Observation.
In one of the Batch 4 machines I got, there is a machine with a July 28 firmware date within the Kernel Log.
Anyone noticed that? Is that an experimental firmware?
The cooling fans report constant 7000-9000 RPM range. That doesn't look normal. Recommendations?
Got my B4 S3's today. Both of them have also the July 28 firmware ("Linux version 3.10.12 (xxl@ubuntu) (gcc version 4.6.4 (OpenWrt/Linaro GCC 4.6-2013.05 r38031) ) #140 Mon Jul 21 17:27:04 CST 2014").
Both of them run with very high fan speeds, much higher than the B1 units
3780 3960
4680 10560
The B1 units, at freq=225 run 1740 1620 and 1680 1500 rpm
The Bitmain support page does not mention this firmware. Any clues why the high fan speed?
I'm now getting fan speeds of ~14000, it 'sounds' like a software bug more that a super-sonic fan.... (the fans on the new B4 units sound similar to the older B1 units with the July 21 firmware) - BITMAIN what is happening with this July 28 firmware on the Batch 4 Antminer S3s?