I've added dummy 32-bit variables to dvb_frontend_swzigzag_autotune() to change the frame size. Here are the results for mythweb (can tune/cannot tune): #variables i486 i586 0 ok failure 1 failure ok 2 ok ok 3 failure failure 4 failure ok 5 ok ok 6 ok ok 7 ok ok 8 ok failure 9 failure ok 10 ok ok 11 ok failure 12 failure ok 13 ok ok 14 ok ok 15 ok ok 16 ok ok 17 ok ok 18 ok failure 19 ok failure 20 failure ok There's a pattern with some exceptions. Could be an alignment-related problem. Anyone listening? -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html