--- zzzz-none-000/linux-2.6.19.2/drivers/video/i810/i810_accel.c	2007-01-10 19:10:37.000000000 +0000
+++ davinci-8020-5505/linux-2.6.19.2/drivers/video/i810/i810_accel.c	2007-01-19 14:42:56.000000000 +0000
@@ -73,6 +73,7 @@
 		}
 	}
 	printk("ringbuffer lockup!!!\n");
+	printk("head:%u tail:%u iring.size:%u space:%u\n", head, tail, par->iring.size, space);
 	i810_report_error(mmio); 
 	par->dev_flags |= LOCKUP;
 	info->pixmap.scan_align = 1;