On Tue, 17 Apr 2007 21:27:53 -0400, Jordan wrote: > and here are the isadumps: > > smart fan in bios off: > 0 1 2 3 4 5 6 7 8 9 a b c d e f > 00: 04 ff 04 7f 03 00 00 00 01 01 01 01 3c 3c 0a 0a > 10: 04 ff 00 00 00 01 01 3c 42 17 00 00 ff ff ff c4 > 20: 99 ec cd cd ff b5 c3 22 3a 12 35 da 00 96 18 9e > 30: 5b 44 34 04 60 38 b6 0f 23 51 08 87 a4 2a 05 ff > 40: 01 2e 1f fe ff ff 01 05 2d 00 00 04 58 95 00 a3 > 50: ff ff 00 ff ff ff 00 80 c1 70 ff ff 19 e5 04 05 > 60: 04 7f 40 00 01 01 3c ff 01 ff 01 ff ff ff ff ff > 70: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff > 80: 04 ff 04 7f 03 00 00 00 01 01 01 01 3c 3c 0a 0a > 90: 04 ff 00 00 00 01 01 3c 42 17 00 00 ff ff ff c6 > a0: 99 ec cd cd ff b5 c3 22 3a 12 35 da 00 96 18 9e > b0: 5b 44 34 04 60 38 b6 0f 23 51 08 87 a4 2a 05 ff > c0: 01 00 10 fe ff ff 01 05 2d 00 00 04 58 95 00 a3 > d0: ff ff 00 ff ff ff 00 80 c1 70 ff ff 19 e5 04 05 > e0: 04 7f 40 00 01 01 3c ff 01 ff 01 ff ff ff ff ff > f0: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff > > > smart fan in bios on: > 0 1 2 3 4 5 6 7 8 9 a b c d e f > 00: 04 ff 04 7f 03 00 00 00 01 01 01 01 3c 3c 0a 0a > 10: 04 ff 00 00 00 01 01 3c 42 17 00 00 ff ff ff c8 > 20: 98 ec cd cd ff b5 c3 22 38 27 34 da 00 9e 18 9e > 30: 1b 44 34 04 60 78 96 1f 23 51 08 86 a4 2a 04 ff > 40: 01 6e 1f fe ff ff 01 05 2d 00 00 04 58 95 00 a3 > 50: ff ff 00 ff ff ff 00 80 c1 70 ff ff 19 e5 04 05 > 60: 04 7f 40 00 01 01 3c ff 01 ff 01 ff ff ff ff ff > 70: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff > 80: 04 ff 04 7f 03 00 00 00 01 01 01 01 3c 3c 0a 0a > 90: 04 ff 00 00 00 01 01 3c 42 17 00 00 ff ff ff ca > a0: 98 ec cd cd ff b5 c3 22 38 28 34 da 00 9e 18 9e > b0: 1b 44 34 04 60 78 96 1f 23 51 08 86 a4 2a 04 ff > c0: 01 00 10 fe ff ff 01 05 2d 00 00 04 58 95 00 a3 > d0: ff ff 00 ff ff ff 00 80 c1 70 ff ff 19 e5 04 05 > e0: 04 7f 40 00 01 01 3c ff 01 ff 01 ff ff ff ff ff > f0: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff Comparing both outputs didn't provide much information. The only changes are in a reserved register (0x1f), monitored values (expected), limits (I guess they aren't initialized by the BIOS) and an interrupt register (probably the result of a different limit value). In particular, the fan speed control mode registers (0x04, 0x12 and 0x62) are unchanged. This seems to confirm that the fan speed control is done by a different device. -- Jean Delvare
