So I have tested the 3 builds below, and out of the three, chop10 seems the most promising. I stop testing usually as soon as a zombie appears, since I can run version 3.3.1 for days on end without problems.
cgminer-cwa8
One AMU LED came on after 30 seconds into the test. It stayed on for about 2-3 seconds then went off again. I don't know the AMU number, but no messages appeared on screen and it seems to have recovered OK. No zombie. However, the first zombie appeared after 3 minutes (AMU33), followed by loads of LIBUSB_ERROR_TIMEOUTs from AMU0. Curious as to why AMU0 should be the one to give continuous timeouts when it seems to be working OK?
cgminer-chop8
A zombie (AMU24) appeared after 11 minutes, followed by an error timeout from AMU23 then loads of repeated timeouts from AMU0.
cgminer-chop10
First zombie after an hour and 10 minutes:
AMU 13: | ZOMBIE/332.2Mh/s | A:330 R:0 HW:10 WU: 4.4/m
Followed by continuous timeouts from AMU 0.
Instead of stopping the test, I unplugged the zombie AMU (AMU13?) and observed that timeouts from AMU 0 stopped, then I replugged (AMU13?) in at 11:33 and it started working as AMU34. Returning later, there were 2 zombies reported, but one of those was in the same position as AMU34 - which was AMU13 - and no mention of AMU34 in the table. Is this to be expected, or something strange? Full info in logfile.
Logfiles here (without --debug) if required:
https://dl.dropboxusercontent.com/u/44240170/logfile-cwa8.txt https://dl.dropboxusercontent.com/u/44240170/logfile-chop8.txt https://dl.dropboxusercontent.com/u/44240170/logfile-chop10.txtAh, now I see we have another candidate! On to try cgminer-pps32 next...