diff -Naur linux-2.6.8.1.orig/drivers/video/vesafb.c linux-2.6.8.1/drivers/video/vesafb.c
--- linux-2.6.8.1.orig/drivers/video/vesafb.c	2004-09-29 17:47:41.997524992 +0200
+++ linux-2.6.8.1/drivers/video/vesafb.c	2004-09-29 17:48:03.946188288 +0200
@@ -234,7 +234,7 @@
 	vesafb_fix.line_length = screen_info.lfb_linelength;
 
 	/* Allocate enough memory for double buffering */
-	vesafb_fix.smem_len = screen_info.lfb_width * screen_info.lfb_height * vesafb_defined.bits_per_pixel >> 2;
+	vesafb_fix.smem_len = 2 * screen_info.lfb_linelength * screen_info.lfb_height;
 
 	/* check that we don't remap more memory than old cards have */
 	if (vesafb_fix.smem_len > (screen_info.lfb_size * 65536))