diff --git a/[refs] b/[refs]
index 7f4a784b941f..f688ff6b2aba 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 5593eaa854d0b23c3b270933a93b9b82946df729
+refs/heads/master: 7ad37df02c529525c4ad19035359af89d2d2a5bd
diff --git a/trunk/arch/i386/boot/video.c b/trunk/arch/i386/boot/video.c
index 027a2c90300b..958130ef0042 100644
--- a/trunk/arch/i386/boot/video.c
+++ b/trunk/arch/i386/boot/video.c
@@ -195,7 +195,7 @@ static void vga_recalc_vertical(void)
 {
 	unsigned int font_size, rows;
 	u16 crtc;
-	u8 ov;
+	u8 pt, ov;
 
 	set_fs(0);
 	font_size = rdfs8(0x485); /* BIOS: font size (pixels) */
@@ -206,7 +206,12 @@ static void vga_recalc_vertical(void)
 
 	crtc = vga_crtc();
 
+	pt = in_idx(crtc, 0x11);
+	pt &= ~0x80;		/* Unlock CR0-7 */
+	out_idx(pt, crtc, 0x11);
+
 	out_idx((u8)rows, crtc, 0x12); /* Lower height register */
+
 	ov = in_idx(crtc, 0x07); /* Overflow register */
 	ov &= 0xbd;
 	ov |= (rows >> (8-1)) & 0x02;