc to the SD card: **dd if=/usr/pkg/share/u-boot/<boardname>/u-boot-sunxi-with-spl.bin of=/dev/rld0d bs=1k seek=8 conv=sync**
+
+# Tips and tricks
+
+## Video overscan compensation
+
+On some television models, the borders of the screen may be cut off. If your television doesn't have an option to disable overscan, you can enable overscan compensation by entering the following commands at the U-Boot prompt:
+
+    setenv video-mode sunxi:1280x720-24,overscan_x=32,overscan_y=20
+    saveenv
+    reset
+